src/libANGLE/MemoryProgramCache.cpp - platform/external/angle - Gitiles

 //
 // Copyright 2017 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.
 //
 // MemoryProgramCache: Stores compiled and linked programs in memory so they don't
 //   always have to be re-compiled. Can be used in conjunction with the platform
 //   layer to warm up the cache from disk.

 #include "libANGLE/MemoryProgramCache.h"

 #include <GLSLANG/ShaderVars.h>

 #include "common/version.h"
 #include "libANGLE/BinaryStream.h"
 #include "libANGLE/Context.h"
 #include "libANGLE/Uniform.h"
 #include "libANGLE/renderer/ProgramImpl.h"

 namespace gl
 {

 namespace
 {

 void WriteShaderVar(BinaryOutputStream *stream, const sh::ShaderVariable &var)
 {
     stream->writeInt(var.type);
     stream->writeInt(var.precision);
     stream->writeString(var.name);
     stream->writeString(var.mappedName);
     stream->writeInt(var.arraySize);
     stream->writeInt(var.staticUse);
     stream->writeString(var.structName);
     ASSERT(var.fields.empty());
 }

 void LoadShaderVar(BinaryInputStream *stream, sh::ShaderVariable *var)
 {
     var->type       = stream->readInt<GLenum>();
     var->precision  = stream->readInt<GLenum>();
     var->name       = stream->readString();
     var->mappedName = stream->readString();
     var->arraySize  = stream->readInt<unsigned int>();
     var->staticUse  = stream->readBool();
     var->structName = stream->readString();
 }

 }  // anonymous namespace

 // static
 LinkResult MemoryProgramCache::Deserialize(const Context *context,
                                            const Program *program,
                                            ProgramState *state,
                                            const uint8_t *binary,
                                            size_t length,
                                            InfoLog &infoLog)
 {
     BinaryInputStream stream(binary, length);

     unsigned char commitString[ANGLE_COMMIT_HASH_SIZE];
     stream.readBytes(commitString, ANGLE_COMMIT_HASH_SIZE);
     if (memcmp(commitString, ANGLE_COMMIT_HASH, sizeof(unsigned char) * ANGLE_COMMIT_HASH_SIZE) !=
         0)
     {
         infoLog << "Invalid program binary version.";
         return false;
     }

     int majorVersion = stream.readInt<int>();
     int minorVersion = stream.readInt<int>();
     if (majorVersion != context->getClientMajorVersion() ||
         minorVersion != context->getClientMinorVersion())
     {
         infoLog << "Cannot load program binaries across different ES context versions.";
         return false;
     }

     state->mComputeShaderLocalSize[0] = stream.readInt<int>();
     state->mComputeShaderLocalSize[1] = stream.readInt<int>();
     state->mComputeShaderLocalSize[2] = stream.readInt<int>();

     static_assert(MAX_VERTEX_ATTRIBS <= sizeof(unsigned long) * 8,
                   "Too many vertex attribs for mask");
     state->mActiveAttribLocationsMask = stream.readInt<unsigned long>();

     unsigned int attribCount = stream.readInt<unsigned int>();
     ASSERT(state->mAttributes.empty());
     for (unsigned int attribIndex = 0; attribIndex < attribCount; ++attribIndex)
     {
         sh::Attribute attrib;
         LoadShaderVar(&stream, &attrib);
         attrib.location = stream.readInt<int>();
         state->mAttributes.push_back(attrib);
     }

     unsigned int uniformCount = stream.readInt<unsigned int>();
     ASSERT(state->mUniforms.empty());
     for (unsigned int uniformIndex = 0; uniformIndex < uniformCount; ++uniformIndex)
     {
         LinkedUniform uniform;
         LoadShaderVar(&stream, &uniform);

         uniform.blockIndex                 = stream.readInt<int>();
         uniform.blockInfo.offset           = stream.readInt<int>();
         uniform.blockInfo.arrayStride      = stream.readInt<int>();
         uniform.blockInfo.matrixStride     = stream.readInt<int>();
         uniform.blockInfo.isRowMajorMatrix = stream.readBool();

