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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/delegating_renderer.h"
#include <set>
#include <string>
#include <vector>
#include "base/debug/trace_event.h"
#include "base/string_split.h"
#include "base/string_util.h"
#include "cc/checkerboard_draw_quad.h"
#include "cc/compositor_frame.h"
#include "cc/compositor_frame_ack.h"
#include "cc/debug_border_draw_quad.h"
#include "cc/render_pass.h"
#include "cc/render_pass_draw_quad.h"
#include "cc/resource_provider.h"
#include "cc/solid_color_draw_quad.h"
#include "cc/texture_draw_quad.h"
#include "cc/tile_draw_quad.h"
#include "cc/yuv_video_draw_quad.h"
#include "third_party/khronos/GLES2/gl2ext.h"
using WebKit::WebGraphicsContext3D;
namespace cc {
scoped_ptr<DelegatingRenderer> DelegatingRenderer::Create(
RendererClient* client,
OutputSurface* output_surface,
ResourceProvider* resource_provider) {
scoped_ptr<DelegatingRenderer> renderer(
new DelegatingRenderer(client, output_surface, resource_provider));
if (!renderer->Initialize())
return scoped_ptr<DelegatingRenderer>();
return renderer.Pass();
}
DelegatingRenderer::DelegatingRenderer(
RendererClient* client,
OutputSurface* output_surface,
ResourceProvider* resource_provider)
: Renderer(client),
output_surface_(output_surface),
resource_provider_(resource_provider),
visible_(true) {
DCHECK(resource_provider_);
}
bool DelegatingRenderer::Initialize() {
capabilities_.usingPartialSwap = false;
// TODO(danakj): Throttling - we may want to only allow 1 outstanding frame,
// but the parent compositor may pipeline for us.
// TODO(danakj): Can we use this in single-thread mode?
capabilities_.usingSwapCompleteCallback = true;
capabilities_.maxTextureSize = resource_provider_->maxTextureSize();
capabilities_.bestTextureFormat = resource_provider_->bestTextureFormat();
capabilities_.allowPartialTextureUpdates = false;
WebGraphicsContext3D* context3d = resource_provider_->graphicsContext3D();
if (!context3d) {
// Software compositing.
return true;
}
if (!context3d->makeContextCurrent())
return false;
context3d->setContextLostCallback(this);
context3d->pushGroupMarkerEXT("CompositorContext");
std::string extensionsString =
UTF16ToASCII(context3d->getString(GL_EXTENSIONS));
std::vector<std::string> extensions;
base::SplitString(extensionsString, ' ', &extensions);
// TODO(danakj): We need non-GPU-specific paths for these things. This
// renderer shouldn't need to use context3d extensions directly.
bool hasReadBGRA = true;
bool hasSetVisibility = true;
bool hasIOSurface = true;
bool hasARBTextureRect = true;
bool hasGpuMemoryManager = true;
bool hasEGLImage = true;
for (size_t i = 0; i < extensions.size(); ++i) {
if (extensions[i] == "GL_EXT_read_format_bgra")
hasReadBGRA = true;
else if (extensions[i] == "GL_CHROMIUM_set_visibility")
hasSetVisibility = true;
else if (extensions[i] == "GL_CHROMIUM_iosurface")
hasIOSurface = true;
else if (extensions[i] == "GL_ARB_texture_rectangle")
hasARBTextureRect = true;
else if (extensions[i] == "GL_CHROMIUM_gpu_memory_manager")
hasGpuMemoryManager = true;
else if (extensions[i] == "GL_OES_EGL_image_external")
hasEGLImage = true;
}
if (hasIOSurface)
DCHECK(hasARBTextureRect);
capabilities_.usingAcceleratedPainting =
settings().acceleratePainting &&
capabilities_.bestTextureFormat == GL_BGRA_EXT &&
hasReadBGRA;
// TODO(piman): loop visibility to GPU process?
capabilities_.usingSetVisibility = hasSetVisibility;
// TODO(danakj): Support GpuMemoryManager.
capabilities_.usingGpuMemoryManager = false;
capabilities_.usingEglImage = hasEGLImage;
return true;
}
DelegatingRenderer::~DelegatingRenderer() {
WebGraphicsContext3D* context3d = resource_provider_->graphicsContext3D();
if (context3d)
context3d->setContextLostCallback(NULL);
}
const RendererCapabilities& DelegatingRenderer::capabilities() const {
return capabilities_;
}
void DelegatingRenderer::drawFrame(
RenderPassList& render_passes_in_draw_order) {
TRACE_EVENT0("cc", "DelegatingRenderer::drawFrame");
CompositorFrame out_frame;
out_frame.metadata = m_client->makeCompositorFrameMetadata();
out_frame.delegated_frame_data = make_scoped_ptr(new DelegatedFrameData);
DelegatedFrameData& out_data = *out_frame.delegated_frame_data;
out_data.size = viewportSize();
out_data.render_pass_list.swap(render_passes_in_draw_order);
ResourceProvider::ResourceIdArray resources;
for (size_t i = 0; i < out_data.render_pass_list.size(); ++i) {
for (size_t j = 0; j < out_data.render_pass_list[i]->quad_list.size(); ++j)
out_data.render_pass_list[i]->quad_list[j]->AppendResources(&resources);
}
resource_provider_->prepareSendToParent(resources, &out_data.resource_list);
output_surface_->SendFrameToParentCompositor(&out_frame);
}
bool DelegatingRenderer::swapBuffers() {
return true;
}
void DelegatingRenderer::getFramebufferPixels(void *pixels,
const gfx::Rect& rect) {
NOTIMPLEMENTED();
}
void DelegatingRenderer::receiveCompositorFrameAck(
const CompositorFrameAck& ack) {
resource_provider_->receiveFromParent(ack.resources);
m_client->onSwapBuffersComplete();
}
bool DelegatingRenderer::isContextLost() {
WebGraphicsContext3D* context3d = resource_provider_->graphicsContext3D();
if (!context3d)
return false;
return context3d->getGraphicsResetStatusARB() != GL_NO_ERROR;
}
void DelegatingRenderer::setVisible(bool visible) {
visible_ = visible;
}
void DelegatingRenderer::onContextLost() {
m_client->didLoseOutputSurface();
}
} // namespace cc
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