src/Device/PixelProcessor.cpp - SwiftShader - Git at Google

 // Copyright 2016 The SwiftShader Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //    http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.

 #include "PixelProcessor.hpp"

 #include "Primitive.hpp"
 #include "Pipeline/PixelProgram.hpp"
 #include "Pipeline/Constants.hpp"
 #include "Vulkan/VkDebug.hpp"
 #include "Vulkan/VkImageView.hpp"

 #include <string.h>

 namespace sw
 {
 	extern TransparencyAntialiasing transparencyAntialiasing;
 	extern bool perspectiveCorrection;

 	bool precachePixel = false;

 	unsigned int PixelProcessor::States::computeHash()
 	{
 		unsigned int *state = (unsigned int*)this;
 		unsigned int hash = 0;

 		for(unsigned int i = 0; i < sizeof(States) / 4; i++)
 		{
 			hash ^= state[i];
 		}

 		return hash;
 	}

 	PixelProcessor::State::State()
 	{
 		memset(this, 0, sizeof(State));
 	}

 	bool PixelProcessor::State::operator==(const State &state) const
 	{
 		if(hash != state.hash)
 		{
 			return false;
 		}

 		return memcmp(static_cast<const States*>(this), static_cast<const States*>(&state), sizeof(States)) == 0;
 	}

 	PixelProcessor::PixelProcessor(Context *context) : context(context)
 	{
 		routineCache = nullptr;
 		setRoutineCacheSize(1024);
 	}

 	PixelProcessor::~PixelProcessor()
 	{
 		delete routineCache;
 		routineCache = nullptr;
 	}

 	void PixelProcessor::setRenderTarget(int index, vk::ImageView* renderTarget)
 	{
 		context->renderTarget[index] = renderTarget;
 	}

 	void PixelProcessor::setDepthBuffer(vk::ImageView *depthBuffer)
 	{
 		context->depthBuffer = depthBuffer;
 	}

 	void PixelProcessor::setStencilBuffer(vk::ImageView *stencilBuffer)
 	{
 		context->stencilBuffer = stencilBuffer;
 	}

 	void PixelProcessor::setDepthBufferEnable(bool depthBufferEnable)
 	{
 		context->setDepthBufferEnable(depthBufferEnable);
 	}

 	void PixelProcessor::setDepthCompare(VkCompareOp depthCompareMode)
 	{
 		context->depthCompareMode = depthCompareMode;
 	}

 	void PixelProcessor::setDepthWriteEnable(bool depthWriteEnable)
 	{
 		context->depthWriteEnable = depthWriteEnable;
 	}

 	void PixelProcessor::setCullMode(CullMode cullMode, bool frontFacingCCW)
 	{
 		context->cullMode = cullMode;
 		context->frontFacingCCW = frontFacingCCW;
 	}

 	void PixelProcessor::setColorWriteMask(int index, int rgbaMask)
 	{
 		context->setColorWriteMask(index, rgbaMask);
 	}

 	void PixelProcessor::setBlendConstant(const Color<float> &blendConstant)
 	{
 		// FIXME: Compact into generic function   // FIXME: Clamp
 		short blendConstantR = iround(65535 * blendConstant.r);
 		short blendConstantG = iround(65535 * blendConstant.g);
 		short blendConstantB = iround(65535 * blendConstant.b);
 		short blendConstantA = iround(65535 * blendConstant.a);

 		factor.blendConstant4W[0][0] = blendConstantR;
 		factor.blendConstant4W[0][1] = blendConstantR;
 		factor.blendConstant4W[0][2] = blendConstantR;
 		factor.blendConstant4W[0][3] = blendConstantR;

 		factor.blendConstant4W[1][0] = blendConstantG;
 		factor.blendConstant4W[1][1] = blendConstantG;
 		factor.blendConstant4W[1][2] = blendConstantG;
 		factor.blendConstant4W[1][3] = blendConstantG;

 		factor.blendConstant4W[2][0] = blendConstantB;
 		factor.blendConstant4W[2][1] = blendConstantB;
 		factor.blendConstant4W[2][2] = blendConstantB;
 		factor.blendConstant4W[2][3] = blendConstantB;

 		factor.blendConstant4W[3][0] = blendConstantA;
 		factor.blendConstant4W[3][1] = blendConstantA;
 		factor.blendConstant4W[3][2] = blendConstantA;
 		factor.blendConstant4W[3][3] = blendConstantA;

