kc3-lang/angle/src/libANGLE/renderer/null/BufferNULL.cpp

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• Author : Corentin Wallez
  Date : 2017-10-17 15:55:40
  Hash : 336129f6
  Message : Use a packed enum for buffer targets. BUG=angleproject:2169 Change-Id: I4e08973d0e16404b7b8ee2f119e29ac502e28669 Reviewed-on: https://chromium-review.googlesource.com/723865 Commit-Queue: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

• src/libANGLE/renderer/null/BufferNULL.cpp

• //
  // Copyright 2016 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.
  //
  // BufferNULL.cpp:
  //    Implements the class methods for BufferNULL.
  //
  
  #include "libANGLE/renderer/null/BufferNULL.h"
  
  #include "common/debug.h"
  #include "common/utilities.h"
  #include "libANGLE/angletypes.h"
  #include "libANGLE/renderer/null/ContextNULL.h"
  
  namespace rx
  {
  
  BufferNULL::BufferNULL(const gl::BufferState &state, AllocationTrackerNULL *allocationTracker)
      : BufferImpl(state), mAllocationTracker(allocationTracker)
  {
      ASSERT(mAllocationTracker != nullptr);
  }
  
  BufferNULL::~BufferNULL()
  {
      bool memoryReleaseResult = mAllocationTracker->updateMemoryAllocation(mData.size(), 0);
      ASSERT(memoryReleaseResult);
  }
  
  gl::Error BufferNULL::setData(const gl::Context *context,
                                gl::BufferBinding target,
                                const void *data,
                                size_t size,
                                gl::BufferUsage usage)
  {
      if (!mAllocationTracker->updateMemoryAllocation(mData.size(), size))
      {
          return gl::OutOfMemory() << "Unable to allocate internal buffer storage.";
      }
  
      mData.resize(size, 0);
      if (size > 0 && data != nullptr)
      {
          memcpy(mData.data(), data, size);
      }
      return gl::NoError();
  }
  
  gl::Error BufferNULL::setSubData(const gl::Context *context,
                                   gl::BufferBinding target,
                                   const void *data,
                                   size_t size,
                                   size_t offset)
  {
      if (size > 0)
      {
          memcpy(mData.data() + offset, data, size);
      }
      return gl::NoError();
  }
  
  gl::Error BufferNULL::copySubData(const gl::Context *context,
                                    BufferImpl *source,
                                    GLintptr sourceOffset,
                                    GLintptr destOffset,
                                    GLsizeiptr size)
  {
      BufferNULL *sourceNULL = GetAs<BufferNULL>(source);
      if (size > 0)
      {
          memcpy(mData.data() + destOffset, sourceNULL->mData.data() + sourceOffset, size);
      }
      return gl::NoError();
  }
  
  gl::Error BufferNULL::map(const gl::Context *context, GLenum access, void **mapPtr)
  {
      *mapPtr = mData.data();
      return gl::NoError();
  }
  
  gl::Error BufferNULL::mapRange(const gl::Context *context,
                                 size_t offset,
                                 size_t length,
                                 GLbitfield access,
                                 void **mapPtr)
  {
      *mapPtr = mData.data() + offset;
      return gl::NoError();
  }
  
  gl::Error BufferNULL::unmap(const gl::Context *context, GLboolean *result)
  {
      *result = GL_TRUE;
      return gl::NoError();
  }
  
  gl::Error BufferNULL::getIndexRange(const gl::Context *context,
                                      GLenum type,
                                      size_t offset,
                                      size_t count,
                                      bool primitiveRestartEnabled,
                                      gl::IndexRange *outRange)
  {
      *outRange = gl::ComputeIndexRange(type, mData.data() + offset, count, primitiveRestartEnabled);
      return gl::NoError();
  }
  
  uint8_t *BufferNULL::getDataPtr()
  {
      return mData.data();
  }
  
  const uint8_t *BufferNULL::getDataPtr() const
  {
      return mData.data();
  }
  
  }  // namespace rx