3a4687d782
git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@24480 e7fa87d3-cd2b-0410-9028-fcbf551c1848
3893 lines
157 KiB
C++
3893 lines
157 KiB
C++
//
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//Copyright (C) 2002-2005 3Dlabs Inc. Ltd.
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//Copyright (C) 2012-2013 LunarG, Inc.
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//
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//All rights reserved.
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//
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//Redistribution and use in source and binary forms, with or without
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//modification, are permitted provided that the following conditions
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//are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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//
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// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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//POSSIBILITY OF SUCH DAMAGE.
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//
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#include "ParseHelper.h"
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#include "Scan.h"
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#include "osinclude.h"
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#include <stdarg.h>
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#include <algorithm>
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#include "preprocessor/PpContext.h"
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extern int yyparse(void*);
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namespace glslang {
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TParseContext::TParseContext(TSymbolTable& symt, TIntermediate& interm, bool pb, int v, EProfile p, EShLanguage L, TInfoSink& is,
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bool fc, EShMessages m) :
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intermediate(interm), symbolTable(symt), infoSink(is), language(L),
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version(v), profile(p), forwardCompatible(fc), messages(m),
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contextPragma(true, false), loopNestingLevel(0), controlFlowNestingLevel(0), structNestingLevel(0),
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tokensBeforeEOF(false), limits(resources.limits), currentScanner(0),
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numErrors(0), parsingBuiltins(pb), afterEOF(false),
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anyIndexLimits(false)
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{
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// ensure we always have a linkage node, even if empty, to simplify tree topology algorithms
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linkage = new TIntermAggregate;
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// set all precision defaults to EpqNone, which is correct for all desktop types
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// and for ES types that don't have defaults (thus getting an error on use)
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for (int type = 0; type < EbtNumTypes; ++type)
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defaultPrecision[type] = EpqNone;
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for (int type = 0; type < maxSamplerIndex; ++type)
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defaultSamplerPrecision[type] = EpqNone;
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// replace with real defaults for those that have them
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if (profile == EEsProfile) {
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TSampler sampler;
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sampler.set(EbtFloat, Esd2D);
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defaultSamplerPrecision[computeSamplerTypeIndex(sampler)] = EpqLow;
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sampler.set(EbtFloat, EsdCube);
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defaultSamplerPrecision[computeSamplerTypeIndex(sampler)] = EpqLow;
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sampler.set(EbtFloat, Esd2D);
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sampler.external = true;
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defaultSamplerPrecision[computeSamplerTypeIndex(sampler)] = EpqLow;
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switch (language) {
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case EShLangFragment:
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defaultPrecision[EbtInt] = EpqMedium;
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defaultPrecision[EbtUint] = EpqMedium;
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defaultPrecision[EbtSampler] = EpqLow;
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break;
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default:
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defaultPrecision[EbtInt] = EpqHigh;
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defaultPrecision[EbtUint] = EpqHigh;
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defaultPrecision[EbtFloat] = EpqHigh;
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defaultPrecision[EbtSampler] = EpqLow;
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break;
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}
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}
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globalUniformDefaults.clear();
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globalUniformDefaults.layoutMatrix = ElmColumnMajor;
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globalUniformDefaults.layoutPacking = ElpShared;
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globalBufferDefaults.clear();
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globalBufferDefaults.layoutMatrix = ElmColumnMajor;
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globalBufferDefaults.layoutPacking = ElpShared;
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globalInputDefaults.clear();
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globalOutputDefaults.clear();
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if (language == EShLangGeometry)
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globalOutputDefaults.layoutStream = 0;
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}
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void TParseContext::setLimits(const TBuiltInResource& r)
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{
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resources = r;
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anyIndexLimits = ! limits.generalAttributeMatrixVectorIndexing ||
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! limits.generalConstantMatrixVectorIndexing ||
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! limits.generalSamplerIndexing ||
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! limits.generalUniformIndexing ||
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! limits.generalVariableIndexing ||
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! limits.generalVaryingIndexing;
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}
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//
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// Parse an array of strings using yyparse, going through the
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// preprocessor to tokenize the shader strings, then through
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// the GLSL scanner.
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//
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// Returns true for successful acceptance of the shader, false if any errors.
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//
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bool TParseContext::parseShaderStrings(TPpContext& ppContext, TInputScanner& input, bool versionWillBeError)
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{
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currentScanner = &input;
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ppContext.setInput(input, versionWillBeError);
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yyparse((void*)this);
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finalErrorCheck();
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return numErrors == 0;
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}
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// This is called from bison when it has a parse (syntax) error
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void TParseContext::parserError(const char *s)
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{
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if (afterEOF) {
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if (tokensBeforeEOF == 1)
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error(getCurrentLoc(), "", "pre-mature EOF", s, "");
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} else
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error(getCurrentLoc(), "", "", s, "");
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}
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void TParseContext::handlePragma(TSourceLoc loc, const TVector<TString>& tokens)
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{
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if (tokens.size() == 0)
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return;
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if (tokens[0].compare("optimize") == 0) {
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if (tokens.size() != 4) {
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error(loc, "optimize pragma syntax is incorrect", "#pragma", "");
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return;
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}
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if (tokens[1].compare("(") != 0) {
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error(loc, "\"(\" expected after 'optimize' keyword", "#pragma", "");
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return;
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}
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if (tokens[2].compare("on") == 0)
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contextPragma.optimize = true;
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else if (tokens[2].compare("off") == 0)
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contextPragma.optimize = false;
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else {
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error(loc, "\"on\" or \"off\" expected after '(' for 'optimize' pragma", "#pragma", "");
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return;
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}
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if (tokens[3].compare(")") != 0) {
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error(loc, "\")\" expected to end 'optimize' pragma", "#pragma", "");
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return;
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}
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} else if (tokens[0].compare("debug") == 0) {
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if (tokens.size() != 4) {
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error(loc, "debug pragma syntax is incorrect", "#pragma", "");
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return;
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}
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if (tokens[1].compare("(") != 0) {
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error(loc, "\"(\" expected after 'debug' keyword", "#pragma", "");
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return;
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}
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if (tokens[2].compare("on") == 0)
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contextPragma.debug = true;
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else if (tokens[2].compare("off") == 0)
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contextPragma.debug = false;
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else {
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error(loc, "\"on\" or \"off\" expected after '(' for 'debug' pragma", "#pragma", "");
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return;
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}
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if (tokens[3].compare(")") != 0) {
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error(loc, "\")\" expected to end 'debug' pragma", "#pragma", "");
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return;
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}
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}
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}
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///////////////////////////////////////////////////////////////////////
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//
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// Sub- vector and matrix fields
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//
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////////////////////////////////////////////////////////////////////////
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//
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// Look at a '.' field selector string and change it into offsets
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// for a vector or scalar
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//
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// Returns true if there is no error.
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//
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bool TParseContext::parseVectorFields(TSourceLoc loc, const TString& compString, int vecSize, TVectorFields& fields)
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{
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fields.num = (int) compString.size();
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if (fields.num > 4) {
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error(loc, "illegal vector field selection", compString.c_str(), "");
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return false;
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}
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enum {
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exyzw,
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ergba,
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estpq,
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} fieldSet[4];
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for (int i = 0; i < fields.num; ++i) {
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switch (compString[i]) {
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case 'x':
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fields.offsets[i] = 0;
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fieldSet[i] = exyzw;
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break;
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case 'r':
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fields.offsets[i] = 0;
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fieldSet[i] = ergba;
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break;
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case 's':
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fields.offsets[i] = 0;
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fieldSet[i] = estpq;
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break;
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case 'y':
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fields.offsets[i] = 1;
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fieldSet[i] = exyzw;
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break;
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case 'g':
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fields.offsets[i] = 1;
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fieldSet[i] = ergba;
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break;
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case 't':
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fields.offsets[i] = 1;
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fieldSet[i] = estpq;
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break;
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case 'z':
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fields.offsets[i] = 2;
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fieldSet[i] = exyzw;
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break;
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case 'b':
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fields.offsets[i] = 2;
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fieldSet[i] = ergba;
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break;
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case 'p':
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fields.offsets[i] = 2;
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fieldSet[i] = estpq;
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break;
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case 'w':
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fields.offsets[i] = 3;
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fieldSet[i] = exyzw;
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break;
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case 'a':
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fields.offsets[i] = 3;
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fieldSet[i] = ergba;
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break;
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case 'q':
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fields.offsets[i] = 3;
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fieldSet[i] = estpq;
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break;
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default:
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error(loc, "illegal vector field selection", compString.c_str(), "");
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return false;
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}
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}
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for (int i = 0; i < fields.num; ++i) {
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if (fields.offsets[i] >= vecSize) {
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error(loc, "vector field selection out of range", compString.c_str(), "");
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return false;
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}
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if (i > 0) {
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if (fieldSet[i] != fieldSet[i-1]) {
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error(loc, "illegal - vector component fields not from the same set", compString.c_str(), "");
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return false;
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}
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}
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}
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return true;
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}
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///////////////////////////////////////////////////////////////////////
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//
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// Errors
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//
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////////////////////////////////////////////////////////////////////////
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//
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// Used to output syntax, parsing, and semantic errors.
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//
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void C_DECL TParseContext::error(TSourceLoc loc, const char *szReason, const char *szToken,
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const char *szExtraInfoFormat, ...)
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{
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const int maxSize = GlslangMaxTokenLength + 200;
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char szExtraInfo[maxSize];
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va_list marker;
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va_start(marker, szExtraInfoFormat);
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safe_vsprintf(szExtraInfo, maxSize, szExtraInfoFormat, marker);
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infoSink.info.prefix(EPrefixError);
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infoSink.info.location(loc);
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infoSink.info << "'" << szToken << "' : " << szReason << " " << szExtraInfo << "\n";
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va_end(marker);
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++numErrors;
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}
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void C_DECL TParseContext::warn(TSourceLoc loc, const char *szReason, const char *szToken,
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const char *szExtraInfoFormat, ...)
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{
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if (messages & EShMsgSuppressWarnings)
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return;
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const int maxSize = GlslangMaxTokenLength + 200;
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char szExtraInfo[maxSize];
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va_list marker;
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va_start(marker, szExtraInfoFormat);
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safe_vsprintf(szExtraInfo, maxSize, szExtraInfoFormat, marker);
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infoSink.info.prefix(EPrefixWarning);
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infoSink.info.location(loc);
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infoSink.info << "'" << szToken << "' : " << szReason << " " << szExtraInfo << "\n";
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va_end(marker);
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}
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//
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// Handle seeing a variable identifier in the grammar.
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//
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TIntermTyped* TParseContext::handleVariable(TSourceLoc loc, TSymbol* symbol, TString* string)
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{
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TIntermTyped* node = 0;
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bool noteAccess = false;
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// Error check for function requiring specific extensions present.
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if (symbol && symbol->getNumExtensions())
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requireExtensions(loc, symbol->getNumExtensions(), symbol->getExtensions(), symbol->getName().c_str());
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const TAnonMember* anon = symbol ? symbol->getAsAnonMember() : 0;
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if (anon) {
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// it was a member of an anonymous container, have to insert its dereference
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const TVariable* variable = anon->getAnonContainer().getAsVariable();
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TIntermTyped* container = intermediate.addSymbol(variable->getUniqueId(), variable->getName(), variable->getType(), loc);
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TConstUnionArray unionArray(1);
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unionArray[0].setUConst(anon->getMemberNumber());
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TIntermTyped* constNode = intermediate.addConstantUnion(unionArray, TType(EbtUint, EvqConst), loc);
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node = intermediate.addIndex(EOpIndexDirectStruct, container, constNode, loc);
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node->setType(*(*variable->getType().getStruct())[anon->getMemberNumber()].type);
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if (node->getBasicType() == EbtVoid)
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error(loc, "member of nameless block was not redeclared", string->c_str(), "");
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if (variable->getType().getQualifier().isIo())
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noteAccess = true;
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// TODO: does this create any accidental type sharing with the built-in level?
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} else {
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// The symbol table search was done in the lexical phase, but
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// if this is a new symbol, it wouldn't have found it.
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TVariable* variable = symbol ? symbol->getAsVariable() : 0;
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if (symbol && ! variable)
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error(loc, "variable name expected", string->c_str(), "");
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if (! variable)
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variable = new TVariable(string, TType(EbtVoid));
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if (variable->getType().getQualifier().storage == EvqConst)
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node = intermediate.addConstantUnion(variable->getConstArray(), variable->getType(), loc);
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else {
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TType* type;
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if (variable->isReadOnly()) {
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type = new TType;
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// break type sharing with built-ins; only costs if there are arrays or structures
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type->deepCopy(variable->getType());
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} else
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type = &variable->getWritableType();
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node = intermediate.addSymbol(variable->getUniqueId(), variable->getName(), *type, loc);
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if (type->getQualifier().isIo())
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noteAccess = true;
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}
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}
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if (noteAccess)
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intermediate.addIoAccessed(*string);
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return node;
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}
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|
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//
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// Handle seeing a base[index] dereference in the grammar.
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//
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TIntermTyped* TParseContext::handleBracketDereference(TSourceLoc loc, TIntermTyped* base, TIntermTyped* index)
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{
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TIntermTyped* result = 0;
|
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|
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int indexValue = 0;
|
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if (index->getQualifier().storage == EvqConst) {
|
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indexValue = index->getAsConstantUnion()->getConstArray()[0].getIConst();
|
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checkIndex(loc, base->getType(), indexValue);
|
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}
|
||
|
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variableCheck(base);
|
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if (! base->isArray() && ! base->isMatrix() && ! base->isVector()) {
|
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if (base->getAsSymbolNode())
|
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error(loc, " left of '[' is not of type array, matrix, or vector ", base->getAsSymbolNode()->getName().c_str(), "");
|
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else
|
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error(loc, " left of '[' is not of type array, matrix, or vector ", "expression", "");
|
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} else if (base->getType().getQualifier().storage == EvqConst && index->getQualifier().storage == EvqConst)
|
||
return intermediate.foldDereference(base, indexValue, loc);
|
||
else {
|
||
// at least one of base and index is variable...
|
||
if (index->getQualifier().storage == EvqConst) {
|
||
if (base->isArray() && base->getType().getArraySize() == 0)
|
||
updateMaxArraySize(loc, base, indexValue);
|
||
result = intermediate.addIndex(EOpIndexDirect, base, index, loc);
|
||
} else {
|
||
if (base->isArray() && base->getType().getArraySize() == 0)
|
||
error(loc, "", "[", "array must be redeclared with a size before being indexed with a variable");
|
||
if (base->getBasicType() == EbtBlock)
|
||
requireProfile(base->getLoc(), ~EEsProfile, "variable indexing block array");
|
||
else if (language == EShLangFragment && base->getQualifier().isPipeOutput())
|
||
requireProfile(base->getLoc(), ~EEsProfile, "variable indexing fragment shader ouput array");
|
||
else if (base->getBasicType() == EbtSampler && version >= 130) {
|
||
const char* explanation = "variable indexing sampler array";
|
||
requireProfile(base->getLoc(), ECoreProfile | ECompatibilityProfile, explanation);
|
||
profileRequires(base->getLoc(), ECoreProfile | ECompatibilityProfile, 400, 0, explanation);
|
||
}
|
||
|
||
result = intermediate.addIndex(EOpIndexIndirect, base, index, loc);
|
||
}
|
||
}
|
||
|
||
if (result == 0) {
|
||
// Insert dummy error-recovery result
|
||
TConstUnionArray unionArray(1);
|
||
unionArray[0].setDConst(0.0);
|
||
result = intermediate.addConstantUnion(unionArray, TType(EbtFloat, EvqConst), loc);
|
||
} else {
|
||
// Insert valid dereferenced result
|
||
TType newType(base->getType(), 0); // dereferenced type
|
||
if (base->getType().getQualifier().storage == EvqConst && index->getQualifier().storage == EvqConst)
|
||
newType.getQualifier().storage = EvqConst;
|
||
else
|
||
newType.getQualifier().storage = EvqTemporary;
|
||
result->setType(newType);
|
||
|
||
if (anyIndexLimits)
|
||
handleIndexLimits(loc, base, index);
|
||
|
||
if (language == EShLangGeometry && base->isArray())
|
||
handleInputArrayAccess(loc, base);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
void TParseContext::checkIndex(TSourceLoc loc, const TType& type, int& index)
|
||
{
|
||
if (index < 0) {
|
||
error(loc, "", "[", "index out of range '%d'", index);
|
||
index = 0;
|
||
} else if (type.isArray()) {
|
||
if (type.getArraySize() != 0 && index >= type.getArraySize()) {
|
||
error(loc, "", "[", "array index out of range '%d'", index);
|
||
index = type.getArraySize() - 1;
|
||
}
|
||
} else if (type.isVector()) {
|
||
if (index >= type.getVectorSize()) {
|
||
error(loc, "", "[", "vector index out of range '%d'", index);
|
||
index = type.getVectorSize() - 1;
|
||
}
|
||
} else if (type.isMatrix()) {
|
||
if (index >= type.getMatrixCols()) {
|
||
error(loc, "", "[", "matrix index out of range '%d'", index);
|
||
index = type.getMatrixCols() - 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
// for ES 2.0 (version 100) limitations for almost all index operations except vertex-shader uniforms
|
||
void TParseContext::handleIndexLimits(TSourceLoc loc, TIntermTyped* base, TIntermTyped* index)
|
||
{
|
||
if ((! limits.generalSamplerIndexing && base->getBasicType() == EbtSampler) ||
|
||
(! limits.generalUniformIndexing && base->getQualifier().isUniform() && language != EShLangVertex) ||
|
||
(! limits.generalAttributeMatrixVectorIndexing && base->getQualifier().isPipeInput() && language == EShLangVertex && (base->getType().isMatrix() || base->getType().isVector())) ||
|
||
(! limits.generalConstantMatrixVectorIndexing && base->getAsConstantUnion()) ||
|
||
(! limits.generalVariableIndexing && ! base->getType().getQualifier().isUniform() &&
|
||
! base->getType().getQualifier().isPipeInput() &&
|
||
! base->getType().getQualifier().isPipeOutput() &&
|
||
base->getType().getQualifier().storage != EvqConst) ||
|
||
(! limits.generalVaryingIndexing && (base->getType().getQualifier().isPipeInput() ||
|
||
base->getType().getQualifier().isPipeOutput()))) {
|
||
// it's too early to know what the inductive variables are, save it for post processing
|
||
needsIndexLimitationChecking.push_back(index);
|
||
}
|
||
}
|
||
|
||
// Handle a dereference of a geometry shader input arrays.
|
||
// See inputArrayNodeResizeList comment in ParseHelper.h.
|
||
//
|
||
void TParseContext::handleInputArrayAccess(TSourceLoc loc, TIntermTyped* base)
|
||
{
|
||
if (base->getType().getQualifier().storage == EvqVaryingIn) {
|
||
TIntermSymbol* symbol = base->getAsSymbolNode();
|
||
assert(symbol);
|
||
inputArrayNodeResizeList.push_back(symbol);
|
||
if (symbol && builtInName(symbol->getName())) {
|
||
// make sure we have a user-modifiable copy of this built-in input array
|
||
TSymbol* input = symbolTable.find(symbol->getName());
|
||
if (input->isReadOnly()) {
|
||
input = symbolTable.copyUp(input);
|
||
inputArraySymbolResizeList.push_back(input);
|
||
|
||
// Save it in the AST for linker use.
|
||
intermediate.addSymbolLinkageNode(linkage, *input);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// If there has been an input primitive declaration, make sure all input array types
|
||
// match it in size. Types come either from nodes in the AST or symbols in the
|
||
// symbol table.
|
||
//
|
||
// Types without an array size will be given one.
|
||
// Types already having a size that is wrong will get an error.
|
||
//
|
||
void TParseContext::checkInputArrayConsistency(TSourceLoc loc, bool tailOnly)
|
||
{
|
||
TLayoutGeometry primitive = intermediate.getInputPrimitive();
|
||
if (primitive == ElgNone)
|
||
return;
|
||
|
||
if (tailOnly) {
|
||
checkInputArrayConsistency(loc, primitive, inputArraySymbolResizeList.back()->getWritableType(), inputArraySymbolResizeList.back()->getName());
|
||
return;
|
||
}
|
||
|
||
for (size_t i = 0; i < inputArrayNodeResizeList.size(); ++i)
|
||
checkInputArrayConsistency(loc, primitive, inputArrayNodeResizeList[i]->getWritableType(), inputArrayNodeResizeList[i]->getName());
|
||
|
||
for (size_t i = 0; i < inputArraySymbolResizeList.size(); ++i)
|
||
checkInputArrayConsistency(loc, primitive, inputArraySymbolResizeList[i]->getWritableType(), inputArraySymbolResizeList[i]->getName());
|
||
}
|
||
|
||
void TParseContext::checkInputArrayConsistency(TSourceLoc loc, TLayoutGeometry primitive, TType& type, const TString& name)
|
||
{
|
||
int requiredSize = TQualifier::mapGeometryToSize(primitive);
|
||
|
||
if (type.getArraySize() == 0)
|
||
type.changeArraySize(requiredSize);
|
||
else if (type.getArraySize() != requiredSize)
|
||
error(loc, "inconsistent input primitive for array size", TQualifier::getGeometryString(primitive), name.c_str());
|
||
}
|
||
|
||
//
|
||
// Handle seeing a base.field dereference in the grammar.
