GeometryShader::GeometryShader(const CompiledShaderByteCode& compiledShader, const StreamOutputInitializers& soInitializers)
{
if (compiledShader.GetStage() != ShaderStage::Null) {
assert(compiledShader.GetStage() == ShaderStage::Geometry);
auto byteCode = compiledShader.GetByteCode();
intrusive_ptr<ID3D::GeometryShader> underlying;
if (soInitializers._outputBufferCount == 0) {
underlying = ObjectFactory().CreateGeometryShader(byteCode.first, byteCode.second);
} else {
assert(soInitializers._outputBufferCount <= D3D11_SO_BUFFER_SLOT_COUNT);
D3D11_SO_DECLARATION_ENTRY nativeDeclaration[D3D11_SO_STREAM_COUNT * D3D11_SO_OUTPUT_COMPONENT_COUNT];
auto delcCount = BuildNativeDeclaration(nativeDeclaration, dimof(nativeDeclaration), soInitializers);
ObjectFactory objFactory;
auto featureLevel = objFactory.GetUnderlying()->GetFeatureLevel();
underlying = objFactory.CreateGeometryShaderWithStreamOutput(
byteCode.first, byteCode.second,
nativeDeclaration, delcCount,
soInitializers._outputBufferStrides, soInitializers._outputBufferCount,
// Note -- "NO_RASTERIZED_STREAM" is only supported on feature level 11. For other feature levels
// we must disable the rasterization step some other way
(featureLevel>=D3D_FEATURE_LEVEL_11_0)?D3D11_SO_NO_RASTERIZED_STREAM:0);
}
_underlying = std::move(underlying);
}
}
GeometryShader::GeometryShader( const ResChar initializer[],
const StreamOutputInitializers& soInitializers)
{
//
// We have to append the shader model to the resource name
// (if it's not already there)
//
ResChar temp[MaxPath];
if (!XlFindStringI(initializer, "gs_")) {
StringMeldInPlace(temp) << initializer << ":" GS_DefShaderModel;
initializer = temp;
}
intrusive_ptr<ID3D::GeometryShader> underlying;
if (soInitializers._outputBufferCount == 0) {
const auto& compiledShader = ::Assets::GetAssetComp<CompiledShaderByteCode>(initializer);
assert(compiledShader.GetStage() == ShaderStage::Geometry);
auto byteCode = compiledShader.GetByteCode();
underlying = ObjectFactory().CreateGeometryShader(byteCode.first, byteCode.second);
} else {
assert(soInitializers._outputBufferCount < D3D11_SO_BUFFER_SLOT_COUNT);
D3D11_SO_DECLARATION_ENTRY nativeDeclaration[D3D11_SO_STREAM_COUNT * D3D11_SO_OUTPUT_COMPONENT_COUNT];
auto delcCount = BuildNativeDeclaration(nativeDeclaration, dimof(nativeDeclaration), soInitializers);
ObjectFactory objFactory;
auto featureLevel = objFactory.GetUnderlying()->GetFeatureLevel();
const auto& compiledShader = ::Assets::GetAssetComp<CompiledShaderByteCode>(initializer);
assert(compiledShader.GetStage() == ShaderStage::Geometry);
auto byteCode = compiledShader.GetByteCode();
underlying = objFactory.CreateGeometryShaderWithStreamOutput(
byteCode.first, byteCode.second,
nativeDeclaration, delcCount,
soInitializers._outputBufferStrides, soInitializers._outputBufferCount,
// Note -- "NO_RASTERIZED_STREAM" is only supported on feature level 11. For other feature levels
// we must disable the rasterization step some other way
(featureLevel>=D3D_FEATURE_LEVEL_11_0)?D3D11_SO_NO_RASTERIZED_STREAM:0);
}
// (creation successful; we can commit to member now)
_underlying = std::move(underlying);
}
