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Shader: Fix SPIRV generation

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This commit is contained in:
Jérôme Leclercq
2021-03-11 17:50:11 +01:00
parent fed7370e77
commit 48b93a9dea
8 changed files with 78 additions and 61 deletions
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89
src/Nazara/Shader/SpirvWriter.cpp
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@@ -31,6 +31,7 @@ namespace Nz
public:
using ExtInstList = std::unordered_set<std::string>;
using LocalContainer = std::unordered_set<ShaderAst::ShaderExpressionType>;
using FunctionContainer = std::vector<std::reference_wrapper<ShaderAst::DeclareFunctionStatement>>;
PreVisitor(ShaderAst::AstCache* cache, const SpirvWriter::States& conditions, SpirvConstantCache& constantCache) :
m_cache(cache),
@@ -79,9 +80,15 @@ namespace Nz
void Visit(ShaderAst::DeclareFunctionStatement& node) override
{
m_constantCache.Register(*SpirvConstantCache::BuildType(node.returnType));
funcs.emplace_back(node);
std::vector<ShaderAst::ShaderExpressionType> parameterTypes;
for (auto& parameter : node.parameters)
m_constantCache.Register(*SpirvConstantCache::BuildType(parameter.type));
parameterTypes.push_back(parameter.type);
m_constantCache.Register(*SpirvConstantCache::BuildFunctionType(node.returnType, parameterTypes));
AstRecursiveVisitor::Visit(node);
}
void Visit(ShaderAst::DeclareStructStatement& node) override
@@ -92,14 +99,14 @@ namespace Nz
void Visit(ShaderAst::DeclareVariableStatement& node) override
{
variableTypes.insert(node.varType);
m_constantCache.Register(*SpirvConstantCache::BuildType(node.varType));
AstRecursiveVisitor::Visit(node);
}
void Visit(ShaderAst::IdentifierExpression& node) override
{
variableTypes.insert(GetExpressionType(node, m_cache));
m_constantCache.Register(*SpirvConstantCache::BuildType(GetExpressionType(node, m_cache)));
AstRecursiveVisitor::Visit(node);
}
@@ -122,7 +129,7 @@ namespace Nz
}
ExtInstList extInsts;
LocalContainer variableTypes;
FunctionContainer funcs;
private:
ShaderAst::AstCache* m_cache;
@@ -210,8 +217,6 @@ namespace Nz
m_currentState = nullptr;
});
std::vector<ShaderAst::StatementPtr> functionStatements;
ShaderAst::AstCloner cloner;
// Register all extended instruction sets
@@ -345,26 +350,22 @@ namespace Nz
state.annotations.Append(SpirvOp::OpDecorate, varId, SpirvDecoration::Binding, *uniform.bindingIndex);
state.annotations.Append(SpirvOp::OpDecorate, varId, SpirvDecoration::DescriptorSet, 0);
}
}
}*/
for (const auto& func : shader.GetFunctions())
for (const ShaderAst::DeclareFunctionStatement& func : preVisitor.funcs)
{
auto& funcData = state.funcs.emplace_back();
funcData.id = AllocateResultId();
funcData.typeId = GetFunctionTypeId(func.returnType, func.parameters);
funcData.typeId = GetFunctionTypeId(func);
state.debugInfo.Append(SpirvOp::OpName, funcData.id, func.name);
}
std::size_t entryPointIndex = std::numeric_limits<std::size_t>::max();
std::size_t funcIndex = 0;
for (std::size_t funcIndex = 0; funcIndex < shader.GetFunctionCount(); ++funcIndex)
for (const ShaderAst::DeclareFunctionStatement& func : preVisitor.funcs)
{
const auto& func = shader.GetFunction(funcIndex);
if (func.name == "main")
entryPointIndex = funcIndex;
auto& funcData = state.funcs[funcIndex];
auto& funcData = state.funcs[funcIndex++];
state.instructions.Append(SpirvOp::OpFunction, GetTypeId(func.returnType), funcData.id, 0, funcData.typeId);
@@ -386,8 +387,9 @@ namespace Nz
state.parameterIds.emplace(param.name, std::move(parameterData));
}
SpirvAstVisitor visitor(*this, state.functionBlocks);
visitor.Visit(functionStatements[funcIndex]);
SpirvAstVisitor visitor(*this, state.functionBlocks, &m_context.cache);
for (const auto& statement : func.statements)
statement->Visit(visitor);
if (!state.functionBlocks.back().IsTerminated())
{
@@ -405,7 +407,7 @@ namespace Nz
AppendHeader();
if (entryPointIndex != std::numeric_limits<std::size_t>::max())
/*if (entryPointIndex != std::numeric_limits<std::size_t>::max())
{
SpvExecutionModel execModel;
const auto& entryFuncData = shader.GetFunction(entryPointIndex);
@@ -415,11 +417,11 @@ namespace Nz