 		// FIXME: Compact into generic function   // FIXME: Clamp
 		short invBlendConstantR = iround(65535 * (1 - blendConstant.r));
 		short invBlendConstantG = iround(65535 * (1 - blendConstant.g));
 		short invBlendConstantB = iround(65535 * (1 - blendConstant.b));
 		short invBlendConstantA = iround(65535 * (1 - blendConstant.a));

 		factor.invBlendConstant4W[0][0] = invBlendConstantR;
 		factor.invBlendConstant4W[0][1] = invBlendConstantR;
 		factor.invBlendConstant4W[0][2] = invBlendConstantR;
 		factor.invBlendConstant4W[0][3] = invBlendConstantR;

 		factor.invBlendConstant4W[1][0] = invBlendConstantG;
 		factor.invBlendConstant4W[1][1] = invBlendConstantG;
 		factor.invBlendConstant4W[1][2] = invBlendConstantG;
 		factor.invBlendConstant4W[1][3] = invBlendConstantG;

 		factor.invBlendConstant4W[2][0] = invBlendConstantB;
 		factor.invBlendConstant4W[2][1] = invBlendConstantB;
 		factor.invBlendConstant4W[2][2] = invBlendConstantB;
 		factor.invBlendConstant4W[2][3] = invBlendConstantB;

 		factor.invBlendConstant4W[3][0] = invBlendConstantA;
 		factor.invBlendConstant4W[3][1] = invBlendConstantA;
 		factor.invBlendConstant4W[3][2] = invBlendConstantA;
 		factor.invBlendConstant4W[3][3] = invBlendConstantA;

 		factor.blendConstant4F[0][0] = blendConstant.r;
 		factor.blendConstant4F[0][1] = blendConstant.r;
 		factor.blendConstant4F[0][2] = blendConstant.r;
 		factor.blendConstant4F[0][3] = blendConstant.r;

 		factor.blendConstant4F[1][0] = blendConstant.g;
 		factor.blendConstant4F[1][1] = blendConstant.g;
 		factor.blendConstant4F[1][2] = blendConstant.g;
 		factor.blendConstant4F[1][3] = blendConstant.g;

 		factor.blendConstant4F[2][0] = blendConstant.b;
 		factor.blendConstant4F[2][1] = blendConstant.b;
 		factor.blendConstant4F[2][2] = blendConstant.b;
 		factor.blendConstant4F[2][3] = blendConstant.b;

 		factor.blendConstant4F[3][0] = blendConstant.a;
 		factor.blendConstant4F[3][1] = blendConstant.a;
 		factor.blendConstant4F[3][2] = blendConstant.a;
 		factor.blendConstant4F[3][3] = blendConstant.a;

 		factor.invBlendConstant4F[0][0] = 1 - blendConstant.r;
 		factor.invBlendConstant4F[0][1] = 1 - blendConstant.r;
 		factor.invBlendConstant4F[0][2] = 1 - blendConstant.r;
 		factor.invBlendConstant4F[0][3] = 1 - blendConstant.r;

 		factor.invBlendConstant4F[1][0] = 1 - blendConstant.g;
 		factor.invBlendConstant4F[1][1] = 1 - blendConstant.g;
 		factor.invBlendConstant4F[1][2] = 1 - blendConstant.g;
 		factor.invBlendConstant4F[1][3] = 1 - blendConstant.g;

 		factor.invBlendConstant4F[2][0] = 1 - blendConstant.b;
 		factor.invBlendConstant4F[2][1] = 1 - blendConstant.b;
 		factor.invBlendConstant4F[2][2] = 1 - blendConstant.b;
 		factor.invBlendConstant4F[2][3] = 1 - blendConstant.b;

 		factor.invBlendConstant4F[3][0] = 1 - blendConstant.a;
 		factor.invBlendConstant4F[3][1] = 1 - blendConstant.a;
 		factor.invBlendConstant4F[3][2] = 1 - blendConstant.a;
 		factor.invBlendConstant4F[3][3] = 1 - blendConstant.a;
 	}

 	void PixelProcessor::setAlphaBlendEnable(bool alphaBlendEnable)
 	{
 		context->setAlphaBlendEnable(alphaBlendEnable);
 	}

