e320a1854b
For 4.2, largely, it is only the grammar that is working. Productions and semantics are mostly missing. Lexical analysis is mostly done, but not in the preprocessor, which still can't handle uint and double literals. The grammar and token names are reorganized to match the specification, to allow easier comparison between the specification and the working grammar. git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@19946 e7fa87d3-cd2b-0410-9028-fcbf551c1848
132 lines
4.7 KiB
C
132 lines
4.7 KiB
C
//
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//Copyright (C) 2002-2005 3Dlabs Inc. Ltd.
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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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#ifndef _BASICTYPES_INCLUDED_
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#define _BASICTYPES_INCLUDED_
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//
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// Basic type. Arrays, vectors, etc., are orthogonal to this.
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//
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enum TBasicType {
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EbtVoid,
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EbtFloat,
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EbtInt,
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EbtBool,
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EbtGuardSamplerBegin, // non type: see implementation of IsSampler()
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EbtSampler1D,
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EbtSampler2D,
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EbtSampler3D,
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EbtSamplerCube,
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EbtSampler1DShadow,
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EbtSampler2DShadow,
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EbtSamplerRect, // ARB_texture_rectangle
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EbtSamplerRectShadow, // ARB_texture_rectangle
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EbtGuardSamplerEnd, // non type: see implementation of IsSampler()
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EbtStruct,
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EbtAddress, // should be deprecated??
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};
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__inline bool IsSampler(TBasicType type)
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{
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return type > EbtGuardSamplerBegin && type < EbtGuardSamplerEnd;
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}
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//
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// Qualifiers and built-ins. These are mainly used to see what can be read
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// or written, and by the machine dependent translator to know which registers
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// to allocate variables in. Since built-ins tend to go to different registers
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// than varying or uniform, it makes sense they are peers, not sub-classes.
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//
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enum TQualifier {
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EvqTemporary, // For temporaries (within a function), read/write
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EvqGlobal, // For globals read/write
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EvqConst, // User defined constants and non-output parameters in functions
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EvqAttribute, // Readonly
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EvqVaryingIn, // readonly, fragment shaders only
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EvqVaryingOut, // vertex shaders only read/write
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EvqUniform, // Readonly, vertex and fragment
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// parameters
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EvqIn,
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EvqOut,
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EvqInOut,
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EvqConstReadOnly,
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// built-ins written by vertex shader
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EvqPosition,
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EvqPointSize,
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EvqClipVertex,
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// built-ins read by fragment shader
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EvqFace,
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EvqFragCoord,
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// built-ins written by fragment shader
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EvqFragColor,
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EvqFragDepth,
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// end of list
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EvqLast,
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};
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//
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// This is just for debug print out, carried along with the definitions above.
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//
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__inline const char* getQualifierString(TQualifier q)
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{
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switch (q) {
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case EvqTemporary: return "Temporary"; break;
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case EvqGlobal: return "Global"; break;
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case EvqConst: return "const"; break;
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case EvqConstReadOnly: return "const (read only)"; break;
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case EvqAttribute: return "attribute"; break;
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case EvqVaryingIn: return "varying in"; break;
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case EvqVaryingOut: return "varying out"; break;
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case EvqUniform: return "uniform"; break;
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case EvqIn: return "in"; break;
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case EvqOut: return "out"; break;
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case EvqInOut: return "inout"; break;
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case EvqPosition: return "Position"; break;
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case EvqPointSize: return "PointSize"; break;
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case EvqClipVertex: return "ClipVertex"; break;
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case EvqFace: return "Face"; break;
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case EvqFragCoord: return "FragCoord"; break;
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case EvqFragColor: return "FragColor"; break;
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case EvqFragDepth: return "FragDepth"; break;
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default: return "unknown qualifier";
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}
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}
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#endif // _BASICTYPES_INCLUDED_
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