         state->mUniforms.push_back(uniform);
     }

     const unsigned int uniformIndexCount = stream.readInt<unsigned int>();
     ASSERT(state->mUniformLocations.empty());
     for (unsigned int uniformIndexIndex = 0; uniformIndexIndex < uniformIndexCount;
          uniformIndexIndex++)
     {
         VariableLocation variable;
         stream.readString(&variable.name);
         stream.readInt(&variable.element);
         stream.readInt(&variable.index);
         stream.readBool(&variable.used);
         stream.readBool(&variable.ignored);

         state->mUniformLocations.push_back(variable);
     }

     unsigned int uniformBlockCount = stream.readInt<unsigned int>();
     ASSERT(state->mUniformBlocks.empty());
     for (unsigned int uniformBlockIndex = 0; uniformBlockIndex < uniformBlockCount;
          ++uniformBlockIndex)
     {
         UniformBlock uniformBlock;
         stream.readString(&uniformBlock.name);
         stream.readBool(&uniformBlock.isArray);
         stream.readInt(&uniformBlock.arrayElement);
         stream.readInt(&uniformBlock.binding);
         stream.readInt(&uniformBlock.dataSize);
         stream.readBool(&uniformBlock.vertexStaticUse);
         stream.readBool(&uniformBlock.fragmentStaticUse);

         unsigned int numMembers = stream.readInt<unsigned int>();
         for (unsigned int blockMemberIndex = 0; blockMemberIndex < numMembers; blockMemberIndex++)
         {
             uniformBlock.memberUniformIndexes.push_back(stream.readInt<unsigned int>());
         }

         state->mUniformBlocks.push_back(uniformBlock);
     }

     for (GLuint bindingIndex = 0; bindingIndex < state->mUniformBlockBindings.size();
          ++bindingIndex)
     {
         stream.readInt(&state->mUniformBlockBindings[bindingIndex]);
         state->mActiveUniformBlockBindings.set(bindingIndex,
                                                state->mUniformBlockBindings[bindingIndex] != 0);
     }

     unsigned int transformFeedbackVaryingCount = stream.readInt<unsigned int>();
     ASSERT(state->mLinkedTransformFeedbackVaryings.empty());
     for (unsigned int transformFeedbackVaryingIndex = 0;
          transformFeedbackVaryingIndex < transformFeedbackVaryingCount;
          ++transformFeedbackVaryingIndex)
     {
         sh::Varying varying;
         stream.readInt(&varying.arraySize);
         stream.readInt(&varying.type);
         stream.readString(&varying.name);

         GLuint arrayIndex = stream.readInt<GLuint>();

         state->mLinkedTransformFeedbackVaryings.emplace_back(varying, arrayIndex);
     }

     stream.readInt(&state->mTransformFeedbackBufferMode);

     unsigned int outputCount = stream.readInt<unsigned int>();
     ASSERT(state->mOutputVariables.empty());
     for (unsigned int outputIndex = 0; outputIndex < outputCount; ++outputIndex)
     {
         sh::OutputVariable output;
         LoadShaderVar(&stream, &output);
         output.location = stream.readInt<int>();
         state->mOutputVariables.push_back(output);
     }

     unsigned int outputVarCount = stream.readInt<unsigned int>();
     for (unsigned int outputIndex = 0; outputIndex < outputVarCount; ++outputIndex)
     {
         int locationIndex = stream.readInt<int>();
         VariableLocation locationData;
         stream.readInt(&locationData.element);
         stream.readInt(&locationData.index);
         stream.readString(&locationData.name);
         state->mOutputLocations[locationIndex] = locationData;
     }

