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

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• Hash : b8353b01
  Author :
  Date : 2017-01-25T12:57:21
  

  Vulkan: Simple buffer creation.
  
  This is necessary to initialize vertex arrays.
  
  BUG=angleproject:1579
  
  Change-Id: Ic5a232d5cdfaa75b41241901de842e62ff3b173f
  Reviewed-on: https://chromium-review.googlesource.com/406645
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  

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• 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"
  
  namespace rx
  {
  
  BufferNULL::BufferNULL(const gl::BufferState &state) : BufferImpl(state)
  {
  }
  
  BufferNULL::~BufferNULL()
  {
  }
  
  gl::Error BufferNULL::setData(ContextImpl *context,
                                GLenum target,
                                const void *data,
                                size_t size,
                                GLenum usage)
  {
      mData.resize(size, 0);
      if (size > 0 && data != nullptr)
      {
          memcpy(mData.data(), data, size);
      }
      return gl::NoError();
  }
  
  gl::Error BufferNULL::setSubData(ContextImpl *context,
                                   GLenum 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(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(GLenum access, GLvoid **mapPtr)
  {
      *mapPtr = mData.data();
      return gl::NoError();
  }
  
  gl::Error BufferNULL::mapRange(size_t offset, size_t length, GLbitfield access, GLvoid **mapPtr)
  {
      *mapPtr = mData.data() + offset;
      return gl::NoError();
  }
  
  gl::Error BufferNULL::unmap(GLboolean *result)
  {
      *result = GL_TRUE;
      return gl::NoError();
  }
  
  gl::Error BufferNULL::getIndexRange(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();
  }
  
  }  // namespace rx
  

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