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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "CompositingRenderTargetOGL.h"
#include "GLContext.h"
#include "GLReadTexImageHelper.h"
#include "ScopedGLHelpers.h"
#include "mozilla/gfx/2D.h"
namespace mozilla {
namespace layers {
using namespace mozilla::gfx;
using namespace mozilla::gl;
CompositingRenderTargetOGL::~CompositingRenderTargetOGL()
{
if (mGL && mGL->MakeCurrent()) {
mGL->fDeleteTextures(1, &mTextureHandle);
mGL->fDeleteFramebuffers(1, &mFBO);
}
}
void
CompositingRenderTargetOGL::BindTexture(GLenum aTextureUnit, GLenum aTextureTarget)
{
MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
MOZ_ASSERT(mTextureHandle != 0);
mGL->fActiveTexture(aTextureUnit);
mGL->fBindTexture(aTextureTarget, mTextureHandle);
}
void
CompositingRenderTargetOGL::BindRenderTarget()
{
bool needsClear = false;
if (mInitParams.mStatus != InitParams::INITIALIZED) {
InitializeImpl();
if (mInitParams.mInit == INIT_MODE_CLEAR) {
needsClear = true;
mClearOnBind = false;
}
} else {
MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
GLuint fbo = mFBO == 0 ? mGL->GetDefaultFramebuffer() : mFBO;
mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, fbo);
GLenum result = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (result != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
// The main framebuffer (0) of non-offscreen contexts
// might be backed by a EGLSurface that needs to be renewed.
if (mFBO == 0 && !mGL->IsOffscreen()) {
mGL->RenewSurface(mCompositor->GetWidget()->RealWidget());
result = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
}
if (result != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
nsAutoCString msg;
msg.AppendPrintf("Framebuffer not complete -- CheckFramebufferStatus returned 0x%x, "
"GLContext=%p, IsOffscreen()=%d, mFBO=%d, aFBOTextureTarget=0x%x, "
"aRect.width=%d, aRect.height=%d",
result, mGL, mGL->IsOffscreen(), mFBO, mInitParams.mFBOTextureTarget,
mInitParams.mSize.width, mInitParams.mSize.height);
NS_WARNING(msg.get());
}
}
needsClear = mClearOnBind;
}
if (needsClear) {
ScopedGLState scopedScissorTestState(mGL, LOCAL_GL_SCISSOR_TEST, true);
ScopedScissorRect autoScissorRect(mGL, 0, 0, mInitParams.mSize.width,
mInitParams.mSize.height);
mGL->fClearColor(0.0, 0.0, 0.0, 0.0);
mGL->fClearDepth(0.0);
mGL->fClear(LOCAL_GL_COLOR_BUFFER_BIT | LOCAL_GL_DEPTH_BUFFER_BIT);
}
}
#ifdef MOZ_DUMP_PAINTING
already_AddRefed<DataSourceSurface>
CompositingRenderTargetOGL::Dump(Compositor* aCompositor)
{
MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
CompositorOGL* compositorOGL = aCompositor->AsCompositorOGL();
return ReadBackSurface(mGL, mTextureHandle, true, compositorOGL->GetFBOFormat());
}
#endif
void
CompositingRenderTargetOGL::InitializeImpl()
{
MOZ_ASSERT(mInitParams.mStatus == InitParams::READY);
//TODO: call mGL->GetBackbufferFB(), use that
GLuint fbo = mFBO == 0 ? mGL->GetDefaultFramebuffer() : mFBO;
mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, fbo);
mGL->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER,
LOCAL_GL_COLOR_ATTACHMENT0,
mInitParams.mFBOTextureTarget,
mTextureHandle,
0);
// Making this call to fCheckFramebufferStatus prevents a crash on
// PowerVR. See bug 695246.
GLenum result = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (result != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
nsAutoCString msg;
msg.AppendPrintf("Framebuffer not complete -- error 0x%x, aFBOTextureTarget 0x%x, mFBO %d, mTextureHandle %d, aRect.width %d, aRect.height %d",
result, mInitParams.mFBOTextureTarget, mFBO, mTextureHandle, mInitParams.mSize.width, mInitParams.mSize.height);
NS_ERROR(msg.get());
}
mInitParams.mStatus = InitParams::INITIALIZED;
}
} // namespace layers
} // namespace mozilla
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