     unsigned int outputTypeCount = stream.readInt<unsigned int>();
     for (unsigned int outputIndex = 0; outputIndex < outputTypeCount; ++outputIndex)
     {
         state->mOutputVariableTypes.push_back(stream.readInt<GLenum>());
     }
     static_assert(IMPLEMENTATION_MAX_DRAW_BUFFERS < 8 * sizeof(uint32_t),
                   "All bits of DrawBufferMask can be contained in an uint32_t");
     state->mActiveOutputVariables = stream.readInt<uint32_t>();

     unsigned int low            = stream.readInt<unsigned int>();
     unsigned int high           = stream.readInt<unsigned int>();
     state->mSamplerUniformRange = RangeUI(low, high);

     unsigned int samplerCount = stream.readInt<unsigned int>();
     for (unsigned int samplerIndex = 0; samplerIndex < samplerCount; ++samplerIndex)
     {
         GLenum textureType  = stream.readInt<GLenum>();
         size_t bindingCount = stream.readInt<size_t>();
         state->mSamplerBindings.emplace_back(SamplerBinding(textureType, bindingCount));
     }

     return program->getImplementation()->load(context, infoLog, &stream);
 }

 // static
 void MemoryProgramCache::Serialize(const Context *context,
                                    const gl::Program *program,
                                    angle::MemoryBuffer *binaryOut)
 {
     BinaryOutputStream stream;

     stream.writeBytes(reinterpret_cast<const unsigned char *>(ANGLE_COMMIT_HASH),
                       ANGLE_COMMIT_HASH_SIZE);

     // nullptr context is supported when computing binary length.
     if (context)
     {
         stream.writeInt(context->getClientVersion().major);
         stream.writeInt(context->getClientVersion().minor);
     }
     else
     {
         stream.writeInt(2);
         stream.writeInt(0);
     }

     const auto &state = program->getState();

     const auto &computeLocalSize = state.getComputeShaderLocalSize();

     stream.writeInt(computeLocalSize[0]);
     stream.writeInt(computeLocalSize[1]);
     stream.writeInt(computeLocalSize[2]);

     stream.writeInt(state.getActiveAttribLocationsMask().to_ulong());

     stream.writeInt(state.getAttributes().size());
     for (const sh::Attribute &attrib : state.getAttributes())
     {
         WriteShaderVar(&stream, attrib);
         stream.writeInt(attrib.location);
     }

     stream.writeInt(state.getUniforms().size());
     for (const LinkedUniform &uniform : state.getUniforms())
     {
         WriteShaderVar(&stream, uniform);

         // FIXME: referenced

         stream.writeInt(uniform.blockIndex);
         stream.writeInt(uniform.blockInfo.offset);
         stream.writeInt(uniform.blockInfo.arrayStride);
         stream.writeInt(uniform.blockInfo.matrixStride);
         stream.writeInt(uniform.blockInfo.isRowMajorMatrix);
     }

     stream.writeInt(state.getUniformLocations().size());
     for (const auto &variable : state.getUniformLocations())
     {
         stream.writeString(variable.name);
         stream.writeInt(variable.element);
         stream.writeInt(variable.index);
         stream.writeInt(variable.used);
         stream.writeInt(variable.ignored);
     }

     stream.writeInt(state.getUniformBlocks().size());
     for (const UniformBlock &uniformBlock : state.getUniformBlocks())
     {
         stream.writeString(uniformBlock.name);
         stream.writeInt(uniformBlock.isArray);
         stream.writeInt(uniformBlock.arrayElement);
         stream.writeInt(uniformBlock.binding);
         stream.writeInt(uniformBlock.dataSize);

         stream.writeInt(uniformBlock.vertexStaticUse);
         stream.writeInt(uniformBlock.fragmentStaticUse);

         stream.writeInt(uniformBlock.memberUniformIndexes.size());
         for (unsigned int memberUniformIndex : uniformBlock.memberUniformIndexes)
         {
             stream.writeInt(memberUniformIndex);
         }
     }

     for (GLuint binding : state.getUniformBlockBindings())
     {
         stream.writeInt(binding);
     }