 	void PixelProcessor::setSourceBlendFactor(VkBlendFactor sourceBlendFactor)
 	{
 		context->setSourceBlendFactor(sourceBlendFactor);
 	}

 	void PixelProcessor::setDestBlendFactor(VkBlendFactor destBlendFactor)
 	{
 		context->setDestBlendFactor(destBlendFactor);
 	}

 	void PixelProcessor::setBlendOperation(VkBlendOp blendOperation)
 	{
 		context->setBlendOperation(blendOperation);
 	}

 	void PixelProcessor::setSeparateAlphaBlendEnable(bool separateAlphaBlendEnable)
 	{
 		context->setSeparateAlphaBlendEnable(separateAlphaBlendEnable);
 	}

 	void PixelProcessor::setSourceBlendFactorAlpha(VkBlendFactor sourceBlendFactorAlpha)
 	{
 		context->setSourceBlendFactorAlpha(sourceBlendFactorAlpha);
 	}

 	void PixelProcessor::setDestBlendFactorAlpha(VkBlendFactor destBlendFactorAlpha)
 	{
 		context->setDestBlendFactorAlpha(destBlendFactorAlpha);
 	}

 	void PixelProcessor::setBlendOperationAlpha(VkBlendOp blendOperationAlpha)
 	{
 		context->setBlendOperationAlpha(blendOperationAlpha);
 	}

 	void PixelProcessor::setPerspectiveCorrection(bool perspectiveEnable)
 	{
 		perspectiveCorrection = perspectiveEnable;
 	}

 	void PixelProcessor::setOcclusionEnabled(bool enable)
 	{
 		context->occlusionEnabled = enable;
 	}

 	void PixelProcessor::setRoutineCacheSize(int cacheSize)
 	{
 		delete routineCache;
 		routineCache = new RoutineCache<State>(clamp(cacheSize, 1, 65536));
 	}

 	const PixelProcessor::State PixelProcessor::update() const
 	{
 		State state;

 		if(context->pixelShader)
 		{
 			state.shaderID = context->pixelShader->getSerialID();
 		}
 		else
 		{
 			state.shaderID = 0;
 		}

 		state.alphaToCoverage = context->alphaToCoverage;
 		state.depthWriteEnable = context->depthWriteActive();

 		if(context->stencilActive())
 		{
 			state.stencilActive = true;
 			state.twoSidedStencil = context->twoSidedStencil;
 			state.frontStencil = context->frontStencil;
 			state.backStencil = context->backStencil;
 		}

 		if(context->depthBufferActive())
 		{
 			state.depthTestActive = true;
 			state.depthCompareMode = context->depthCompareMode;
 			state.quadLayoutDepthBuffer = context->depthBuffer->getFormat().hasQuadLayout();
 			state.depthFormat = context->depthBuffer->getFormat();
 		}

 		state.occlusionEnabled = context->occlusionEnabled;

 		state.perspective = context->perspectiveActive();
 		state.depthClamp = (context->depthBias != 0.0f) || (context->slopeDepthBias != 0.0f);

 		if(context->alphaBlendActive())
 		{
 			state.alphaBlendActive = true;
 			state.sourceBlendFactor = context->sourceBlendFactor();
 			state.destBlendFactor = context->destBlendFactor();
 			state.blendOperation = context->blendOperation();
 			state.sourceBlendFactorAlpha = context->sourceBlendFactorAlpha();
 			state.destBlendFactorAlpha = context->destBlendFactorAlpha();
 			state.blendOperationAlpha = context->blendOperationAlpha();
 		}

 		for(int i = 0; i < RENDERTARGETS; i++)
 		{
 			state.colorWriteMask |= context->colorWriteActive(i) << (4 * i);
 			state.targetFormat[i] = context->renderTargetInternalFormat(i);
 		}

 		state.multiSample = static_cast<unsigned int>(context->sampleCount);
 		state.multiSampleMask = context->multiSampleMask;

 		if(state.multiSample > 1 && context->pixelShader)
 		{
 			state.centroid = context->pixelShader->getModes().NeedsCentroid;
 		}

 		state.frontFaceCCW = context->frontFacingCCW;

 		state.hash = state.computeHash();

 		return state;
 	}

 	Routine *PixelProcessor::routine(const State &state)
 	{
 		Routine *routine = routineCache->query(state);

 		if(!routine)
 		{
 			QuadRasterizer *generator = new PixelProgram(state, context->pipelineLayout, context->pixelShader, context->descriptorSets);
 			generator->generate();
 			routine = (*generator)("PixelRoutine_%0.8X", state.shaderID);
 			delete generator;

 			routineCache->add(state, routine);
 		}

 		return routine;
 	}
 }
	// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software
	// distributed under the License is distributed on an "AS IS" BASIS,
	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	// See the License for the specific language governing permissions and
	// limitations under the License.

