/*
 * Copyright 2020 Google LLC
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef GrD3DPipelineStateBuilder_DEFINED
#define GrD3DPipelineStateBuilder_DEFINED

#include "src/gpu/GrPipeline.h"
#include "src/gpu/GrSPIRVUniformHandler.h"
#include "src/gpu/GrSPIRVVaryingHandler.h"
#include "src/gpu/d3d/GrD3DPipelineState.h"
#include "src/gpu/glsl/GrGLSLProgramBuilder.h"
#include "src/sksl/ir/SkSLProgram.h"

class GrProgramDesc;
class GrD3DGpu;
class GrVkRenderPass;

class GrD3DPipelineStateBuilder : public GrGLSLProgramBuilder {
public:
    /** Generates a pipeline state.
     *
     * The returned GrD3DPipelineState implements the supplied GrProgramInfo.
     *
     * @return the created pipeline if generation was successful; nullptr otherwise
     */
    static std::unique_ptr<GrD3DPipelineState> MakePipelineState(GrD3DGpu*,
                                                                 GrD3DRenderTarget*,
                                                                 const GrProgramDesc&,
                                                                 const GrProgramInfo&);

    static sk_sp<GrD3DPipeline> MakeComputePipeline(GrD3DGpu*, GrD3DRootSignature*,
                                                    const char* shader);

    const GrCaps* caps() const override;

    GrD3DGpu* gpu() const { return fGpu; }

    SkSL::Compiler* shaderCompiler() const override;

    void finalizeFragmentOutputColor(GrShaderVar& outputColor) override;
    void finalizeFragmentSecondaryColor(GrShaderVar& outputColor) override;

private:
    GrD3DPipelineStateBuilder(GrD3DGpu*, GrD3DRenderTarget*, const GrProgramDesc&,
                              const GrProgramInfo&);

    std::unique_ptr<GrD3DPipelineState> finalize();

    bool loadHLSLFromCache(SkReadBuffer* reader, gr_cp<ID3DBlob> shaders[]);

    gr_cp<ID3DBlob> compileD3DProgram(SkSL::ProgramKind kind,
                                      const SkSL::String& sksl,
                                      const SkSL::Program::Settings& settings,
                                      SkSL::Program::Inputs* outInputs,
                                      SkSL::String* outHLSL);

    GrGLSLUniformHandler* uniformHandler() override { return &fUniformHandler; }
    const GrGLSLUniformHandler* uniformHandler() const override { return &fUniformHandler; }
    GrGLSLVaryingHandler* varyingHandler() override { return &fVaryingHandler; }

    GrD3DGpu* fGpu;
    GrSPIRVVaryingHandler fVaryingHandler;
    GrSPIRVUniformHandler fUniformHandler;
    GrD3DRenderTarget* fRenderTarget;

    using INHERITED = GrGLSLProgramBuilder;
};

#endif