GrVkPipelineStateBuilder.h

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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
 
#ifndef GrVkPipelineStateBuilder_DEFINED
#define GrVkPipelineStateBuilder_DEFINED
 
#include "include/gpu/vk/GrVkTypes.h"
#include "src/gpu/ganesh/GrPipeline.h"
#include "src/gpu/ganesh/glsl/GrGLSLProgramBuilder.h"
#include "src/gpu/ganesh/vk/GrVkPipelineState.h"
#include "src/gpu/ganesh/vk/GrVkUniformHandler.h"
#include "src/gpu/ganesh/vk/GrVkVaryingHandler.h"
#include "src/sksl/SkSLCompiler.h"
#include "src/sksl/ir/SkSLProgram.h"
 
class GrProgramDesc;
class GrVkGpu;
class GrVkRenderPass;
class SkReadBuffer;
 
class GrVkPipelineStateBuilder : public GrGLSLProgramBuilder {
public:
    /** Generates a pipeline state.
     *
     * The return GrVkPipelineState implements the supplied GrProgramInfo.
     *
     * @return the created pipeline if generation was successful; nullptr otherwise
     */
    static GrVkPipelineState* CreatePipelineState(GrVkGpu*,
                                                  const GrProgramDesc&,
                                                  const GrProgramInfo&,
                                                  VkRenderPass compatibleRenderPass,
                                                  bool overrideSubpassForResolveLoad);
 
    const GrCaps* caps() const override;
 
    GrVkGpu* gpu() const { return fGpu; }
 
    void finalizeFragmentSecondaryColor(GrShaderVar& outputColor) override;
 
private:
    GrVkPipelineStateBuilder(GrVkGpu*, const GrProgramDesc&, const GrProgramInfo&);
 
    GrVkPipelineState* finalize(const GrProgramDesc&, VkRenderPass compatibleRenderPass,
                                bool overrideSupbassForResolveLoad);
 
    // returns number of shader stages
    int loadShadersFromCache(SkReadBuffer* cached, VkShaderModule outShaderModules[],
                             VkPipelineShaderStageCreateInfo* outStageInfo);
 
    void storeShadersInCache(const std::string shaders[],
                             const SkSL::Program::Interface[],
                             bool isSkSL);
 
    bool createVkShaderModule(VkShaderStageFlagBits stage,
                              const std::string& sksl,
                              VkShaderModule* shaderModule,
                              VkPipelineShaderStageCreateInfo* stageInfo,
                              const SkSL::ProgramSettings& settings,
                              std::string* outSPIRV,
                              SkSL::Program::Interface* outInterface);
 
    bool installVkShaderModule(VkShaderStageFlagBits stage,
                               const GrGLSLShaderBuilder& builder,
                               VkShaderModule* shaderModule,
                               VkPipelineShaderStageCreateInfo* stageInfo,
                               std::string spirv,
                               SkSL::Program::Interface);
 
    GrGLSLUniformHandler* uniformHandler() override { return &fUniformHandler; }
    const GrGLSLUniformHandler* uniformHandler() const override { return &fUniformHandler; }
    GrGLSLVaryingHandler* varyingHandler() override { return &fVaryingHandler; }
 
    GrVkGpu* fGpu;
    GrVkVaryingHandler fVaryingHandler;
    GrVkUniformHandler fUniformHandler;
 
    using INHERITED = GrGLSLProgramBuilder;
};
 
#endif