|
||
//
|
||
TIntermTyped* TParseContext::handleDotDereference(TSourceLoc loc, TIntermTyped* base, TString& field)
|
||
{
|
||
TIntermTyped* result = base;
|
||
|
||
variableCheck(base);
|
||
if (base->isArray()) {
|
||
//
|
||
// It can only be a method (e.g., length), which can't be resolved until
|
||
// we later see the function calling syntax. Save away the name for now.
|
||
//
|
||
|
||
if (field == "length") {
|
||
profileRequires(loc, ENoProfile, 120, GL_3DL_array_objects, ".length");
|
||
profileRequires(loc, EEsProfile, 300, 0, ".length");
|
||
result = intermediate.addMethod(base, TType(EbtInt), &field, loc);
|
||
} else
|
||
error(loc, "only the length method is supported for array", field.c_str(), "");
|
||
} else if (base->isVector() || base->isScalar()) {
|
||
if (base->isScalar()) {
|
||
const char* dotFeature = "scalar swizzle";
|
||
requireProfile(loc, ECoreProfile | ECompatibilityProfile, dotFeature);
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 420, GL_ARB_shading_language_420pack, dotFeature);
|
||
}
|
||
|
||
TVectorFields fields;
|
||
if (! parseVectorFields(loc, field, base->getVectorSize(), fields)) {
|
||
fields.num = 1;
|
||
fields.offsets[0] = 0;
|
||
}
|
||
|
||
if (base->isScalar()) {
|
||
if (fields.num == 1)
|
||
return result;
|
||
else {
|
||
TType type(base->getBasicType(), EvqTemporary, fields.num);
|
||
return addConstructor(loc, base, type, mapTypeToConstructorOp(type));
|
||
}
|
||
}
|
||
|
||
if (base->getType().getQualifier().storage == EvqConst)
|
||
result = intermediate.foldSwizzle(base, fields, loc);
|
||
else {
|
||
if (fields.num == 1) {
|
||
TConstUnionArray unionArray(1);
|
||
unionArray[0].setIConst(fields.offsets[0]);
|
||
TIntermTyped* index = intermediate.addConstantUnion(unionArray, TType(EbtInt, EvqConst), loc);
|
||
result = intermediate.addIndex(EOpIndexDirect, base, index, loc);
|
||
result->setType(TType(base->getBasicType(), EvqTemporary, base->getType().getQualifier().precision));
|
||
} else {
|
||
TString vectorString = field;
|
||
TIntermTyped* index = intermediate.addSwizzle(fields, loc);
|
||
result = intermediate.addIndex(EOpVectorSwizzle, base, index, loc);
|
||
result->setType(TType(base->getBasicType(), EvqTemporary, base->getType().getQualifier().precision, (int) vectorString.size()));
|
||
}
|
||
}
|
||
} else if (base->isMatrix())
|
||
error(loc, "field selection not allowed on matrix", ".", "");
|
||
else if (base->getBasicType() == EbtStruct || base->getBasicType() == EbtBlock) {
|
||
TTypeList* fields = base->getType().getStruct();
|
||
bool fieldFound = false;
|
||
unsigned int member;
|
||
for (member = 0; member < fields->size(); ++member) {
|
||
if ((*fields)[member].type->getFieldName() == field) {
|
||
fieldFound = true;
|
||
break;
|
||
}
|
||
}
|
||
if (fieldFound) {
|
||
if (base->getType().getQualifier().storage == EvqConst)
|
||
result = intermediate.foldDereference(base, member, loc);
|
||
else {
|
||
TConstUnionArray unionArray(1);
|
||
unionArray[0].setIConst(member);
|
||
TIntermTyped* index = intermediate.addConstantUnion(unionArray, TType(EbtInt, EvqConst), loc);
|
||
result = intermediate.addIndex(EOpIndexDirectStruct, base, index, loc);
|
||
result->setType(*(*fields)[member].type);
|
||
}
|
||
} else
|
||
error(loc, " no such field in structure", field.c_str(), "");
|
||
} else
|
||
error(loc, " dot operator does not operater on this type:", field.c_str(), base->getType().getCompleteString().c_str());
|
||
|
||
return result;
|
||
}
|
||
|
||
//
|
||
// Handle seeing a function declarator in the grammar. This is the precursor
|
||
// to recognizing a function prototype or function definition.
|
||
//
|
||
TFunction* TParseContext::handleFunctionDeclarator(TSourceLoc loc, TFunction& function, bool prototype)
|
||
{
|
||
// ES can't declare prototypes inside functions
|
||
if (! symbolTable.atGlobalLevel())
|
||
requireProfile(loc, ~EEsProfile, "local function declaration");
|
||
|
||
//
|
||
// Multiple declarations of the same function name are allowed.
|
||
//
|
||
// If this is a definition, the definition production code will check for redefinitions
|
||
// (we don't know at this point if it's a definition or not).
|
||
//
|
||
// Redeclarations (full signature match) are allowed. But, return types and parameter qualifiers must also match.
|
||
// - except ES 100, which only allows a single prototype
|
||
//
|
||
// ES 100 does not allow redefining, but does allow overloading of built-in functions.
|
||
// ES 300 does not allow redefining or overloading of built-in functions.
|
||
//
|
||
bool builtIn;
|
||
TSymbol* symbol = symbolTable.find(function.getMangledName(), &builtIn);
|
||
if (symbol && symbol->getAsFunction() && builtIn)
|
||
requireProfile(loc, ~EEsProfile, "redefinition of built-in function");
|
||
const TFunction* prevDec = symbol ? symbol->getAsFunction() : 0;
|
||
if (prevDec) {
|
||
if (prevDec->isPrototyped() && prototype)
|
||
profileRequires(loc, EEsProfile, 300, 0, "multiple prototypes for same function");
|
||
if (prevDec->getType() != function.getType())
|
||
error(loc, "overloaded functions must have the same return type", function.getType().getBasicTypeString().c_str(), "");
|
||
for (int i = 0; i < prevDec->getParamCount(); ++i) {
|
||
if ((*prevDec)[i].type->getQualifier().storage != function[i].type->getQualifier().storage)
|
||
error(loc, "overloaded functions must have the same parameter storage qualifiers for argument", function[i].type->getStorageQualifierString(), "%d", i+1);
|
||
|
||
if ((*prevDec)[i].type->getQualifier().precision != function[i].type->getQualifier().precision)
|
||
error(loc, "overloaded functions must have the same parameter precision qualifiers for argument", function[i].type->getPrecisionQualifierString(), "%d", i+1);
|
||
}
|
||
}
|
||
|
||
arrayObjectCheck(loc, function.getType(), "array in function return type");
|
||
|
||
if (prototype) {
|
||
// All built-in functions are defined, even though they don't have a body.
|
||
// Count their prototype as a definition instead.
|
||
if (symbolTable.atBuiltInLevel())
|
||
function.setDefined();
|
||
else {
|
||
if (prevDec && ! builtIn)
|
||
symbol->getAsFunction()->setPrototyped(); // need a writable one, but like having prevDec as a const
|
||
function.setPrototyped();
|
||
}
|
||
}
|
||
|
||
// This insert won't actually insert it if it's a duplicate signature, but it will still check for
|
||
// other forms of name collisions.
|
||
if (! symbolTable.insert(function))
|
||
error(loc, "function name is redeclaration of existing name", function.getName().c_str(), "");
|
||
|
||
//
|
||
// If this is a redeclaration, it could also be a definition,
|
||
// in which case, we need to use the parameter names from this one, and not the one that's
|
||
// being redeclared. So, pass back this declaration, not the one in the symbol table.
|
||
//
|
||
return &function;
|
||
}
|
||
|
||
//
|
||
// Handle seeing the function prototype in front of a function definition in the grammar.
|
||
// The body is handled after this function returns.
|
||
//
|
||
TIntermAggregate* TParseContext::handleFunctionDefinition(TSourceLoc loc, TFunction& function)
|
||
{
|
||
currentCaller = function.getMangledName();
|
||
TSymbol* symbol = symbolTable.find(function.getMangledName());
|
||
TFunction* prevDec = symbol ? symbol->getAsFunction() : 0;
|
||
|
||
if (! prevDec)
|
||
error(loc, "can't find function", function.getName().c_str(), "");
|
||
// Note: 'prevDec' could be 'function' if this is the first time we've seen function
|
||
// as it would have just been put in the symbol table. Otherwise, we're looking up
|
||
// an earlier occurance.
|
||
|
||
if (prevDec && prevDec->isDefined()) {
|
||
// Then this function already has a body.
|
||
error(loc, "function already has a body", function.getName().c_str(), "");
|
||
}
|
||
if (prevDec && ! prevDec->isDefined()) {
|
||
prevDec->setDefined();
|
||
|
||
// Remember the return type for later checking for RETURN statements.
|
||
currentFunctionType = &(prevDec->getType());
|
||
} else
|
||
currentFunctionType = new TType(EbtVoid);
|
||
functionReturnsValue = false;
|
||
|
||
//
|
||
// Raise error message if main function takes any parameters or returns anything other than void
|
||
//
|
||
if (function.getName() == "main") {
|
||
if (function.getParamCount() > 0)
|
||
error(loc, "function cannot take any parameter(s)", function.getName().c_str(), "");
|
||
if (function.getType().getBasicType() != EbtVoid)
|
||
error(loc, "", function.getType().getBasicTypeString().c_str(), "main function cannot return a value");
|
||
intermediate.addMainCount();
|
||
}
|
||
|
||
//
|
||
// New symbol table scope for body of function plus its arguments
|
||
//
|
||
symbolTable.push();
|
||
|
||
//
|
||
// Insert parameters into the symbol table.
|
||
// If the parameter has no name, it's not an error, just don't insert it
|
||
// (could be used for unused args).
|
||
//
|
||
// Also, accumulate the list of parameters into the HIL, so lower level code
|
||
// knows where to find parameters.
|
||
//
|
||
TIntermAggregate* paramNodes = new TIntermAggregate;
|
||
for (int i = 0; i < function.getParamCount(); i++) {
|
||
TParameter& param = function[i];
|
||
if (param.name != 0) {
|
||
TVariable *variable = new TVariable(param.name, *param.type);
|
||
|
||
// Insert the parameters with name in the symbol table.
|
||
if (! symbolTable.insert(*variable))
|
||
error(loc, "redefinition", variable->getName().c_str(), "");
|
||
else {
|
||
// Transfer ownership of name pointer to symbol table.
|
||
param.name = 0;
|
||
|
||
// Add the parameter to the HIL
|
||
paramNodes = intermediate.growAggregate(paramNodes,
|
||
intermediate.addSymbol(variable->getUniqueId(),
|
||
variable->getName(),
|
||
variable->getType(), loc),
|
||
loc);
|
||
}
|
||
} else
|
||
paramNodes = intermediate.growAggregate(paramNodes, intermediate.addSymbol(0, "", *param.type, loc), loc);
|
||
}
|
||
intermediate.setAggregateOperator(paramNodes, EOpParameters, TType(EbtVoid), loc);
|
||
loopNestingLevel = 0;
|
||
controlFlowNestingLevel = 0;
|
||
|
||
return paramNodes;
|
||
}
|
||
|
||
//
|
||
// Handle seeing function call syntax in the grammar, which could be any of
|
||
// - .length() method
|
||
// - constructor
|
||
// - a call to a built-in function mapped to an operator
|
||
// - a call to a built-in function that will remain a function call (e.g., texturing)
|
||
// - user function
|
||
// - subroutine call (not implemented yet)
|
||
//
|
||
TIntermTyped* TParseContext::handleFunctionCall(TSourceLoc loc, TFunction* fnCall, TIntermNode* intermNode, TIntermAggregate* intermAggregate)
|
||
{
|
||
TIntermTyped* result = 0;
|
||
|
||
TOperator op = fnCall->getBuiltInOp();
|
||
if (op == EOpArrayLength) {
|
||
if (fnCall->getParamCount() > 0)
|
||
error(loc, "method does not accept any arguments", fnCall->getName().c_str(), "");
|
||
int length;
|
||
if (intermNode->getAsTyped() == 0 || ! intermNode->getAsTyped()->getType().isArray() || intermNode->getAsTyped()->getType().getArraySize() == 0) {
|
||
error(loc, "", fnCall->getName().c_str(), "array must be declared with a size before using this method");
|
||
length = 1;
|
||
} else
|
||
length = intermNode->getAsTyped()->getType().getArraySize();
|
||
|
||
TConstUnionArray unionArray(1);
|
||
unionArray[0].setIConst(length);
|
||
result = intermediate.addConstantUnion(unionArray, TType(EbtInt, EvqConst), loc);
|
||
} else if (op != EOpNull) {
|
||
//
|
||
// Then this should be a constructor.
|
||
// Don't go through the symbol table for constructors.
|
||
// Their parameters will be verified algorithmically.
|
||
//
|
||
TType type(EbtVoid); // use this to get the type back
|
||
if (! constructorError(loc, intermNode, *fnCall, op, type)) {
|
||
//
|
||
// It's a constructor, of type 'type'.
|
||
//
|
||
result = addConstructor(loc, intermNode, type, op);
|
||
if (result == 0)
|
||
error(loc, "cannot construct with these arguments", type.getCompleteString().c_str(), "");
|
||
}
|
||
} else {
|
||
//
|
||
// Find it in the symbol table.
|
||
//
|
||
const TFunction* fnCandidate;
|
||
bool builtIn;
|
||
fnCandidate = findFunction(loc, *fnCall, builtIn);
|
||
if (fnCandidate) {
|
||
// Error check for function requiring specific extensions present.
|
||
if (builtIn && fnCandidate->getNumExtensions())
|
||
requireExtensions(loc, fnCandidate->getNumExtensions(), fnCandidate->getExtensions(), fnCandidate->getName().c_str());
|
||
|
||
//
|
||
// A declared function. But, it might still map to a built-in
|
||
// operation.
|
||
//
|
||
op = fnCandidate->getBuiltInOp();
|
||
if (builtIn && op != EOpNull) {
|
||
// A function call mapped to a built-in operation.
|
||
result = intermediate.addBuiltInFunctionCall(loc, op, fnCandidate->getParamCount() == 1, intermNode, fnCandidate->getType());
|
||
if (result == 0) {
|
||
error(intermNode->getLoc(), " wrong operand type", "Internal Error",
|
||
"built in unary operator function. Type: %s",
|
||
static_cast<TIntermTyped*>(intermNode)->getCompleteString().c_str());
|
||
}
|
||
} else {
|
||
// This is a function call not mapped to built-in operation
|
||
result = intermediate.setAggregateOperator(intermAggregate, EOpFunctionCall, fnCandidate->getType(), loc);
|
||
result->getAsAggregate()->setName(fnCandidate->getMangledName());
|
||
|
||
// this is how we know whether the given function is a built-in function or a user-defined function
|
||
// if builtIn == false, it's a userDefined -> could be an overloaded built-in function also
|
||
// if builtIn == true, it's definitely a built-in function with EOpNull
|
||
if (! builtIn) {
|
||
result->getAsAggregate()->setUserDefined();
|
||
intermediate.addToCallGraph(infoSink, currentCaller, fnCandidate->getMangledName());
|
||
}
|
||
|
||
// Make sure storage qualifications work for these arguments.
|
||
TStorageQualifier qual;
|
||
TQualifierList& qualifierList = result->getAsAggregate()->getQualifierList();
|
||
for (int i = 0; i < fnCandidate->getParamCount(); ++i) {
|
||
qual = (*fnCandidate)[i].type->getQualifier().storage;
|
||
if (qual == EvqOut || qual == EvqInOut) {
|
||
if (lValueErrorCheck(result->getLoc(), "assign", result->getAsAggregate()->getSequence()[i]->getAsTyped()))
|
||
error(intermNode->getLoc(), "Constant value cannot be passed for 'out' or 'inout' parameters.", "Error", "");
|
||
}
|
||
qualifierList.push_back(qual);
|
||
}
|
||
|
||
if (builtIn)
|
||
nonOpBuiltInCheck(loc, *fnCandidate, *result->getAsAggregate());
|
||
}
|
||
}
|
||
}
|
||
|
||
// generic error recovery
|
||
// TODO: simplification: localize all the error recoveries that look like this, and taking type into account to reduce cascades
|
||
if (result == 0) {
|
||
TConstUnionArray unionArray(1);
|
||
unionArray[0].setDConst(0.0);
|
||
result = intermediate.addConstantUnion(unionArray, TType(EbtFloat, EvqConst), loc);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
//
|
||
// Do additional checking of built-in function calls that were not mapped
|
||
// to built-in operations (e.g., texturing functions).
|
||
//
|
||
// Assumes there has been a semantically correct match to a built-in function.
|
||
//
|
||
void TParseContext::nonOpBuiltInCheck(TSourceLoc loc, const TFunction& fnCandidate, TIntermAggregate& callNode)
|
||
{
|
||
// built-in texturing functions get their return value precision from the precision of the sampler
|
||
if (fnCandidate.getType().getQualifier().precision == EpqNone &&
|
||
fnCandidate.getParamCount() > 0 && fnCandidate[0].type->getBasicType() == EbtSampler)
|
||
callNode.getQualifier().precision = callNode.getAsAggregate()->getSequence()[0]->getAsTyped()->getQualifier().precision;
|
||
|
||
if (fnCandidate.getName().compare(0, 7, "texture") == 0) {
|
||
if (fnCandidate.getName().compare(0, 13, "textureGather") == 0) {
|
||
TString featureString = fnCandidate.getName() + "(...)";
|
||
const char* feature = featureString.c_str();
|
||
requireProfile(loc, ~EEsProfile, feature);
|
||
|
||
int compArg = -1; // track which argument, if any, is the constant component argument
|
||
if (fnCandidate.getName().compare("textureGatherOffset") == 0) {
|
||
// GL_ARB_texture_gather is good enough for 2D non-shadow textures with no component argument
|
||
if (fnCandidate[0].type->getSampler().dim == Esd2D && ! fnCandidate[0].type->getSampler().shadow && fnCandidate.getParamCount() == 3)
|
||
profileRequires(loc, ~EEsProfile, 400, GL_ARB_texture_gather, feature);
|
||
else
|
||
profileRequires(loc, ~EEsProfile, 400, GL_ARB_gpu_shader5, feature);
|
||
if (! fnCandidate[0].type->getSampler().shadow)
|
||
compArg = 3;
|
||
} else if (fnCandidate.getName().compare("textureGatherOffsets") == 0) {
|
||
profileRequires(loc, ~EEsProfile, 400, GL_ARB_gpu_shader5, feature);
|
||
if (! fnCandidate[0].type->getSampler().shadow)
|
||
compArg = 3;
|
||
// check for constant offsets
|
||
int offsetArg = fnCandidate[0].type->getSampler().shadow ? 3 : 2;
|
||
if (! callNode.getSequence()[offsetArg]->getAsConstantUnion())
|
||
error(loc, "must be a compile-time constant:", feature, "offsets argument");
|
||
} else if (fnCandidate.getName().compare("textureGather") == 0) {
|
||
// More than two arguments needs gpu_shader5, and rectangular or shadow needs gpu_shader5,
|
||
// otherwise, need GL_ARB_texture_gather.
|
||
if (fnCandidate.getParamCount() > 2 || fnCandidate[0].type->getSampler().dim == EsdRect || fnCandidate[0].type->getSampler().shadow) {
|
||
profileRequires(loc, ~EEsProfile, 400, GL_ARB_gpu_shader5, feature);
|
||
if (! fnCandidate[0].type->getSampler().shadow)
|
||
compArg = 2;
|
||
} else
|
||
profileRequires(loc, ~EEsProfile, 400, GL_ARB_texture_gather, feature);
|
||
}
|
||
|
||
if (compArg > 0 && compArg < fnCandidate.getParamCount()) {
|
||
if (callNode.getSequence()[compArg]->getAsConstantUnion()) {
|
||
int value = callNode.getSequence()[compArg]->getAsConstantUnion()->getConstArray()[0].getIConst();
|
||
if (value < 0 || value > 3)
|
||
error(loc, "must be 0, 1, 2, or 3:", feature, "component argument");
|
||
} else
|
||
error(loc, "must be a compile-time constant:", feature, "component argument");
|
||
}
|
||
} else {
|
||
// this is only for functions not starting "textureGather"...
|
||
if (fnCandidate.getName().find("Offset") != TString::npos) {
|
||
|
||
// Handle texture-offset limits checking
|
||
int arg = -1;
|
||
if (fnCandidate.getName().compare("textureOffset") == 0)
|
||
arg = 2;
|
||
else if (fnCandidate.getName().compare("texelFetchOffset") == 0)
|
||
arg = 3;
|
||
else if (fnCandidate.getName().compare("textureProjOffset") == 0)
|
||
arg = 2;
|
||
else if (fnCandidate.getName().compare("textureLodOffset") == 0)
|
||
arg = 3;
|
||
else if (fnCandidate.getName().compare("textureProjLodOffset") == 0)
|
||
arg = 3;
|
||
else if (fnCandidate.getName().compare("textureGradOffset") == 0)
|
||
arg = 4;
|
||
else if (fnCandidate.getName().compare("textureProjGradOffset") == 0)
|
||
arg = 4;
|
||
|
||
if (arg > 0) {
|
||
if (! callNode.getSequence()[arg]->getAsConstantUnion())
|
||
error(loc, "argument must be compile-time constant", "texel offset", "");
|
||
else {
|
||
const TType& type = callNode.getSequence()[arg]->getAsTyped()->getType();
|
||
for (int c = 0; c < type.getVectorSize(); ++c) {
|
||
int offset = callNode.getSequence()[arg]->getAsConstantUnion()->getConstArray()[c].getIConst();
|
||
if (offset > resources.maxProgramTexelOffset || offset < resources.minProgramTexelOffset)
|
||
error(loc, "value is out of range:", "texel offset", "[gl_MinProgramTexelOffset, gl_MaxProgramTexelOffset]");
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
//
|
||
// Handle seeing a built-in-type constructor call in the grammar.