     stream.writeInt(state.getLinkedTransformFeedbackVaryings().size());
     for (const auto &var : state.getLinkedTransformFeedbackVaryings())
     {
         stream.writeInt(var.arraySize);
         stream.writeInt(var.type);
         stream.writeString(var.name);

         stream.writeIntOrNegOne(var.arrayIndex);
     }

     stream.writeInt(state.getTransformFeedbackBufferMode());

     stream.writeInt(state.getOutputVariables().size());
     for (const sh::OutputVariable &output : state.getOutputVariables())
     {
         WriteShaderVar(&stream, output);
         stream.writeInt(output.location);
     }

     stream.writeInt(state.getOutputLocations().size());
     for (const auto &outputPair : state.getOutputLocations())
     {
         stream.writeInt(outputPair.first);
         stream.writeIntOrNegOne(outputPair.second.element);
         stream.writeInt(outputPair.second.index);
         stream.writeString(outputPair.second.name);
     }

     stream.writeInt(state.mOutputVariableTypes.size());
     for (const auto &outputVariableType : state.mOutputVariableTypes)
     {
         stream.writeInt(outputVariableType);
     }

     static_assert(IMPLEMENTATION_MAX_DRAW_BUFFERS < 8 * sizeof(uint32_t),
                   "All bits of DrawBufferMask can be contained in an uint32_t");
     stream.writeInt(static_cast<uint32_t>(state.mActiveOutputVariables.to_ulong()));

     stream.writeInt(state.getSamplerUniformRange().low());
     stream.writeInt(state.getSamplerUniformRange().high());

     stream.writeInt(state.getSamplerBindings().size());
     for (const auto &samplerBinding : state.getSamplerBindings())
     {
         stream.writeInt(samplerBinding.textureType);
         stream.writeInt(samplerBinding.boundTextureUnits.size());
     }

     program->getImplementation()->save(&stream);

     ASSERT(binaryOut);
     binaryOut->resize(stream.length());
     memcpy(binaryOut->data(), stream.data(), stream.length());
 }

 }  // namespace gl
	//
	// Copyright 2017 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.
	//
	// MemoryProgramCache: Stores compiled and linked programs in memory so they don't
	// always have to be re-compiled. Can be used in conjunction with the platform
	// layer to warm up the cache from disk.

	#include "libANGLE/MemoryProgramCache.h"

	#include <GLSLANG/ShaderVars.h>

	#include "common/version.h"
	#include "libANGLE/BinaryStream.h"
	#include "libANGLE/Context.h"
	#include "libANGLE/Uniform.h"
	#include "libANGLE/renderer/ProgramImpl.h"

	namespace gl
	{

	namespace
	{

	void WriteShaderVar(BinaryOutputStream *stream, const sh::ShaderVariable &var)
	{
	stream->writeInt(var.type);
	stream->writeInt(var.precision);
	stream->writeString(var.name);
	stream->writeString(var.mappedName);
	stream->writeInt(var.arraySize);
	stream->writeInt(var.staticUse);
	stream->writeString(var.structName);
	ASSERT(var.fields.empty());
	}

	void LoadShaderVar(BinaryInputStream stream, sh::ShaderVariable var)
	{
	var->type = stream->readInt<GLenum>();
	var->precision = stream->readInt<GLenum>();
	var->name = stream->readString();
	var->mappedName = stream->readString();
	var->arraySize = stream->readInt<unsigned int>();
	var->staticUse = stream->readBool();
	var->structName = stream->readString();
	}

