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comparison: gfx/layers/opengl/CompositingRenderTargetOGL.cpp
gfx/layers/opengl/CompositingRenderTargetOGL.cpp
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| 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/. */ | |
| 5 | |
| 6 #include "CompositingRenderTargetOGL.h" | |
| 7 #include "GLContext.h" | |
| 8 #include "GLReadTexImageHelper.h" | |
| 9 #include "mozilla/gfx/2D.h" | |
| 10 | |
| 11 using namespace mozilla; | |
| 12 using namespace mozilla::gfx; | |
| 13 using namespace mozilla::gl; | |
| 14 using namespace mozilla::layers; | |
| 15 | |
| 16 CompositingRenderTargetOGL::~CompositingRenderTargetOGL() | |
| 17 { | |
| 18 mGL->fDeleteTextures(1, &mTextureHandle); | |
| 19 mGL->fDeleteFramebuffers(1, &mFBO); | |
| 20 } | |
| 21 | |
| 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 } | |
| 30 | |
| 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 } | |
| 57 | |
| 58 mCompositor->PrepareViewport(mInitParams.mSize, mTransform); | |
| 59 } | |
| 60 } | |
| 61 | |
| 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 | |
| 71 | |
| 72 void | |
| 73 CompositingRenderTargetOGL::InitializeImpl() | |
| 74 { | |
| 75 MOZ_ASSERT(mInitParams.mStatus == InitParams::READY); | |
| 76 | |
| 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); | |
| 83 | |
| 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 } | |
| 93 | |
| 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 } | |
| 100 | |
| 101 mInitParams.mStatus = InitParams::INITIALIZED; | |
| 102 } |