|
||
//
|
||
TFunction* TParseContext::handleConstructorCall(TSourceLoc loc, TPublicType& publicType)
|
||
{
|
||
publicType.qualifier.precision = EpqNone;
|
||
TType type(publicType);
|
||
|
||
if (type.isArray()) {
|
||
profileRequires(loc, ENoProfile, 120, GL_3DL_array_objects, "arrayed constructor");
|
||
profileRequires(loc, EEsProfile, 300, 0, "arrayed constructor");
|
||
}
|
||
|
||
TOperator op = mapTypeToConstructorOp(type);
|
||
|
||
if (op == EOpNull) {
|
||
error(loc, "cannot construct this type", TType::getBasicString(publicType.basicType), "");
|
||
op = EOpConstructFloat;
|
||
publicType.basicType = EbtFloat;
|
||
TType errorType(publicType);
|
||
type.shallowCopy(errorType);
|
||
}
|
||
|
||
TString empty("");
|
||
|
||
return new TFunction(&empty, type, op);
|
||
}
|
||
|
||
//
|
||
// Given a type, find what operation would construct it.
|
||
//
|
||
TOperator TParseContext::mapTypeToConstructorOp(const TType& type)
|
||
{
|
||
if (type.isStruct())
|
||
return EOpConstructStruct;
|
||
|
||
TOperator op;
|
||
switch (type.getBasicType()) {
|
||
case EbtFloat:
|
||
if (type.isMatrix()) {
|
||
switch (type.getMatrixCols()) {
|
||
case 2:
|
||
switch (type.getMatrixRows()) {
|
||
case 2: op = EOpConstructMat2x2; break;
|
||
case 3: op = EOpConstructMat2x3; break;
|
||
case 4: op = EOpConstructMat2x4; break;
|
||
default: break; // some compilers want this
|
||
}
|
||
break;
|
||
case 3:
|
||
switch (type.getMatrixRows()) {
|
||
case 2: op = EOpConstructMat3x2; break;
|
||
case 3: op = EOpConstructMat3x3; break;
|
||
case 4: op = EOpConstructMat3x4; break;
|
||
default: break; // some compilers want this
|
||
}
|
||
break;
|
||
case 4:
|
||
switch (type.getMatrixRows()) {
|
||
case 2: op = EOpConstructMat4x2; break;
|
||
case 3: op = EOpConstructMat4x3; break;
|
||
case 4: op = EOpConstructMat4x4; break;
|
||
default: break; // some compilers want this
|
||
}
|
||
break;
|
||
default: break; // some compilers want this
|
||
}
|
||
} else {
|
||
switch(type.getVectorSize()) {
|
||
case 1: op = EOpConstructFloat; break;
|
||
case 2: op = EOpConstructVec2; break;
|
||
case 3: op = EOpConstructVec3; break;
|
||
case 4: op = EOpConstructVec4; break;
|
||
default: break; // some compilers want this
|
||
}
|
||
}
|
||
break;
|
||
case EbtDouble:
|
||
if (type.getMatrixCols()) {
|
||
switch (type.getMatrixCols()) {
|
||
case 2:
|
||
switch (type.getMatrixRows()) {
|
||
case 2: op = EOpConstructDMat2x2; break;
|
||
case 3: op = EOpConstructDMat2x3; break;
|
||
case 4: op = EOpConstructDMat2x4; break;
|
||
default: break; // some compilers want this
|
||
}
|
||
break;
|
||
case 3:
|
||
switch (type.getMatrixRows()) {
|
||
case 2: op = EOpConstructDMat3x2; break;
|
||
case 3: op = EOpConstructDMat3x3; break;
|
||
case 4: op = EOpConstructDMat3x4; break;
|
||
default: break; // some compilers want this
|
||
}
|
||
break;
|
||
case 4:
|
||
switch (type.getMatrixRows()) {
|
||
case 2: op = EOpConstructDMat4x2; break;
|
||
case 3: op = EOpConstructDMat4x3; break;
|
||
case 4: op = EOpConstructDMat4x4; break;
|
||
default: break; // some compilers want this
|
||
}
|
||
break;
|
||
}
|
||
} else {
|
||
switch(type.getVectorSize()) {
|
||
case 1: op = EOpConstructDouble; break;
|
||
case 2: op = EOpConstructDVec2; break;
|
||
case 3: op = EOpConstructDVec3; break;
|
||
case 4: op = EOpConstructDVec4; break;
|
||
default: break; // some compilers want this
|
||
}
|
||
}
|
||
break;
|
||
case EbtInt:
|
||
switch(type.getVectorSize()) {
|
||
case 1: op = EOpConstructInt; break;
|
||
case 2: op = EOpConstructIVec2; break;
|
||
case 3: op = EOpConstructIVec3; break;
|
||
case 4: op = EOpConstructIVec4; break;
|
||
default: break; // some compilers want this
|
||
}
|
||
break;
|
||
case EbtUint:
|
||
switch(type.getVectorSize()) {
|
||
case 1: op = EOpConstructUint; break;
|
||
case 2: op = EOpConstructUVec2; break;
|
||
case 3: op = EOpConstructUVec3; break;
|
||
case 4: op = EOpConstructUVec4; break;
|
||
default: break; // some compilers want this
|
||
}
|
||
break;
|
||
case EbtBool:
|
||
switch(type.getVectorSize()) {
|
||
case 1: op = EOpConstructBool; break;
|
||
case 2: op = EOpConstructBVec2; break;
|
||
case 3: op = EOpConstructBVec3; break;
|
||
case 4: op = EOpConstructBVec4; break;
|
||
default: break; // some compilers want this
|
||
}
|
||
break;
|
||
default:
|
||
op = EOpNull;
|
||
break;
|
||
}
|
||
|
||
return op;
|
||
}
|
||
|
||
//
|
||
// Same error message for all places assignments don't work.
|
||
//
|
||
void TParseContext::assignError(TSourceLoc loc, const char* op, TString left, TString right)
|
||
{
|
||
error(loc, "", op, "cannot convert from '%s' to '%s'",
|
||
right.c_str(), left.c_str());
|
||
}
|
||
|
||
//
|
||
// Same error message for all places unary operations don't work.
|
||
//
|
||
void TParseContext::unaryOpError(TSourceLoc loc, const char* op, TString operand)
|
||
{
|
||
error(loc, " wrong operand type", op,
|
||
"no operation '%s' exists that takes an operand of type %s (or there is no acceptable conversion)",
|
||
op, operand.c_str());
|
||
}
|
||
|
||
//
|
||
// Same error message for all binary operations don't work.
|
||
//
|
||
void TParseContext::binaryOpError(TSourceLoc loc, const char* op, TString left, TString right)
|
||
{
|
||
error(loc, " wrong operand types:", op,
|
||
"no operation '%s' exists that takes a left-hand operand of type '%s' and "
|
||
"a right operand of type '%s' (or there is no acceptable conversion)",
|
||
op, left.c_str(), right.c_str());
|
||
}
|
||
|
||
//
|
||
// A basic type of EbtVoid is a key that the name string was seen in the source, but
|
||
// it was not found as a variable in the symbol table. If so, give the error
|
||
// message and insert a dummy variable in the symbol table to prevent future errors.
|
||
//
|
||
void TParseContext::variableCheck(TIntermTyped*& nodePtr)
|
||
{
|
||
TIntermSymbol* symbol = nodePtr->getAsSymbolNode();
|
||
if (! symbol)
|
||
return;
|
||
|
||
if (symbol->getType().getBasicType() == EbtVoid) {
|
||
error(symbol->getLoc(), "undeclared identifier", symbol->getName().c_str(), "");
|
||
|
||
// Add to symbol table to prevent future error messages on the same name
|
||
|
||
TVariable* fakeVariable = new TVariable(&symbol->getName(), TType(EbtFloat));
|
||
symbolTable.insert(*fakeVariable);
|
||
|
||
// substitute a symbol node for this new variable
|
||
nodePtr = intermediate.addSymbol(fakeVariable->getUniqueId(),
|
||
fakeVariable->getName(),
|
||
fakeVariable->getType(), symbol->getLoc());
|
||
} else {
|
||
switch (symbol->getQualifier().storage) {
|
||
case EvqPointCoord:
|
||
profileRequires(symbol->getLoc(), ENoProfile, 120, 0, "gl_PointCoord");
|
||
break;
|
||
default: break; // some compilers want this
|
||
}
|
||
}
|
||
}
|
||
|
||
//
|
||
// Both test and if necessary, spit out an error, to see if the node is really
|
||
// an l-value that can be operated on this way.
|
||
//
|
||
// Returns true if the was an error.
|
||
//
|
||
bool TParseContext::lValueErrorCheck(TSourceLoc loc, const char* op, TIntermTyped* node)
|
||
{
|
||
TIntermSymbol* symNode = node->getAsSymbolNode();
|
||
TIntermBinary* binaryNode = node->getAsBinaryNode();
|
||
|
||
if (binaryNode) {
|
||
bool errorReturn;
|
||
|
||
switch(binaryNode->getOp()) {
|
||
case EOpIndexDirect:
|
||
case EOpIndexIndirect:
|
||
case EOpIndexDirectStruct:
|
||
return lValueErrorCheck(loc, op, binaryNode->getLeft());
|
||
case EOpVectorSwizzle:
|
||
errorReturn = lValueErrorCheck(loc, op, binaryNode->getLeft());
|
||
if (!errorReturn) {
|
||
int offset[4] = {0,0,0,0};
|
||
|
||
TIntermTyped* rightNode = binaryNode->getRight();
|
||
TIntermAggregate *aggrNode = rightNode->getAsAggregate();
|
||
|
||
for (TIntermSequence::iterator p = aggrNode->getSequence().begin();
|
||
p != aggrNode->getSequence().end(); p++) {
|
||
int value = (*p)->getAsTyped()->getAsConstantUnion()->getConstArray()[0].getIConst();
|
||
offset[value]++;
|
||
if (offset[value] > 1) {
|
||
error(loc, " l-value of swizzle cannot have duplicate components", op, "", "");
|
||
|
||
return true;
|
||
}
|
||
}
|
||
}
|
||
|
||
return errorReturn;
|
||
default:
|
||
break;
|
||
}
|
||
error(loc, " l-value required", op, "", "");
|
||
|
||
return true;
|
||
}
|
||
|
||
|
||
const char* symbol = 0;
|
||
if (symNode != 0)
|
||
symbol = symNode->getName().c_str();
|
||
|
||
const char* message = 0;
|
||
switch (node->getQualifier().storage) {
|
||
case EvqConst: message = "can't modify a const"; break;
|
||
case EvqConstReadOnly: message = "can't modify a const"; break;
|
||
case EvqVaryingIn: message = "can't modify shader input"; break;
|
||
case EvqUniform: message = "can't modify a uniform"; break;
|
||
case EvqInstanceId: message = "can't modify gl_InstanceID"; break;
|
||
case EvqVertexId: message = "can't modify gl_VertexID"; break;
|
||
case EvqFace: message = "can't modify gl_FrontFace"; break;
|
||
case EvqFragCoord: message = "can't modify gl_FragCoord"; break;
|
||
case EvqPointCoord: message = "can't modify gl_PointCoord"; break;
|
||
default:
|
||
|
||
//
|
||
// Type that can't be written to?
|
||
//
|
||
switch (node->getBasicType()) {
|
||
case EbtSampler:
|
||
message = "can't modify a sampler";
|
||
break;
|
||
case EbtVoid:
|
||
message = "can't modify void";
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (message == 0 && binaryNode == 0 && symNode == 0) {
|
||
error(loc, " l-value required", op, "", "");
|
||
|
||
return true;
|
||
}
|
||
|
||
|
||
//
|
||
// Everything else is okay, no error.
|
||
//
|
||
if (message == 0)
|
||
return false;
|
||
|
||
//
|
||
// If we get here, we have an error and a message.
|
||
//
|
||
if (symNode)
|
||
error(loc, " l-value required", op, "\"%s\" (%s)", symbol, message);
|
||
else
|
||
error(loc, " l-value required", op, "(%s)", message);
|
||
|
||
return true;
|
||
}
|
||
|
||
//
|
||
// Both test, and if necessary spit out an error, to see if the node is really
|
||
// a constant.
|
||
//
|
||
void TParseContext::constantValueCheck(TIntermTyped* node, const char* token)
|
||
{
|
||
if (node->getQualifier().storage != EvqConst)
|
||
error(node->getLoc(), "constant expression required", token, "");
|
||
}
|
||
|
||
//
|
||
// Both test, and if necessary spit out an error, to see if the node is really
|
||
// an integer.
|
||
//
|
||
void TParseContext::integerCheck(TIntermTyped* node, const char* token)
|
||
{
|
||
if ((node->getBasicType() == EbtInt || node->getBasicType() == EbtUint) && node->isScalar())
|
||
return;
|
||
|
||
error(node->getLoc(), "scalar integer expression required", token, "");
|
||
}
|
||
|
||
//
|
||
// Both test, and if necessary spit out an error, to see if we are currently
|
||
// globally scoped.
|
||
//
|
||
void TParseContext::globalCheck(TSourceLoc loc, const char* token)
|
||
{
|
||
if (! symbolTable.atGlobalLevel())
|
||
error(loc, "not allowed in nested scope", token, "");
|
||
}
|
||
|
||
//
|
||
// If it starts "gl_" or has double underscore, it's a reserved name.
|
||
// Except, if the symbol table is at a built-in level,
|
||
// which is when we are parsing built-ins.
|
||
//
|
||
void TParseContext::reservedErrorCheck(TSourceLoc loc, const TString& identifier)
|
||
{
|
||
if (! symbolTable.atBuiltInLevel()) {
|
||
if (builtInName(identifier))
|
||
error(loc, "reserved built-in name:", "gl_", identifier.c_str());
|
||
if (identifier.find("__") != TString::npos)
|
||
error(loc, "Two consecutive underscores are reserved for future use.", identifier.c_str(), "", "");
|
||
}
|
||
}
|
||
|
||
//
|
||
// Reserved errors for the preprocessor.
|
||
//
|
||
void TParseContext::reservedPpErrorCheck(TSourceLoc loc, const char* identifier, const char* op)
|
||
{
|
||
// "All macro names containing two consecutive underscores ( __ ) are reserved for future use as predefined
|
||
// macro names. All macro names prefixed with "GL_" ("GL" followed by a single underscore) are also
|
||
// reserved."
|
||
if (strncmp(identifier, "GL_", 3) == 0)
|
||
error(loc, "can't use with built-in names (\"GL_\" prefix)", op, "");
|
||
else if (strstr(identifier, "__") != 0)
|
||
error(loc, "can't use with built-in names (containing consecutive underscores)", op, "");
|
||
}
|
||
|
||
//
|
||
// See if this version/profile allows use of the line-continuation character '\'.
|
||
//
|
||
// Returns true if a line continuation should be done.
|
||
//
|
||
bool TParseContext::lineContinuationCheck(TSourceLoc loc, bool endOfComment)
|
||
{
|
||
const char* message = "line continuation";
|
||
|
||
bool lineContinuationAllowed = (profile == EEsProfile && version >= 300) ||
|
||
(profile != EEsProfile && version >= 420);
|
||
|
||
if (endOfComment) {
|
||
if (lineContinuationAllowed)
|
||
warn(loc, "used at end of comment; the following line is still part of the comment", message, "");
|
||
else
|
||
warn(loc, "used at end of comment, but this version does not provide line continuation", message, "");
|
||
|
||
return lineContinuationAllowed;
|
||
}
|
||
|
||
if (messages & EShMsgRelaxedErrors) {
|
||
warn(loc, "not allowed in this version", message, "");
|
||
} else {
|
||
requireProfile(loc, EEsProfile | ECoreProfile | ECompatibilityProfile, message);
|
||
profileRequires(loc, EEsProfile, 300, 0, message);
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 420, 0, message);
|
||
}
|
||
|
||
return lineContinuationAllowed;
|
||
}
|
||
|
||
bool TParseContext::builtInName(const TString& identifier)
|
||
{
|
||
return identifier.compare(0, 3, "gl_") == 0;
|
||
}
|
||
|
||
//
|
||
// Make sure there is enough data provided to the constructor to build
|
||
// something of the type of the constructor. Also returns the type of
|
||
// the constructor.
|
||
//
|
||
// Returns true if there was an error in construction.
|
||
//
|
||
bool TParseContext::constructorError(TSourceLoc loc, TIntermNode* node, TFunction& function, TOperator op, TType& type)
|
||
{
|
||
type.shallowCopy(function.getType());
|
||
|
||
bool constructingMatrix = false;
|
||
switch(op) {
|
||
case EOpConstructMat2x2:
|
||
case EOpConstructMat2x3:
|
||
case EOpConstructMat2x4:
|
||
case EOpConstructMat3x2:
|
||
case EOpConstructMat3x3:
|
||
case EOpConstructMat3x4:
|
||
case EOpConstructMat4x2:
|
||
case EOpConstructMat4x3:
|
||
case EOpConstructMat4x4:
|
||
case EOpConstructDMat2x2:
|
||
case EOpConstructDMat2x3:
|
||
case EOpConstructDMat2x4:
|
||
case EOpConstructDMat3x2:
|
||
case EOpConstructDMat3x3:
|
||
case EOpConstructDMat3x4:
|
||
case EOpConstructDMat4x2:
|
||
case EOpConstructDMat4x3:
|
||
case EOpConstructDMat4x4:
|
||
constructingMatrix = true;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
//
|
||
// Note: It's okay to have too many components available, but not okay to have unused
|
||
// arguments. 'full' will go to true when enough args have been seen. If we loop
|
||
// again, there is an extra argument, so 'overfull' will become true.
