forked from mirrors/gecko-dev
121 lines
4.3 KiB
C++
121 lines
4.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CompositingRenderTargetOGL.h"
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#include "GLContext.h"
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#include "GLReadTexImageHelper.h"
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#include "ScopedGLHelpers.h"
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#include "mozilla/gfx/2D.h"
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namespace mozilla {
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namespace layers {
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using namespace mozilla::gfx;
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using namespace mozilla::gl;
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CompositingRenderTargetOGL::~CompositingRenderTargetOGL()
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{
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if (mGL && mGL->MakeCurrent()) {
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mGL->fDeleteTextures(1, &mTextureHandle);
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mGL->fDeleteFramebuffers(1, &mFBO);
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}
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}
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void
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CompositingRenderTargetOGL::BindTexture(GLenum aTextureUnit, GLenum aTextureTarget)
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{
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MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
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MOZ_ASSERT(mTextureHandle != 0);
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mGL->fActiveTexture(aTextureUnit);
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mGL->fBindTexture(aTextureTarget, mTextureHandle);
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}
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void
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CompositingRenderTargetOGL::BindRenderTarget()
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{
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bool needsClear = false;
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if (mInitParams.mStatus != InitParams::INITIALIZED) {
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InitializeImpl();
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if (mInitParams.mInit == INIT_MODE_CLEAR) {
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needsClear = true;
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mClearOnBind = false;
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}
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} else {
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MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
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GLuint fbo = mFBO == 0 ? mGL->GetDefaultFramebuffer() : mFBO;
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mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, fbo);
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GLenum result = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
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if (result != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
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// The main framebuffer (0) of non-offscreen contexts
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// might be backed by a EGLSurface that needs to be renewed.
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if (mFBO == 0 && !mGL->IsOffscreen()) {
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mGL->RenewSurface(mCompositor->GetWidget());
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result = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
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}
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if (result != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
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nsAutoCString msg;
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msg.AppendPrintf("Framebuffer not complete -- CheckFramebufferStatus returned 0x%x, "
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"GLContext=%p, IsOffscreen()=%d, mFBO=%d, aFBOTextureTarget=0x%x, "
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"aRect.width=%d, aRect.height=%d",
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result, mGL.get(), mGL->IsOffscreen(), mFBO, mInitParams.mFBOTextureTarget,
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mInitParams.mSize.width, mInitParams.mSize.height);
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NS_WARNING(msg.get());
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}
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}
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needsClear = mClearOnBind;
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}
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if (needsClear) {
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ScopedGLState scopedScissorTestState(mGL, LOCAL_GL_SCISSOR_TEST, true);
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ScopedScissorRect autoScissorRect(mGL, 0, 0, mInitParams.mSize.width,
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mInitParams.mSize.height);
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mGL->fClearColor(0.0, 0.0, 0.0, 0.0);
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mGL->fClearDepth(0.0);
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mGL->fClear(LOCAL_GL_COLOR_BUFFER_BIT | LOCAL_GL_DEPTH_BUFFER_BIT);
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}
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}
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#ifdef MOZ_DUMP_PAINTING
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already_AddRefed<DataSourceSurface>
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CompositingRenderTargetOGL::Dump(Compositor* aCompositor)
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{
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MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
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CompositorOGL* compositorOGL = aCompositor->AsCompositorOGL();
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return ReadBackSurface(mGL, mTextureHandle, true, compositorOGL->GetFBOFormat());
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}
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#endif
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void
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CompositingRenderTargetOGL::InitializeImpl()
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{
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MOZ_ASSERT(mInitParams.mStatus == InitParams::READY);
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//TODO: call mGL->GetBackbufferFB(), use that
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GLuint fbo = mFBO == 0 ? mGL->GetDefaultFramebuffer() : mFBO;
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mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, fbo);
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mGL->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER,
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LOCAL_GL_COLOR_ATTACHMENT0,
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mInitParams.mFBOTextureTarget,
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mTextureHandle,
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0);
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// Making this call to fCheckFramebufferStatus prevents a crash on
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// PowerVR. See bug 695246.
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GLenum result = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
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if (result != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
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nsAutoCString msg;
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msg.AppendPrintf("Framebuffer not complete -- error 0x%x, aFBOTextureTarget 0x%x, mFBO %d, mTextureHandle %d, aRect.width %d, aRect.height %d",
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result, mInitParams.mFBOTextureTarget, mFBO, mTextureHandle, mInitParams.mSize.width, mInitParams.mSize.height);
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NS_ERROR(msg.get());
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}
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mInitParams.mStatus = InitParams::INITIALIZED;
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}
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} // namespace layers
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} // namespace mozilla
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