	} // anonymous namespace

	// static
	LinkResult MemoryProgramCache::Deserialize(const Context *context,
	const Program *program,
	ProgramState *state,
	const uint8_t *binary,
	size_t length,
	InfoLog &infoLog)
	{
	BinaryInputStream stream(binary, length);

	unsigned char commitString[ANGLE_COMMIT_HASH_SIZE];
	stream.readBytes(commitString, ANGLE_COMMIT_HASH_SIZE);
	if (memcmp(commitString, ANGLE_COMMIT_HASH, sizeof(unsigned char) * ANGLE_COMMIT_HASH_SIZE) !=
	0)
	{
	infoLog << "Invalid program binary version.";
	return false;
	}

	int majorVersion = stream.readInt<int>();
	int minorVersion = stream.readInt<int>();
	if (majorVersion != context->getClientMajorVersion() \|\|
	minorVersion != context->getClientMinorVersion())
	{
	infoLog << "Cannot load program binaries across different ES context versions.";
	return false;
	}

	state->mComputeShaderLocalSize[0] = stream.readInt<int>();
	state->mComputeShaderLocalSize[1] = stream.readInt<int>();
	state->mComputeShaderLocalSize[2] = stream.readInt<int>();

	static_assert(MAX_VERTEX_ATTRIBS <= sizeof(unsigned long) * 8,
	"Too many vertex attribs for mask");
	state->mActiveAttribLocationsMask = stream.readInt<unsigned long>();

	unsigned int attribCount = stream.readInt<unsigned int>();
	ASSERT(state->mAttributes.empty());
	for (unsigned int attribIndex = 0; attribIndex < attribCount; ++attribIndex)
	{
	sh::Attribute attrib;
	LoadShaderVar(&stream, &attrib);
	attrib.location = stream.readInt<int>();
	state->mAttributes.push_back(attrib);
	}

	unsigned int uniformCount = stream.readInt<unsigned int>();
	ASSERT(state->mUniforms.empty());
	for (unsigned int uniformIndex = 0; uniformIndex < uniformCount; ++uniformIndex)
	{
	LinkedUniform uniform;
	LoadShaderVar(&stream, &uniform);

	uniform.blockIndex = stream.readInt<int>();
	uniform.blockInfo.offset = stream.readInt<int>();
	uniform.blockInfo.arrayStride = stream.readInt<int>();
	uniform.blockInfo.matrixStride = stream.readInt<int>();
	uniform.blockInfo.isRowMajorMatrix = stream.readBool();

	state->mUniforms.push_back(uniform);
	}

	const unsigned int uniformIndexCount = stream.readInt<unsigned int>();
	ASSERT(state->mUniformLocations.empty());
	for (unsigned int uniformIndexIndex = 0; uniformIndexIndex < uniformIndexCount;
	uniformIndexIndex++)
	{
	VariableLocation variable;
	stream.readString(&variable.name);
	stream.readInt(&variable.element);
	stream.readInt(&variable.index);
	stream.readBool(&variable.used);
	stream.readBool(&variable.ignored);

	state->mUniformLocations.push_back(variable);
	}

	unsigned int uniformBlockCount = stream.readInt<unsigned int>();
	ASSERT(state->mUniformBlocks.empty());
	for (unsigned int uniformBlockIndex = 0; uniformBlockIndex < uniformBlockCount;
	++uniformBlockIndex)
	{
	UniformBlock uniformBlock;
	stream.readString(&uniformBlock.name);
	stream.readBool(&uniformBlock.isArray);
	stream.readInt(&uniformBlock.arrayElement);
	stream.readInt(&uniformBlock.binding);
	stream.readInt(&uniformBlock.dataSize);
	stream.readBool(&uniformBlock.vertexStaticUse);
	stream.readBool(&uniformBlock.fragmentStaticUse);

	unsigned int numMembers = stream.readInt<unsigned int>();
	for (unsigned int blockMemberIndex = 0; blockMemberIndex < numMembers; blockMemberIndex++)
	{
	uniformBlock.memberUniformIndexes.push_back(stream.readInt<unsigned int>());
	}

	state->mUniformBlocks.push_back(uniformBlock);
	}

	for (GLuint bindingIndex = 0; bindingIndex < state->mUniformBlockBindings.size();
	++bindingIndex)
	{
	stream.readInt(&state->mUniformBlockBindings[bindingIndex]);
	state->mActiveUniformBlockBindings.set(bindingIndex,
	state->mUniformBlockBindings[bindingIndex] != 0);
	}

