kc3-lang/angle/src/libANGLE/Surface.cpp

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• Hash : 8cf813c7
  Author :
  Date : 2015-05-04T12:55:18
  

  Query attachment render targets from Impl class.
  
  *re-land with fix for D3D9*
  
  This allows us to eradicate the GetAttachmentRenderTarget methods.
  This improves potential performance, at the cost of exposing a
  Renderer-specific function at the API object level.
  
  BUG=angleproject:963
  
  Change-Id: Iee9f985ddaed668df0c622228004b348eb4d2ea8
  Reviewed-on: https://chromium-review.googlesource.com/269006
  Tested-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/Surface.cpp

• //
  // Copyright (c) 2002-2014 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.
  //
  
  // Surface.cpp: Implements the egl::Surface class, representing a drawing surface
  // such as the client area of a window, including any back buffers.
  // Implements EGLSurface and related functionality. [EGL 1.4] section 2.2 page 3.
  
  #include "libANGLE/Surface.h"
  
  #include "libANGLE/Config.h"
  #include "libANGLE/Texture.h"
  
  #include <EGL/eglext.h>
  
  namespace egl
  {
  
  Surface::Surface(rx::SurfaceImpl *impl, EGLint surfaceType, const egl::Config *config, const AttributeMap &attributes)
      : FramebufferAttachmentObject(0), // id unused
        mImplementation(impl),
        mType(surfaceType),
        mConfig(config),
        mPostSubBufferRequested(false),
        mFixedSize(false),
        mFixedWidth(0),
        mFixedHeight(0),
        mTextureFormat(EGL_NO_TEXTURE),
        mTextureTarget(EGL_NO_TEXTURE),
        // FIXME: Determine actual pixel aspect ratio
        mPixelAspectRatio(static_cast<EGLint>(1.0 * EGL_DISPLAY_SCALING)),
        mRenderBuffer(EGL_BACK_BUFFER),
        mSwapBehavior(EGL_BUFFER_PRESERVED),
        mTexture(NULL)
  {
      addRef();
  
      mPostSubBufferRequested = (attributes.get(EGL_POST_SUB_BUFFER_SUPPORTED_NV, EGL_FALSE) == EGL_TRUE);
  
      mFixedSize = (attributes.get(EGL_FIXED_SIZE_ANGLE, EGL_FALSE) == EGL_TRUE);
      if (mFixedSize)
      {
          mFixedWidth = attributes.get(EGL_WIDTH, 0);
          mFixedHeight = attributes.get(EGL_HEIGHT, 0);
      }
  
      if (mType != EGL_WINDOW_BIT)
      {
          mTextureFormat = attributes.get(EGL_TEXTURE_FORMAT, EGL_NO_TEXTURE);
          mTextureTarget = attributes.get(EGL_TEXTURE_TARGET, EGL_NO_TEXTURE);
      }
  }
  
  Surface::~Surface()
  {
      if (mTexture)
      {
          if (mImplementation)
          {
              mImplementation->releaseTexImage(EGL_BACK_BUFFER);
          }
          mTexture->releaseTexImage();
          mTexture = NULL;
      }
  
      SafeDelete(mImplementation);
  }
  
  EGLint Surface::getType() const
  {
      return mType;
  }
  
  Error Surface::swap()
  {
      return mImplementation->swap();
  }
  
  Error Surface::postSubBuffer(EGLint x, EGLint y, EGLint width, EGLint height)
  {
      return mImplementation->postSubBuffer(x, y, width, height);
  }
  
  Error Surface::querySurfacePointerANGLE(EGLint attribute, void **value)
  {
      return mImplementation->querySurfacePointerANGLE(attribute, value);
  }
  
  EGLint Surface::isPostSubBufferSupported() const
  {
      return mPostSubBufferRequested && mImplementation->isPostSubBufferSupported();
  }
  
  void Surface::setSwapInterval(EGLint interval)
  {
      mImplementation->setSwapInterval(interval);
  }
  
  const Config *Surface::getConfig() const
  {
      return mConfig;
  }
  
  EGLint Surface::getPixelAspectRatio() const
  {
      return mPixelAspectRatio;
  }
  
  EGLenum Surface::getRenderBuffer() const
  {
      return mRenderBuffer;
  }
  
  EGLenum Surface::getSwapBehavior() const
  {
      return mSwapBehavior;
  }
  
  EGLenum Surface::getTextureFormat() const
  {
      return mTextureFormat;
  }
  
  EGLenum Surface::getTextureTarget() const
  {
      return mTextureTarget;
  }
  
  EGLint Surface::isFixedSize() const
  {
      return mFixedSize;
  }
  
  EGLint Surface::getWidth() const
  {
      return mFixedSize ? mFixedWidth : mImplementation->getWidth();
  }
  
  EGLint Surface::getHeight() const
  {
      return mFixedSize ? mFixedHeight : mImplementation->getHeight();
  }
  
  Error Surface::bindTexImage(gl::Texture *texture, EGLint buffer)
  {
      ASSERT(!mTexture);
  
      texture->bindTexImage(this);
      mTexture = texture;
      return mImplementation->bindTexImage(buffer);
  }
  
  Error Surface::releaseTexImage(EGLint buffer)
  {
      ASSERT(mTexture);
      gl::Texture *boundTexture = mTexture;
      mTexture = NULL;
  
      boundTexture->releaseTexImage();
      return mImplementation->releaseTexImage(buffer);
  }
  
  GLenum Surface::getAttachmentInternalFormat(const gl::FramebufferAttachment::Target &target) const
  {
      const egl::Config *config = getConfig();
      return (target.binding() == GL_BACK ? config->renderTargetFormat : config->depthStencilFormat);
  }
  
  GLsizei Surface::getAttachmentSamples(const gl::FramebufferAttachment::Target &target) const
  {
      return getConfig()->samples;
  }
  
  }
  

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