//
// Copyright (c) 2014 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.
//

// ShaderD3D.h: Defines the rx::ShaderD3D class which implements rx::ShaderImpl.

#ifndef LIBANGLE_RENDERER_D3D_SHADERD3D_H_
#define LIBANGLE_RENDERER_D3D_SHADERD3D_H_

#include "libANGLE/renderer/ShaderImpl.h"

#include <map>

namespace angle
{
struct CompilerWorkaroundsD3D;
struct WorkaroundsD3D;
}  // namespace angle

namespace gl
{
struct Extensions;
}

namespace rx
{
class DynamicHLSL;
class RendererD3D;
struct D3DUniform;

class ShaderD3D : public ShaderImpl
{
  public:
    ShaderD3D(const gl::ShaderState &data,
              const angle::WorkaroundsD3D &workarounds,
              const gl::Extensions &extensions);
    ~ShaderD3D() override;

    std::shared_ptr<WaitableCompileEvent> compile(const gl::Context *context,
                                                  gl::ShCompilerInstance *compilerInstance,
                                                  ShCompileOptions options) override;

    std::string getDebugInfo() const override;

    // D3D-specific methods
    void uncompile();

    bool hasUniform(const std::string &name) const;

    // Query regular uniforms with their name. Query sampler fields of structs with field selection
    // using dot (.) operator.
    unsigned int getUniformRegister(const std::string &uniformName) const;

    unsigned int getUniformBlockRegister(const std::string &blockName) const;
    unsigned int getShaderStorageBlockRegister(const std::string &blockName) const;
    unsigned int getReadonlyImage2DRegisterIndex() const { return mReadonlyImage2DRegisterIndex; }
    unsigned int getImage2DRegisterIndex() const { return mImage2DRegisterIndex; }
    bool useImage2DFunction(const std::string &functionName) const;
    void appendDebugInfo(const std::string &info) const { mDebugInfo += info; }

    void generateWorkarounds(angle::CompilerWorkaroundsD3D *workarounds) const;

    bool usesMultipleRenderTargets() const { return mUsesMultipleRenderTargets; }
    bool usesFragColor() const { return mUsesFragColor; }
    bool usesFragData() const { return mUsesFragData; }
    bool usesFragCoord() const { return mUsesFragCoord; }
    bool usesFrontFacing() const { return mUsesFrontFacing; }
    bool usesPointSize() const { return mUsesPointSize; }
    bool usesPointCoord() const { return mUsesPointCoord; }
    bool usesDepthRange() const { return mUsesDepthRange; }
    bool usesFragDepth() const { return mUsesFragDepth; }
    bool usesVertexID() const { return mUsesVertexID; }
    bool usesViewID() const { return mUsesViewID; }
    bool hasANGLEMultiviewEnabled() const { return mHasANGLEMultiviewEnabled; }

    ShShaderOutput getCompilerOutputType() const;

  private:
    bool mUsesMultipleRenderTargets;
    bool mUsesFragColor;
    bool mUsesFragData;
    bool mUsesFragCoord;
    bool mUsesFrontFacing;
    bool mUsesPointSize;
    bool mUsesPointCoord;
    bool mUsesDepthRange;
    bool mUsesFragDepth;
    bool mHasANGLEMultiviewEnabled;
    bool mUsesVertexID;
    bool mUsesViewID;
    bool mUsesDiscardRewriting;
    bool mUsesNestedBreak;
    bool mRequiresIEEEStrictCompiling;

    ShShaderOutput mCompilerOutputType;
    mutable std::string mDebugInfo;
    std::map<std::string, unsigned int> mUniformRegisterMap;
    std::map<std::string, unsigned int> mUniformBlockRegisterMap;
    std::map<std::string, unsigned int> mShaderStorageBlockRegisterMap;
    unsigned int mReadonlyImage2DRegisterIndex;
    unsigned int mImage2DRegisterIndex;
    std::set<std::string> mUsedImage2DFunctionNames;
    ShCompileOptions mAdditionalOptions;
};
}  // namespace rx

#endif  // LIBANGLE_RENDERER_D3D_SHADERD3D_H_
