The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/layers/opengl/CompositingRenderTargetOGL.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,102 @@
     1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
     1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +#include "CompositingRenderTargetOGL.h"
    1.10 +#include "GLContext.h"
    1.11 +#include "GLReadTexImageHelper.h"
    1.12 +#include "mozilla/gfx/2D.h"
    1.13 +
    1.14 +using namespace mozilla;
    1.15 +using namespace mozilla::gfx;
    1.16 +using namespace mozilla::gl;
    1.17 +using namespace mozilla::layers;
    1.18 +
    1.19 +CompositingRenderTargetOGL::~CompositingRenderTargetOGL()
    1.20 +{
    1.21 +  mGL->fDeleteTextures(1, &mTextureHandle);
    1.22 +  mGL->fDeleteFramebuffers(1, &mFBO);
    1.23 +}
    1.24 +
    1.25 +void
    1.26 +CompositingRenderTargetOGL::BindTexture(GLenum aTextureUnit, GLenum aTextureTarget)
    1.27 +{
    1.28 +  MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
    1.29 +  MOZ_ASSERT(mTextureHandle != 0);
    1.30 +  mGL->fActiveTexture(aTextureUnit);
    1.31 +  mGL->fBindTexture(aTextureTarget, mTextureHandle);
    1.32 +}
    1.33 +
    1.34 +void
    1.35 +CompositingRenderTargetOGL::BindRenderTarget()
    1.36 +{
    1.37 +  if (mInitParams.mStatus != InitParams::INITIALIZED) {
    1.38 +    InitializeImpl();
    1.39 +  } else {
    1.40 +    MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
    1.41 +    mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mFBO);
    1.42 +    GLenum result = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
    1.43 +    if (result != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
    1.44 +      // The main framebuffer (0) of non-offscreen contexts
    1.45 +      // might be backed by a EGLSurface that needs to be renewed.
    1.46 +      if (mFBO == 0 && !mGL->IsOffscreen()) {
    1.47 +        mGL->RenewSurface();
    1.48 +        result = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
    1.49 +      }
    1.50 +      if (result != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
    1.51 +        nsAutoCString msg;
    1.52 +        msg.AppendPrintf("Framebuffer not complete -- CheckFramebufferStatus returned 0x%x, "
    1.53 +                         "GLContext=%p, IsOffscreen()=%d, mFBO=%d, aFBOTextureTarget=0x%x, "
    1.54 +                         "aRect.width=%d, aRect.height=%d",
    1.55 +                         result, mGL, mGL->IsOffscreen(), mFBO, mInitParams.mFBOTextureTarget,
    1.56 +                         mInitParams.mSize.width, mInitParams.mSize.height);
    1.57 +        NS_WARNING(msg.get());
    1.58 +      }
    1.59 +    }
    1.60 +
    1.61 +    mCompositor->PrepareViewport(mInitParams.mSize, mTransform);
    1.62 +  }
    1.63 +}
    1.64 +
    1.65 +#ifdef MOZ_DUMP_PAINTING
    1.66 +TemporaryRef<DataSourceSurface>
    1.67 +CompositingRenderTargetOGL::Dump(Compositor* aCompositor)
    1.68 +{
    1.69 +  MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
    1.70 +  CompositorOGL* compositorOGL = static_cast<CompositorOGL*>(aCompositor);
    1.71 +  return ReadBackSurface(mGL, mTextureHandle, true, compositorOGL->GetFBOFormat());
    1.72 +}
    1.73 +#endif
    1.74 +
    1.75 +void
    1.76 +CompositingRenderTargetOGL::InitializeImpl()
    1.77 +{
    1.78 +  MOZ_ASSERT(mInitParams.mStatus == InitParams::READY);
    1.79 +
    1.80 +  mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mFBO);
    1.81 +  mGL->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER,
    1.82 +                              LOCAL_GL_COLOR_ATTACHMENT0,
    1.83 +                              mInitParams.mFBOTextureTarget,
    1.84 +                              mTextureHandle,
    1.85 +                              0);
    1.86 +
    1.87 +  // Making this call to fCheckFramebufferStatus prevents a crash on
    1.88 +  // PowerVR. See bug 695246.
    1.89 +  GLenum result = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
    1.90 +  if (result != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
    1.91 +    nsAutoCString msg;
    1.92 +    msg.AppendPrintf("Framebuffer not complete -- error 0x%x, aFBOTextureTarget 0x%x, mFBO %d, mTextureHandle %d, aRect.width %d, aRect.height %d",
    1.93 +                      result, mInitParams.mFBOTextureTarget, mFBO, mTextureHandle, mInitParams.mSize.width, mInitParams.mSize.height);
    1.94 +    NS_ERROR(msg.get());
    1.95 +  }
    1.96 +
    1.97 +  mCompositor->PrepareViewport(mInitParams.mSize, mTransform);
    1.98 +  mGL->fScissor(0, 0, mInitParams.mSize.width, mInitParams.mSize.height);
    1.99 +  if (mInitParams.mInit == INIT_MODE_CLEAR) {
   1.100 +    mGL->fClearColor(0.0, 0.0, 0.0, 0.0);
   1.101 +    mGL->fClear(LOCAL_GL_COLOR_BUFFER_BIT);
   1.102 +  }
   1.103 +
   1.104 +  mInitParams.mStatus = InitParams::INITIALIZED;
   1.105 +}