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WIP: HLSL: structuredbuffer counter functionality

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This is WIP, heavy on the IP part.  There's not yet enough to use in real workloads.

Currently present:

* Creation of separate counter buffers for structured buffer types needing them.
* IncrementCounter / DecrementCounter methods
* Postprocess to remove unused counter buffers from linkage
* Associated counter buffers are given @count suffix (invalid as a user identifier)

Not yet present:

* reflection queries to obtain bindings for counter buffers
* Append/Consume buffers
* Ability to use SB references passed as fn parameters
This commit is contained in:
steve-lunarg
2017-04-10 08:19:21 -06:00
parent d1141843c0
commit 8e26feb8f2
9 changed files with 520 additions and 24 deletions
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21
hlsl/hlslGrammar.cpp
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@@ -475,9 +475,10 @@ bool HlslGrammar::acceptDeclaration(TIntermNode*& nodeList)
if (variableType.getBasicType() != EbtString && parseContext.getAnnotationNestingLevel() == 0) {
if (typedefDecl)
parseContext.declareTypedef(idToken.loc, *fullName, variableType);
else if (variableType.getBasicType() == EbtBlock)
else if (variableType.getBasicType() == EbtBlock) {
parseContext.declareBlock(idToken.loc, variableType, fullName);
else {
parseContext.declareStructBufferCounter(idToken.loc, variableType, *fullName);
} else {
if (variableType.getQualifier().storage == EvqUniform && ! variableType.containsOpaque()) {
// this isn't really an individual variable, but a member of the $Global buffer
parseContext.growGlobalUniformBlock(idToken.loc, variableType, *fullName);
@@ -1955,24 +1956,29 @@ bool HlslGrammar::acceptStructBufferType(TType& type)
bool readonly = false;
TStorageQualifier storage = EvqBuffer;
TBuiltInVariable builtinType = EbvNone;
switch (structBuffType) {
case EHTokAppendStructuredBuffer:
unimplemented("AppendStructuredBuffer");
return false;
builtinType = EbvAppendConsume;
break;
case EHTokByteAddressBuffer:
hasTemplateType = false;
readonly = true;
builtinType = EbvByteAddressBuffer;
break;
case EHTokConsumeStructuredBuffer:
unimplemented("ConsumeStructuredBuffer");
return false;
builtinType = EbvAppendConsume;
break;
case EHTokRWByteAddressBuffer:
hasTemplateType = false;
builtinType = EbvRWByteAddressBuffer;
break;
case EHTokRWStructuredBuffer:
builtinType = EbvRWStructuredBuffer;
break;
case EHTokStructuredBuffer:
builtinType = EbvStructuredBuffer;
readonly = true;
break;
default:
@@ -2014,8 +2020,6 @@ bool HlslGrammar::acceptStructBufferType(TType& type)
// field name is canonical for all structbuffers
templateType->setFieldName("@data");
// Create block type. TODO: hidden internal uint member when needed
TTypeList* blockStruct = new TTypeList;
TTypeLoc member = { templateType, token.loc };
blockStruct->push_back(member);
@@ -2025,6 +2029,7 @@ bool HlslGrammar::acceptStructBufferType(TType& type)
blockType.getQualifier().storage = storage;
blockType.getQualifier().readonly = readonly;
blockType.getQualifier().builtIn = builtinType;
// We may have created an equivalent type before, in which case we should use its
// deep structure.