kc3-lang/angle/src/libANGLE/renderer/gl/wgl/wgl_utils.cpp

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• Hash : a6206854
  Author :
  Date : 2019-10-24T12:55:09
  

  Enable "-Wmissing-field-initializers".
  
  This is another warning required by Skia. This one didn't find
  anything that surprising. Enabling the warning does help enforce
  code consistency and avoids a bit of possible undefined behaviour.
  
  Bug: angleproject:4046
  Change-Id: Ifec7f4afad49cd820bf3c0a79df3f46559473ee2
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1877477
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/gl/wgl/wgl_utils.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.
  //
  
  // wgl_utils.cpp: Utility routines specific to the WGL->EGL implementation.
  
  #include "libANGLE/renderer/gl/wgl/wgl_utils.h"
  
  #include "libANGLE/renderer/gl/wgl/FunctionsWGL.h"
  
  namespace rx
  {
  
  namespace wgl
  {
  
  PIXELFORMATDESCRIPTOR GetDefaultPixelFormatDescriptor()
  {
      PIXELFORMATDESCRIPTOR pixelFormatDescriptor = {};
      pixelFormatDescriptor.nSize                 = sizeof(pixelFormatDescriptor);
      pixelFormatDescriptor.nVersion              = 1;
      pixelFormatDescriptor.dwFlags =
          PFD_DRAW_TO_WINDOW | PFD_GENERIC_ACCELERATED | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
      pixelFormatDescriptor.iPixelType   = PFD_TYPE_RGBA;
      pixelFormatDescriptor.cColorBits   = 24;
      pixelFormatDescriptor.cAlphaBits   = 8;
      pixelFormatDescriptor.cDepthBits   = 24;
      pixelFormatDescriptor.cStencilBits = 8;
      pixelFormatDescriptor.iLayerType   = PFD_MAIN_PLANE;
  
      return pixelFormatDescriptor;
  }
  
  std::vector<int> GetDefaultPixelFormatAttributes(bool preservedSwap)
  {
      std::vector<int> attribs;
      attribs.push_back(WGL_DRAW_TO_WINDOW_ARB);
      attribs.push_back(TRUE);
  
      attribs.push_back(WGL_ACCELERATION_ARB);
      attribs.push_back(WGL_FULL_ACCELERATION_ARB);
  
      attribs.push_back(WGL_SUPPORT_OPENGL_ARB);
      attribs.push_back(TRUE);
  
      attribs.push_back(WGL_DOUBLE_BUFFER_ARB);
      attribs.push_back(TRUE);
  
      attribs.push_back(WGL_PIXEL_TYPE_ARB);
      attribs.push_back(WGL_TYPE_RGBA_ARB);
  
      attribs.push_back(WGL_COLOR_BITS_ARB);
      attribs.push_back(24);
  
      attribs.push_back(WGL_ALPHA_BITS_ARB);
      attribs.push_back(8);
  
      attribs.push_back(WGL_DEPTH_BITS_ARB);
      attribs.push_back(24);
  
      attribs.push_back(WGL_STENCIL_BITS_ARB);
      attribs.push_back(8);
  
      attribs.push_back(WGL_SWAP_METHOD_ARB);
      attribs.push_back(preservedSwap ? WGL_SWAP_COPY_ARB : WGL_SWAP_UNDEFINED_ARB);
  
      attribs.push_back(0);
  
      return attribs;
  }
  
  int QueryWGLFormatAttrib(HDC dc, int format, int attribName, const FunctionsWGL *functions)
  {
      int result = 0;
      if (functions->getPixelFormatAttribivARB == nullptr ||
          !functions->getPixelFormatAttribivARB(dc, format, 0, 1, &attribName, &result))
      {
          return 0;
      }
      return result;
  }
  }  // namespace wgl
  
  }  // namespace rx
  

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