	#include "PixelProcessor.hpp"

	#include "Primitive.hpp"
	#include "Pipeline/PixelProgram.hpp"
	#include "Pipeline/Constants.hpp"
	#include "Vulkan/VkDebug.hpp"
	#include "Vulkan/VkImageView.hpp"

	#include <string.h>

	namespace sw
	{
	extern TransparencyAntialiasing transparencyAntialiasing;
	extern bool perspectiveCorrection;

	bool precachePixel = false;

	unsigned int PixelProcessor::States::computeHash()
	{
	unsigned int state = (unsigned int)this;
	unsigned int hash = 0;

	for(unsigned int i = 0; i < sizeof(States) / 4; i++)
	{
	hash ^= state[i];
	}

	return hash;
	}

	PixelProcessor::State::State()
	{
	memset(this, 0, sizeof(State));
	}

	bool PixelProcessor::State::operator==(const State &state) const
	{
	if(hash != state.hash)
	{
	return false;
	}

	return memcmp(static_cast<const States>(this), static_cast<const States>(&state), sizeof(States)) == 0;
	}

	PixelProcessor::PixelProcessor(Context *context) : context(context)
	{
	routineCache = nullptr;
	setRoutineCacheSize(1024);
	}

	PixelProcessor::~PixelProcessor()
	{
	delete routineCache;
	routineCache = nullptr;
	}

	void PixelProcessor::setRenderTarget(int index, vk::ImageView* renderTarget)
	{
	context->renderTarget[index] = renderTarget;
	}

	void PixelProcessor::setDepthBuffer(vk::ImageView *depthBuffer)
	{
	context->depthBuffer = depthBuffer;
	}

	void PixelProcessor::setStencilBuffer(vk::ImageView *stencilBuffer)
	{
	context->stencilBuffer = stencilBuffer;
	}

	void PixelProcessor::setDepthBufferEnable(bool depthBufferEnable)
	{
	context->setDepthBufferEnable(depthBufferEnable);
	}

	void PixelProcessor::setDepthCompare(VkCompareOp depthCompareMode)
	{
	context->depthCompareMode = depthCompareMode;
	}

	void PixelProcessor::setDepthWriteEnable(bool depthWriteEnable)
	{
	context->depthWriteEnable = depthWriteEnable;
	}

	void PixelProcessor::setCullMode(CullMode cullMode, bool frontFacingCCW)
	{
	context->cullMode = cullMode;
	context->frontFacingCCW = frontFacingCCW;
	}

	void PixelProcessor::setColorWriteMask(int index, int rgbaMask)
	{
	context->setColorWriteMask(index, rgbaMask);
	}

	void PixelProcessor::setBlendConstant(const Color<float> &blendConstant)
	{
	// FIXME: Compact into generic function // FIXME: Clamp
	short blendConstantR = iround(65535 * blendConstant.r);
	short blendConstantG = iround(65535 * blendConstant.g);
	short blendConstantB = iround(65535 * blendConstant.b);
	short blendConstantA = iround(65535 * blendConstant.a);

	factor.blendConstant4W[0][0] = blendConstantR;
	factor.blendConstant4W[0][1] = blendConstantR;
	factor.blendConstant4W[0][2] = blendConstantR;
	factor.blendConstant4W[0][3] = blendConstantR;

	factor.blendConstant4W[1][0] = blendConstantG;
	factor.blendConstant4W[1][1] = blendConstantG;
	factor.blendConstant4W[1][2] = blendConstantG;
	factor.blendConstant4W[1][3] = blendConstantG;

	factor.blendConstant4W[2][0] = blendConstantB;
	factor.blendConstant4W[2][1] = blendConstantB;
	factor.blendConstant4W[2][2] = blendConstantB;
	factor.blendConstant4W[2][3] = blendConstantB;

	factor.blendConstant4W[3][0] = blendConstantA;
	factor.blendConstant4W[3][1] = blendConstantA;
	factor.blendConstant4W[3][2] = blendConstantA;
	factor.blendConstant4W[3][3] = blendConstantA;