	unsigned int transformFeedbackVaryingCount = stream.readInt<unsigned int>();
	ASSERT(state->mLinkedTransformFeedbackVaryings.empty());
	for (unsigned int transformFeedbackVaryingIndex = 0;
	transformFeedbackVaryingIndex < transformFeedbackVaryingCount;
	++transformFeedbackVaryingIndex)
	{
	sh::Varying varying;
	stream.readInt(&varying.arraySize);
	stream.readInt(&varying.type);
	stream.readString(&varying.name);

	GLuint arrayIndex = stream.readInt<GLuint>();

	state->mLinkedTransformFeedbackVaryings.emplace_back(varying, arrayIndex);
	}

	stream.readInt(&state->mTransformFeedbackBufferMode);

	unsigned int outputCount = stream.readInt<unsigned int>();
	ASSERT(state->mOutputVariables.empty());
	for (unsigned int outputIndex = 0; outputIndex < outputCount; ++outputIndex)
	{
	sh::OutputVariable output;
	LoadShaderVar(&stream, &output);
	output.location = stream.readInt<int>();
	state->mOutputVariables.push_back(output);
	}

	unsigned int outputVarCount = stream.readInt<unsigned int>();
	for (unsigned int outputIndex = 0; outputIndex < outputVarCount; ++outputIndex)
	{
	int locationIndex = stream.readInt<int>();
	VariableLocation locationData;
	stream.readInt(&locationData.element);
	stream.readInt(&locationData.index);
	stream.readString(&locationData.name);
	state->mOutputLocations[locationIndex] = locationData;
	}

	unsigned int outputTypeCount = stream.readInt<unsigned int>();
	for (unsigned int outputIndex = 0; outputIndex < outputTypeCount; ++outputIndex)
	{
	state->mOutputVariableTypes.push_back(stream.readInt<GLenum>());
	}
	static_assert(IMPLEMENTATION_MAX_DRAW_BUFFERS < 8 * sizeof(uint32_t),
	"All bits of DrawBufferMask can be contained in an uint32_t");
	state->mActiveOutputVariables = stream.readInt<uint32_t>();

	unsigned int low = stream.readInt<unsigned int>();
	unsigned int high = stream.readInt<unsigned int>();
	state->mSamplerUniformRange = RangeUI(low, high);

	unsigned int samplerCount = stream.readInt<unsigned int>();
	for (unsigned int samplerIndex = 0; samplerIndex < samplerCount; ++samplerIndex)
	{
	GLenum textureType = stream.readInt<GLenum>();
	size_t bindingCount = stream.readInt<size_t>();
	state->mSamplerBindings.emplace_back(SamplerBinding(textureType, bindingCount));
	}

	return program->getImplementation()->load(context, infoLog, &stream);
	}

	// static
	void MemoryProgramCache::Serialize(const Context *context,
	const gl::Program *program,
	angle::MemoryBuffer *binaryOut)
	{
	BinaryOutputStream stream;

	stream.writeBytes(reinterpret_cast<const unsigned char *>(ANGLE_COMMIT_HASH),
	ANGLE_COMMIT_HASH_SIZE);

	// nullptr context is supported when computing binary length.
	if (context)
	{
	stream.writeInt(context->getClientVersion().major);
	stream.writeInt(context->getClientVersion().minor);
	}
	else
	{
	stream.writeInt(2);
	stream.writeInt(0);
	}

	const auto &state = program->getState();

	const auto &computeLocalSize = state.getComputeShaderLocalSize();

	stream.writeInt(computeLocalSize[0]);
	stream.writeInt(computeLocalSize[1]);
	stream.writeInt(computeLocalSize[2]);

	stream.writeInt(state.getActiveAttribLocationsMask().to_ulong());

	stream.writeInt(state.getAttributes().size());
	for (const sh::Attribute &attrib : state.getAttributes())
	{
	WriteShaderVar(&stream, attrib);
	stream.writeInt(attrib.location);
	}

	stream.writeInt(state.getUniforms().size());
	for (const LinkedUniform &uniform : state.getUniforms())
	{
	WriteShaderVar(&stream, uniform);

