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RendererOGL.cpp
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RendererOGL.cpp
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "RendererOGL.h"
#include "GLContext.h"
#include "mozilla/gfx/Logging.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/layers/CompositorBridgeParent.h"
#include "mozilla/layers/CompositorThread.h"
#include "mozilla/layers/LayersTypes.h"
#include "mozilla/webrender/RenderCompositor.h"
#include "mozilla/webrender/RenderTextureHost.h"
#include "mozilla/widget/CompositorWidget.h"
namespace mozilla {
namespace wr {
wr::WrExternalImage
LockExternalImage(void* aObj,
wr::WrExternalImageId aId,
uint8_t aChannelIndex,
wr::ImageRendering aRendering)
{
RendererOGL* renderer = reinterpret_cast<RendererOGL*>(aObj);
RenderTextureHost* texture = renderer->GetRenderTexture(aId);
MOZ_ASSERT(texture);
if (!texture) {
gfxCriticalNote << "Failed to lock ExternalImage for extId:" << AsUint64(aId);
return InvalidToWrExternalImage();
}
return texture->Lock(aChannelIndex, renderer->gl(), aRendering);
}
void UnlockExternalImage(void* aObj, wr::WrExternalImageId aId, uint8_t aChannelIndex)
{
RendererOGL* renderer = reinterpret_cast<RendererOGL*>(aObj);
RenderTextureHost* texture = renderer->GetRenderTexture(aId);
MOZ_ASSERT(texture);
if (!texture) {
return;
}
texture->Unlock();
}
RendererOGL::RendererOGL(RefPtr<RenderThread>&& aThread,
UniquePtr<RenderCompositor> aCompositor,
wr::WindowId aWindowId,
wr::Renderer* aRenderer,
layers::CompositorBridgeParent* aBridge)
: mThread(aThread)
, mCompositor(std::move(aCompositor))
, mRenderer(aRenderer)
, mBridge(aBridge)
, mWindowId(aWindowId)
, mDebugFlags({ 0 })
{
MOZ_ASSERT(mThread);
MOZ_ASSERT(mCompositor);
MOZ_ASSERT(mRenderer);
MOZ_ASSERT(mBridge);
MOZ_COUNT_CTOR(RendererOGL);
}
RendererOGL::~RendererOGL()
{
MOZ_COUNT_DTOR(RendererOGL);
if (!mCompositor->MakeCurrent()) {
gfxCriticalNote << "Failed to make render context current during destroying.";
// Leak resources!
return;
}
wr_renderer_delete(mRenderer);
}
wr::WrExternalImageHandler
RendererOGL::GetExternalImageHandler()
{
return wr::WrExternalImageHandler {
this,
LockExternalImage,
UnlockExternalImage,
};
}
void
RendererOGL::Update()
{
uint32_t flags = gfx::gfxVars::WebRenderDebugFlags();
if (mDebugFlags.mBits != flags) {
mDebugFlags.mBits = flags;
wr_renderer_set_debug_flags(mRenderer, mDebugFlags);
}
if (mCompositor->MakeCurrent()) {
wr_renderer_update(mRenderer);
}
}
static void
DoNotifyWebRenderContextPurge(layers::CompositorBridgeParent* aBridge)
{
aBridge->NotifyWebRenderContextPurge();
}
bool
RendererOGL::UpdateAndRender(const Maybe<gfx::IntSize>& aReadbackSize, const Maybe<Range<uint8_t>>& aReadbackBuffer)
{
uint32_t flags = gfx::gfxVars::WebRenderDebugFlags();
// Disable debug flags during readback
if (aReadbackBuffer.isSome()) {
flags = 0;
}
if (mDebugFlags.mBits != flags) {
mDebugFlags.mBits = flags;
wr_renderer_set_debug_flags(mRenderer, mDebugFlags);
}
mozilla::widget::WidgetRenderingContext widgetContext;
#if defined(XP_MACOSX)
widgetContext.mGL = mCompositor->gl();
// TODO: we don't have a notion of compositor here.
//#elif defined(MOZ_WIDGET_ANDROID)
// widgetContext.mCompositor = mCompositor;
#endif
if (!mCompositor->GetWidget()->PreRender(&widgetContext)) {
// XXX This could cause oom in webrender since pending_texture_updates is not handled.
// It needs to be addressed.
return false;
}
// XXX set clear color if MOZ_WIDGET_ANDROID is defined.
if (!mCompositor->BeginFrame()) {
return false;
}
wr_renderer_update(mRenderer);
auto size = mCompositor->GetBufferSize();
if (!wr_renderer_render(mRenderer, size.width, size.height)) {
NotifyWebRenderError(WebRenderError::RENDER);
}
if (aReadbackBuffer.isSome()) {
MOZ_ASSERT(aReadbackSize.isSome());
wr_renderer_readback(mRenderer,
aReadbackSize.ref().width, aReadbackSize.ref().height,
&aReadbackBuffer.ref()[0],
aReadbackBuffer.ref().length());
}
mCompositor->EndFrame();
mCompositor->GetWidget()->PostRender(&widgetContext);
#if defined(ENABLE_FRAME_LATENCY_LOG)
if (mFrameStartTime) {
uint32_t latencyMs = round((TimeStamp::Now() - mFrameStartTime).ToMilliseconds());
printf_stderr("generate frame latencyMs latencyMs %d\n", latencyMs);
}
// Clear frame start time
mFrameStartTime = TimeStamp();
#endif
gl::GLContext* gl = mCompositor->gl();
if (gl->IsSupported(gl::GLFeature::robustness)) {
GLenum resetStatus = gl->fGetGraphicsResetStatus();
if (resetStatus == LOCAL_GL_PURGED_CONTEXT_RESET_NV) {
layers::CompositorThreadHolder::Loop()->PostTask(NewRunnableFunction(
"DoNotifyWebRenderContextPurgeRunnable",
&DoNotifyWebRenderContextPurge,
mBridge
));
}
}
// TODO: Flush pending actions such as texture deletions/unlocks and
// textureHosts recycling.
return true;
}
void
RendererOGL::Pause()
{
mCompositor->Pause();
}
bool
RendererOGL::Resume()
{
return mCompositor->Resume();
}
layers::SyncObjectHost*
RendererOGL::GetSyncObject() const
{
return mCompositor->GetSyncObject();
}
gl::GLContext*
RendererOGL::gl() const
{
return mCompositor->gl();
}
void
RendererOGL::SetFrameStartTime(const TimeStamp& aTime)
{
if (mFrameStartTime) {
// frame start time is already set. This could happen when multiple
// generate frame requests are merged by webrender.
return;
}
mFrameStartTime = aTime;
}
wr::WrPipelineInfo
RendererOGL::FlushPipelineInfo()
{
return wr_renderer_flush_pipeline_info(mRenderer);
}
RenderTextureHost*
RendererOGL::GetRenderTexture(wr::WrExternalImageId aExternalImageId)
{
return mThread->GetRenderTexture(aExternalImageId);
}
static void
DoNotifyWebRenderError(layers::CompositorBridgeParent* aBridge, WebRenderError aError)
{
aBridge->NotifyWebRenderError(aError);
}
void
RendererOGL::NotifyWebRenderError(WebRenderError aError)
{
layers::CompositorThreadHolder::Loop()->PostTask(NewRunnableFunction(
"DoNotifyWebRenderErrorRunnable",
&DoNotifyWebRenderError,
mBridge,
aError
));
}
} // namespace wr
} // namespace mozilla