|
||
//
|
||
|
||
int size = 0;
|
||
bool constType = true;
|
||
bool full = false;
|
||
bool overFull = false;
|
||
bool matrixInMatrix = false;
|
||
bool arrayArg = false;
|
||
for (int i = 0; i < function.getParamCount(); ++i) {
|
||
size += function[i].type->getObjectSize();
|
||
|
||
if (constructingMatrix && function[i].type->isMatrix())
|
||
matrixInMatrix = true;
|
||
if (full)
|
||
overFull = true;
|
||
if (op != EOpConstructStruct && ! type.isArray() && size >= type.getObjectSize())
|
||
full = true;
|
||
if (function[i].type->getQualifier().storage != EvqConst)
|
||
constType = false;
|
||
if (function[i].type->isArray())
|
||
arrayArg = true;
|
||
}
|
||
|
||
if (constType)
|
||
type.getQualifier().storage = EvqConst;
|
||
|
||
if (type.isArray()) {
|
||
if (type.getArraySize() == 0) {
|
||
// auto adapt the constructor type to the number of arguments
|
||
type.changeArraySize(function.getParamCount());
|
||
} else if (type.getArraySize() != function.getParamCount()) {
|
||
error(loc, "array constructor needs one argument per array element", "constructor", "");
|
||
return true;
|
||
}
|
||
}
|
||
|
||
if (arrayArg && op != EOpConstructStruct) {
|
||
error(loc, "constructing from a non-dereferenced array", "constructor", "");
|
||
return true;
|
||
}
|
||
|
||
if (matrixInMatrix && ! type.isArray()) {
|
||
profileRequires(loc, ENoProfile, 120, 0, "constructing matrix from matrix");
|
||
return false;
|
||
}
|
||
|
||
if (overFull) {
|
||
error(loc, "too many arguments", "constructor", "");
|
||
return true;
|
||
}
|
||
|
||
if (op == EOpConstructStruct && ! type.isArray() && type.getStruct()->size() != function.getParamCount()) {
|
||
error(loc, "Number of constructor parameters does not match the number of structure fields", "constructor", "");
|
||
return true;
|
||
}
|
||
|
||
if ((op != EOpConstructStruct && size != 1 && size < type.getObjectSize()) ||
|
||
(op == EOpConstructStruct && size < type.getObjectSize())) {
|
||
error(loc, "not enough data provided for construction", "constructor", "");
|
||
return true;
|
||
}
|
||
|
||
TIntermTyped* typed = node->getAsTyped();
|
||
if (typed == 0) {
|
||
error(loc, "constructor argument does not have a type", "constructor", "");
|
||
return true;
|
||
}
|
||
if (op != EOpConstructStruct && typed->getBasicType() == EbtSampler) {
|
||
error(loc, "cannot convert a sampler", "constructor", "");
|
||
return true;
|
||
}
|
||
if (typed->getBasicType() == EbtVoid) {
|
||
error(loc, "cannot convert a void", "constructor", "");
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
// Checks to see if a void variable has been declared and raise an error message for such a case
|
||
//
|
||
// returns true in case of an error
|
||
//
|
||
bool TParseContext::voidErrorCheck(TSourceLoc loc, const TString& identifier, const TBasicType basicType)
|
||
{
|
||
if (basicType == EbtVoid) {
|
||
error(loc, "illegal use of type 'void'", identifier.c_str(), "");
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
// Checks to see if the node (for the expression) contains a scalar boolean expression or not
|
||
void TParseContext::boolCheck(TSourceLoc loc, const TIntermTyped* type)
|
||
{
|
||
if (type->getBasicType() != EbtBool || type->isArray() || type->isMatrix() || type->isVector())
|
||
error(loc, "boolean expression expected", "", "");
|
||
}
|
||
|
||
// This function checks to see if the node (for the expression) contains a scalar boolean expression or not
|
||
void TParseContext::boolCheck(TSourceLoc loc, const TPublicType& pType)
|
||
{
|
||
if (pType.basicType != EbtBool || pType.arraySizes || pType.matrixCols > 1 || (pType.vectorSize > 1))
|
||
error(loc, "boolean expression expected", "", "");
|
||
}
|
||
|
||
void TParseContext::samplerCheck(TSourceLoc loc, const TType& type, const TString& identifier)
|
||
{
|
||
if (type.getQualifier().storage == EvqUniform)
|
||
return;
|
||
|
||
if (type.getBasicType() == EbtStruct && containsSampler(type))
|
||
error(loc, "non-uniform struct contains a sampler or image:", type.getBasicTypeString().c_str(), identifier.c_str());
|
||
else if (type.getBasicType() == EbtSampler && type.getQualifier().storage != EvqUniform)
|
||
error(loc, "sampler/image types can only be used in uniform variables or function parameters:", type.getBasicTypeString().c_str(), identifier.c_str());
|
||
}
|
||
|
||
//
|
||
// move from parameter/unknown qualifiers to pipeline in/out qualifiers
|
||
//
|
||
void TParseContext::pipeInOutFix(TSourceLoc loc, TQualifier& qualifier)
|
||
{
|
||
switch (qualifier.storage) {
|
||
case EvqIn:
|
||
profileRequires(loc, ENoProfile, 130, 0, "in for stage inputs");
|
||
profileRequires(loc, EEsProfile, 300, 0, "in for stage inputs");
|
||
qualifier.storage = EvqVaryingIn;
|
||
break;
|
||
case EvqOut:
|
||
profileRequires(loc, ENoProfile, 130, 0, "out for stage outputs");
|
||
profileRequires(loc, EEsProfile, 300, 0, "out for stage outputs");
|
||
qualifier.storage = EvqVaryingOut;
|
||
break;
|
||
case EvqInOut:
|
||
qualifier.storage = EvqVaryingIn;
|
||
error(loc, "cannot use 'inout' at global scope", "", "");
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
void TParseContext::globalQualifierCheck(TSourceLoc loc, const TQualifier& qualifier, const TPublicType& publicType)
|
||
{
|
||
if (! symbolTable.atGlobalLevel())
|
||
return;
|
||
|
||
if (qualifier.storage != EvqVaryingIn && qualifier.storage != EvqVaryingOut)
|
||
return;
|
||
|
||
// now, knowing it is a shader in/out, do all the in/out semantic checks
|
||
|
||
if (publicType.basicType == EbtBool) {
|
||
error(loc, "cannot be bool", GetStorageQualifierString(qualifier.storage), "");
|
||
|
||
return;
|
||
}
|
||
|
||
if (language == EShLangVertex && qualifier.storage == EvqVaryingIn) {
|
||
if (publicType.basicType == EbtStruct) {
|
||
error(loc, "cannot be a structure or array", GetStorageQualifierString(qualifier.storage), "");
|
||
|
||
return;
|
||
}
|
||
if (publicType.arraySizes) {
|
||
requireProfile(loc, ~EEsProfile, "vertex input arrays");
|
||
profileRequires(loc, ENoProfile, 150, 0, "vertex input arrays");
|
||
}
|
||
}
|
||
|
||
if (language == EShLangFragment && qualifier.storage == EvqVaryingOut) {
|
||
profileRequires(loc, EEsProfile, 300, 0, "fragment shader output");
|
||
if (publicType.basicType == EbtStruct) {
|
||
error(loc, "cannot be a structure", GetStorageQualifierString(qualifier.storage), "");
|
||
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (language == EShLangVertex && qualifier.storage == EvqVaryingOut) {
|
||
if (publicType.userDef) {
|
||
profileRequires(loc, EEsProfile, 300, 0, "vertex-shader struct output");
|
||
profileRequires(loc, ~EEsProfile, 150, 0, "vertex-shader struct output");
|
||
}
|
||
}
|
||
|
||
if (language == EShLangFragment && qualifier.storage == EvqVaryingIn) {
|
||
if (publicType.userDef) {
|
||
profileRequires(loc, EEsProfile, 300, 0, "fragment-shader struct input");
|
||
profileRequires(loc, ~EEsProfile, 150, 0, "fragment-shader struct input");
|
||
}
|
||
}
|
||
|
||
if (publicType.basicType == EbtInt || publicType.basicType == EbtUint || publicType.basicType == EbtDouble) {
|
||
profileRequires(loc, EEsProfile, 300, 0, "shader input/output");
|
||
if (! qualifier.flat) {
|
||
if (qualifier.storage == EvqVaryingIn && language == EShLangFragment)
|
||
error(loc, "must be qualified as flat", TType::getBasicString(publicType.basicType), GetStorageQualifierString(qualifier.storage));
|
||
else if (qualifier.storage == EvqVaryingOut && language == EShLangVertex && version == 300)
|
||
error(loc, "must be qualified as flat", TType::getBasicString(publicType.basicType), GetStorageQualifierString(qualifier.storage));
|
||
}
|
||
}
|
||
|
||
if (language == EShLangVertex && qualifier.storage == EvqVaryingIn &&
|
||
(qualifier.isAuxiliary() || qualifier.isInterpolation() || qualifier.isMemory() || qualifier.invariant))
|
||
error(loc, "vertex input cannot be further qualified", "", "");
|
||
}
|
||
|
||
//
|
||
// Merge characteristics of the 'src' qualifier into the 'dst'.
|
||
// If there is duplication, issue error messages, unless 'force'
|
||
// is specified, which means to just override default settings.
|
||
//
|
||
// Also, when force is false, it will be assumed that 'src' follows
|
||
// 'dst', for the purpose of error checking order for versions
|
||
// that require specific orderings of qualifiers.
|
||
//
|
||
void TParseContext::mergeQualifiers(TSourceLoc loc, TQualifier& dst, const TQualifier& src, bool force)
|
||
{
|
||
// Multiple auxiliary qualifiers (mostly done later by 'individual qualifiers')
|
||
if (src.isAuxiliary() && dst.isAuxiliary())
|
||
error(loc, "can only have one auxiliary qualifier (centroid, patch, and sample)", "", "");
|
||
|
||
// Multiple interpolation qualifiers (mostly done later by 'individual qualifiers')
|
||
if (src.isInterpolation() && dst.isInterpolation())
|
||
error(loc, "can only have one interpolation qualifier (flat, smooth, noperspective)", "", "");
|
||
|
||
// Ordering
|
||
if (! force && version < 420) {
|
||
// non-function parameters
|
||
if (src.invariant && (dst.isInterpolation() || dst.isAuxiliary() || dst.storage != EvqTemporary || dst.precision != EpqNone))
|
||
error(loc, "invariant qualifier must appear first", "", "");
|
||
else if (src.isInterpolation() && (dst.isAuxiliary() || dst.storage != EvqTemporary || dst.precision != EpqNone))
|
||
error(loc, "interpolation qualifiers must appear before storage and precision qualifiers", "", "");
|
||
else if (src.isAuxiliary() && (dst.storage != EvqTemporary || dst.precision != EpqNone))
|
||
error(loc, "Auxiliary qualifiers (centroid, patch, and sample) must appear before storage and precision qualifiers", "", "");
|
||
else if (src.storage != EvqTemporary && (dst.precision != EpqNone))
|
||
error(loc, "precision qualifier must appear as last qualifier", "", "");
|
||
|
||
// function parameters
|
||
if (src.storage == EvqConst && (dst.storage == EvqIn || dst.storage == EvqOut))
|
||
error(loc, "in/out must appear before const", "", "");
|
||
}
|
||
|
||
// Storage qualification
|
||
if (dst.storage == EvqTemporary || dst.storage == EvqGlobal)
|
||
dst.storage = src.storage;
|
||
else if ((dst.storage == EvqIn && src.storage == EvqOut) ||
|
||
(dst.storage == EvqOut && src.storage == EvqIn))
|
||
dst.storage = EvqInOut;
|
||
else if ((dst.storage == EvqIn && src.storage == EvqConst) ||
|
||
(dst.storage == EvqConst && src.storage == EvqIn))
|
||
dst.storage = EvqConstReadOnly;
|
||
else if (src.storage != EvqTemporary)
|
||
error(loc, "too many storage qualifiers", GetStorageQualifierString(src.storage), "");
|
||
|
||
// Precision qualifiers
|
||
if (! force && src.precision != EpqNone && dst.precision != EpqNone)
|
||
error(loc, "only one precision qualifier allowed", GetPrecisionQualifierString(src.precision), "");
|
||
if (dst.precision == EpqNone || (force && src.precision != EpqNone))
|
||
dst.precision = src.precision;
|
||
|
||
// Layout qualifiers
|
||
mergeObjectLayoutQualifiers(loc, dst, src);
|
||
|
||
// individual qualifiers
|
||
bool repeated = false;
|
||
#define MERGE_SINGLETON(field) repeated |= dst.field && src.field; dst.field |= src.field;
|
||
MERGE_SINGLETON(invariant);
|
||
MERGE_SINGLETON(centroid);
|
||
MERGE_SINGLETON(smooth);
|
||
MERGE_SINGLETON(flat);
|
||
MERGE_SINGLETON(nopersp);
|
||
MERGE_SINGLETON(patch);
|
||
MERGE_SINGLETON(sample);
|
||
MERGE_SINGLETON(shared);
|
||
MERGE_SINGLETON(coherent);
|
||
MERGE_SINGLETON(volatil);
|
||
MERGE_SINGLETON(restrict);
|
||
MERGE_SINGLETON(readonly);
|
||
MERGE_SINGLETON(writeonly);
|
||
|
||
if (repeated)
|
||
error(loc, "replicated qualifiers", "", "");
|
||
}
|
||
|
||
void TParseContext::setDefaultPrecision(TSourceLoc loc, TPublicType& publicType, TPrecisionQualifier qualifier)
|
||
{
|
||
TBasicType basicType = publicType.basicType;
|
||
|
||
if (basicType == EbtSampler) {
|
||
defaultSamplerPrecision[computeSamplerTypeIndex(publicType.sampler)] = qualifier;
|
||
|
||
return; // all is well
|
||
}
|
||
|
||
if (basicType == EbtInt || basicType == EbtFloat) {
|
||
if (publicType.isScalar()) {
|
||
defaultPrecision[basicType] = qualifier;
|
||
if (basicType == EbtInt)
|
||
defaultPrecision[EbtUint] = qualifier;
|
||
|
||
return; // all is well
|
||
}
|
||
}
|
||
|
||
error(loc, "cannot apply precision statement to this type; use 'float', 'int' or a sampler type", TType::getBasicString(basicType), "");
|
||
}
|
||
|
||
// used to flatten the sampler type space into a single dimension
|
||
// correlates with the declaration of defaultSamplerPrecision[]
|
||
int TParseContext::computeSamplerTypeIndex(TSampler& sampler)
|
||
{
|
||
int arrayIndex = sampler.arrayed ? 1 : 0;
|
||
int shadowIndex = sampler.shadow ? 1 : 0;
|
||
int externalIndex = sampler.external ? 1 : 0;
|
||
|
||
return EsdNumDims * (EbtNumTypes * (2 * (2 * arrayIndex + shadowIndex) + externalIndex) + sampler.type) + sampler.dim;
|
||
}
|
||
|
||
TPrecisionQualifier TParseContext::getDefaultPrecision(TPublicType& publicType)
|
||
{
|
||
if (publicType.basicType == EbtSampler)
|
||
return defaultSamplerPrecision[computeSamplerTypeIndex(publicType.sampler)];
|
||
else
|
||
return defaultPrecision[publicType.basicType];
|
||
}
|
||
|
||
void TParseContext::precisionQualifierCheck(TSourceLoc loc, TPublicType& publicType)
|
||
{
|
||
// Built-in symbols are allowed some ambiguous precisions, to be pinned down
|
||
// later by context.
|
||
if (profile != EEsProfile || parsingBuiltins)
|
||
return;
|
||
|
||
if (publicType.basicType == EbtFloat || publicType.basicType == EbtUint || publicType.basicType == EbtInt || publicType.basicType == EbtSampler) {
|
||
if (publicType.qualifier.precision == EpqNone) {
|
||
if (messages & EShMsgRelaxedErrors)
|
||
warn(loc, "type requires declaration of default precision qualifier", TType::getBasicString(publicType.basicType), "substituting 'mediump'");
|
||
else
|
||
error(loc, "type requires declaration of default precision qualifier", TType::getBasicString(publicType.basicType), "");
|
||
publicType.qualifier.precision = EpqMedium;
|
||
defaultPrecision[publicType.basicType] = EpqMedium;
|
||
}
|
||
} else if (publicType.qualifier.precision != EpqNone)
|
||
error(loc, "type cannot have precision qualifier", TType::getBasicString(publicType.basicType), "");
|
||
}
|
||
|
||
void TParseContext::parameterSamplerCheck(TSourceLoc loc, TStorageQualifier qualifier, const TType& type)
|
||
{
|
||
if ((qualifier == EvqOut || qualifier == EvqInOut) && type.getBasicType() != EbtStruct && type.getBasicType() == EbtSampler)
|
||
error(loc, "samplers cannot be output parameters", type.getBasicTypeString().c_str(), "");
|
||
}
|
||
|
||
bool TParseContext::containsSampler(const TType& type)
|
||
{
|
||
if (type.getBasicType() == EbtSampler)
|
||
return true;
|
||
|
||
if (type.getBasicType() == EbtStruct) {
|
||
TTypeList& structure = *type.getStruct();
|
||
for (unsigned int i = 0; i < structure.size(); ++i) {
|
||
if (containsSampler(*structure[i].type))
|
||
return true;
|
||
}
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
//
|
||
// Do size checking for an array type's size.
|
||
//
|
||
void TParseContext::arraySizeCheck(TSourceLoc loc, TIntermTyped* expr, int& size)
|
||
{
|
||
TIntermConstantUnion* constant = expr->getAsConstantUnion();
|
||
if (constant == 0 || (constant->getBasicType() != EbtInt && constant->getBasicType() != EbtUint)) {
|
||
error(loc, "array size must be a constant integer expression", "", "");
|
||
size = 1;
|
||
|
||
return;
|
||
}
|
||
|
||
size = constant->getConstArray()[0].getIConst();
|
||
|
||
if (size <= 0) {
|
||
error(loc, "array size must be a positive integer", "", "");
|
||
size = 1;
|
||
|
||
return;
|
||
}
|
||
}
|
||
|
||
//
|
||
// See if this qualifier can be an array.
|
||
//
|
||
// Returns true if there is an error.
|
||
//
|
||
bool TParseContext::arrayQualifierError(TSourceLoc loc, const TQualifier& qualifier)
|
||
{
|
||
if (qualifier.storage == EvqConst) {
|
||
profileRequires(loc, ENoProfile, 120, GL_3DL_array_objects, "const array");
|
||
profileRequires(loc, EEsProfile, 300, 0, "const array");
|
||
}
|
||
|
||
if (qualifier.storage == EvqVaryingIn && language == EShLangVertex) {
|
||
requireProfile(loc, ~EEsProfile, "vertex input arrays");
|
||
profileRequires(loc, ENoProfile, 150, 0, "vertex input arrays");
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
//
|
||
// Require array to have size
|
||
//
|
||
void TParseContext::arraySizeRequiredCheck(TSourceLoc loc, int size)
|
||
{
|
||
if (size == 0) {
|
||
error(loc, "array size required", "", "");
|
||
size = 1;
|
||
}
|
||
}
|
||
|
||
void TParseContext::arrayDimError(TSourceLoc loc)
|
||
{
|
||
requireProfile(loc, ECoreProfile | ECompatibilityProfile, "arrays of arrays");
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 430, 0, "arrays of arrays");
|
||
}
|
||
|
||
void TParseContext::arrayDimCheck(TSourceLoc loc, TArraySizes* sizes1, TArraySizes* sizes2)
|
||
{
|
||
if ((sizes1 && sizes2) ||
|
||
(sizes1 && sizes1->isArrayOfArrays()) ||
|
||
(sizes2 && sizes2->isArrayOfArrays()))
|
||
arrayDimError(loc);
|
||
}
|
||
|
||
void TParseContext::arrayDimCheck(TSourceLoc loc, const TType* type, TArraySizes* sizes2)
|
||
{
|
||
if ((type && type->isArray() && sizes2) ||
|
||
(sizes2 && sizes2->isArrayOfArrays()))
|
||
arrayDimError(loc);
|
||
}
|
||
|
||
//
|
||
// Do all the semantic checking for declaring an array, with and
|
||
// without a size, and make the right changes to the symbol table.
|
||
//
|
||
// size == 0 means no specified size.
|
||
//
|
||
void TParseContext::declareArray(TSourceLoc loc, TString& identifier, const TType& type, TSymbol*& symbol, bool& newDeclaration)
|
||
{
|
||
if (! symbol) {
|
||
bool currentScope;
|
||
symbol = symbolTable.find(identifier, 0, ¤tScope);
|
||
if (symbol == 0 || ! currentScope) {
|
||
//
|
||
// Successfully process a new definition.
|
||
// (Redeclarations have to take place at the same scope; otherwise they are hiding declarations)
|
||
//
|
||
symbol = new TVariable(&identifier, type);
|
||
symbolTable.insert(*symbol);
|
||
newDeclaration = true;
|
||
|
||
// Handle user geometry shader input arrays: see inputArrayNodeResizeList comment in ParseHelper.h
|
||
if (language == EShLangGeometry && type.getQualifier().storage == EvqVaryingIn && ! symbolTable.atBuiltInLevel()) {
|
||
inputArraySymbolResizeList.push_back(symbol);
|
||
checkInputArrayConsistency(loc, true);
|
||
}
|
||
|
||
return;
|
||
}
|
||
if (symbol->getAsAnonMember()) {
|
||
error(loc, "cannot redeclare a user-block member array", identifier.c_str(), "");
|
||
return;
|
||
}
|
||
}
|
||
|
||
//
|
||
// Process a redeclaration.
|
||
//
|
||
|
||
if (! symbol) {
|
||
error(loc, "array variable name expected", identifier.c_str(), "");
|
||
return;
|
||
}
|
||
|
||
TType& newType = symbol->getWritableType();
|
||
|
||
if (! newType.isArray()) {
|
||
error(loc, "redeclaring non-array as array", identifier.c_str(), "");
|
||
return;
|
||
}
|
||
if (newType.getArraySize() > 0) {
|
||
// be more leniant for input arrays to geometry shaders, where the redeclaration is the same size
|
||
if (! (language == EShLangGeometry && type.getQualifier().storage == EvqVaryingIn && newType.getArraySize() == type.getArraySize()))
|
||
error(loc, "redeclaration of array with size", identifier.c_str(), "");
|
||
return;
|
||
}
|
||
|
||
if (! newType.sameElementType(type)) {
|
||
error(loc, "redeclaration of array with a different type", identifier.c_str(), "");
|
||
return;
|
||
}
|
||
|
||
arrayLimitCheck(loc, identifier, type.getArraySize());
|
||
|
||
newType.shareArraySizes(type);
|
||
|
||
if (language == EShLangGeometry && type.getQualifier().storage == EvqVaryingIn)
|
||
checkInputArrayConsistency(loc);
|
||
}
|
||
|
||
void TParseContext::updateMaxArraySize(TSourceLoc loc, TIntermNode *node, int index)
|
||
{
|
||
// maybe there is nothing to do...
|
||
TIntermTyped* typedNode = node->getAsTyped();
|
||
if (typedNode->getType().getMaxArraySize() > index)
|
||
return;
|
||
|
||
// something to do...
|
||
|
||
// TODO: 1.50 linker: unsized block member array: 'node' could be an expression for a dereference
|
||
TIntermSymbol* symbolNode = node->getAsSymbolNode();
|
||
if (! symbolNode)
|
||
return;
|
||
|
||
TSymbol* symbol = symbolTable.find(symbolNode->getName());
|
||
assert(symbol);
|
||
if (symbol == 0)
|
||
return;
|
||
|
||
if (symbol->getAsFunction()) {
|
||
error(loc, "array variable name expected", symbolNode->getName().c_str(), "");
|
||
return;
|
||
}
|
||
|
||
// For read-only built-ins, add a new variable for holding the maximum array size of an implicitly-sized shared array.
|
||
// TODO: desktop linker: unsized arrays: is this new array type shared with the node?
|
||
if (symbol->isReadOnly()) {
|
||
symbol = symbolTable.copyUp(symbol);
|
||
|
||
// Handle geometry shader input arrays: see inputArrayNodeResizeList comment in ParseHelper.h
|
||
if (language == EShLangGeometry && symbol->getType().getQualifier().storage == EvqVaryingIn)
|
||
inputArraySymbolResizeList.push_back(symbol);
|
||
|
||
// Save it in the AST for linker use.
|
||
intermediate.addSymbolLinkageNode(linkage, *symbol);
|
||
}
|
||
|
||
symbol->getWritableType().setMaxArraySize(index + 1);
|
||
}
|
||
|
||
//
|
||
// Enforce non-initializer type/qualifier rules.
|
||
//
|
||
void TParseContext::nonInitConstCheck(TSourceLoc loc, TString& identifier, TType& type)
|
||
{
|
||
//
|
||
// Make the qualifier make sense, given that there is an initializer.
