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

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• Author : Jamie Madill
  Date : 2016-05-10 10:39:45
  Hash : 7aea7e05
  Message : Add EGLImplFactory. Also rename ImplFactory to GLImplFactory. This will allow us to use the same factory design pattern for EGL objects, and to use State helper classes to share data with Impls. BUG=angleproject:1363 BUG=angleproject:1369 Change-Id: I07a8fe40838d5d4ca32b04910c306edeab4d25a7 Reviewed-on: https://chromium-review.googlesource.com/342051 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• src/libANGLE/TransformFeedback.cpp

• //
  // 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.
  //
  
  #include "libANGLE/TransformFeedback.h"
  
  #include "libANGLE/Buffer.h"
  #include "libANGLE/Caps.h"
  #include "libANGLE/ContextState.h"
  #include "libANGLE/Program.h"
  #include "libANGLE/renderer/GLImplFactory.h"
  #include "libANGLE/renderer/TransformFeedbackImpl.h"
  
  namespace gl
  {
  
  TransformFeedback::TransformFeedback(rx::GLImplFactory *implFactory, GLuint id, const Caps &caps)
      : RefCountObject(id),
        mImplementation(implFactory->createTransformFeedback()),
        mLabel(),
        mActive(false),
        mPrimitiveMode(GL_NONE),
        mPaused(false),
        mProgram(nullptr),
        mGenericBuffer(),
        mIndexedBuffers(caps.maxTransformFeedbackSeparateAttributes)
  {
      ASSERT(mImplementation != nullptr);
  }
  
  TransformFeedback::~TransformFeedback()
  {
      if (mProgram)
      {
          mProgram->release();
          mProgram = nullptr;
      }
      mGenericBuffer.set(nullptr);
      for (size_t i = 0; i < mIndexedBuffers.size(); i++)
      {
          mIndexedBuffers[i].set(nullptr);
      }
  
      SafeDelete(mImplementation);
  }
  
  void TransformFeedback::setLabel(const std::string &label)
  {
      mLabel = label;
  }
  
  const std::string &TransformFeedback::getLabel() const
  {
      return mLabel;
  }
  
  void TransformFeedback::begin(GLenum primitiveMode, Program *program)
  {
      mActive = true;
      mPrimitiveMode = primitiveMode;
      mPaused = false;
      mImplementation->begin(primitiveMode);
      bindProgram(program);
  }
  
  void TransformFeedback::end()
  {
      mActive = false;
      mPrimitiveMode = GL_NONE;
      mPaused = false;
      mImplementation->end();
      if (mProgram)
      {
          mProgram->release();
          mProgram = nullptr;
      }
  }
  
  void TransformFeedback::pause()
  {
      mPaused = true;
      mImplementation->pause();
  }
  
  void TransformFeedback::resume()
  {
      mPaused = false;
      mImplementation->resume();
  }
  
  bool TransformFeedback::isActive() const
  {
      return mActive;
  }
  
  bool TransformFeedback::isPaused() const
  {
      return mPaused;
  }
  
  GLenum TransformFeedback::getPrimitiveMode() const
  {
      return mPrimitiveMode;
  }
  
  void TransformFeedback::bindProgram(Program *program)
  {
      if (mProgram != program)
      {
          if (mProgram != nullptr)
          {
              mProgram->release();
          }
          mProgram = program;
          if (mProgram != nullptr)
          {
              mProgram->addRef();
          }
      }
  }
  
  bool TransformFeedback::hasBoundProgram(GLuint program) const
  {
      return mProgram != nullptr && mProgram->id() == program;
  }
  
  void TransformFeedback::bindGenericBuffer(Buffer *buffer)
  {
      mGenericBuffer.set(buffer);
      mImplementation->bindGenericBuffer(mGenericBuffer);
  }
  
  void TransformFeedback::detachBuffer(GLuint bufferName)
  {
      for (size_t index = 0; index < mIndexedBuffers.size(); index++)
      {
          if (mIndexedBuffers[index].id() == bufferName)
          {
              mIndexedBuffers[index].set(nullptr);
              mImplementation->bindIndexedBuffer(index, mIndexedBuffers[index]);
          }
      }
  
      if (mGenericBuffer.id() == bufferName)
      {
          mGenericBuffer.set(nullptr);
          mImplementation->bindGenericBuffer(mGenericBuffer);
      }
  }
  
  const BindingPointer<Buffer> &TransformFeedback::getGenericBuffer() const
  {
      return mGenericBuffer;
  }
  
  void TransformFeedback::bindIndexedBuffer(size_t index, Buffer *buffer, size_t offset, size_t size)
  {
      ASSERT(index < mIndexedBuffers.size());
      mIndexedBuffers[index].set(buffer, offset, size);
      mImplementation->bindIndexedBuffer(index, mIndexedBuffers[index]);
  }
  
  const OffsetBindingPointer<Buffer> &TransformFeedback::getIndexedBuffer(size_t index) const
  {
      ASSERT(index < mIndexedBuffers.size());
      return mIndexedBuffers[index];
  }
  
  size_t TransformFeedback::getIndexedBufferCount() const
  {
      return mIndexedBuffers.size();
  }
  
  rx::TransformFeedbackImpl *TransformFeedback::getImplementation()
  {
      return mImplementation;
  }
  
  const rx::TransformFeedbackImpl *TransformFeedback::getImplementation() const
  {
      return mImplementation;
  }
  
  }