	// FIXME: referenced

	stream.writeInt(uniform.blockIndex);
	stream.writeInt(uniform.blockInfo.offset);
	stream.writeInt(uniform.blockInfo.arrayStride);
	stream.writeInt(uniform.blockInfo.matrixStride);
	stream.writeInt(uniform.blockInfo.isRowMajorMatrix);
	}

	stream.writeInt(state.getUniformLocations().size());
	for (const auto &variable : state.getUniformLocations())
	{
	stream.writeString(variable.name);
	stream.writeInt(variable.element);
	stream.writeInt(variable.index);
	stream.writeInt(variable.used);
	stream.writeInt(variable.ignored);
	}

	stream.writeInt(state.getUniformBlocks().size());
	for (const UniformBlock &uniformBlock : state.getUniformBlocks())
	{
	stream.writeString(uniformBlock.name);
	stream.writeInt(uniformBlock.isArray);
	stream.writeInt(uniformBlock.arrayElement);
	stream.writeInt(uniformBlock.binding);
	stream.writeInt(uniformBlock.dataSize);

	stream.writeInt(uniformBlock.vertexStaticUse);
	stream.writeInt(uniformBlock.fragmentStaticUse);

	stream.writeInt(uniformBlock.memberUniformIndexes.size());
	for (unsigned int memberUniformIndex : uniformBlock.memberUniformIndexes)
	{
	stream.writeInt(memberUniformIndex);
	}
	}

	for (GLuint binding : state.getUniformBlockBindings())
	{
	stream.writeInt(binding);
	}

	stream.writeInt(state.getLinkedTransformFeedbackVaryings().size());
	for (const auto &var : state.getLinkedTransformFeedbackVaryings())
	{
	stream.writeInt(var.arraySize);
	stream.writeInt(var.type);
	stream.writeString(var.name);

	stream.writeIntOrNegOne(var.arrayIndex);
	}

	stream.writeInt(state.getTransformFeedbackBufferMode());

	stream.writeInt(state.getOutputVariables().size());
	for (const sh::OutputVariable &output : state.getOutputVariables())
	{
	WriteShaderVar(&stream, output);
	stream.writeInt(output.location);
	}

	stream.writeInt(state.getOutputLocations().size());
	for (const auto &outputPair : state.getOutputLocations())
	{
	stream.writeInt(outputPair.first);
	stream.writeIntOrNegOne(outputPair.second.element);
	stream.writeInt(outputPair.second.index);
	stream.writeString(outputPair.second.name);
	}

	stream.writeInt(state.mOutputVariableTypes.size());
	for (const auto &outputVariableType : state.mOutputVariableTypes)
	{
	stream.writeInt(outputVariableType);
	}

	static_assert(IMPLEMENTATION_MAX_DRAW_BUFFERS < 8 * sizeof(uint32_t),
	"All bits of DrawBufferMask can be contained in an uint32_t");
	stream.writeInt(static_cast<uint32_t>(state.mActiveOutputVariables.to_ulong()));

	stream.writeInt(state.getSamplerUniformRange().low());
	stream.writeInt(state.getSamplerUniformRange().high());

	stream.writeInt(state.getSamplerBindings().size());
	for (const auto &samplerBinding : state.getSamplerBindings())
	{
	stream.writeInt(samplerBinding.textureType);
	stream.writeInt(samplerBinding.boundTextureUnits.size());
	}

	program->getImplementation()->save(&stream);

	ASSERT(binaryOut);
	binaryOut->resize(stream.length());
	memcpy(binaryOut->data(), stream.data(), stream.length());
	}

	} // namespace gl