|
||
//
|
||
if (type.getQualifier().storage == EvqConst ||
|
||
type.getQualifier().storage == EvqConstReadOnly) {
|
||
type.getQualifier().storage = EvqTemporary;
|
||
error(loc, "variables with qualifier 'const' must be initialized", identifier.c_str(), "");
|
||
}
|
||
}
|
||
|
||
//
|
||
// See if the identifier is a built-in symbol that can be redeclared, and if so,
|
||
// copy the symbol table's read-only built-in variable to the current
|
||
// global level, where it can be modified based on the passed in type.
|
||
//
|
||
// Returns 0 if no redeclaration took place; meaning a normal declaration still
|
||
// needs to occur for it, not necessarily an error.
|
||
//
|
||
// Returns a redeclared and type-modified variable if a redeclarated occurred.
|
||
//
|
||
TSymbol* TParseContext::redeclareBuiltinVariable(TSourceLoc loc, const TString& identifier, const TQualifier& qualifier, const TShaderQualifiers& publicType, bool& newDeclaration)
|
||
{
|
||
if (profile == EEsProfile || ! builtInName(identifier) || symbolTable.atBuiltInLevel() || ! symbolTable.atGlobalLevel())
|
||
return 0;
|
||
|
||
// Potentially redeclaring a built-in variable...
|
||
|
||
if ((identifier == "gl_FragDepth" && version >= 420) ||
|
||
(identifier == "gl_FragCoord" && version >= 150) ||
|
||
(identifier == "gl_ClipDistance" && version >= 130) ||
|
||
(identifier == "gl_FrontColor" && version >= 130) ||
|
||
(identifier == "gl_BackColor" && version >= 130) ||
|
||
(identifier == "gl_FrontSecondaryColor" && version >= 130) ||
|
||
(identifier == "gl_BackSecondaryColor" && version >= 130) ||
|
||
(identifier == "gl_SecondaryColor" && version >= 130) ||
|
||
(identifier == "gl_Color" && version >= 130 && language == EShLangFragment) ||
|
||
identifier == "gl_TexCoord") {
|
||
|
||
// Find the existing symbol, if any.
|
||
bool builtIn;
|
||
TSymbol* symbol = symbolTable.find(identifier, &builtIn);
|
||
|
||
// If the symbol was not found, this must be a version/profile/stage
|
||
// that doesn't have it.
|
||
if (! symbol)
|
||
return 0;
|
||
|
||
// If it wasn't at a built-in level, then it's already been redeclared;
|
||
// that is, this is a redeclaration of a redeclaration, reuse that initial
|
||
// redeclaration. Otherwise, make the new one.
|
||
if (builtIn) {
|
||
// Copy the symbol up to make a writable version
|
||
newDeclaration = true;
|
||
symbol = symbolTable.copyUp(symbol);
|
||
|
||
// Handle geometry shader input arrays: see inputArrayNodeResizeList comment in ParseHelper.h
|
||
if (language == EShLangGeometry && symbol->getType().getQualifier().storage == EvqVaryingIn && symbol->getType().isArray())
|
||
inputArraySymbolResizeList.push_back(symbol);
|
||
|
||
// Save it in the AST for linker use.
|
||
intermediate.addSymbolLinkageNode(linkage, *symbol);
|
||
}
|
||
|
||
// Now, modify the type of the copy, as per the type of the current redeclaration.
|
||
|
||
TQualifier& symbolQualifier = symbol->getWritableType().getQualifier();
|
||
if (identifier == "gl_FrontColor" ||
|
||
identifier == "gl_BackColor" ||
|
||
identifier == "gl_FrontSecondaryColor" ||
|
||
identifier == "gl_BackSecondaryColor" ||
|
||
identifier == "gl_SecondaryColor" ||
|
||
identifier == "gl_Color") {
|
||
symbolQualifier.flat = qualifier.flat;
|
||
symbolQualifier.smooth = qualifier.smooth;
|
||
symbolQualifier.nopersp = qualifier.nopersp;
|
||
if (qualifier.hasLayout())
|
||
error(loc, "cannot apply layout qualifier to", "redeclaration", symbol->getName().c_str());
|
||
if (qualifier.isMemory() || qualifier.isAuxiliary() || symbol->getType().getQualifier().storage != qualifier.storage)
|
||
error(loc, "cannot change storage, memory, or auxiliary qualification of", "redeclaration", symbol->getName().c_str());
|
||
} else if (identifier == "gl_TexCoord" ||
|
||
identifier == "gl_ClipDistance") {
|
||
if (qualifier.hasLayout() || qualifier.isMemory() || qualifier.isAuxiliary() ||
|
||
qualifier.nopersp != symbolQualifier.nopersp || qualifier.flat != symbolQualifier.flat ||
|
||
symbolQualifier.storage != qualifier.storage)
|
||
error(loc, "cannot change qualification of", "redeclaration", symbol->getName().c_str());
|
||
} else if (identifier == "gl_FragCoord") {
|
||
if (intermediate.inIoAccessed("gl_FragCoord"))
|
||
error(loc, "cannot redeclare after use", "gl_FragCoord", "");
|
||
if (qualifier.nopersp != symbolQualifier.nopersp || qualifier.flat != symbolQualifier.flat ||
|
||
qualifier.isMemory() || qualifier.isAuxiliary())
|
||
error(loc, "can only change layout qualification of", "redeclaration", symbol->getName().c_str());
|
||
if (identifier == "gl_FragCoord" && qualifier.storage != EvqVaryingIn)
|
||
error(loc, "cannot change input storage qualification of", "redeclaration", symbol->getName().c_str());
|
||
if (! builtIn && (publicType.pixelCenterInteger != intermediate.getPixelCenterInteger() ||
|
||
publicType.originUpperLeft != intermediate.getOriginUpperLeft()))
|
||
error(loc, "cannot redeclare with different qualification:", "redeclaration", symbol->getName().c_str());
|
||
if (publicType.pixelCenterInteger)
|
||
intermediate.setPixelCenterInteger();
|
||
if (publicType.originUpperLeft)
|
||
intermediate.setOriginUpperLeft();
|
||
} else if (identifier == "gl_FragDepth") {
|
||
if (qualifier.nopersp != symbolQualifier.nopersp || qualifier.flat != symbolQualifier.flat ||
|
||
qualifier.isMemory() || qualifier.isAuxiliary())
|
||
error(loc, "can only change layout qualification of", "redeclaration", symbol->getName().c_str());
|
||
if (qualifier.storage != EvqVaryingOut)
|
||
error(loc, "cannot change output storage qualification of", "redeclaration", symbol->getName().c_str());
|
||
// TODO 4.2: gl_FragDepth redeclaration
|
||
}
|
||
// TODO: semantics quality: separate smooth from nothing declared, then use IsInterpolation for several tests above
|
||
|
||
return symbol;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
//
|
||
// Either redeclare the requested block, or give an error message why it can't be done.
|
||
//
|
||
void TParseContext::redeclareBuiltinBlock(TSourceLoc loc, TTypeList& newTypeList, const TString& blockName, const TString* instanceName, TArraySizes* arraySizes)
|
||
{
|
||
const char* feature = "built-in block redeclaration";
|
||
requireProfile(loc, ECoreProfile | ECompatibilityProfile, feature);
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 410, GL_ARB_separate_shader_objects, feature);
|
||
|
||
if (blockName != "gl_PerVertex" && blockName != "gl_PerFragment") {
|
||
error(loc, "cannot redeclare block: ", "block declaration", blockName.c_str());
|
||
return;
|
||
}
|
||
|
||
// Redeclaring a built-in block...
|
||
|
||
if (instanceName && ! builtInName(*instanceName)) {
|
||
error(loc, "cannot redeclare a built-in block with a user name", instanceName->c_str(), "");
|
||
return;
|
||
}
|
||
|
||
// Blocks with instance names are easy to find, lookup the instance name,
|
||
// Anonymous blocks need to be found via a member.
|
||
bool builtIn;
|
||
TSymbol* block;
|
||
if (instanceName)
|
||
block = symbolTable.find(*instanceName, &builtIn);
|
||
else
|
||
block = symbolTable.find(newTypeList.front().type->getFieldName(), &builtIn);
|
||
|
||
// If the block was not found, this must be a version/profile/stage
|
||
// that doesn't have it, or the instance name is wrong.
|
||
const char* errorName = instanceName ? instanceName->c_str() : newTypeList.front().type->getFieldName().c_str();
|
||
if (! block) {
|
||
error(loc, "no declaration found for redeclaration", errorName, "");
|
||
return;
|
||
}
|
||
// Built-in blocks cannot be redeclared more than once, which if happened,
|
||
// we'd be finding the already redeclared one here, rather than the built in.
|
||
if (! builtIn) {
|
||
error(loc, "can only redeclare a built-in block once, and before any use", blockName.c_str(), "");
|
||
return;
|
||
}
|
||
|
||
// Copy the block to make a writable version, to insert into the block table after editing.
|
||
block = symbolTable.copyUpDeferredInsert(block);
|
||
|
||
if (block->getType().getBasicType() != EbtBlock) {
|
||
error(loc, "cannot redeclare a non block as a block", errorName, "");
|
||
return;
|
||
}
|
||
|
||
// Handle geometry shader input arrays: see inputArrayNodeResizeList comment in ParseHelper.h
|
||
if (language == EShLangGeometry && block->getType().isArray() && block->getType().getQualifier().storage == EvqVaryingIn)
|
||
inputArraySymbolResizeList.push_back(block);
|
||
|
||
// Edit and error check the container against the redeclaration
|
||
// - remove unused members
|
||
// - ensure remaining qualifiers/types match
|
||
TType& type = block->getWritableType();
|
||
TTypeList::iterator member = type.getStruct()->begin();
|
||
size_t numOriginalMembersFound = 0;
|
||
while (member != type.getStruct()->end()) {
|
||
// look for match
|
||
bool found = false;
|
||
TTypeList::iterator newMember;
|
||
TSourceLoc memberLoc;
|
||
for (newMember = newTypeList.begin(); newMember != newTypeList.end(); ++newMember) {
|
||
if (member->type->getFieldName() == newMember->type->getFieldName()) {
|
||
found = true;
|
||
memberLoc = newMember->loc;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (found) {
|
||
++numOriginalMembersFound;
|
||
// - ensure match between redeclared members' types
|
||
// - check for things that can't be changed
|
||
// - update things that can be changed
|
||
TType& oldType = *member->type;
|
||
const TType& newType = *newMember->type;
|
||
if (! newType.sameElementType(oldType))
|
||
error(memberLoc, "cannot redeclare block member with a different type", member->type->getFieldName().c_str(), "");
|
||
if (oldType.isArray() != newType.isArray())
|
||
error(memberLoc, "cannot change arrayness of redeclared block member", member->type->getFieldName().c_str(), "");
|
||
else if (! oldType.sameArrayness(newType) && oldType.getArraySize() > 0)
|
||
error(memberLoc, "cannot change array size of redeclared block member", member->type->getFieldName().c_str(), "");
|
||
else if (newType.isArray())
|
||
arrayLimitCheck(loc, member->type->getFieldName(), newType.getArraySize());
|
||
if (newType.getQualifier().isMemory())
|
||
error(memberLoc, "cannot add memory qualifier to redeclared block member", member->type->getFieldName().c_str(), "");
|
||
if (newType.getQualifier().hasLayout())
|
||
error(memberLoc, "cannot add layout to redeclared block member", member->type->getFieldName().c_str(), "");
|
||
if (newType.getQualifier().patch)
|
||
error(memberLoc, "cannot add patch to redeclared block member", member->type->getFieldName().c_str(), "");
|
||
oldType.getQualifier().centroid = newType.getQualifier().centroid;
|
||
oldType.getQualifier().sample = newType.getQualifier().sample;
|
||
oldType.getQualifier().invariant = newType.getQualifier().invariant;
|
||
oldType.getQualifier().smooth = newType.getQualifier().smooth;
|
||
oldType.getQualifier().flat = newType.getQualifier().flat;
|
||
oldType.getQualifier().nopersp = newType.getQualifier().nopersp;
|
||
|
||
// go to next member
|
||
++member;
|
||
} else {
|
||
// Use EbtVoid to tag missing members of anonymous blocks that have been redeclared,
|
||
// to hide the original (shared) declaration.
|
||
// (Instance-named blocks can just have the member removed.)
|
||
if (instanceName)
|
||
member = type.getStruct()->erase(member);
|
||
else {
|
||
member->type->setElementType(EbtVoid, 1, 0, 0, 0);
|
||
++member;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (numOriginalMembersFound < newTypeList.size())
|
||
error(loc, "block redeclaration has extra members", blockName.c_str(), "");
|
||
if (type.isArray() != (arraySizes != 0))
|
||
error(loc, "cannot change arrayness of redeclared block", blockName.c_str(), "");
|
||
else if (type.isArray() && type.getArraySize() > 0 && type.getArraySize() != arraySizes->getSize())
|
||
error(loc, "cannot change array size of redeclared block", blockName.c_str(), "");
|
||
|
||
symbolTable.insert(*block);
|
||
|
||
// Check for general layout qualifier errors
|
||
layoutTypeCheck(loc, *block);
|
||
|
||
// Save it in the AST for linker use.
|
||
intermediate.addSymbolLinkageNode(linkage, *block);
|
||
}
|
||
|
||
void TParseContext::paramCheckFix(TSourceLoc loc, const TStorageQualifier& qualifier, TType& type)
|
||
{
|
||
switch (qualifier) {
|
||
case EvqConst:
|
||
case EvqConstReadOnly:
|
||
type.getQualifier().storage = EvqConstReadOnly;
|
||
break;
|
||
case EvqIn:
|
||
case EvqOut:
|
||
case EvqInOut:
|
||
type.getQualifier().storage = qualifier;
|
||
break;
|
||
case EvqTemporary:
|
||
type.getQualifier().storage = EvqIn;
|
||
break;
|
||
default:
|
||
type.getQualifier().storage = EvqIn;
|
||
error(loc, "storage qualifier not allowed on function parameter", GetStorageQualifierString(qualifier), "");
|
||
break;
|
||
}
|
||
}
|
||
|
||
void TParseContext::paramCheckFix(TSourceLoc loc, const TQualifier& qualifier, TType& type)
|
||
{
|
||
if (qualifier.isAuxiliary() ||
|
||
qualifier.isInterpolation())
|
||
error(loc, "cannot use auxiliary or interpolation qualifiers on a function parameter", "", "");
|
||
if (qualifier.hasLayout())
|
||
error(loc, "cannot use layout qualifiers on a function parameter", "", "");
|
||
if (qualifier.invariant)
|
||
error(loc, "cannot use invariant qualifier on a function parameter", "", "");
|
||
|
||
paramCheckFix(loc, qualifier.storage, type);
|
||
}
|
||
|
||
void TParseContext::nestedBlockCheck(TSourceLoc loc)
|
||
{
|
||
if (structNestingLevel > 0)
|
||
error(loc, "cannot nest a block definition inside a structure or block", "", "");
|
||
++structNestingLevel;
|
||
}
|
||
|
||
void TParseContext::nestedStructCheck(TSourceLoc loc)
|
||
{
|
||
if (structNestingLevel > 0)
|
||
error(loc, "cannot nest a structure definition inside a structure or block", "", "");
|
||
++structNestingLevel;
|
||
}
|
||
|
||
void TParseContext::arrayObjectCheck(TSourceLoc loc, const TType& type, const char* op)
|
||
{
|
||
// Some versions don't allow comparing arrays or structures containing arrays
|
||
if (type.containsArray()) {
|
||
profileRequires(loc, ENoProfile, 120, GL_3DL_array_objects, op);
|
||
profileRequires(loc, EEsProfile, 300, 0, op);
|
||
}
|
||
}
|
||
|
||
void TParseContext::opaqueCheck(TSourceLoc loc, const TType& type, const char* op)
|
||
{
|
||
if (containsSampler(type))
|
||
error(loc, "can't use with samplers or structs containing samplers", op, "");
|
||
}
|
||
|
||
void TParseContext::structTypeCheck(TSourceLoc loc, TPublicType& publicType)
|
||
{
|
||
TTypeList& typeList = *publicType.userDef->getStruct();
|
||
|
||
// fix and check for member storage qualifiers and types that don't belong within a structure
|
||
for (unsigned int member = 0; member < typeList.size(); ++member) {
|
||
TQualifier& memberQualifier = typeList[member].type->getQualifier();
|
||
TSourceLoc memberLoc = typeList[member].loc;
|
||
if (memberQualifier.isAuxiliary() ||
|
||
memberQualifier.isInterpolation() ||
|
||
(memberQualifier.storage != EvqTemporary && memberQualifier.storage != EvqGlobal))
|
||
error(memberLoc, "cannot use storage or interpolation qualifiers on structure members", typeList[member].type->getFieldName().c_str(), "");
|
||
if (memberQualifier.isMemory())
|
||
error(memberLoc, "cannot use memory qualifiers on structure members", typeList[member].type->getFieldName().c_str(), "");
|
||
if (memberQualifier.hasLayout())
|
||
error(memberLoc, "cannot use layout qualifiers on structure members", typeList[member].type->getFieldName().c_str(), "");
|
||
if (memberQualifier.invariant)
|
||
error(memberLoc, "cannot use invariant qualifier on structure members", typeList[member].type->getFieldName().c_str(), "");
|
||
}
|
||
}
|
||
|
||
//
|
||
// See if this loop satisfies the limitations for ES 2.0 (version 100) for loops in Appendex A:
|
||
//
|
||
// "The loop index has type int or float.
|
||
//
|
||
// "The for statement has the form:
|
||
// for ( init-declaration ; condition ; expression )
|
||
// init-declaration has the form: type-specifier identifier = constant-expression
|
||
// condition has the form: loop-index relational_operator constant-expression
|
||
// where relational_operator is one of: > >= < <= == or !=
|
||
// expression [sic] has one of the following forms:
|
||
// loop-index++
|
||
// loop-index--
|
||
// loop-index += constant-expression
|
||
// loop-index -= constant-expression
|
||
//
|
||
// The body is handled in an AST traversal.
|
||
//
|
||
void TParseContext::inductiveLoopCheck(TSourceLoc loc, TIntermNode* init, TIntermLoop* loop)
|
||
{
|
||
// loop index init must exist and be a declaration, which shows up in the AST as an aggregate of size 1 of the declaration
|
||
bool badInit = false;
|
||
if (! init || ! init->getAsAggregate() || ! init->getAsAggregate()->getSequence().size() == 1)
|
||
badInit = true;
|
||
TIntermBinary* binaryInit;
|
||
if (! badInit) {
|
||
// get the declaration assignment
|
||
binaryInit = init->getAsAggregate()->getSequence()[0]->getAsBinaryNode();
|
||
if (! binaryInit)
|
||
badInit = true;
|
||
}
|
||
if (badInit) {
|
||
error(loc, "inductive-loop init-declaration requires the form \"type-specifier loop-index = constant-expression\"", "limitations", "");
|
||
return;
|
||
}
|
||
|
||
// loop index must be type int or float
|
||
if (! binaryInit->getType().isScalar() || (binaryInit->getBasicType() != EbtInt && binaryInit->getBasicType() != EbtFloat)) {
|
||
error(loc, "inductive loop requires a scalar 'int' or 'float' loop index", "limitations", "");
|
||
return;
|
||
}
|
||
|
||
// init is the form "loop-index = constant"
|
||
if (binaryInit->getOp() != EOpAssign || ! binaryInit->getLeft()->getAsSymbolNode() || ! binaryInit->getRight()->getAsConstantUnion()) {
|
||
error(loc, "inductive-loop init-declaration requires the form \"type-specifier loop-index = constant-expression\"", "limitations", "");
|
||
return;
|
||
}
|
||
|
||
// get the unique id of the loop index
|
||
int loopIndex = binaryInit->getLeft()->getAsSymbolNode()->getId();
|
||
inductiveLoopIds.insert(loopIndex);
|
||
|
||
// condition's form must be "loop-index relational-operator constant-expression"
|
||
bool badCond = ! loop->getTest();
|
||
if (! badCond) {
|
||
TIntermBinary* binaryCond = loop->getTest()->getAsBinaryNode();
|
||
badCond = ! binaryCond;
|
||
if (! badCond) {
|
||
switch (binaryCond->getOp()) {
|
||
case EOpGreaterThan:
|
||
case EOpGreaterThanEqual:
|
||
case EOpLessThan:
|
||
case EOpLessThanEqual:
|
||
case EOpEqual:
|
||
case EOpNotEqual:
|
||
break;
|
||
default:
|
||
badCond = true;
|
||
}
|
||
}
|
||
if (binaryCond && (! binaryCond->getLeft()->getAsSymbolNode() ||
|
||
binaryCond->getLeft()->getAsSymbolNode()->getId() != loopIndex ||
|
||
! binaryCond->getRight()->getAsConstantUnion()))
|
||
badCond = true;
|
||
}
|
||
if (badCond) {
|
||
error(loc, "inductive-loop condition requires the form \"loop-index <comparison-op> constant-expression\"", "limitations", "");
|
||
return;
|
||
}
|
||
|
||
// loop-index++
|
||
// loop-index--
|
||
// loop-index += constant-expression
|
||
// loop-index -= constant-expression
|
||
bool badTerminal = ! loop->getTerminal();
|
||
if (! badTerminal) {
|
||
TIntermUnary* unaryTerminal = loop->getTerminal()->getAsUnaryNode();
|
||
TIntermBinary* binaryTerminal = loop->getTerminal()->getAsBinaryNode();
|
||
if (unaryTerminal || binaryTerminal) {
|
||
switch(loop->getTerminal()->getAsOperator()->getOp()) {
|
||
case EOpPostDecrement:
|
||
case EOpPostIncrement:
|
||
case EOpAddAssign:
|
||
case EOpSubAssign:
|
||
break;
|
||
default:
|
||
badTerminal = true;
|
||
}
|
||
} else
|
||
badTerminal = true;
|
||
if (binaryTerminal && (! binaryTerminal->getLeft()->getAsSymbolNode() ||
|
||
binaryTerminal->getLeft()->getAsSymbolNode()->getId() != loopIndex ||
|
||
! binaryTerminal->getRight()->getAsConstantUnion()))
|
||
badTerminal = true;
|
||
if (unaryTerminal && (! unaryTerminal->getOperand()->getAsSymbolNode() ||
|
||
unaryTerminal->getOperand()->getAsSymbolNode()->getId() != loopIndex))
|
||
badTerminal = true;
|
||
}
|
||
if (badTerminal) {
|
||
error(loc, "inductive-loop termination requires the form \"loop-index++, loop-index--, loop-index += constant-expression, or loop-index -= constant-expression\"", "limitations", "");
|
||
return;
|
||
}
|
||
|
||
// the body
|
||
inductiveLoopBodyCheck(loop->getBody(), loopIndex, symbolTable);
|
||
}
|
||
|
||
// Do limit checks against for all built-in arrays.
