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Merge pull request #1037 from LoopDawg/clip-cull-geom

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HLSL: add geometry stage support for clip/cull distance
This commit is contained in:
John Kessenich
2017-08-31 12:36:06 -06:00
committed by GitHub
parent a459fc8142 5e5b12e931
commit 75e057f980
13 changed files with 3448 additions and 204 deletions
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183
hlsl/hlslParseHelper.cpp
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@@ -66,8 +66,10 @@ HlslParseContext::HlslParseContext(TSymbolTable& symbolTable, TIntermediate& int
entryPointFunction(nullptr),
entryPointFunctionBody(nullptr),
gsStreamOutput(nullptr),
clipDistanceVariable(nullptr),
cullDistanceVariable(nullptr)
clipDistanceInput(nullptr),
cullDistanceInput(nullptr),
clipDistanceOutput(nullptr),
cullDistanceOutput(nullptr)
{
globalUniformDefaults.clear();
globalUniformDefaults.layoutMatrix = ElmRowMajor;
@@ -80,8 +82,10 @@ HlslParseContext::HlslParseContext(TSymbolTable& symbolTable, TIntermediate& int
globalInputDefaults.clear();
globalOutputDefaults.clear();
clipSemanticNSize.fill(0);
cullSemanticNSize.fill(0);
clipSemanticNSizeIn.fill(0);
cullSemanticNSizeIn.fill(0);
clipSemanticNSizeOut.fill(0);
cullSemanticNSizeOut.fill(0);
// "Shaders in the transform
// feedback capturing mode have an initial global default of
@@ -1152,14 +1156,18 @@ void HlslParseContext::splitBuiltIn(const TString& baseName, const TType& member
if (arraySizes != nullptr && !memberType.isArray())
ioVar->getWritableType().newArraySizes(*arraySizes);
fixBuiltInIoType(ioVar->getWritableType());
splitBuiltIns[tInterstageIoData(memberType.getQualifier().builtIn, outerQualifier.storage)] = ioVar;
if (!isClipOrCullDistance(ioVar->getType()))
trackLinkage(*ioVar);
// Merge qualifier from the user structure
mergeQualifiers(ioVar->getWritableType().getQualifier(), outerQualifier);
// Fix the builtin type if needed (e.g, some types require fixed array sizes, no matter how the
// shader declared them). This is done after mergeQualifiers(), in case fixBuiltInIoType looks
// at the qualifier to determine e.g, in or out qualifications.
fixBuiltInIoType(ioVar->getWritableType());
// But, not location, we're losing that
ioVar->getWritableType().getQualifier().layoutLocation = TQualifier::layoutLocationEnd;
}
@@ -1483,10 +1491,18 @@ void HlslParseContext::fixBuiltInIoType(TType& type)
}
default:
if (isClipOrCullDistance(type)) {
const int loc = type.getQualifier().layoutLocation;
if (type.getQualifier().builtIn == EbvClipDistance) {
clipSemanticNSize[type.getQualifier().layoutLocation] = type.getVectorSize();
if (type.getQualifier().storage == EvqVaryingIn)
clipSemanticNSizeIn[loc] = type.getVectorSize();
else
clipSemanticNSizeOut[loc] = type.getVectorSize();
} else {
cullSemanticNSize[type.getQualifier().layoutLocation] = type.getVectorSize();
if (type.getQualifier().storage == EvqVaryingIn)
cullSemanticNSizeIn[loc] = type.getVectorSize();
else
cullSemanticNSizeOut[loc] = type.getVectorSize();
}
}
@@ -2274,6 +2290,7 @@ TIntermAggregate* HlslParseContext::assignClipCullDistance(const TSourceLoc& loc
switch (language) {
case EShLangFragment:
case EShLangVertex:
case EShLangGeometry:
break;
default:
error(loc, "unimplemented: clip/cull not currently implemented for this stage", "", "");
@@ -2292,17 +2309,17 @@ TIntermAggregate* HlslParseContext::assignClipCullDistance(const TSourceLoc& loc
const TBuiltInVariable builtInType = clipCullNode->getQualifier().builtIn;
decltype(clipSemanticNSize)* semanticNSize = nullptr;
decltype(clipSemanticNSizeIn)* semanticNSize = nullptr;
// Refer to either the clip or the cull distance, depending on semantic.
switch (builtInType) {
case EbvClipDistance:
clipCullVar = &clipDistanceVariable;
semanticNSize = &clipSemanticNSize;
clipCullVar = isOutput ? &clipDistanceOutput : &clipDistanceInput;
semanticNSize = isOutput ? &clipSemanticNSizeOut : &clipSemanticNSizeIn;
break;
case EbvCullDistance:
clipCullVar = &cullDistanceVariable;
semanticNSize = &cullSemanticNSize;
clipCullVar = isOutput ? &cullDistanceOutput : &cullDistanceInput;
semanticNSize = isOutput ? &cullSemanticNSizeOut : &cullSemanticNSizeIn;
break;
// called invalidly: we expected a clip or a cull distance.