switch (m_context.shader->GetStage())
{
case ShaderStageType::Fragment:
execModel = SpvExecutionModelFragment;
execModel = SpirvExecutionModel::Fragment;
break;
case ShaderStageType::Vertex:
execModel = SpvExecutionModelVertex;
execModel = SpirvExecutionModel::Vertex;
break;
default:
@@ -445,15 +447,15 @@ namespace Nz
});
if (m_context.shader->GetStage() == ShaderStageType::Fragment)
state.header.Append(SpirvOp::OpExecutionMode, entryFunc.id, SpvExecutionModeOriginUpperLeft);
state.header.Append(SpirvOp::OpExecutionMode, entryFunc.id, SpirvExecutionMode::OriginUpperLeft);
}*/
std::vector<UInt32> ret;
/*MergeSections(ret, state.header);
MergeSections(ret, state.header);
MergeSections(ret, state.debugInfo);
MergeSections(ret, state.annotations);
MergeSections(ret, state.constants);
MergeSections(ret, state.instructions);*/
MergeSections(ret, state.instructions);
return ret;
}
@@ -479,26 +481,12 @@ namespace Nz
m_currentState->header.AppendRaw(m_currentState->nextVarIndex); //< Bound (ID count)
m_currentState->header.AppendRaw(0); //< Instruction schema (required to be 0 for now)
m_currentState->header.Append(SpirvOp::OpCapability, SpvCapabilityShader);
m_currentState->header.Append(SpirvOp::OpCapability, SpirvCapability::Shader);
for (const auto& [extInst, resultId] : m_currentState->extensionInstructions)
m_currentState->header.Append(SpirvOp::OpExtInstImport, resultId, extInst);
m_currentState->header.Append(SpirvOp::OpMemoryModel, SpvAddressingModelLogical, SpvMemoryModelGLSL450);
}
SpirvConstantCache::Function SpirvWriter::BuildFunctionType(ShaderAst::ShaderExpressionType retType, const std::vector<FunctionParameter>& parameters)
{
std::vector<SpirvConstantCache::TypePtr> parameterTypes;
parameterTypes.reserve(parameters.size());
for (const auto& parameter : parameters)
parameterTypes.push_back(SpirvConstantCache::BuildPointerType(parameter.type, SpirvStorageClass::Function));
return SpirvConstantCache::Function{
SpirvConstantCache::BuildType(retType),
std::move(parameterTypes)
};
m_currentState->header.Append(SpirvOp::OpMemoryModel, SpirvAddressingModel::Logical, SpirvMemoryModel::GLSL450);
}
UInt32 SpirvWriter::GetConstantId(const ShaderConstantValue& value) const
@@ -506,9 +494,9 @@ namespace Nz
return m_currentState->constantTypeCache.GetId(*SpirvConstantCache::BuildConstant(value));
}
UInt32 SpirvWriter::GetFunctionTypeId(ShaderAst::ShaderExpressionType retType, const std::vector<FunctionParameter>& parameters)
UInt32 SpirvWriter::GetFunctionTypeId(const ShaderAst::DeclareFunctionStatement& functionNode)
{
return m_currentState->constantTypeCache.GetId({ BuildFunctionType(retType, parameters) });
return m_currentState->constantTypeCache.GetId({ *BuildFunctionType(functionNode) });
}
auto SpirvWriter::GetBuiltinVariable(ShaderAst::BuiltinEntry builtin) const -> const ExtVar&
@@ -644,9 +632,9 @@ namespace Nz
return m_currentState->constantTypeCache.Register(*SpirvConstantCache::BuildConstant(value));
}
UInt32 SpirvWriter::RegisterFunctionType(ShaderAst::ShaderExpressionType retType, const std::vector<FunctionParameter>& parameters)
UInt32 SpirvWriter::RegisterFunctionType(const ShaderAst::DeclareFunctionStatement& functionNode)
{
return m_currentState->constantTypeCache.Register({ BuildFunctionType(retType, parameters) });
return m_currentState->constantTypeCache.Register({ *BuildFunctionType(functionNode) });
}
UInt32 SpirvWriter::RegisterPointerType(ShaderAst::ShaderExpressionType type, SpirvStorageClass storageClass)
@@ -666,6 +654,17 @@ namespace Nz
m_currentState->varToResult.insert_or_assign(std::move(name), resultId);
}
SpirvConstantCache::TypePtr SpirvWriter::BuildFunctionType(const ShaderAst::DeclareFunctionStatement& functionNode)
{
std::vector<ShaderAst::ShaderExpressionType> parameterTypes;
parameterTypes.reserve(functionNode.parameters.size());
for (const auto& parameter : functionNode.parameters)
parameterTypes.push_back(parameter.type);
return SpirvConstantCache::BuildFunctionType(functionNode.returnType, parameterTypes);
}
void SpirvWriter::MergeSections(std::vector<UInt32>& output, const SpirvSection& from)
{
const std::vector<UInt32>& bytecode = from.GetBytecode();