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//
// Copyright 2016 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// GlslangWrapperVk: Wrapper for Vulkan's glslang compiler.
//
#include "libANGLE/renderer/vulkan/GlslangWrapperVk.h"
#include "libANGLE/renderer/vulkan/ContextVk.h"
#include "libANGLE/renderer/vulkan/vk_cache_utils.h"
namespace rx
{
// static
GlslangSourceOptions GlslangWrapperVk::CreateSourceOptions(const angle::FeaturesVk &features)
{
GlslangSourceOptions options;
options.supportsTransformFeedbackExtension =
features.supportsTransformFeedbackExtension.enabled;
options.supportsTransformFeedbackEmulation = features.emulateTransformFeedback.enabled;
options.enableTransformFeedbackEmulation = options.supportsTransformFeedbackEmulation;
return options;
}
// static
void GlslangWrapperVk::ResetGlslangProgramInterfaceInfo(
GlslangProgramInterfaceInfo *glslangProgramInterfaceInfo)
{
glslangProgramInterfaceInfo->uniformsAndXfbDescriptorSetIndex =
ToUnderlying(DescriptorSetIndex::UniformsAndXfb);
glslangProgramInterfaceInfo->currentUniformBindingIndex = 0;
glslangProgramInterfaceInfo->textureDescriptorSetIndex =
ToUnderlying(DescriptorSetIndex::Texture);
glslangProgramInterfaceInfo->currentTextureBindingIndex = 0;
glslangProgramInterfaceInfo->shaderResourceDescriptorSetIndex =
ToUnderlying(DescriptorSetIndex::ShaderResource);
glslangProgramInterfaceInfo->currentShaderResourceBindingIndex = 0;
// TODO (https://anglebug.com/6858): driverUniformsDescriptorSetIndex is no longer used in
// Vulkan. It can be removed altogether if Metal discontinues using it as well.
glslangProgramInterfaceInfo->driverUniformsDescriptorSetIndex =
ToUnderlying(DescriptorSetIndex::Internal);
glslangProgramInterfaceInfo->locationsUsedForXfbExtension = 0;
}
// static
void GlslangWrapperVk::GetShaderCode(const gl::Context *context,
const angle::FeaturesVk &features,
const gl::ProgramState &programState,
const gl::ProgramLinkedResources &resources,
GlslangProgramInterfaceInfo *programInterfaceInfo,
gl::ShaderMap<const angle::spirv::Blob *> *spirvBlobsOut,
ShaderInterfaceVariableInfoMap *variableInfoMapOut)
{
GlslangSourceOptions options = CreateSourceOptions(features);
GlslangGetShaderSpirvCode(context, options, programState, resources, programInterfaceInfo,
spirvBlobsOut, variableInfoMapOut);
}
// static
angle::Result GlslangWrapperVk::TransformSpirV(
const GlslangSpirvOptions &options,
const ShaderInterfaceVariableInfoMap &variableInfoMap,
const angle::spirv::Blob &initialSpirvBlob,
angle::spirv::Blob *shaderCodeOut)
{
return GlslangTransformSpirvCode(options, variableInfoMap, initialSpirvBlob, shaderCodeOut);
}
} // namespace rx