@@ -2328,28 +2345,48 @@ TIntermAggregate* HlslParseContext::assignClipCullDistance(const TSourceLoc& loc
vecItems += (*semanticNSize)[x];
arrayLoc += (*semanticNSize)[x];
}
// array sizes, or 1 if it's not an array:
const int internalNodeArraySize = (internalNode->getType().isArray() ? internalNode->getType().getOuterArraySize() : 1);
// It can have up to 2 array dimensions (in the case of geometry shader inputs)
const TArraySizes* const internalArraySizes = internalNode->getType().getArraySizes();
const int internalArrayDims = internalNode->getType().isArray() ? internalArraySizes->getNumDims() : 0;
// vector sizes:
const int internalNodeVectorSize = internalNode->getType().getVectorSize();
const int internalVectorSize = internalNode->getType().getVectorSize();
// array sizes, or 1 if it's not an array:
const int internalInnerArraySize = (internalArrayDims > 0 ? internalArraySizes->getDimSize(internalArrayDims-1) : 1);
const int internalOuterArraySize = (internalArrayDims > 1 ? internalArraySizes->getDimSize(0) : 1);
// The created type may be an array of arrays, e.g, for geometry shader inputs.
const bool isImplicitlyArrayed = (language == EShLangGeometry && !isOutput);
// If we haven't created the output already, create it now.
if (*clipCullVar == nullptr) {
// ClipDistance and CullDistance are handled specially in the entry point input/output copy
// algorithm, because they may need to be unpacked from components of vectors (or a scalar)
// into a float array, or vice versa. Here, we make the array the right size and type,
// which depends on the incoming data, which has several potential dimensions: Semantic ID
// vector size array size Of those, semantic ID and array size cannot appear
// simultaneously.
const int requiredArraySize = arrayLoc * internalNodeArraySize;
// which depends on the incoming data, which has several potential dimensions:
// * Semantic ID
// * vector size
// * array size
// Of those, semantic ID and array size cannot appear simultaneously.
//
// Also to note: for implicitly arrayed forms (e.g, geometry shader inputs), we need to create two
// array dimensions. The shader's declaration may have one or two array dimensions. One is always
// the geometry's dimension.
const bool useInnerSize = internalArrayDims > 1 || !isImplicitlyArrayed;
const int requiredInnerArraySize = arrayLoc * (useInnerSize ? internalInnerArraySize : 1);
const int requiredOuterArraySize = (internalArrayDims > 0) ? internalArraySizes->getDimSize(0) : 1;
TType clipCullType(EbtFloat, clipCullNode->getType().getQualifier().storage, 1);
clipCullType.getQualifier() = clipCullNode->getType().getQualifier();
// Create required array dimension
TArraySizes arraySizes;
arraySizes.addInnerSize(requiredArraySize);
if (isImplicitlyArrayed)
arraySizes.addInnerSize(requiredOuterArraySize);
arraySizes.addInnerSize(requiredInnerArraySize);
clipCullType.newArraySizes(arraySizes);
// Obtain symbol name: we'll use that for the symbol we introduce.
@@ -2369,10 +2406,13 @@ TIntermAggregate* HlslParseContext::assignClipCullDistance(const TSourceLoc& loc
// Create symbol for the clip or cull variable.
TIntermSymbol* clipCullSym = intermediate.addSymbol(**clipCullVar);
// array sizes, or 1 if it's not an array:
const int clipCullSymArraySize = (clipCullSym->getType().isArray() ? clipCullSym->getType().getOuterArraySize() : 1);
// vector sizes:
const int clipCullSymVectorSize = clipCullSym->getType().getVectorSize();
const int clipCullVectorSize = clipCullSym->getType().getVectorSize();
// array sizes, or 1 if it's not an array:
const TArraySizes* const clipCullArraySizes = clipCullSym->getType().getArraySizes();
const int clipCullOuterArraySize = isImplicitlyArrayed ? clipCullArraySizes->getDimSize(0) : 1;
const int clipCullInnerArraySize = clipCullArraySizes->getDimSize(isImplicitlyArrayed ? 1 : 0);
// clipCullSym has got to be an array of scalar floats, per SPIR-V semantics.
// fixBuiltInIoType() should have handled that upstream.