|
||
void TParseContext::arrayLimitCheck(TSourceLoc loc, const TString& identifier, int size)
|
||
{
|
||
if (identifier.compare("gl_TexCoord") == 0)
|
||
limitCheck(loc, size, "gl_MaxTextureCoords", "gl_TexCoord array size");
|
||
else if (identifier.compare("gl_ClipDistance") == 0)
|
||
limitCheck(loc, size, "gl_MaxClipDistances", "gl_ClipDistance array size");
|
||
}
|
||
|
||
// See if the provide value is less than the symbol indicated by limit,
|
||
// which should be a constant in the symbol table.
|
||
void TParseContext::limitCheck(TSourceLoc loc, int value, const char* limit, const char* feature)
|
||
{
|
||
TSymbol* symbol = symbolTable.find(limit);
|
||
assert(symbol->getAsVariable());
|
||
const TConstUnionArray& constArray = symbol->getAsVariable()->getConstArray();
|
||
assert(! constArray.empty());
|
||
if (value >= constArray[0].getIConst())
|
||
error(loc, "must be less than", feature, "%s (%d)", limit, constArray[0].getIConst());
|
||
}
|
||
|
||
//
|
||
// Do any additional error checking, etc., once we know the parsing is done.
|
||
//
|
||
void TParseContext::finalErrorCheck()
|
||
{
|
||
// Check on array indexes for ES 2.0 (version 100) limitations.
|
||
for (size_t i = 0; i < needsIndexLimitationChecking.size(); ++i)
|
||
constantIndexExpressionCheck(needsIndexLimitationChecking[i]);
|
||
}
|
||
|
||
//
|
||
// Layout qualifier stuff.
|
||
//
|
||
|
||
// Put the id's layout qualification into the public type. This is before we know any
|
||
// type information for error checking.
|
||
void TParseContext::setLayoutQualifier(TSourceLoc loc, TPublicType& publicType, TString& id)
|
||
{
|
||
std::transform(id.begin(), id.end(), id.begin(), ::tolower);
|
||
|
||
if (id == TQualifier::getLayoutMatrixString(ElmColumnMajor)) {
|
||
publicType.qualifier.layoutMatrix = ElmColumnMajor;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getLayoutMatrixString(ElmRowMajor)) {
|
||
publicType.qualifier.layoutMatrix = ElmRowMajor;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getLayoutPackingString(ElpPacked)) {
|
||
publicType.qualifier.layoutPacking = ElpPacked;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getLayoutPackingString(ElpShared)) {
|
||
publicType.qualifier.layoutPacking = ElpShared;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getLayoutPackingString(ElpStd140)) {
|
||
publicType.qualifier.layoutPacking = ElpStd140;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getLayoutPackingString(ElpStd430)) {
|
||
requireProfile(loc, ECoreProfile | ECompatibilityProfile, "std430");
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 430, 0, "std430");
|
||
publicType.qualifier.layoutPacking = ElpStd430;
|
||
return;
|
||
}
|
||
if (language == EShLangGeometry || language == EShLangTessEvaluation) {
|
||
if (id == TQualifier::getGeometryString(ElgTriangles)) {
|
||
publicType.shaderQualifiers.geometry = ElgTriangles;
|
||
return;
|
||
}
|
||
if (language == EShLangGeometry) {
|
||
if (id == TQualifier::getGeometryString(ElgPoints)) {
|
||
publicType.shaderQualifiers.geometry = ElgPoints;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getGeometryString(ElgLineStrip)) {
|
||
publicType.shaderQualifiers.geometry = ElgLineStrip;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getGeometryString(ElgLines)) {
|
||
publicType.shaderQualifiers.geometry = ElgLines;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getGeometryString(ElgLinesAdjacency)) {
|
||
publicType.shaderQualifiers.geometry = ElgLinesAdjacency;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getGeometryString(ElgTrianglesAdjacency)) {
|
||
publicType.shaderQualifiers.geometry = ElgTrianglesAdjacency;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getGeometryString(ElgTriangleStrip)) {
|
||
publicType.shaderQualifiers.geometry = ElgTriangleStrip;
|
||
return;
|
||
}
|
||
} else {
|
||
// tessellation evaluation
|
||
// TODO: tessellation: semantic check these are on the in qualifier only
|
||
|
||
// input primitive
|
||
if (id == TQualifier::getGeometryString(ElgTriangles)) {
|
||
publicType.shaderQualifiers.geometry = ElgTriangles;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getGeometryString(ElgQuads)) {
|
||
publicType.shaderQualifiers.geometry = ElgQuads;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getGeometryString(ElgIsolines)) {
|
||
publicType.shaderQualifiers.geometry = ElgIsolines;
|
||
return;
|
||
}
|
||
|
||
// vertex spacing
|
||
if (id == TQualifier::getVertexSpacingString(EvsEqual)) {
|
||
publicType.shaderQualifiers.spacing = EvsEqual;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getVertexSpacingString(EvsFractionalEven)) {
|
||
publicType.shaderQualifiers.spacing = EvsFractionalEven;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getVertexSpacingString(EvsFractionalOdd)) {
|
||
publicType.shaderQualifiers.spacing = EvsFractionalOdd;
|
||
return;
|
||
}
|
||
|
||
// triangle order
|
||
if (id == TQualifier::getVertexOrderString(EvoCw)) {
|
||
publicType.shaderQualifiers.order = EvoCw;
|
||
return;
|
||
}
|
||
if (id == TQualifier::getVertexOrderString(EvoCcw)) {
|
||
publicType.shaderQualifiers.order = EvoCcw;
|
||
return;
|
||
}
|
||
|
||
// point mode
|
||
if (id == "point_mode") {
|
||
publicType.shaderQualifiers.pointMode = true;
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
if (language == EShLangFragment) {
|
||
if (id == "origin_upper_left") {
|
||
requireProfile(loc, ECoreProfile | ECompatibilityProfile, "origin_upper_left");
|
||
publicType.shaderQualifiers.originUpperLeft = true;
|
||
return;
|
||
}
|
||
if (id == "pixel_center_integer") {
|
||
requireProfile(loc, ECoreProfile | ECompatibilityProfile, "pixel_center_integer");
|
||
publicType.shaderQualifiers.pixelCenterInteger = true;
|
||
return;
|
||
}
|
||
}
|
||
error(loc, "unrecognized layout identifier, or qualifier requires assignemnt (e.g., binding = 4)", id.c_str(), "");
|
||
}
|
||
|
||
// Put the id's layout qualifier value into the public type. This is before we know any
|
||
// type information for error checking.
|
||
void TParseContext::setLayoutQualifier(TSourceLoc loc, TPublicType& publicType, TString& id, int value)
|
||
{
|
||
if (value < 0) {
|
||
error(loc, "cannot be negative", "layout qualifier value", "");
|
||
return;
|
||
// TODO: 4.4: test the above, once expressions are allowed; until then, can't even express a negative location
|
||
}
|
||
|
||
std::transform(id.begin(), id.end(), id.begin(), ::tolower);
|
||
if (id == "location") {
|
||
requireProfile(loc, EEsProfile | ECoreProfile | ECompatibilityProfile, "location");
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 330, 0, "location");
|
||
if ((unsigned int)value >= TQualifier::layoutLocationEnd)
|
||
error(loc, "location is too large", id.c_str(), "");
|
||
else
|
||
publicType.qualifier.layoutSlotLocation = value;
|
||
return;
|
||
}
|
||
if (id == "binding") {
|
||
requireProfile(loc, ECoreProfile | ECompatibilityProfile, "binding");
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 420, GL_ARB_shading_language_420pack, "binding");
|
||
if ((unsigned int)value >= TQualifier::layoutBindingEnd)
|
||
error(loc, "binding is too large", id.c_str(), "");
|
||
else
|
||
publicType.qualifier.layoutBinding = value;
|
||
return;
|
||
}
|
||
switch (language) {
|
||
case EShLangVertex:
|
||
break;
|
||
|
||
case EShLangTessControl:
|
||
if (id == "vertices") {
|
||
// TODO: tessellation: implement gl_out[] array sizing based on this
|
||
// TODO: tessellation: semantic check this is on the out qualifier only
|
||
publicType.shaderQualifiers.vertices = value;
|
||
return;
|
||
}
|
||
break;
|
||
|
||
case EShLangTessEvaluation:
|
||
break;
|
||
|
||
case EShLangGeometry:
|
||
if (id == "invocations") {
|
||
profileRequires(loc, ECompatibilityProfile | ECoreProfile, 400, 0, "invocations");
|
||
publicType.shaderQualifiers.invocations = value;
|
||
return;
|
||
}
|
||
if (id == "max_vertices") {
|
||
publicType.shaderQualifiers.vertices = value;
|
||
if (value > resources.maxGeometryOutputVertices)
|
||
error(loc, "too large, must be less than gl_MaxGeometryOutputVertices", "max_vertices", "");
|
||
return;
|
||
}
|
||
if (id == "stream") {
|
||
publicType.qualifier.layoutStream = value;
|
||
return;
|
||
}
|
||
break;
|
||
|
||
case EShLangFragment:
|
||
break;
|
||
|
||
case EShLangCompute:
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
error(loc, "there is no such layout identifier for this stage taking an assigned value", id.c_str(), "");
|
||
}
|
||
|
||
//
|
||
// Merge characteristics of the 'src' qualifier into the 'dst', at the TPublicType level,
|
||
// which means for layout-qualifier information not kept per qualifier.
|
||
//
|
||
void TParseContext::mergeShaderLayoutQualifiers(TSourceLoc loc, TShaderQualifiers& dst, const TShaderQualifiers& src)
|
||
{
|
||
if (src.geometry != ElgNone)
|
||
dst.geometry = src.geometry;
|
||
if (src.invocations != 0)
|
||
dst.invocations = src.invocations;
|
||
if (src.vertices != 0)
|
||
dst.vertices = src.vertices;
|
||
if (src.pixelCenterInteger)
|
||
dst.pixelCenterInteger = src.pixelCenterInteger;
|
||
if (src.originUpperLeft)
|
||
dst.originUpperLeft = src.originUpperLeft;
|
||
}
|
||
|
||
// Merge any layout qualifier information from src into dst, leaving everything else in dst alone
|
||
void TParseContext::mergeObjectLayoutQualifiers(TSourceLoc loc, TQualifier& dst, const TQualifier& src)
|
||
{
|
||
if (src.layoutMatrix != ElmNone)
|
||
dst.layoutMatrix = src.layoutMatrix;
|
||
|
||
if (src.layoutPacking != ElpNone)
|
||
dst.layoutPacking = src.layoutPacking;
|
||
|
||
if (src.hasLocation())
|
||
dst.layoutSlotLocation = src.layoutSlotLocation;
|
||
|
||
if (src.hasBinding())
|
||
dst.layoutBinding = src.layoutBinding;
|
||
|
||
if (src.hasStream())
|
||
dst.layoutStream = src.layoutStream;
|
||
}
|
||
|
||
// Do error layout error checking given a full variable/block declaration.
|
||
void TParseContext::layoutTypeCheck(TSourceLoc loc, const TSymbol& symbol)
|
||
{
|
||
const TType& type = symbol.getType();
|
||
const TQualifier& qualifier = type.getQualifier();
|
||
|
||
// first, qualifier only error checking
|
||
layoutQualifierCheck(loc, qualifier);
|
||
|
||
// now, error checking combining type and qualifier
|
||
if (qualifier.hasLocation()) {
|
||
switch (qualifier.storage) {
|
||
case EvqVaryingIn:
|
||
{
|
||
if (type.getBasicType() == EbtBlock)
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 440, 0 /* TODO ARB_enhanced_layouts*/, "location qualifier on input block");
|
||
break;
|
||
}
|
||
case EvqVaryingOut:
|
||
{
|
||
if (type.getBasicType() == EbtBlock)
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 440, 0 /* TODO ARB_enhanced_layouts*/, "location qualifier on output block");
|
||
break;
|
||
}
|
||
case EvqUniform:
|
||
case EvqBuffer:
|
||
{
|
||
const char* feature = "location qualifier on uniform or buffer";
|
||
if (symbol.getAsVariable() == 0)
|
||
error(loc, "can only be used on variable declaration", feature, "");
|
||
break;
|
||
}
|
||
default:
|
||
break;
|
||
}
|
||
|
||
int repeated = intermediate.addUsedLocation(qualifier, type);
|
||
if (repeated >= 0)
|
||
error(loc, "repeated use of location", "location", "%d", repeated);
|
||
}
|
||
|
||
if (qualifier.hasBinding()) {
|
||
// Binding checking, from the spec:
|
||
//
|
||
// "If the binding point for any uniform or shader storage block instance is less than zero, or greater than or
|
||
// equal to the implementation-dependent maximum number of uniform buffer bindings, a compile-time
|
||
// error will occur. When the binding identifier is used with a uniform or shader storage block instanced as
|
||
// an array of size N, all elements of the array from binding through binding + N <20> 1 must be within this
|
||
// range."
|
||
//
|
||
if (type.getBasicType() != EbtSampler && type.getBasicType() != EbtBlock)
|
||
error(loc, "requires block, or sampler/image, or atomic-counter type", "binding", "");
|
||
// TODO: 4.2 functionality: atomic counter: include in test above
|
||
if (type.getBasicType() == EbtSampler) {
|
||
int lastBinding = qualifier.layoutBinding;
|
||
if (type.isArray())
|
||
lastBinding += type.getArraySize();
|
||
if (lastBinding >= resources.maxCombinedTextureImageUnits)
|
||
error(loc, "sampler binding not less than gl_MaxCombinedTextureImageUnits", "binding", type.isArray() ? "(using array)" : "");
|
||
}
|
||
}
|
||
}
|
||
|
||
// Do layout error checking that can be done within a qualifier proper, not needing to know
|
||
// if there are blocks, atomic counters, variables, etc.
|
||
void TParseContext::layoutQualifierCheck(TSourceLoc loc, const TQualifier& qualifier)
|
||
{
|
||
if (qualifier.hasLocation()) {
|
||
switch (qualifier.storage) {
|
||
case EvqVaryingIn:
|
||
{
|
||
const char* feature = "location qualifier on input";
|
||
if (profile == EEsProfile)
|
||
requireStage(loc, EShLangVertex, feature);
|
||
requireStage(loc, (EShLanguageMask)~EShLangComputeMask, feature);
|
||
if (language == EShLangVertex)
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 330, 0, feature);
|
||
else
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 410, GL_ARB_separate_shader_objects, feature);
|
||
break;
|
||
}
|
||
case EvqVaryingOut:
|
||
{
|
||
const char* feature = "location qualifier on output";
|
||
if (profile == EEsProfile)
|
||
requireStage(loc, EShLangFragment, feature);
|
||
requireStage(loc, (EShLanguageMask)~EShLangComputeMask, feature);
|
||
if (language == EShLangFragment)
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 330, 0, feature);
|
||
else
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 410, GL_ARB_separate_shader_objects, feature);
|
||
break;
|
||
}
|
||
case EvqUniform:
|
||
case EvqBuffer:
|
||
{
|
||
const char* feature = "location qualifier on uniform or buffer";
|
||
requireProfile(loc, ECoreProfile | ECompatibilityProfile, feature);
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 430, 0, feature);
|
||
break;
|
||
}
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (qualifier.hasBinding()) {
|
||
if (qualifier.storage != EvqUniform && qualifier.storage != EvqBuffer)
|
||
error(loc, "requires uniform or buffer storage qualifier", "binding", "");
|
||
}
|
||
|
||
if (qualifier.hasStream()) {
|
||
if (qualifier.storage != EvqVaryingOut)
|
||
error(loc, "can only be used on an output", "stream", "");
|
||
}
|
||
}
|
||
|
||
// For places that can't have shader-level layout qualifiers
|
||
void TParseContext::checkNoShaderLayouts(TSourceLoc loc, const TShaderQualifiers& shaderQualifiers)
|
||
{
|
||
const char* message = "can only apply to a standalone qualifier";
|
||
|
||
if (shaderQualifiers.geometry != ElgNone)
|
||
error(loc, message, TQualifier::getGeometryString(shaderQualifiers.geometry), "");
|
||
if (shaderQualifiers.invocations > 0)
|
||
error(loc, message, "invocations", "");
|
||
if (shaderQualifiers.vertices > 0)
|
||
error(loc, message, "max_vertices", "");
|
||
}
|
||
|
||
//
|
||
// Look up a function name in the symbol table, and make sure it is a function.
|
||
//
|
||
// Return the function symbol if found, otherwise 0.
|
||
//
|
||
const TFunction* TParseContext::findFunction(TSourceLoc loc, const TFunction& call, bool& builtIn)
|
||
{
|
||
const TFunction* function = 0;
|
||
|
||
if (symbolTable.isFunctionNameVariable(call.getName())) {
|
||
error(loc, "can't use function syntax on variable", call.getName().c_str(), "");
|
||
return 0;
|
||
}
|
||
|
||
if (profile == EEsProfile || version < 120)
|
||
function = findFunctionExact(loc, call, builtIn);
|
||
else if (version < 400)
|
||
function = findFunction120(loc, call, builtIn);
|
||
else
|
||
function = findFunction400(loc, call, builtIn);
|
||
|
||
return function;
|
||
}
|
||
|
||
// Function finding algorithm for ES and desktop 110.
|
||
const TFunction* TParseContext::findFunctionExact(TSourceLoc loc, const TFunction& call, bool& builtIn)
|
||
{
|
||
const TFunction* function = 0;
|
||
|
||
TSymbol* symbol = symbolTable.find(call.getMangledName(), &builtIn);
|
||
if (symbol == 0) {
|
||
error(loc, "no matching overloaded function found", call.getName().c_str(), "");
|
||
|
||
return 0;
|
||
}
|
||
|
||
return symbol->getAsFunction();
|
||
}
|
||
|
||
// Function finding algorithm for desktop versions 120 through 330.
|
||
const TFunction* TParseContext::findFunction120(TSourceLoc loc, const TFunction& call, bool& builtIn)
|
||
{
|
||
// first, look for an exact match
|
||
TSymbol* symbol = symbolTable.find(call.getMangledName(), &builtIn);
|
||
if (symbol)
|
||
return symbol->getAsFunction();
|
||
|
||
// exact match not found, look through a list of overloaded functions of the same name
|
||
|
||
// "If no exact match is found, then [implicit conversions] will be applied to find a match. Mismatched types
|
||
// on input parameters (in or inout or default) must have a conversion from the calling argument type to the
|
||
// formal parameter type. Mismatched types on output parameters (out or inout) must have a conversion
|
||
// from the formal parameter type to the calling argument type. When argument conversions are used to find
|
||
// a match, it is a semantic error if there are multiple ways to apply these conversions to make the call match
|
||
// more than one function."
|
||
|
||
const TFunction* candidate = 0;
|
||
TVector<TFunction*> candidateList;
|
||
symbolTable.findFunctionNameList(call.getMangledName(), candidateList, builtIn);
|
||
|
||
int numPossibleMatches = 0;
|
||
for (TVector<TFunction*>::const_iterator it = candidateList.begin(); it != candidateList.end(); ++it) {
|
||
const TFunction& function = *(*it);
|
||
|
||
// to even be a potential match, number of arguments has to match
|
||
if (call.getParamCount() != function.getParamCount())
|
||
continue;
|
||
|
||
bool possibleMatch = true;
|
||
for (int i = 0; i < function.getParamCount(); ++i) {
|
||
// same types is easy
|
||
if (*function[i].type == *call[i].type)
|
||
continue;
|
||
|
||
// We have a mismatch in type, see if it is implicitly convertible
|
||
|
||
if (function[i].type->isArray() || call[i].type->isArray() ||
|
||
! function[i].type->sameElementShape(*call[i].type))
|
||
possibleMatch = false;
|
||
else {
|
||
// do direction-specific checks for conversion of basic type
|
||
TStorageQualifier qualifier = function[i].type->getQualifier().storage;
|
||
if (qualifier == EvqIn || qualifier == EvqInOut) {
|
||
if (! intermediate.canImplicitlyPromote(call[i].type->getBasicType(), function[i].type->getBasicType()))
|
||
possibleMatch = false;
|
||
}
|
||
if (qualifier == EvqOut || qualifier == EvqInOut) {
|
||
if (! intermediate.canImplicitlyPromote(function[i].type->getBasicType(), call[i].type->getBasicType()))
|
||
possibleMatch = false;
|
||
}
|
||
}
|
||
if (! possibleMatch)
|
||
break;
|
||
}
|
||
if (possibleMatch) {
|
||
if (candidate) {
|
||
// our second match, meaning ambiguity
|
||
error(loc, "ambiguous function signature match: multiple signatures match under implicit type conversion", call.getName().c_str(), "");
|
||
} else
|
||
candidate = &function;
|
||
}
|
||
}
|
||
|
||
if (candidate == 0)
|
||
error(loc, "no matching overloaded function found", call.getName().c_str(), "");
|
||
|
||
return candidate;
|
||
}
|
||
|
||
// Function finding algorithm for desktop version 400 and above.