	// FIXME: Compact into generic function // FIXME: Clamp
	short invBlendConstantR = iround(65535 * (1 - blendConstant.r));
	short invBlendConstantG = iround(65535 * (1 - blendConstant.g));
	short invBlendConstantB = iround(65535 * (1 - blendConstant.b));
	short invBlendConstantA = iround(65535 * (1 - blendConstant.a));

	factor.invBlendConstant4W[0][0] = invBlendConstantR;
	factor.invBlendConstant4W[0][1] = invBlendConstantR;
	factor.invBlendConstant4W[0][2] = invBlendConstantR;
	factor.invBlendConstant4W[0][3] = invBlendConstantR;

	factor.invBlendConstant4W[1][0] = invBlendConstantG;
	factor.invBlendConstant4W[1][1] = invBlendConstantG;
	factor.invBlendConstant4W[1][2] = invBlendConstantG;
	factor.invBlendConstant4W[1][3] = invBlendConstantG;

	factor.invBlendConstant4W[2][0] = invBlendConstantB;
	factor.invBlendConstant4W[2][1] = invBlendConstantB;
	factor.invBlendConstant4W[2][2] = invBlendConstantB;
	factor.invBlendConstant4W[2][3] = invBlendConstantB;

	factor.invBlendConstant4W[3][0] = invBlendConstantA;
	factor.invBlendConstant4W[3][1] = invBlendConstantA;
	factor.invBlendConstant4W[3][2] = invBlendConstantA;
	factor.invBlendConstant4W[3][3] = invBlendConstantA;

	factor.blendConstant4F[0][0] = blendConstant.r;
	factor.blendConstant4F[0][1] = blendConstant.r;
	factor.blendConstant4F[0][2] = blendConstant.r;
	factor.blendConstant4F[0][3] = blendConstant.r;

	factor.blendConstant4F[1][0] = blendConstant.g;
	factor.blendConstant4F[1][1] = blendConstant.g;
	factor.blendConstant4F[1][2] = blendConstant.g;
	factor.blendConstant4F[1][3] = blendConstant.g;

	factor.blendConstant4F[2][0] = blendConstant.b;
	factor.blendConstant4F[2][1] = blendConstant.b;
	factor.blendConstant4F[2][2] = blendConstant.b;
	factor.blendConstant4F[2][3] = blendConstant.b;

	factor.blendConstant4F[3][0] = blendConstant.a;
	factor.blendConstant4F[3][1] = blendConstant.a;
	factor.blendConstant4F[3][2] = blendConstant.a;
	factor.blendConstant4F[3][3] = blendConstant.a;

	factor.invBlendConstant4F[0][0] = 1 - blendConstant.r;
	factor.invBlendConstant4F[0][1] = 1 - blendConstant.r;
	factor.invBlendConstant4F[0][2] = 1 - blendConstant.r;
	factor.invBlendConstant4F[0][3] = 1 - blendConstant.r;

	factor.invBlendConstant4F[1][0] = 1 - blendConstant.g;
	factor.invBlendConstant4F[1][1] = 1 - blendConstant.g;
	factor.invBlendConstant4F[1][2] = 1 - blendConstant.g;
	factor.invBlendConstant4F[1][3] = 1 - blendConstant.g;

	factor.invBlendConstant4F[2][0] = 1 - blendConstant.b;
	factor.invBlendConstant4F[2][1] = 1 - blendConstant.b;
	factor.invBlendConstant4F[2][2] = 1 - blendConstant.b;
	factor.invBlendConstant4F[2][3] = 1 - blendConstant.b;

	factor.invBlendConstant4F[3][0] = 1 - blendConstant.a;
	factor.invBlendConstant4F[3][1] = 1 - blendConstant.a;
	factor.invBlendConstant4F[3][2] = 1 - blendConstant.a;
	factor.invBlendConstant4F[3][3] = 1 - blendConstant.a;
	}

	void PixelProcessor::setAlphaBlendEnable(bool alphaBlendEnable)
	{
	context->setAlphaBlendEnable(alphaBlendEnable);
	}

	void PixelProcessor::setSourceBlendFactor(VkBlendFactor sourceBlendFactor)
	{
	context->setSourceBlendFactor(sourceBlendFactor);
	}