@@ -2390,8 +2430,9 @@ TIntermAggregate* HlslParseContext::assignClipCullDistance(const TSourceLoc& loc
// If the types are homomorphic, use a simple assign. No need to mess about with
// individual components.
if (clipCullSym->getType().isArray() == internalNode->getType().isArray() &&
clipCullSymArraySize == internalNodeArraySize &&
clipCullSymVectorSize == internalNodeVectorSize) {
clipCullInnerArraySize == internalInnerArraySize &&
clipCullOuterArraySize == internalOuterArraySize &&
clipCullVectorSize == internalVectorSize) {
if (isOutput)
clipCullAssign = intermediate.addAssign(op, clipCullSym, internalNode, loc);
@@ -2407,47 +2448,61 @@ TIntermAggregate* HlslParseContext::assignClipCullDistance(const TSourceLoc& loc
// We are going to copy each component of the internal (per array element if indicated) to sequential
// array elements of the clipCullSym. This tracks the lhs element we're writing to as we go along.
// We may be starting in the middle - e.g, for a non-zero semantic ID calculated above.
int clipCullArrayPos = semanticOffset[semanticId];
int clipCullInnerArrayPos = semanticOffset[semanticId];
int clipCullOuterArrayPos = 0;
// Lambda to add an index to a node, set the type of the result, and return the new node.
const auto addIndex = [this, &loc](TIntermTyped* node, int pos) -> TIntermTyped* {
const TType derefType(node->getType(), 0);
node = intermediate.addIndex(EOpIndexDirect, node, intermediate.addConstantUnion(pos, loc), loc);
node->setType(derefType);
return node;
};
// Loop through every component of every element of the internal, and copy to or from the matching external.
for (int internalArrayPos = 0; internalArrayPos < internalNodeArraySize; ++internalArrayPos) {
for (int internalComponent = 0; internalComponent < internalNodeVectorSize; ++internalComponent) {
TIntermTyped* clipCullMember = clipCullSym;
for (int internalOuterArrayPos = 0; internalOuterArrayPos < internalOuterArraySize; ++internalOuterArrayPos) {
for (int internalInnerArrayPos = 0; internalInnerArrayPos < internalInnerArraySize; ++internalInnerArrayPos) {
for (int internalComponent = 0; internalComponent < internalVectorSize; ++internalComponent) {
// clip/cull array member to read from / write to:
TIntermTyped* clipCullMember = clipCullSym;
// array member to read from / write to:
{
const TType derefType(clipCullMember->getType(), 0);
clipCullMember = intermediate.addIndex(EOpIndexDirect, clipCullMember,
intermediate.addConstantUnion(clipCullArrayPos++, loc), loc);
clipCullMember->setType(derefType);
// If implicitly arrayed, there is an outer array dimension involved
if (isImplicitlyArrayed)
clipCullMember = addIndex(clipCullMember, clipCullOuterArrayPos);
// Index into proper array position for clip cull member
clipCullMember = addIndex(clipCullMember, clipCullInnerArrayPos++);
// if needed, start over with next outer array slice.
if (isImplicitlyArrayed && clipCullInnerArrayPos >= clipCullInnerArraySize) {
clipCullInnerArrayPos = semanticOffset[semanticId];
++clipCullOuterArrayPos;
}
// internal member to read from / write to:
TIntermTyped* internalMember = internalNode;
// If internal node has outer array dimension, index appropriately.
if (internalArrayDims > 1)
internalMember = addIndex(internalMember, internalOuterArrayPos);
// If internal node has inner array dimension, index appropriately.
if (internalArrayDims > 0)
internalMember = addIndex(internalMember, internalInnerArrayPos);
// If internal node is a vector, extract the component of interest.
if (internalNode->getType().isVector())
internalMember = addIndex(internalMember, internalComponent);
// Create an assignment: output from internal to clip cull, or input from clip cull to internal.
if (isOutput)
clipCullAssign = intermediate.addAssign(op, clipCullMember, internalMember, loc);
else
clipCullAssign = intermediate.addAssign(op, internalMember, clipCullMember, loc);
// Track assignment in the sequence.
assignList = intermediate.growAggregate(assignList, clipCullAssign);
}
TIntermTyped* internalMember = internalNode;
// If internal node is an array, extract the element of interest
if (internalNode->getType().isArray()) {
const TType derefType(internalMember->getType(), 0);
internalMember = intermediate.addIndex(EOpIndexDirect, internalMember,
intermediate.addConstantUnion(internalArrayPos, loc), loc);
internalMember->setType(derefType);
}
// If internal node is a vector, extract the component of interest.
if (internalNode->getType().isVector()) {
const TType derefType(internalMember->getType(), 0);
internalMember = intermediate.addIndex(EOpIndexDirect, internalMember,
intermediate.addConstantUnion(internalComponent, loc), loc);
internalMember->setType(derefType);
}
// Create an assignment: output from internal to clip cull, or input from clip cull to internal.
if (isOutput)
clipCullAssign = intermediate.addAssign(op, clipCullMember, internalMember, loc);
else
clipCullAssign = intermediate.addAssign(op, internalMember, clipCullMember, loc);
// Track assignment in the sequence.
assignList = intermediate.growAggregate(assignList, clipCullAssign);
}
}