The Tor Browser: gfx/layers/opengl/CompositingRenderTargetOGL.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "CompositingRenderTargetOGL.h"

     7 #include "GLContext.h"

     8 #include "GLReadTexImageHelper.h"

     9 #include "mozilla/gfx/2D.h"

    11 using namespace mozilla;

    12 using namespace mozilla::gfx;

    13 using namespace mozilla::gl;

    14 using namespace mozilla::layers;

    16 CompositingRenderTargetOGL::~CompositingRenderTargetOGL()

    17 {

    18   mGL->fDeleteTextures(1, &mTextureHandle);

    19   mGL->fDeleteFramebuffers(1, &mFBO);

    20 }

    22 void

    23 CompositingRenderTargetOGL::BindTexture(GLenum aTextureUnit, GLenum aTextureTarget)

    24 {

    25   MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);

    26   MOZ_ASSERT(mTextureHandle != 0);

    27   mGL->fActiveTexture(aTextureUnit);

    28   mGL->fBindTexture(aTextureTarget, mTextureHandle);

    29 }

    31 void

    32 CompositingRenderTargetOGL::BindRenderTarget()

    33 {

    34   if (mInitParams.mStatus != InitParams::INITIALIZED) {

    35     InitializeImpl();

    36   } else {

    37     MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);

    38     mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mFBO);

    39     GLenum result = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);

    40     if (result != LOCAL_GL_FRAMEBUFFER_COMPLETE) {

    41       // The main framebuffer (0) of non-offscreen contexts

    42       // might be backed by a EGLSurface that needs to be renewed.

    43       if (mFBO == 0 && !mGL->IsOffscreen()) {

    44         mGL->RenewSurface();

    45         result = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);

    46       }

    47       if (result != LOCAL_GL_FRAMEBUFFER_COMPLETE) {

    48         nsAutoCString msg;

    49         msg.AppendPrintf("Framebuffer not complete -- CheckFramebufferStatus returned 0x%x, "

    50                          "GLContext=%p, IsOffscreen()=%d, mFBO=%d, aFBOTextureTarget=0x%x, "

    51                          "aRect.width=%d, aRect.height=%d",

    52                          result, mGL, mGL->IsOffscreen(), mFBO, mInitParams.mFBOTextureTarget,

    53                          mInitParams.mSize.width, mInitParams.mSize.height);

    54         NS_WARNING(msg.get());

    55       }

    56     }

    58     mCompositor->PrepareViewport(mInitParams.mSize, mTransform);

    59   }

    60 }

    62 #ifdef MOZ_DUMP_PAINTING

    63 TemporaryRef<DataSourceSurface>

    64 CompositingRenderTargetOGL::Dump(Compositor* aCompositor)

    65 {

    66   MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);

    67   CompositorOGL* compositorOGL = static_cast<CompositorOGL*>(aCompositor);

    68   return ReadBackSurface(mGL, mTextureHandle, true, compositorOGL->GetFBOFormat());

    69 }

    70 #endif

    72 void

    73 CompositingRenderTargetOGL::InitializeImpl()

    74 {

    75   MOZ_ASSERT(mInitParams.mStatus == InitParams::READY);

    77   mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mFBO);

    78   mGL->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER,

    79                               LOCAL_GL_COLOR_ATTACHMENT0,

    80                               mInitParams.mFBOTextureTarget,

    81                               mTextureHandle,

    82                               0);

    84   // Making this call to fCheckFramebufferStatus prevents a crash on

    85   // PowerVR. See bug 695246.

    86   GLenum result = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);

    87   if (result != LOCAL_GL_FRAMEBUFFER_COMPLETE) {

    88     nsAutoCString msg;

    89     msg.AppendPrintf("Framebuffer not complete -- error 0x%x, aFBOTextureTarget 0x%x, mFBO %d, mTextureHandle %d, aRect.width %d, aRect.height %d",

    90                       result, mInitParams.mFBOTextureTarget, mFBO, mTextureHandle, mInitParams.mSize.width, mInitParams.mSize.height);

    91     NS_ERROR(msg.get());

    92   }

    94   mCompositor->PrepareViewport(mInitParams.mSize, mTransform);

    95   mGL->fScissor(0, 0, mInitParams.mSize.width, mInitParams.mSize.height);

    96   if (mInitParams.mInit == INIT_MODE_CLEAR) {

    97     mGL->fClearColor(0.0, 0.0, 0.0, 0.0);

    98     mGL->fClear(LOCAL_GL_COLOR_BUFFER_BIT);

    99   }

   101   mInitParams.mStatus = InitParams::INITIALIZED;

   102 }

The Tor Browser / file revision

gfx/layers/opengl/CompositingRenderTargetOGL.cpp@6474c204b198

gfx/layers/opengl/CompositingRenderTargetOGL.cpp