|
||
const TFunction* TParseContext::findFunction400(TSourceLoc loc, const TFunction& call, bool& builtIn)
|
||
{
|
||
// TODO: 4.00 functionality: findFunction400()
|
||
return findFunction120(loc, call, builtIn);
|
||
}
|
||
|
||
//
|
||
// Do everything necessary to handle a variable (non-block) declaration.
|
||
// Either redeclaring a variable, or making a new one, updating the symbol
|
||
// table, and all error checking.
|
||
//
|
||
// Returns a subtree node that computes an initializer, if needed.
|
||
// Returns 0 if there is no code to execute for initialization.
|
||
//
|
||
TIntermNode* TParseContext::declareVariable(TSourceLoc loc, TString& identifier, const TPublicType& publicType, TArraySizes* arraySizes, TIntermTyped* initializer)
|
||
{
|
||
TType type(publicType);
|
||
|
||
if (voidErrorCheck(loc, identifier, type.getBasicType()))
|
||
return 0;
|
||
|
||
if (! initializer)
|
||
nonInitConstCheck(loc, identifier, type);
|
||
|
||
invariantCheck(loc, type, identifier);
|
||
samplerCheck(loc, type, identifier);
|
||
|
||
// Pick up defaults
|
||
if (! type.getQualifier().hasStream() && language == EShLangGeometry && type.getQualifier().storage == EvqVaryingOut)
|
||
type.getQualifier().layoutStream = globalOutputDefaults.layoutStream;
|
||
|
||
if (identifier != "gl_FragCoord" && (publicType.shaderQualifiers.originUpperLeft || publicType.shaderQualifiers.pixelCenterInteger))
|
||
error(loc, "can only apply origin_upper_left and pixel_center_origin to gl_FragCoord", "layout qualifier", "");
|
||
|
||
// Check for redeclaration of built-ins and/or attempting to declare a reserved name
|
||
bool newDeclaration = false; // true if a new entry gets added to the symbol table
|
||
TSymbol* symbol = redeclareBuiltinVariable(loc, identifier, type.getQualifier(), publicType.shaderQualifiers, newDeclaration);
|
||
if (! symbol)
|
||
reservedErrorCheck(loc, identifier);
|
||
|
||
// Declare the variable
|
||
if (arraySizes || type.isArray()) {
|
||
// Arrayness is potentially coming both from the type and from the
|
||
// variable: "int[] a[];" or just one or the other.
|
||
// For now, arrays of arrays aren't supported, so it's just one or the
|
||
// other. Move it to the type, so all arrayness is part of the type.
|
||
arrayDimCheck(loc, &type, arraySizes);
|
||
if (arraySizes)
|
||
type.setArraySizes(arraySizes);
|
||
|
||
// for ES, if size isn't coming from an initializer, it has to be explicitly declared now
|
||
if (profile == EEsProfile && ! initializer)
|
||
arraySizeRequiredCheck(loc, type.getArraySize());
|
||
|
||
if (! arrayQualifierError(loc, type.getQualifier()))
|
||
declareArray(loc, identifier, type, symbol, newDeclaration);
|
||
|
||
if (initializer) {
|
||
profileRequires(loc, ENoProfile, 120, GL_3DL_array_objects, "initializer");
|
||
profileRequires(loc, EEsProfile, 300, 0, "initializer");
|
||
}
|
||
} else {
|
||
// non-array case
|
||
if (! symbol)
|
||
symbol = declareNonArray(loc, identifier, type, newDeclaration);
|
||
else if (type != symbol->getType())
|
||
error(loc, "cannot change the type of", "redeclaration", symbol->getName().c_str());
|
||
}
|
||
|
||
if (! symbol)
|
||
return 0;
|
||
|
||
// Deal with initializer
|
||
TIntermNode* initNode = 0;
|
||
if (symbol && initializer) {
|
||
TVariable* variable = symbol->getAsVariable();
|
||
if (! variable) {
|
||
error(loc, "initializer requires a variable, not a member", identifier.c_str(), "");
|
||
return 0;
|
||
}
|
||
initNode = executeInitializer(loc, identifier, initializer, variable);
|
||
}
|
||
|
||
// look for errors/adjustments in layout qualifier use
|
||
layoutTypeCheck(loc, *symbol);
|
||
|
||
// see if it's a linker-level object to track
|
||
if (newDeclaration && symbolTable.atGlobalLevel())
|
||
intermediate.addSymbolLinkageNode(linkage, *symbol);
|
||
|
||
return initNode;
|
||
}
|
||
|
||
//
|
||
// Declare a non-array variable, the main point being there is no redeclaration
|
||
// for resizing allowed.
|
||
//
|
||
// Return the successfully declared variable.
|
||
//
|
||
TVariable* TParseContext::declareNonArray(TSourceLoc loc, TString& identifier, TType& type, bool& newDeclaration)
|
||
{
|
||
// make a new variable
|
||
TVariable* variable = new TVariable(&identifier, type);
|
||
|
||
// add variable to symbol table
|
||
if (! symbolTable.insert(*variable)) {
|
||
error(loc, "redefinition", variable->getName().c_str(), "");
|
||
return 0;
|
||
} else {
|
||
newDeclaration = true;
|
||
return variable;
|
||
}
|
||
}
|
||
|
||
//
|
||
// Handle all types of initializers from the grammar.
|
||
//
|
||
// Returning 0 just means there is no code to execute to handle the
|
||
// initializer, which will, for example, be the case for constant initalizers.
|
||
//
|
||
TIntermNode* TParseContext::executeInitializer(TSourceLoc loc, TString& identifier,
|
||
TIntermTyped* initializer, TVariable* variable)
|
||
{
|
||
//
|
||
// Identifier must be of type constant, a global, or a temporary, and
|
||
// starting at version 120, desktop allows uniforms to have initializers.
|
||
//
|
||
TStorageQualifier qualifier = variable->getType().getQualifier().storage;
|
||
if (! (qualifier == EvqTemporary || qualifier == EvqGlobal || qualifier == EvqConst ||
|
||
(qualifier == EvqUniform && profile != EEsProfile && version >= 120))) {
|
||
error(loc, " cannot initialize this type of qualifier ", variable->getType().getStorageQualifierString(), "");
|
||
return 0;
|
||
}
|
||
arrayObjectCheck(loc, variable->getType(), "array initializer");
|
||
|
||
//
|
||
// If the initializer was from braces { ... }, we convert the whole subtree to a
|
||
// constructor-style subtree, allowing the rest of the code to operate
|
||
// identically for both kinds of initializers.
|
||
//
|
||
initializer = convertInitializerList(loc, variable->getType(), initializer);
|
||
if (! initializer) {
|
||
// error recovery; don't leave const without constant values
|
||
if (qualifier == EvqConst)
|
||
variable->getWritableType().getQualifier().storage = EvqTemporary;
|
||
return 0;
|
||
}
|
||
|
||
// Fix arrayness if variable is unsized, getting size from the initializer
|
||
if (initializer->getType().isArray() && initializer->getType().getArraySize() > 0 &&
|
||
variable->getType().isArray() && variable->getType().getArraySize() == 0)
|
||
variable->getWritableType().changeArraySize(initializer->getType().getArraySize());
|
||
|
||
// Uniform and global consts require a constant initializer
|
||
if (qualifier == EvqUniform && initializer->getType().getQualifier().storage != EvqConst) {
|
||
error(loc, "uniform initializers must be constant", "=", "'%s'", variable->getType().getCompleteString().c_str());
|
||
variable->getWritableType().getQualifier().storage = EvqTemporary;
|
||
return 0;
|
||
}
|
||
if (qualifier == EvqConst && symbolTable.atGlobalLevel() && initializer->getType().getQualifier().storage != EvqConst) {
|
||
error(loc, "global const initializers must be constant", "=", "'%s'", variable->getType().getCompleteString().c_str());
|
||
variable->getWritableType().getQualifier().storage = EvqTemporary;
|
||
return 0;
|
||
}
|
||
|
||
// Const variables require a constant initializer, depending on version
|
||
if (qualifier == EvqConst) {
|
||
if (initializer->getType().getQualifier().storage != EvqConst) {
|
||
const char* initFeature = "non-constant initializer";
|
||
requireProfile(loc, ECoreProfile | ECompatibilityProfile, initFeature);
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 420, GL_ARB_shading_language_420pack, initFeature);
|
||
variable->getWritableType().getQualifier().storage = EvqConstReadOnly;
|
||
qualifier = EvqConstReadOnly;
|
||
}
|
||
}
|
||
|
||
if (qualifier == EvqConst || qualifier == EvqUniform) {
|
||
// Compile-time tagging of the variable with it's constant value...
|
||
|
||
initializer = intermediate.addConversion(EOpAssign, variable->getType(), initializer);
|
||
if (! initializer || ! initializer->getAsConstantUnion() || variable->getType() != initializer->getType()) {
|
||
error(loc, "non-matching or non-convertible constant type for const initializer",
|
||
variable->getType().getStorageQualifierString(), "");
|
||
variable->getWritableType().getQualifier().storage = EvqTemporary;
|
||
return 0;
|
||
}
|
||
|
||
variable->setConstArray(initializer->getAsConstantUnion()->getConstArray());
|
||
} else {
|
||
// normal assigning of a value to a variable...
|
||
TIntermSymbol* intermSymbol = intermediate.addSymbol(variable->getUniqueId(), variable->getName(), variable->getType(), loc);
|
||
TIntermNode* initNode = intermediate.addAssign(EOpAssign, intermSymbol, initializer, loc);
|
||
if (! initNode)
|
||
assignError(loc, "=", intermSymbol->getCompleteString(), initializer->getCompleteString());
|
||
|
||
return initNode;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
//
|
||
// Reprocess any initalizer-list { ... } parts of the initializer.
|
||
// Need to heirarchically assign correct types and implicit
|
||
// conversions. Will do this mimicking the same process used for
|
||
// creating a constructor-style initializer, ensuring we get the
|
||
// same form.
|
||
//
|
||
TIntermTyped* TParseContext::convertInitializerList(TSourceLoc loc, const TType& type, TIntermTyped* initializer)
|
||
{
|
||
// Will operate recursively. Once a subtree is found that is constructor style,
|
||
// everything below it is already good: Only the "top part" of the initializer
|
||
// can be an initializer list, where "top part" can extend for several (or all) levels.
|
||
|
||
// see if we have bottomed out in the tree within the initializer-list part
|
||
TIntermAggregate* initList = initializer->getAsAggregate();
|
||
if (! initList || initList->getOp() != EOpNull)
|
||
return initializer;
|
||
|
||
// Of the initializer-list set of nodes, need to process bottom up,
|
||
// so recurse deep, then process on the way up.
|
||
|
||
// Go down the tree here...
|
||
if (type.isArray()) {
|
||
// The type's array might be unsized, which could be okay, so base sizes on the size of the aggregate.
|
||
// Later on, initializer execution code will deal with array size logic.
|
||
TType arrayType;
|
||
arrayType.shallowCopy(type);
|
||
arrayType.setArraySizes(type);
|
||
arrayType.changeArraySize(initList->getSequence().size());
|
||
TType elementType(arrayType, 0); // dereferenced type
|
||
for (size_t i = 0; i < initList->getSequence().size(); ++i) {
|
||
initList->getSequence()[i] = convertInitializerList(loc, elementType, initList->getSequence()[i]->getAsTyped());
|
||
if (initList->getSequence()[i] == 0)
|
||
return 0;
|
||
}
|
||
|
||
return addConstructor(loc, initList, arrayType, mapTypeToConstructorOp(arrayType));
|
||
} else if (type.isStruct()) {
|
||
if (type.getStruct()->size() != initList->getSequence().size()) {
|
||
error(loc, "wrong number of structure members", "initializer list", "");
|
||
return 0;
|
||
}
|
||
for (size_t i = 0; i < type.getStruct()->size(); ++i) {
|
||
initList->getSequence()[i] = convertInitializerList(loc, *(*type.getStruct())[i].type, initList->getSequence()[i]->getAsTyped());
|
||
if (initList->getSequence()[i] == 0)
|
||
return 0;
|
||
}
|
||
} else if (type.isMatrix()) {
|
||
if (type.getMatrixCols() != initList->getSequence().size()) {
|
||
error(loc, "wrong number of matrix columns:", "initializer list", type.getCompleteString().c_str());
|
||
return 0;
|
||
}
|
||
TType vectorType(type, 0); // dereferenced type
|
||
for (int i = 0; i < type.getMatrixCols(); ++i) {
|
||
initList->getSequence()[i] = convertInitializerList(loc, vectorType, initList->getSequence()[i]->getAsTyped());
|
||
if (initList->getSequence()[i] == 0)
|
||
return 0;
|
||
}
|
||
} else if (type.isVector()) {
|
||
if (type.getVectorSize() != initList->getSequence().size()) {
|
||
error(loc, "wrong vector size (or rows in a matrix column):", "initializer list", type.getCompleteString().c_str());
|
||
return 0;
|
||
}
|
||
} else {
|
||
error(loc, "unexpected initializer-list type:", "initializer list", type.getCompleteString().c_str());
|
||
return 0;
|
||
}
|
||
|
||
// now that the subtree is processed, process this node
|
||
return addConstructor(loc, initList, type, mapTypeToConstructorOp(type));
|
||
}
|
||
|
||
//
|
||
// Test for the correctness of the parameters passed to various constructor functions
|
||
// and also convert them to the right data type, if allowed and required.
|
||
//
|
||
// Returns 0 for an error or the constructed node (aggregate or typed) for no error.
|
||
//
|
||
TIntermTyped* TParseContext::addConstructor(TSourceLoc loc, TIntermNode* node, const TType& type, TOperator op)
|
||
{
|
||
if (node == 0)
|
||
return 0;
|
||
|
||
TIntermAggregate* aggrNode = node->getAsAggregate();
|
||
|
||
TTypeList::iterator memberTypes;
|
||
if (op == EOpConstructStruct)
|
||
memberTypes = type.getStruct()->begin();
|
||
|
||
TType elementType;
|
||
elementType.shallowCopy(type);
|
||
if (type.isArray())
|
||
elementType.dereference();
|
||
|
||
bool singleArg;
|
||
if (aggrNode) {
|
||
if (aggrNode->getOp() != EOpNull || aggrNode->getSequence().size() == 1)
|
||
singleArg = true;
|
||
else
|
||
singleArg = false;
|
||
} else
|
||
singleArg = true;
|
||
|
||
TIntermTyped *newNode;
|
||
if (singleArg) {
|
||
// If structure constructor or array constructor is being called
|
||
// for only one parameter inside the structure, we need to call constructStruct function once.
|
||
if (type.isArray())
|
||
newNode = constructStruct(node, elementType, 1, node->getLoc());
|
||
else if (op == EOpConstructStruct)
|
||
newNode = constructStruct(node, *(*memberTypes).type, 1, node->getLoc());
|
||
else
|
||
newNode = constructBuiltIn(type, op, node, node->getLoc(), false);
|
||
|
||
if (newNode && (type.isArray() || op == EOpConstructStruct))
|
||
newNode = intermediate.setAggregateOperator(newNode, EOpConstructStruct, type, loc);
|
||
|
||
return newNode;
|
||
}
|
||
|
||
//
|
||
// Handle list of arguments.
|
||
//
|
||
TIntermSequence &sequenceVector = aggrNode->getSequence(); // Stores the information about the parameter to the constructor
|
||
// if the structure constructor contains more than one parameter, then construct
|
||
// each parameter
|
||
|
||
int paramCount = 0; // keeps a track of the constructor parameter number being checked
|
||
|
||
// for each parameter to the constructor call, check to see if the right type is passed or convert them
|
||
// to the right type if possible (and allowed).
|
||
// for structure constructors, just check if the right type is passed, no conversion is allowed.
|
||
|
||
for (TIntermSequence::iterator p = sequenceVector.begin();
|
||
p != sequenceVector.end(); p++, paramCount++) {
|
||
if (type.isArray())
|
||
newNode = constructStruct(*p, elementType, paramCount+1, node->getLoc());
|
||
else if (op == EOpConstructStruct)
|
||
newNode = constructStruct(*p, *(memberTypes[paramCount]).type, paramCount+1, node->getLoc());
|
||
else
|
||
newNode = constructBuiltIn(type, op, *p, node->getLoc(), true);
|
||
|
||
if (newNode)
|
||
*p = newNode;
|
||
else
|
||
return 0;
|
||
}
|
||
|
||
TIntermTyped* constructor = intermediate.setAggregateOperator(aggrNode, op, type, loc);
|
||
|
||
return constructor;
|
||
}
|
||
|
||
// Function for constructor implementation. Calls addUnaryMath with appropriate EOp value
|
||
// for the parameter to the constructor (passed to this function). Essentially, it converts
|
||
// the parameter types correctly. If a constructor expects an int (like ivec2) and is passed a
|
||
// float, then float is converted to int.
|
||
//
|
||
// Returns 0 for an error or the constructed node.
|
||
//
|
||
TIntermTyped* TParseContext::constructBuiltIn(const TType& type, TOperator op, TIntermNode* node, TSourceLoc loc, bool subset)
|
||
{
|
||
TIntermTyped* newNode;
|
||
TOperator basicOp;
|
||
|
||
//
|
||
// First, convert types as needed.
|
||
//
|
||
switch (op) {
|
||
case EOpConstructVec2:
|
||
case EOpConstructVec3:
|
||
case EOpConstructVec4:
|
||
case EOpConstructMat2x2:
|
||
case EOpConstructMat2x3:
|
||
case EOpConstructMat2x4:
|
||
case EOpConstructMat3x2:
|
||
case EOpConstructMat3x3:
|
||
case EOpConstructMat3x4:
|
||
case EOpConstructMat4x2:
|
||
case EOpConstructMat4x3:
|
||
case EOpConstructMat4x4:
|
||
case EOpConstructFloat:
|
||
basicOp = EOpConstructFloat;
|
||
break;
|
||
|
||
case EOpConstructDVec2:
|
||
case EOpConstructDVec3:
|
||
case EOpConstructDVec4:
|
||
case EOpConstructDMat2x2:
|
||
case EOpConstructDMat2x3:
|
||
case EOpConstructDMat2x4:
|
||
case EOpConstructDMat3x2:
|
||
case EOpConstructDMat3x3:
|
||
case EOpConstructDMat3x4:
|
||
case EOpConstructDMat4x2:
|
||
case EOpConstructDMat4x3:
|
||
case EOpConstructDMat4x4:
|
||
case EOpConstructDouble:
|
||
basicOp = EOpConstructDouble;
|
||
break;
|
||
|
||
case EOpConstructIVec2:
|
||
case EOpConstructIVec3:
|
||
case EOpConstructIVec4:
|
||
case EOpConstructInt:
|
||
basicOp = EOpConstructInt;
|
||
break;
|
||
|
||
case EOpConstructUVec2:
|
||
case EOpConstructUVec3:
|
||
case EOpConstructUVec4:
|
||
case EOpConstructUint:
|
||
basicOp = EOpConstructUint;
|
||
break;
|
||
|
||
case EOpConstructBVec2:
|
||
case EOpConstructBVec3:
|
||
case EOpConstructBVec4:
|
||
case EOpConstructBool:
|
||
basicOp = EOpConstructBool;
|
||
break;
|
||
|
||
default:
|
||
error(loc, "unsupported construction", "", "");
|
||
|
||
return 0;
|
||
}
|
||
newNode = intermediate.addUnaryMath(basicOp, node, node->getLoc());
|
||
if (newNode == 0) {
|
||
error(loc, "can't convert", "constructor", "");
|
||
return 0;
|
||
}
|
||
|
||
//
|
||
// Now, if there still isn't an operation to do the construction, and we need one, add one.
|
||
//
|
||
|
||
// Otherwise, skip out early.
|
||
if (subset || (newNode != node && newNode->getType() == type))
|
||
return newNode;
|
||
|
||
// setAggregateOperator will insert a new node for the constructor, as needed.
|
||
return intermediate.setAggregateOperator(newNode, op, type, loc);
|
||
}
|
||
|
||
// This function tests for the type of the parameters to the structures constructors. Raises
|
||
// an error message if the expected type does not match the parameter passed to the constructor.
|
||
//
|
||
// Returns 0 for an error or the input node itself if the expected and the given parameter types match.
