kc3-lang/angle/src/libANGLE/renderer/gl/RenderbufferGL.cpp

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• Author : Cooper Partin
  Date : 2015-08-12 10:56:50
  Hash : 4d61f7ed
  Message : Reland Fixed compiler warning C4267 'conversion from 'size_t' to 'type', possible loss of data' Additional warnings found with more testing and added C4267 warning disable only for angle_libpng BUG=angleproject:1120 Change-Id: Ic403dcff5a8018056fa51a8c408e64207f3362eb Reviewed-on: https://chromium-review.googlesource.com/293028 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>

• src/libANGLE/renderer/gl/RenderbufferGL.cpp

• //
  // Copyright 2015 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.
  //
  
  // RenderbufferGL.cpp: Implements the class methods for RenderbufferGL.
  
  #include "libANGLE/renderer/gl/RenderbufferGL.h"
  
  #include "common/debug.h"
  #include "libANGLE/Caps.h"
  #include "libANGLE/angletypes.h"
  #include "libANGLE/renderer/gl/FunctionsGL.h"
  #include "libANGLE/renderer/gl/StateManagerGL.h"
  #include "libANGLE/renderer/gl/formatutilsgl.h"
  #include "libANGLE/renderer/gl/renderergl_utils.h"
  
  namespace rx
  {
  RenderbufferGL::RenderbufferGL(const FunctionsGL *functions,
                                 const WorkaroundsGL &workarounds,
                                 StateManagerGL *stateManager,
                                 const gl::TextureCapsMap &textureCaps)
      : RenderbufferImpl(),
        mFunctions(functions),
        mWorkarounds(workarounds),
        mStateManager(stateManager),
        mTextureCaps(textureCaps),
        mRenderbufferID(0)
  {
      mFunctions->genRenderbuffers(1, &mRenderbufferID);
      mStateManager->bindRenderbuffer(GL_RENDERBUFFER, mRenderbufferID);
  }
  
  RenderbufferGL::~RenderbufferGL()
  {
      mStateManager->deleteRenderbuffer(mRenderbufferID);
      mRenderbufferID = 0;
  }
  
  gl::Error RenderbufferGL::setStorage(GLenum internalformat, size_t width, size_t height)
  {
      mStateManager->bindRenderbuffer(GL_RENDERBUFFER, mRenderbufferID);
  
      nativegl::RenderbufferFormat renderbufferFormat =
          nativegl::GetRenderbufferFormat(mFunctions, mWorkarounds, internalformat);
      mFunctions->renderbufferStorage(GL_RENDERBUFFER, renderbufferFormat.internalFormat,
                                      static_cast<GLsizei>(width), static_cast<GLsizei>(height));
  
      return gl::Error(GL_NO_ERROR);
  }
  
  gl::Error RenderbufferGL::setStorageMultisample(size_t samples, GLenum internalformat, size_t width, size_t height)
  {
      mStateManager->bindRenderbuffer(GL_RENDERBUFFER, mRenderbufferID);
  
      nativegl::RenderbufferFormat renderbufferFormat =
          nativegl::GetRenderbufferFormat(mFunctions, mWorkarounds, internalformat);
      mFunctions->renderbufferStorageMultisample(
          GL_RENDERBUFFER, static_cast<GLsizei>(samples), renderbufferFormat.internalFormat,
          static_cast<GLsizei>(width), static_cast<GLsizei>(height));
  
      const gl::TextureCaps &formatCaps = mTextureCaps.get(internalformat);
      if (samples > formatCaps.getMaxSamples())
      {
          // Before version 4.2, it is unknown if the specific internal format can support the requested number
          // of samples.  It is expected that GL_OUT_OF_MEMORY is returned if the renderbuffer cannot be created.
          GLenum error = GL_NO_ERROR;
          do
          {
              error = mFunctions->getError();
              if (error == GL_OUT_OF_MEMORY)
              {
                  return gl::Error(GL_OUT_OF_MEMORY);
              }
  
              ASSERT(error == GL_NO_ERROR);
          } while (error != GL_NO_ERROR);
      }
  
      return gl::Error(GL_NO_ERROR);
  }
  
  gl::Error RenderbufferGL::setStorageEGLImageTarget(egl::Image *image)
  {
      UNIMPLEMENTED();
      return gl::Error(GL_INVALID_OPERATION);
  }
  
  GLuint RenderbufferGL::getRenderbufferID() const
  {
      return mRenderbufferID;
  }
  
  }