	void PixelProcessor::setDestBlendFactor(VkBlendFactor destBlendFactor)
	{
	context->setDestBlendFactor(destBlendFactor);
	}

	void PixelProcessor::setBlendOperation(VkBlendOp blendOperation)
	{
	context->setBlendOperation(blendOperation);
	}

	void PixelProcessor::setSeparateAlphaBlendEnable(bool separateAlphaBlendEnable)
	{
	context->setSeparateAlphaBlendEnable(separateAlphaBlendEnable);
	}

	void PixelProcessor::setSourceBlendFactorAlpha(VkBlendFactor sourceBlendFactorAlpha)
	{
	context->setSourceBlendFactorAlpha(sourceBlendFactorAlpha);
	}

	void PixelProcessor::setDestBlendFactorAlpha(VkBlendFactor destBlendFactorAlpha)
	{
	context->setDestBlendFactorAlpha(destBlendFactorAlpha);
	}

	void PixelProcessor::setBlendOperationAlpha(VkBlendOp blendOperationAlpha)
	{
	context->setBlendOperationAlpha(blendOperationAlpha);
	}

	void PixelProcessor::setPerspectiveCorrection(bool perspectiveEnable)
	{
	perspectiveCorrection = perspectiveEnable;
	}

	void PixelProcessor::setOcclusionEnabled(bool enable)
	{
	context->occlusionEnabled = enable;
	}

	void PixelProcessor::setRoutineCacheSize(int cacheSize)
	{
	delete routineCache;
	routineCache = new RoutineCache<State>(clamp(cacheSize, 1, 65536));
	}

	const PixelProcessor::State PixelProcessor::update() const
	{
	State state;

	if(context->pixelShader)
	{
	state.shaderID = context->pixelShader->getSerialID();
	}
	else
	{
	state.shaderID = 0;
	}

	state.alphaToCoverage = context->alphaToCoverage;
	state.depthWriteEnable = context->depthWriteActive();

	if(context->stencilActive())
	{
	state.stencilActive = true;
	state.twoSidedStencil = context->twoSidedStencil;
	state.frontStencil = context->frontStencil;
	state.backStencil = context->backStencil;
	}

	if(context->depthBufferActive())
	{
	state.depthTestActive = true;
	state.depthCompareMode = context->depthCompareMode;
	state.quadLayoutDepthBuffer = context->depthBuffer->getFormat().hasQuadLayout();
	state.depthFormat = context->depthBuffer->getFormat();
	}

	state.occlusionEnabled = context->occlusionEnabled;

	state.perspective = context->perspectiveActive();
	state.depthClamp = (context->depthBias != 0.0f) \|\| (context->slopeDepthBias != 0.0f);

	if(context->alphaBlendActive())
	{
	state.alphaBlendActive = true;
	state.sourceBlendFactor = context->sourceBlendFactor();
	state.destBlendFactor = context->destBlendFactor();
	state.blendOperation = context->blendOperation();
	state.sourceBlendFactorAlpha = context->sourceBlendFactorAlpha();
	state.destBlendFactorAlpha = context->destBlendFactorAlpha();
	state.blendOperationAlpha = context->blendOperationAlpha();
	}

	for(int i = 0; i < RENDERTARGETS; i++)
	{
	state.colorWriteMask \|= context->colorWriteActive(i) << (4 * i);
	state.targetFormat[i] = context->renderTargetInternalFormat(i);
	}

	state.multiSample = static_cast<unsigned int>(context->sampleCount);
	state.multiSampleMask = context->multiSampleMask;

	if(state.multiSample > 1 && context->pixelShader)
	{
	state.centroid = context->pixelShader->getModes().NeedsCentroid;
	}

	state.frontFaceCCW = context->frontFacingCCW;

	state.hash = state.computeHash();

	return state;
	}

	Routine *PixelProcessor::routine(const State &state)
	{
	Routine *routine = routineCache->query(state);

	if(!routine)
	{
	QuadRasterizer *generator = new PixelProgram(state, context->pipelineLayout, context->pixelShader, context->descriptorSets);
	generator->generate();
	routine = (*generator)("PixelRoutine_%0.8X", state.shaderID);
	delete generator;

	routineCache->add(state, routine);
	}

	return routine;
	}
	}