|
||
//
|
||
TIntermTyped* TParseContext::constructStruct(TIntermNode* node, const TType& type, int paramCount, TSourceLoc loc)
|
||
{
|
||
TIntermTyped* converted = intermediate.addConversion(EOpConstructStruct, type, node->getAsTyped());
|
||
if (! converted || converted->getType() != type) {
|
||
error(loc, "", "constructor", "cannot convert parameter %d from '%s' to '%s'", paramCount,
|
||
node->getAsTyped()->getType().getCompleteString().c_str(), type.getCompleteString().c_str());
|
||
|
||
return 0;
|
||
}
|
||
|
||
return converted;
|
||
}
|
||
|
||
//
|
||
// Do everything needed to add an interface block.
|
||
//
|
||
void TParseContext::declareBlock(TSourceLoc loc, TTypeList& typeList, const TString* instanceName, TArraySizes* arraySizes)
|
||
{
|
||
if (profile == EEsProfile && arraySizes)
|
||
arraySizeRequiredCheck(loc, arraySizes->getSize());
|
||
|
||
switch (currentBlockQualifier.storage) {
|
||
case EvqBuffer:
|
||
requireProfile(loc, ECoreProfile | ECompatibilityProfile, "buffer block");
|
||
profileRequires(loc, ECoreProfile | ECompatibilityProfile, 430, 0, "buffer block");
|
||
break;
|
||
case EvqUniform:
|
||
profileRequires(loc, EEsProfile, 300, 0, "uniform block");
|
||
profileRequires(loc, ENoProfile, 140, 0, "uniform block");
|
||
break;
|
||
case EvqVaryingIn:
|
||
requireProfile(loc, ECoreProfile | ECompatibilityProfile, "input block");
|
||
break;
|
||
case EvqVaryingOut:
|
||
requireProfile(loc, ECoreProfile | ECompatibilityProfile, "output block");
|
||
break;
|
||
default:
|
||
error(loc, "only uniform, buffer, in, or out blocks are supported", blockName->c_str(), "");
|
||
return;
|
||
}
|
||
|
||
arrayDimCheck(loc, arraySizes, 0);
|
||
|
||
// fix and check for member storage qualifiers and types that don't belong within a block
|
||
for (unsigned int member = 0; member < typeList.size(); ++member) {
|
||
TQualifier& memberQualifier = typeList[member].type->getQualifier();
|
||
TSourceLoc memberLoc = typeList[member].loc;
|
||
pipeInOutFix(memberLoc, memberQualifier);
|
||
if (memberQualifier.storage != EvqTemporary && memberQualifier.storage != EvqGlobal && memberQualifier.storage != currentBlockQualifier.storage)
|
||
error(memberLoc, "member storage qualifier cannot contradict block storage qualifier", typeList[member].type->getFieldName().c_str(), "");
|
||
if (currentBlockQualifier.storage == EvqUniform && (memberQualifier.isInterpolation() || memberQualifier.isAuxiliary()))
|
||
error(memberLoc, "member of uniform block cannot have an auxiliary or interpolation qualifier", typeList[member].type->getFieldName().c_str(), "");
|
||
|
||
TBasicType basicType = typeList[member].type->getBasicType();
|
||
if (basicType == EbtSampler)
|
||
error(memberLoc, "member of block cannot be a sampler type", typeList[member].type->getFieldName().c_str(), "");
|
||
}
|
||
|
||
// This might be a redeclaration of a built-in block. If so, redeclareBuiltinBlock() will
|
||
// do all the rest.
|
||
if (! symbolTable.atBuiltInLevel() && builtInName(*blockName)) {
|
||
redeclareBuiltinBlock(loc, typeList, *blockName, instanceName, arraySizes);
|
||
return;
|
||
}
|
||
|
||
// Not a redeclaration of a built-in; check that all names are user names.
|
||
reservedErrorCheck(loc, *blockName);
|
||
if (instanceName)
|
||
reservedErrorCheck(loc, *instanceName);
|
||
for (unsigned int member = 0; member < typeList.size(); ++member)
|
||
reservedErrorCheck(typeList[member].loc, typeList[member].type->getFieldName());
|
||
|
||
// Make default block qualification, and adjust the member qualifications
|
||
|
||
TQualifier defaultQualification;
|
||
switch (currentBlockQualifier.storage) {
|
||
case EvqBuffer: defaultQualification = globalBufferDefaults; break;
|
||
case EvqUniform: defaultQualification = globalUniformDefaults; break;
|
||
case EvqVaryingIn: defaultQualification = globalInputDefaults; break;
|
||
case EvqVaryingOut: defaultQualification = globalOutputDefaults; break;
|
||
default: defaultQualification.clear(); break;
|
||
}
|
||
|
||
// fix and check for member layout qualifiers
|
||
mergeObjectLayoutQualifiers(loc, defaultQualification, currentBlockQualifier);
|
||
for (unsigned int member = 0; member < typeList.size(); ++member) {
|
||
TQualifier& memberQualifier = typeList[member].type->getQualifier();
|
||
TSourceLoc memberLoc = typeList[member].loc;
|
||
if (memberQualifier.hasStream()) {
|
||
if (defaultQualification.layoutStream != memberQualifier.layoutStream)
|
||
error(memberLoc, "member cannot contradict block", "stream", "");
|
||
}
|
||
if (memberQualifier.layoutPacking != ElpNone)
|
||
error(memberLoc, "member of block cannot have a packing layout qualifier", typeList[member].type->getFieldName().c_str(), "");
|
||
TQualifier newMemberQualification = defaultQualification;
|
||
mergeQualifiers(memberLoc, newMemberQualification, memberQualifier, false);
|
||
memberQualifier = newMemberQualification;
|
||
}
|
||
|
||
// reverse merge, so that currentBlockQualifier now has all layout information
|
||
// (can't use defaultQualification directly, it's missing other non-layout-default-class qualifiers)
|
||
mergeObjectLayoutQualifiers(loc, currentBlockQualifier, defaultQualification);
|
||
|
||
//
|
||
// Build and add the interface block as a new type named 'blockName'
|
||
//
|
||
|
||
TType blockType(&typeList, *blockName, currentBlockQualifier);
|
||
if (arraySizes)
|
||
blockType.setArraySizes(arraySizes);
|
||
|
||
//
|
||
// Don't make a user-defined type out of block name; that will cause an error
|
||
// if the same block name gets reused in a different interface.
|
||
//
|
||
// "Block names have no other use within a shader
|
||
// beyond interface matching; it is a compile-time error to use a block name at global scope for anything
|
||
// other than as a block name (e.g., use of a block name for a global variable name or function name is
|
||
// currently reserved)."
|
||
//
|
||
// Use the symbol table to prevent normal reuse of the block's name, as a variable entry,
|
||
// whose type is EbtBlock, but without all the structure; that will come from the type
|
||
// the instances point to.
|
||
//
|
||
TType blockNameType(EbtBlock, blockType.getQualifier().storage);
|
||
TVariable* blockNameVar = new TVariable(blockName, blockNameType);
|
||
if (! symbolTable.insert(*blockNameVar)) {
|
||
TSymbol* existingName = symbolTable.find(*blockName);
|
||
if (existingName->getType().getBasicType() == EbtBlock) {
|
||
if (existingName->getType().getQualifier().storage == blockType.getQualifier().storage) {
|
||
error(loc, "Cannot reuse block name within the same interface:", blockName->c_str(), blockType.getStorageQualifierString());
|
||
return;
|
||
}
|
||
} else {
|
||
error(loc, "block name cannot redefine a non-block name", blockName->c_str(), "");
|
||
return;
|
||
}
|
||
}
|
||
|
||
// Add the variable, as anonymous or named instanceName.
|
||
// Make an anonymous variable if no name was provided.
|
||
if (! instanceName)
|
||
instanceName = NewPoolTString("");
|
||
|
||
TVariable& variable = *new TVariable(instanceName, blockType);
|
||
if (! symbolTable.insert(variable)) {
|
||
if (*instanceName == "")
|
||
error(loc, "nameless block contains a member that already has a name at global scope", blockName->c_str(), "");
|
||
else
|
||
error(loc, "block instance name redefinition", variable.getName().c_str(), "");
|
||
|
||
return;
|
||
}
|
||
|
||
// Check for general layout qualifier errors
|
||
layoutTypeCheck(loc, variable);
|
||
|
||
// Save it in the AST for linker use.
|
||
intermediate.addSymbolLinkageNode(linkage, variable);
|
||
}
|
||
|
||
// For an identifier that is already declared, add more qualification to it.
|
||
void TParseContext::addQualifierToExisting(TSourceLoc loc, TQualifier qualifier, const TString& identifier)
|
||
{
|
||
TSymbol* symbol = symbolTable.find(identifier);
|
||
if (! symbol) {
|
||
error(loc, "identifier not previously declared", identifier.c_str(), "");
|
||
return;
|
||
}
|
||
if (symbol->getAsFunction()) {
|
||
error(loc, "cannot re-qualify a function name", identifier.c_str(), "");
|
||
return;
|
||
}
|
||
|
||
if (qualifier.isAuxiliary() ||
|
||
qualifier.isMemory() ||
|
||
qualifier.isInterpolation() ||
|
||
qualifier.storage != EvqTemporary ||
|
||
qualifier.precision != EpqNone) {
|
||
error(loc, "cannot add storage, auxiliary, memory, interpolation, or precision qualifier to an existing variable", identifier.c_str(), "");
|
||
|
||
return;
|
||
}
|
||
|
||
// For read-only built-ins, add a new symbol for holding the modified qualifier.
|
||
// This will bring up an entire block, if a block type has to be modified (e.g., gl_Position inside a block)
|
||
if (symbol->isReadOnly())
|
||
symbol = symbolTable.copyUp(symbol);
|
||
|
||
if (qualifier.invariant) {
|
||
if (intermediate.inIoAccessed(identifier))
|
||
error(loc, "cannot change qualification after use", "invariant", "");
|
||
symbol->getWritableType().getQualifier().invariant = true;
|
||
invariantCheck(loc, symbol->getType(), identifier);
|
||
}
|
||
}
|
||
|
||
void TParseContext::addQualifierToExisting(TSourceLoc loc, TQualifier qualifier, TIdentifierList& identifiers)
|
||
{
|
||
for (unsigned int i = 0; i < identifiers.size(); ++i)
|
||
addQualifierToExisting(loc, qualifier, *identifiers[i]);
|
||
}
|
||
|
||
void TParseContext::invariantCheck(TSourceLoc loc, const TType& type, const TString& identifier)
|
||
{
|
||
if (! type.getQualifier().invariant)
|
||
return;
|
||
|
||
bool pipeOut = type.getQualifier().isPipeOutput();
|
||
bool pipeIn = type.getQualifier().isPipeInput();
|
||
if (version >= 300 || profile != EEsProfile && version >= 420) {
|
||
if (! pipeOut)
|
||
error(loc, "can only apply to an output:", "invariant", identifier.c_str());
|
||
} else {
|
||
if ((language == EShLangVertex && pipeIn) || (! pipeOut && ! pipeIn))
|
||
error(loc, "can only apply to an output or an input in a non-vertex stage\n", "invariant", "");
|
||
}
|
||
}
|
||
|
||
//
|
||
// Updating default qualifier for the case of a declaration with just a qualifier,
|
||
// no type, block, or identifier.
|
||
//
|
||
void TParseContext::updateStandaloneQualifierDefaults(TSourceLoc loc, const TPublicType& publicType)
|
||
{
|
||
if (publicType.shaderQualifiers.vertices) {
|
||
if (! intermediate.setVertices(publicType.shaderQualifiers.vertices)) {
|
||
if (language == EShLangGeometry)
|
||
error(loc, "cannot change previously set layout value", "max_vertices", "");
|
||
else
|
||
error(loc, "cannot change previously set layout value", "vertices", "");
|
||
}
|
||
}
|
||
if (publicType.shaderQualifiers.invocations) {
|
||
if (! intermediate.setInvocations(publicType.shaderQualifiers.invocations))
|
||
error(loc, "cannot change previously set layout value", "invocations", "");
|
||
}
|
||
if (publicType.shaderQualifiers.geometry != ElgNone) {
|
||
if (publicType.qualifier.storage == EvqVaryingIn) {
|
||
switch (publicType.shaderQualifiers.geometry) {
|
||
case ElgPoints:
|
||
case ElgLines:
|
||
case ElgLinesAdjacency:
|
||
case ElgTriangles:
|
||
case ElgTrianglesAdjacency:
|
||
case ElgQuads:
|
||
case ElgIsolines:
|
||
if (intermediate.setInputPrimitive(publicType.shaderQualifiers.geometry))
|
||
checkInputArrayConsistency(loc);
|
||
else
|
||
error(loc, "cannot change previously set input primitive", TQualifier::getGeometryString(publicType.shaderQualifiers.geometry), "");
|
||
break;
|
||
default:
|
||
error(loc, "does not apply to input", TQualifier::getGeometryString(publicType.shaderQualifiers.geometry), "");
|
||
}
|
||
} else if (publicType.qualifier.storage == EvqVaryingOut) {
|
||
switch (publicType.shaderQualifiers.geometry) {
|
||
case ElgPoints:
|
||
case ElgLineStrip:
|
||
case ElgTriangleStrip:
|
||
if (! intermediate.setOutputPrimitive(publicType.shaderQualifiers.geometry))
|
||
error(loc, "cannot change previously set output primitive", TQualifier::getGeometryString(publicType.shaderQualifiers.geometry), "");
|
||
break;
|
||
default:
|
||
error(loc, "does not only apply to output", TQualifier::getGeometryString(publicType.shaderQualifiers.geometry), "");
|
||
}
|
||
} else
|
||
error(loc, "cannot be used here", TQualifier::getGeometryString(publicType.shaderQualifiers.geometry), "");
|
||
}
|
||
if (publicType.shaderQualifiers.spacing != EvsNone) {
|
||
if (! intermediate.setVertexSpacing(publicType.shaderQualifiers.spacing))
|
||
error(loc, "cannot change previously set vertex spacing", TQualifier::getVertexSpacingString(publicType.shaderQualifiers.spacing), "");
|
||
}
|
||
if (publicType.shaderQualifiers.order != EvoNone) {
|
||
if (! intermediate.setVertexOrder(publicType.shaderQualifiers.order))
|
||
error(loc, "cannot change previously set vertex order", TQualifier::getVertexOrderString(publicType.shaderQualifiers.order), "");
|
||
}
|
||
if (publicType.shaderQualifiers.pointMode)
|
||
intermediate.setPointMode();
|
||
|
||
const TQualifier& qualifier = publicType.qualifier;
|
||
|
||
if (qualifier.isAuxiliary() ||
|
||
qualifier.isMemory() ||
|
||
qualifier.isInterpolation() ||
|
||
qualifier.precision != EpqNone)
|
||
error(loc, "cannot use auxiliary, memory, interpolation, or precision qualifier in a default qualifier declaration (declaration with no type)", "", "");
|
||
|
||
layoutQualifierCheck(loc, qualifier);
|
||
|
||
switch (qualifier.storage) {
|
||
case EvqUniform:
|
||
if (qualifier.layoutMatrix != ElmNone)
|
||
globalUniformDefaults.layoutMatrix = qualifier.layoutMatrix;
|
||
if (qualifier.layoutPacking != ElpNone)
|
||
globalUniformDefaults.layoutPacking = qualifier.layoutPacking;
|
||
break;
|
||
case EvqBuffer:
|
||
if (qualifier.layoutMatrix != ElmNone)
|
||
globalBufferDefaults.layoutMatrix = qualifier.layoutMatrix;
|
||
if (qualifier.layoutPacking != ElpNone)
|
||
globalBufferDefaults.layoutPacking = qualifier.layoutPacking;
|
||
break;
|
||
case EvqVaryingIn:
|
||
break;
|
||
case EvqVaryingOut:
|
||
if (qualifier.hasStream())
|
||
globalOutputDefaults.layoutStream = qualifier.layoutStream;
|
||
break;
|
||
default:
|
||
error(loc, "default qualifier requires 'uniform', 'buffer', 'in', or 'out' storage qualification", "", "");
|
||
return;
|
||
}
|
||
|
||
if (qualifier.hasBinding())
|
||
error(loc, "cannot declare a default, include a type or full declaration", "binding", "");
|
||
if (qualifier.hasLocation())
|
||
error(loc, "cannot declare a default, use a full declaration", "location", "");
|
||
}
|
||
|
||
//
|
||
// Update defaults for qualifiers when declared with a type, and optionally an identifier.
|
||
// (But, not the case of just a qualifier.)
|
||
//
|
||
void TParseContext::updateTypedDefaults(TSourceLoc loc, const TQualifier& qualifier, const TString* id)
|
||
{
|
||
if (! id) {
|
||
if (qualifier.hasLayout())
|
||
warn(loc, "cannot set qualifier defaults when using a type and no identifier", "", "");
|
||
|
||
return;
|
||
}
|
||
|
||
switch (qualifier.storage) {
|
||
case EvqBuffer:
|
||
case EvqUniform:
|
||
if (qualifier.layoutMatrix != ElmNone)
|
||
error(loc, "cannot specify matrix layout on a variable declaration", id->c_str(), "");
|
||
if (qualifier.layoutPacking != ElpNone)
|
||
error(loc, "cannot specify packing on a variable declaration", id->c_str(), "");
|
||
break;
|
||
case EvqVaryingIn:
|
||
if (qualifier.hasLocation())
|
||
globalInputDefaults.layoutSlotLocation = qualifier.layoutSlotLocation;
|
||
break;
|
||
case EvqVaryingOut:
|
||
if (qualifier.hasLocation())
|
||
globalOutputDefaults.layoutSlotLocation = qualifier.layoutSlotLocation;
|
||
break;
|
||
default:
|
||
if (qualifier.layoutMatrix != ElmNone ||
|
||
qualifier.layoutPacking != ElpNone)
|
||
error(loc, "layout qualifiers for matrix layout and packing only apply to uniform or buffer blocks", id->c_str(), "");
|
||
else if (qualifier.hasLocation())
|
||
error(loc, "location qualifiers only appy to uniform, buffer, in, or out storage qualifiers", id->c_str(), "");
|
||
}
|
||
}
|
||
|
||
//
|
||
// Take the sequence of statements that has been built up since the last case/default,
|
||
// put it on the list of top-level nodes for the current (inner-most) switch statement,
|
||
// and follow that by the case/default we are on now. (See switch topology comment on
|
||
// TIntermSwitch.)
|
||
//
|
||
void TParseContext::wrapupSwitchSubsequence(TIntermAggregate* statements, TIntermNode* branchNode)
|
||
{
|
||
TIntermSequence* switchSequence = switchSequenceStack.back();
|
||
|
||
if (statements) {
|
||
if (switchSequence->size() == 0)
|
||
error(statements->getLoc(), "cannot have statements before first case/default label", "switch", "");
|
||
statements->setOperator(EOpSequence);
|
||
switchSequence->push_back(statements);
|
||
}
|
||
if (branchNode) {
|
||
// check all previous cases for the same label (or both are 'default')
|
||
for (unsigned int s = 0; s < switchSequence->size(); ++s) {
|
||
TIntermBranch* prevBranch = (*switchSequence)[s]->getAsBranchNode();
|
||
if (prevBranch) {
|
||
TIntermTyped* prevExpression = prevBranch->getExpression();
|
||
TIntermTyped* newExpression = branchNode->getAsBranchNode()->getExpression();
|
||
if (prevExpression == 0 && newExpression == 0)
|
||
error(branchNode->getLoc(), "duplicate label", "default", "");
|
||
else if (prevExpression != 0 &&
|
||
newExpression != 0 &&
|
||
prevExpression->getAsConstantUnion() &&
|
||
newExpression->getAsConstantUnion() &&
|
||
prevExpression->getAsConstantUnion()->getConstArray()[0].getIConst() ==
|
||
newExpression->getAsConstantUnion()->getConstArray()[0].getIConst())
|
||
error(branchNode->getLoc(), "duplicated value", "case", "");
|
||
}
|
||
}
|
||
switchSequence->push_back(branchNode);
|
||
}
|
||
}
|
||
|
||
//
|
||
// Turn the top-level node sequence built up of wrapupSwitchSubsequence9)
|
||
// into a switch node.
|
||
//
|
||
TIntermNode* TParseContext::addSwitch(TSourceLoc loc, TIntermTyped* expression, TIntermAggregate* lastStatements)
|
||
{
|
||
profileRequires(loc, EEsProfile, 300, 0, "switch statements");
|
||
profileRequires(loc, ENoProfile, 130, 0, "switch statements");
|
||
|
||
wrapupSwitchSubsequence(lastStatements, 0);
|
||
|
||
if (expression == 0 ||
|
||
(expression->getBasicType() != EbtInt && expression->getBasicType() != EbtUint) ||
|
||
expression->getType().isArray() || expression->getType().isMatrix() || expression->getType().isVector())
|
||
error(loc, "condition must be a scalar integer expression", "switch", "");
|
||
|
||
// If there is nothing to do, drop the switch but still execute the expression
|
||
TIntermSequence* switchSequence = switchSequenceStack.back();
|
||
if (switchSequence->size() == 0)
|
||
return expression;
|
||
|
||
if (lastStatements == 0) {
|
||
error(loc, "last case/default label must be followed by statements", "switch", "");
|
||
|
||
return expression;
|
||
}
|
||
|
||
TIntermAggregate* body = new TIntermAggregate(EOpSequence);
|
||
body->getSequence() = *switchSequenceStack.back();
|
||
body->setLoc(loc);
|
||
|
||
TIntermSwitch* switchNode = new TIntermSwitch(expression, body);
|
||
switchNode->setLoc(loc);
|
||
|
||
return switchNode;
|
||
}
|
||
|
||
} // end namespace glslang
|