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

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• Hash : 9d737966
  Author :
  Date : 2019-08-14T12:25:12
  

  Standardize copyright notices to project style
  
  For all "ANGLE Project" copyrights, standardize to the format specified
  by the style guide. Changes:
  - "Copyright (c)" and "Copyright(c)" changed to just "Copyright".
  - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1").
  - Fixed a small number of files that had no copyright date using the
    initial commit year from the version control history.
  - Fixed one instance of copyright being "The ANGLE Project" rather than
    "The ANGLE Project Authors"
  
  These changes are applied both to the copyright of source file, and
  where applicable to copyright statements that are generated by
  templates.
  
  BUG=angleproject:3811
  
  Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/gl/wgl/WindowSurfaceWGL.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.
  //
  
  // WindowSurfaceWGL.cpp: WGL implementation of egl::Surface for windows
  
  #include "libANGLE/renderer/gl/wgl/WindowSurfaceWGL.h"
  
  #include "common/debug.h"
  #include "libANGLE/renderer/gl/RendererGL.h"
  #include "libANGLE/renderer/gl/wgl/FunctionsWGL.h"
  #include "libANGLE/renderer/gl/wgl/wgl_utils.h"
  
  namespace rx
  {
  
  WindowSurfaceWGL::WindowSurfaceWGL(const egl::SurfaceState &state,
                                     EGLNativeWindowType window,
                                     int pixelFormat,
                                     const FunctionsWGL *functions,
                                     EGLint orientation)
      : SurfaceWGL(state),
        mPixelFormat(pixelFormat),
        mWindow(window),
        mDeviceContext(nullptr),
        mFunctionsWGL(functions),
        mSwapBehavior(0)
  {
      // EGL_ANGLE_surface_orientation is not supported for regular WGL window surfaces
      ASSERT(orientation == 0);
  }
  
  WindowSurfaceWGL::~WindowSurfaceWGL()
  {
      ReleaseDC(mWindow, mDeviceContext);
      mDeviceContext = nullptr;
  }
  
  egl::Error WindowSurfaceWGL::initialize(const egl::Display *display)
  {
      mDeviceContext = GetDC(mWindow);
      if (!mDeviceContext)
      {
          return egl::EglBadNativeWindow()
                 << "Failed to get the device context from the native window, "
                 << gl::FmtErr(GetLastError());
      }
  
      // Require that the pixel format for this window has not been set yet or is equal to the
      // Display's pixel format.
      int windowPixelFormat = GetPixelFormat(mDeviceContext);
      if (windowPixelFormat == 0)
      {
          PIXELFORMATDESCRIPTOR pixelFormatDescriptor = {0};
          if (!DescribePixelFormat(mDeviceContext, mPixelFormat, sizeof(pixelFormatDescriptor),
                                   &pixelFormatDescriptor))
          {
              return egl::EglBadNativeWindow()
                     << "Failed to DescribePixelFormat, " << gl::FmtErr(GetLastError());
          }
  
          if (!SetPixelFormat(mDeviceContext, mPixelFormat, &pixelFormatDescriptor))
          {
              return egl::EglNotInitialized()
                     << "Failed to set the pixel format on the device context, "
                     << gl::FmtErr(GetLastError());
          }
      }
      else if (windowPixelFormat != mPixelFormat)
      {
          return egl::EglNotInitialized()
                 << "Pixel format of the NativeWindow and NativeDisplayType must match.";
      }
  
      // Check for the swap behavior of this pixel format
      switch (
          wgl::QueryWGLFormatAttrib(mDeviceContext, mPixelFormat, WGL_SWAP_METHOD_ARB, mFunctionsWGL))
      {
          case WGL_SWAP_COPY_ARB:
              mSwapBehavior = EGL_BUFFER_PRESERVED;
              break;
  
          case WGL_SWAP_EXCHANGE_ARB:
          case WGL_SWAP_UNDEFINED_ARB:
          default:
              mSwapBehavior = EGL_BUFFER_DESTROYED;
              break;
      }
  
      return egl::NoError();
  }
  
  egl::Error WindowSurfaceWGL::makeCurrent(const gl::Context *context)
  {
      return egl::NoError();
  }
  
  egl::Error WindowSurfaceWGL::swap(const gl::Context *context)
  {
      if (!mFunctionsWGL->swapBuffers(mDeviceContext))
      {
          // TODO: What error type here?
          return egl::EglContextLost() << "Failed to swap buffers on the child window.";
      }
  
      return egl::NoError();
  }
  
  egl::Error WindowSurfaceWGL::postSubBuffer(const gl::Context *context,
                                             EGLint x,
                                             EGLint y,
                                             EGLint width,
                                             EGLint height)
  {
      UNIMPLEMENTED();
      return egl::NoError();
  }
  
  egl::Error WindowSurfaceWGL::querySurfacePointerANGLE(EGLint attribute, void **value)
  {
      *value = nullptr;
      return egl::NoError();
  }
  
  egl::Error WindowSurfaceWGL::bindTexImage(const gl::Context *context,
                                            gl::Texture *texture,
                                            EGLint buffer)
  {
      UNIMPLEMENTED();
      return egl::NoError();
  }
  
  egl::Error WindowSurfaceWGL::releaseTexImage(const gl::Context *context, EGLint buffer)
  {
      UNIMPLEMENTED();
      return egl::NoError();
  }
  
  void WindowSurfaceWGL::setSwapInterval(EGLint interval)
  {
      if (mFunctionsWGL->swapIntervalEXT)
      {
          mFunctionsWGL->swapIntervalEXT(interval);
      }
  }
  
  EGLint WindowSurfaceWGL::getWidth() const
  {
      RECT rect;
      if (!GetClientRect(mWindow, &rect))
      {
          return 0;
      }
      return rect.right - rect.left;
  }
  
  EGLint WindowSurfaceWGL::getHeight() const
  {
      RECT rect;
      if (!GetClientRect(mWindow, &rect))
      {
          return 0;
      }
      return rect.bottom - rect.top;
  }
  
  EGLint WindowSurfaceWGL::isPostSubBufferSupported() const
  {
      // PostSubBuffer extension not exposed on WGL.
      UNIMPLEMENTED();
      return EGL_FALSE;
  }
  
  EGLint WindowSurfaceWGL::getSwapBehavior() const
  {
      return mSwapBehavior;
  }
  
  HDC WindowSurfaceWGL::getDC() const
  {
      return mDeviceContext;
  }
  }  // namespace rx
  

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