kc3-lang/angle/src/libANGLE/renderer/d3d/RenderbufferD3D.cpp

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• Hash : 362876b1
  Author :
  Date : 2016-06-16T14:46:59
  

  Cache Framebuffer completeness.
  
  Improves performance on the render-to-texture microbenchmark
  by ~3x on the OpenGL back-end. Wipes out several of the top profling
  hotspots on that benchmark.
  
  BUG=angleproject:1388
  
  Change-Id: I6a35a0b435b2ed3c83d32acdb9df090df98214ad
  Reviewed-on: https://chromium-review.googlesource.com/348957
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Corentin Wallez <cwallez@chromium.org>
  

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• src/libANGLE/renderer/d3d/RenderbufferD3D.cpp

• //
  // Copyright (c) 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.
  //
  
  // RenderbufferD3d.cpp: Implements the RenderbufferD3D class, a specialization of RenderbufferImpl
  
  
  #include "libANGLE/renderer/d3d/RenderbufferD3D.h"
  
  #include "libANGLE/Image.h"
  #include "libANGLE/renderer/d3d/EGLImageD3D.h"
  #include "libANGLE/renderer/d3d/RendererD3D.h"
  #include "libANGLE/renderer/d3d/RenderTargetD3D.h"
  
  namespace rx
  {
  RenderbufferD3D::RenderbufferD3D(RendererD3D *renderer)
      : mRenderer(renderer), mRenderTarget(nullptr), mImage(nullptr)
  {
  }
  
  RenderbufferD3D::~RenderbufferD3D()
  {
      SafeDelete(mRenderTarget);
      mImage = nullptr;
  }
  
  gl::Error RenderbufferD3D::setStorage(GLenum internalformat, size_t width, size_t height)
  {
      return setStorageMultisample(0, internalformat, width, height);
  }
  
  gl::Error RenderbufferD3D::setStorageMultisample(size_t samples, GLenum internalformat, size_t width, size_t height)
  {
      // If the renderbuffer parameters are queried, the calling function
      // will expect one of the valid renderbuffer formats for use in
      // glRenderbufferStorage, but we should create depth and stencil buffers
      // as DEPTH24_STENCIL8
      GLenum creationFormat = internalformat;
      if (internalformat == GL_DEPTH_COMPONENT16 || internalformat == GL_STENCIL_INDEX8)
      {
          creationFormat = GL_DEPTH24_STENCIL8_OES;
      }
  
      // ANGLE_framebuffer_multisample states GL_OUT_OF_MEMORY is generated on a failure to create
      // the specified storage.
      // Because ES 3.0 already knows the exact number of supported samples, it would already have been
      // validated and generated GL_INVALID_VALUE.
      const gl::TextureCaps &formatCaps = mRenderer->getNativeTextureCaps().get(creationFormat);
      if (samples > formatCaps.getMaxSamples())
      {
          return gl::Error(GL_OUT_OF_MEMORY, "Renderbuffer format does not support %u samples, %u is the maximum.",
                           samples, formatCaps.getMaxSamples());
      }
  
      RenderTargetD3D *newRT = NULL;
      ANGLE_TRY(mRenderer->createRenderTarget(static_cast<int>(width), static_cast<int>(height),
                                              creationFormat, static_cast<GLsizei>(samples), &newRT));
  
      SafeDelete(mRenderTarget);
      mImage        = nullptr;
      mRenderTarget = newRT;
  
      return gl::NoError();
  }
  
  gl::Error RenderbufferD3D::setStorageEGLImageTarget(egl::Image *image)
  {
      mImage = GetImplAs<EGLImageD3D>(image);
      SafeDelete(mRenderTarget);
  
      return gl::NoError();
  }
  
  gl::Error RenderbufferD3D::getRenderTarget(RenderTargetD3D **outRenderTarget)
  {
      if (mImage)
      {
          return mImage->getRenderTarget(outRenderTarget);
      }
      else
      {
          *outRenderTarget = mRenderTarget;
          return gl::NoError();
      }
  }
  
  gl::Error RenderbufferD3D::getAttachmentRenderTarget(const gl::FramebufferAttachment::Target &target,
                                                       FramebufferAttachmentRenderTarget **rtOut)
  {
      return getRenderTarget(reinterpret_cast<RenderTargetD3D **>(rtOut));
  }
  
  }
  

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