kc3-lang/angle/src/libANGLE/ProgramPipeline.h

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• Hash : 913f4f42
  Author :
  Date : 2020-04-15T00:54:37
  

  Vulkan: Support VS, FS, and CS in the same PPO
  
  This CL adds support for a Program Pipeline Object to have a VS, FS,
  and CS attached to the same PPO and then using that PPO for both draw
  and dispatch calls.
  
  Bug: angleproject:3570
  Test: KHR-GLES31.core.compute_shader.sso*
  Change-Id: I262cdbdfd442f6db5ba2b45d1308003102b237cb
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2150078
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>
  Commit-Queue: Tim Van Patten <timvp@google.com>
  

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• src/libANGLE/ProgramPipeline.h

• //
  // Copyright 2017 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.
  //
  
  // ProgramPipeline.h: Defines the gl::ProgramPipeline class.
  // Implements GL program pipeline objects and related functionality.
  // [OpenGL ES 3.1] section 7.4 page 105.
  
  #ifndef LIBANGLE_PROGRAMPIPELINE_H_
  #define LIBANGLE_PROGRAMPIPELINE_H_
  
  #include <memory>
  
  #include "common/angleutils.h"
  #include "libANGLE/Debug.h"
  #include "libANGLE/Program.h"
  #include "libANGLE/ProgramExecutable.h"
  #include "libANGLE/RefCountObject.h"
  
  namespace rx
  {
  class GLImplFactory;
  class ProgramPipelineImpl;
  }  // namespace rx
  
  namespace gl
  {
  class Context;
  class ProgramPipeline;
  
  class ProgramPipelineState final : angle::NonCopyable
  {
    public:
      ProgramPipelineState();
      ~ProgramPipelineState();
  
      const std::string &getLabel() const;
  
      // A PPO can have both graphics and compute programs attached, so
      // we don't know if the PPO is a 'graphics' or 'compute' PPO until the
      // actual draw/dispatch call.
      bool isCompute() const { return mIsCompute; }
      void setIsCompute(bool isCompute) { mIsCompute = isCompute; }
  
      const ProgramExecutable &getProgramExecutable() const { return mExecutable; }
      ProgramExecutable &getProgramExecutable() { return mExecutable; }
  
      void activeShaderProgram(Program *shaderProgram);
      void useProgramStages(const Context *context, GLbitfield stages, Program *shaderProgram);
  
      Program *getActiveShaderProgram() { return mActiveShaderProgram; }
  
      GLboolean isValid() const { return mValid; }
  
      const Program *getShaderProgram(ShaderType shaderType) const { return mPrograms[shaderType]; }
  
      bool usesShaderProgram(ShaderProgramID program) const;
  
      bool hasDefaultUniforms() const;
      bool hasTextures() const;
      bool hasUniformBuffers() const;
      bool hasStorageBuffers() const;
      bool hasAtomicCounterBuffers() const;
      bool hasImages() const;
      bool hasTransformFeedbackOutput() const;
  
    private:
      void useProgramStage(const Context *context, ShaderType shaderType, Program *shaderProgram);
  
      friend class ProgramPipeline;
  
      std::string mLabel;
  
      bool mIsCompute;
  
      // The active shader program
      Program *mActiveShaderProgram;
      // The shader programs for each stage.
      ShaderMap<Program *> mPrograms;
  
      GLboolean mValid;
  
      GLboolean mHasBeenBound;
  
      ProgramExecutable mExecutable;
  };
  
  class ProgramPipeline final : public RefCountObject<ProgramPipelineID>, public LabeledObject
  {
    public:
      ProgramPipeline(rx::GLImplFactory *factory, ProgramPipelineID handle);
      ~ProgramPipeline() override;
  
      void onDestroy(const Context *context) override;
  
      void setLabel(const Context *context, const std::string &label) override;
      const std::string &getLabel() const override;
  
      const ProgramPipelineState &getState() const { return mState; }
  
      const ProgramExecutable &getExecutable() const { return mState.getProgramExecutable(); }
      ProgramExecutable &getExecutable() { return mState.getProgramExecutable(); }
  
      rx::ProgramPipelineImpl *getImplementation() const;
  
      Program *getActiveShaderProgram() { return mState.getActiveShaderProgram(); }
      void activeShaderProgram(Program *shaderProgram);
      Program *getLinkedActiveShaderProgram(const Context *context)
      {
          Program *program = mState.getActiveShaderProgram();
          if (program)
          {
              program->resolveLink(context);
          }
          return program;
      }
  
      void useProgramStages(const Context *context, GLbitfield stages, Program *shaderProgram);
  
      void updateExecutableAttributes();
      void updateExecutableTextures();
      void updateExecutable();
  
      Program *getShaderProgram(ShaderType shaderType) const { return mState.mPrograms[shaderType]; }
  
      ProgramMergedVaryings getMergedVaryings() const;
      angle::Result link(const gl::Context *context);
      bool linkVaryings(InfoLog &infoLog) const;
      void validate(const gl::Context *context);
      bool validateSamplers(InfoLog *infoLog, const Caps &caps);
  
      bool usesShaderProgram(ShaderProgramID program) const
      {
          return mState.usesShaderProgram(program);
      }
  
      bool hasAnyDirtyBit() const { return mDirtyBits.any(); }
  
      GLboolean isValid() const { return mState.isValid(); }
  
      void bind() { mState.mHasBeenBound = true; }
      GLboolean hasBeenBound() const { return mState.mHasBeenBound; }
  
      // Program pipeline dirty bits.
      enum DirtyBitType
      {
          // One of the program stages in the PPO changed.
          DIRTY_BIT_PROGRAM_STAGE,
          DIRTY_BIT_DRAW_DISPATCH_CHANGE,
  
          DIRTY_BIT_COUNT = DIRTY_BIT_DRAW_DISPATCH_CHANGE + 1,
      };
  
      using DirtyBits = angle::BitSet<DIRTY_BIT_COUNT>;
  
      angle::Result syncState(const Context *context);
      void setDirtyBit(DirtyBitType dirtyBitType) { mDirtyBits.set(dirtyBitType); }
  
    private:
      void updateLinkedShaderStages();
  
      std::unique_ptr<rx::ProgramPipelineImpl> mProgramPipelineImpl;
  
      ProgramPipelineState mState;
  
      DirtyBits mDirtyBits;
  };
  }  // namespace gl
  
  #endif  // LIBANGLE_PROGRAMPIPELINE_H_
  

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