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

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• Hash : 71c88b31
  Author :
  Date : 2017-09-14T22:20:29
  

  Enable [[nodiscard]] for gl::Error.
  
  This forces all return values to be checked for gl::Error.
  Requires quite a bit of minor refactoring. I also added a macro to
  swallow an error without returning from a function.
  
  We could look at storing the errors in the Context at some point,
  since almost always when we're generating errors that we need to
  discard we have access to the Context as a parameter.
  
  BUG=angleproject:2150
  
  Change-Id: I457e48a30c002eda0993acbcd3180ba87bf169fb
  Reviewed-on: https://chromium-review.googlesource.com/665173
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
  

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• src/libANGLE/TransformFeedback.h

• //
  // 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.
  //
  
  #ifndef LIBANGLE_TRANSFORM_FEEDBACK_H_
  #define LIBANGLE_TRANSFORM_FEEDBACK_H_
  
  #include "libANGLE/RefCountObject.h"
  
  #include "common/angleutils.h"
  #include "libANGLE/Debug.h"
  
  #include "angle_gl.h"
  
  namespace rx
  {
  class GLImplFactory;
  class TransformFeedbackImpl;
  }
  
  namespace gl
  {
  class Buffer;
  struct Caps;
  class Context;
  class Program;
  
  class TransformFeedbackState final : angle::NonCopyable
  {
    public:
      TransformFeedbackState(size_t maxIndexedBuffers);
  
      const BindingPointer<Buffer> &getGenericBuffer() const;
      const OffsetBindingPointer<Buffer> &getIndexedBuffer(size_t idx) const;
      const std::vector<OffsetBindingPointer<Buffer>> &getIndexedBuffers() const;
  
    private:
      friend class TransformFeedback;
  
      std::string mLabel;
  
      bool mActive;
      GLenum mPrimitiveMode;
      bool mPaused;
  
      Program *mProgram;
  
      BindingPointer<Buffer> mGenericBuffer;
      std::vector<OffsetBindingPointer<Buffer>> mIndexedBuffers;
  };
  
  class TransformFeedback final : public RefCountObject, public LabeledObject
  {
    public:
      TransformFeedback(rx::GLImplFactory *implFactory, GLuint id, const Caps &caps);
      virtual ~TransformFeedback();
      Error onDestroy(const Context *context) override;
  
      void setLabel(const std::string &label) override;
      const std::string &getLabel() const override;
  
      void begin(const Context *context, GLenum primitiveMode, Program *program);
      void end(const Context *context);
      void pause();
      void resume();
  
      bool isActive() const;
      bool isPaused() const;
      GLenum getPrimitiveMode() const;
  
      bool hasBoundProgram(GLuint program) const;
  
      void bindGenericBuffer(const Context *context, Buffer *buffer);
      const BindingPointer<Buffer> &getGenericBuffer() const;
  
      void bindIndexedBuffer(const Context *context,
                             size_t index,
                             Buffer *buffer,
                             size_t offset,
                             size_t size);
      const OffsetBindingPointer<Buffer> &getIndexedBuffer(size_t index) const;
      size_t getIndexedBufferCount() const;
  
      void detachBuffer(const Context *context, GLuint bufferName);
  
      rx::TransformFeedbackImpl *getImplementation();
      const rx::TransformFeedbackImpl *getImplementation() const;
  
    private:
      void bindProgram(const Context *context, Program *program);
  
      TransformFeedbackState mState;
      rx::TransformFeedbackImpl* mImplementation;
  };
  
  }
  
  #endif // LIBANGLE_TRANSFORM_FEEDBACK_H_
  

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