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// 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.
#ifndef sw_Context_hpp
#define sw_Context_hpp
#include "Config.hpp"
#include "Memset.hpp"
#include "Stream.hpp"
#include "System/Types.hpp"
#include "Vulkan/VkConfig.hpp"
#include "Vulkan/VkDescriptorSet.hpp"
namespace vk {
class ImageView;
class PipelineLayout;
} // namespace vk
namespace sw {
class SpirvShader;
struct PushConstantStorage
{
unsigned char data[vk::MAX_PUSH_CONSTANT_SIZE];
};
struct BlendState : Memset<BlendState>
{
BlendState()
: Memset(this, 0)
{}
BlendState(bool alphaBlendEnable,
VkBlendFactor sourceBlendFactor,
VkBlendFactor destBlendFactor,
VkBlendOp blendOperation,
VkBlendFactor sourceBlendFactorAlpha,
VkBlendFactor destBlendFactorAlpha,
VkBlendOp blendOperationAlpha)
: Memset(this, 0)
, alphaBlendEnable(alphaBlendEnable)
, sourceBlendFactor(sourceBlendFactor)
, destBlendFactor(destBlendFactor)
, blendOperation(blendOperation)
, sourceBlendFactorAlpha(sourceBlendFactorAlpha)
, destBlendFactorAlpha(destBlendFactorAlpha)
, blendOperationAlpha(blendOperationAlpha)
{}
bool alphaBlendEnable;
VkBlendFactor sourceBlendFactor;
VkBlendFactor destBlendFactor;
VkBlendOp blendOperation;
VkBlendFactor sourceBlendFactorAlpha;
VkBlendFactor destBlendFactorAlpha;
VkBlendOp blendOperationAlpha;
};
class Context
{
public:
Context() = default;
bool isDrawPoint(bool polygonModeAware) const;
bool isDrawLine(bool polygonModeAware) const;
bool isDrawTriangle(bool polygonModeAware) const;
bool depthWriteActive() const;
bool depthBufferActive() const;
bool stencilActive() const;
void setBlendState(int index, BlendState state);
BlendState getBlendState(int index) const;
bool isColorClamped(int index) const;
VkPrimitiveTopology topology;
VkProvokingVertexModeEXT provokingVertexMode;
bool stencilEnable;
VkStencilOpState frontStencil;
VkStencilOpState backStencil;
// Pixel processor states
VkCullModeFlags cullMode;
VkFrontFace frontFace;
VkPolygonMode polygonMode;
VkLineRasterizationModeEXT lineRasterizationMode;
float constantDepthBias;
float slopeDepthBias;
float depthBiasClamp;
bool depthRangeUnrestricted;
VkFormat renderTargetInternalFormat(int index) const;
int colorWriteActive(int index) const;
vk::DescriptorSet::Array descriptorSetObjects = {};
vk::DescriptorSet::Bindings descriptorSets = {};
vk::DescriptorSet::DynamicOffsets descriptorDynamicOffsets = {};
Stream input[MAX_INTERFACE_COMPONENTS / 4];
bool robustBufferAccess;
vk::ImageView *renderTarget[RENDERTARGETS];
vk::ImageView *depthBuffer;
vk::ImageView *stencilBuffer;
vk::PipelineLayout const *pipelineLayout;
// Shaders
const SpirvShader *pixelShader;
const SpirvShader *vertexShader;
bool occlusionEnabled;
// Pixel processor states
bool rasterizerDiscard;
bool depthBoundsTestEnable;
bool depthBufferEnable;
VkCompareOp depthCompareMode;
bool depthWriteEnable;
float lineWidth;
int colorWriteMask[RENDERTARGETS]; // RGBA
unsigned int sampleMask;
unsigned int multiSampleMask;
int sampleCount;
bool alphaToCoverage;
private:
bool colorWriteActive() const;
bool colorUsed() const;
bool alphaBlendActive(int index) const;
VkBlendFactor sourceBlendFactor(int index) const;
VkBlendFactor destBlendFactor(int index) const;
VkBlendOp blendOperation(int index) const;
VkBlendFactor sourceBlendFactorAlpha(int index) const;
VkBlendFactor destBlendFactorAlpha(int index) const;
VkBlendOp blendOperationAlpha(int index) const;
BlendState blendState[RENDERTARGETS];
};
} // namespace sw
#endif // sw_Context_hpp