kc3-lang/angle/src/libANGLE/renderer/gl/wgl/PbufferSurfaceWGL.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/PbufferSurfaceWGL.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.
  //
  
  // SurfaceWGL.cpp: WGL implementation of egl::Surface
  
  #include "libANGLE/renderer/gl/wgl/PbufferSurfaceWGL.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
  {
  
  PbufferSurfaceWGL::PbufferSurfaceWGL(const egl::SurfaceState &state,
                                       EGLint width,
                                       EGLint height,
                                       EGLenum textureFormat,
                                       EGLenum textureTarget,
                                       bool largest,
                                       int pixelFormat,
                                       HDC deviceContext,
                                       const FunctionsWGL *functions)
      : SurfaceWGL(state),
        mWidth(width),
        mHeight(height),
        mLargest(largest),
        mTextureFormat(textureFormat),
        mTextureTarget(textureTarget),
        mPixelFormat(pixelFormat),
        mParentDeviceContext(deviceContext),
        mPbuffer(nullptr),
        mPbufferDeviceContext(nullptr),
        mFunctionsWGL(functions)
  {}
  
  PbufferSurfaceWGL::~PbufferSurfaceWGL()
  {
      mFunctionsWGL->releasePbufferDCARB(mPbuffer, mPbufferDeviceContext);
      mPbufferDeviceContext = nullptr;
  
      mFunctionsWGL->destroyPbufferARB(mPbuffer);
      mPbuffer = nullptr;
  }
  
  static int GetWGLTextureType(EGLenum eglTextureType)
  {
      switch (eglTextureType)
      {
          case EGL_NO_TEXTURE:
              return WGL_NO_TEXTURE_ARB;
          case EGL_TEXTURE_RGB:
              return WGL_TEXTURE_RGB_ARB;
          case EGL_TEXTURE_RGBA:
              return WGL_TEXTURE_RGBA_ARB;
          default:
              UNREACHABLE();
              return 0;
      }
  }
  
  static int GetWGLTextureTarget(EGLenum eglTextureTarget)
  {
      switch (eglTextureTarget)
      {
          case EGL_NO_TEXTURE:
              return WGL_NO_TEXTURE_ARB;
          case EGL_TEXTURE_2D:
              return WGL_TEXTURE_2D_ARB;
          default:
              UNREACHABLE();
              return 0;
      }
  }
  
  egl::Error PbufferSurfaceWGL::initialize(const egl::Display *display)
  {
      const int pbufferCreationAttributes[] = {
          WGL_PBUFFER_LARGEST_ARB,
          mLargest ? 1 : 0,
          WGL_TEXTURE_FORMAT_ARB,
          GetWGLTextureType(mTextureFormat),
          WGL_TEXTURE_TARGET_ARB,
          GetWGLTextureTarget(mTextureTarget),
          0,
          0,
      };
  
      mPbuffer = mFunctionsWGL->createPbufferARB(mParentDeviceContext, mPixelFormat, mWidth, mHeight,
                                                 pbufferCreationAttributes);
      if (mPbuffer == nullptr)
      {
          DWORD error = GetLastError();
          return egl::EglBadAlloc() << "Failed to create a native WGL pbuffer, "
                                    << gl::FmtErr(HRESULT_CODE(error));
      }
  
      // The returned pbuffer may not be as large as requested, update the size members.
      if (mFunctionsWGL->queryPbufferARB(mPbuffer, WGL_PBUFFER_WIDTH_ARB, &mWidth) != TRUE ||
          mFunctionsWGL->queryPbufferARB(mPbuffer, WGL_PBUFFER_HEIGHT_ARB, &mHeight) != TRUE)
      {
          DWORD error = GetLastError();
          return egl::EglBadAlloc() << "Failed to query the WGL pbuffer's dimensions, "
                                    << gl::FmtErr(HRESULT_CODE(error));
      }
  
      mPbufferDeviceContext = mFunctionsWGL->getPbufferDCARB(mPbuffer);
      if (mPbufferDeviceContext == nullptr)
      {
          mFunctionsWGL->destroyPbufferARB(mPbuffer);
          mPbuffer = nullptr;
  
          DWORD error = GetLastError();
          return egl::EglBadAlloc() << "Failed to get the WGL pbuffer handle, "
                                    << gl::FmtErr(HRESULT_CODE(error));
      }
  
      return egl::NoError();
  }
  
  egl::Error PbufferSurfaceWGL::makeCurrent(const gl::Context *context)
  {
      return egl::NoError();
  }
  
  egl::Error PbufferSurfaceWGL::swap(const gl::Context *context)
  {
      return egl::NoError();
  }
  
  egl::Error PbufferSurfaceWGL::postSubBuffer(const gl::Context *context,
                                              EGLint x,
                                              EGLint y,
                                              EGLint width,
                                              EGLint height)
  {
      return egl::NoError();
  }
  
  egl::Error PbufferSurfaceWGL::querySurfacePointerANGLE(EGLint attribute, void **value)
  {
      *value = nullptr;
      return egl::NoError();
  }
  
  static int GetWGLBufferBindTarget(EGLint buffer)
  {
      switch (buffer)
      {
          case EGL_BACK_BUFFER:
              return WGL_BACK_LEFT_ARB;
          default:
              UNREACHABLE();
              return 0;
      }
  }
  
  egl::Error PbufferSurfaceWGL::bindTexImage(const gl::Context *context,
                                             gl::Texture *texture,
                                             EGLint buffer)
  {
      if (!mFunctionsWGL->bindTexImageARB(mPbuffer, GetWGLBufferBindTarget(buffer)))
      {
          DWORD error = GetLastError();
          return egl::EglBadSurface()
                 << "Failed to bind native wgl pbuffer, " << gl::FmtErr(HRESULT_CODE(error));
      }
  
      return egl::NoError();
  }
  
  egl::Error PbufferSurfaceWGL::releaseTexImage(const gl::Context *context, EGLint buffer)
  {
      if (!mFunctionsWGL->releaseTexImageARB(mPbuffer, GetWGLBufferBindTarget(buffer)))
      {
          DWORD error = GetLastError();
          return egl::EglBadSurface()
                 << "Failed to unbind native wgl pbuffer, " << gl::FmtErr(HRESULT_CODE(error));
      }
  
      return egl::NoError();
  }
  
  void PbufferSurfaceWGL::setSwapInterval(EGLint interval) {}
  
  EGLint PbufferSurfaceWGL::getWidth() const
  {
      return mWidth;
  }
  
  EGLint PbufferSurfaceWGL::getHeight() const
  {
      return mHeight;
  }
  
  EGLint PbufferSurfaceWGL::isPostSubBufferSupported() const
  {
      return EGL_FALSE;
  }
  
  EGLint PbufferSurfaceWGL::getSwapBehavior() const
  {
      return EGL_BUFFER_PRESERVED;
  }
  
  HDC PbufferSurfaceWGL::getDC() const
  {
      return mPbufferDeviceContext;
  }
  }  // namespace rx
  

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