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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/output/delegating_renderer.h"
#include <set>
#include <string>
#include <vector>
#include "base/debug/trace_event.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "cc/output/compositor_frame_ack.h"
#include "cc/quads/checkerboard_draw_quad.h"
#include "cc/quads/debug_border_draw_quad.h"
#include "cc/quads/render_pass.h"
#include "cc/quads/render_pass_draw_quad.h"
#include "cc/quads/solid_color_draw_quad.h"
#include "cc/quads/texture_draw_quad.h"
#include "cc/quads/tile_draw_quad.h"
#include "cc/quads/yuv_video_draw_quad.h"
#include "cc/resources/resource_provider.h"
#include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
#include "third_party/khronos/GLES2/gl2.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_.using_partial_swap = false;
capabilities_.max_texture_size = resource_provider_->max_texture_size();
capabilities_.best_texture_format = resource_provider_->best_texture_format();
capabilities_.allow_partial_texture_updates = false;
capabilities_.using_offscreen_context3d = false;
WebGraphicsContext3D* context3d = resource_provider_->GraphicsContext3D();
if (!context3d) {
// Software compositing.
return true;
}
if (!context3d->makeContextCurrent())
return false;
std::string unique_context_name = base::StringPrintf(
"%s-%p",
Settings().compositor_name.c_str(),
context3d);
context3d->pushGroupMarkerEXT(unique_context_name.c_str());
std::string extensions_string =
UTF16ToASCII(context3d->getString(GL_EXTENSIONS));
std::vector<std::string> extensions;
base::SplitString(extensions_string, ' ', &extensions);
// TODO(danakj): We need non-GPU-specific paths for these things. This
// renderer shouldn't need to use context3d extensions directly.
bool has_set_visibility = false;
bool has_io_surface = false;
bool has_arb_texture_rect = false;
bool has_egl_image = false;
bool has_map_image = false;
for (size_t i = 0; i < extensions.size(); ++i) {
if (extensions[i] == "GL_CHROMIUM_set_visibility") {
has_set_visibility = true;
} else if (extensions[i] == "GL_CHROMIUM_iosurface") {
has_io_surface = true;
} else if (extensions[i] == "GL_ARB_texture_rectangle") {
has_arb_texture_rect = true;
} else if (extensions[i] == "GL_OES_EGL_image_external") {
has_egl_image = true;
} else if (extensions[i] == "GL_CHROMIUM_map_image") {
has_map_image = true;
}
}
if (has_io_surface)
DCHECK(has_arb_texture_rect);
capabilities_.using_set_visibility = has_set_visibility;
capabilities_.using_egl_image = has_egl_image;
capabilities_.using_map_image = has_map_image;
return true;
}
DelegatingRenderer::~DelegatingRenderer() {}
const RendererCapabilities& DelegatingRenderer::Capabilities() const {
return capabilities_;
}
bool DelegatingRenderer::CanReadPixels() const { return false; }
static ResourceProvider::ResourceId AppendToArray(
ResourceProvider::ResourceIdArray* array,
ResourceProvider::ResourceId id) {
array->push_back(id);
return id;
}
void DelegatingRenderer::DrawFrame(
RenderPassList* render_passes_in_draw_order) {
TRACE_EVENT0("cc", "DelegatingRenderer::DrawFrame");
DCHECK(!frame_for_swap_buffers_.delegated_frame_data);
frame_for_swap_buffers_.metadata = client_->MakeCompositorFrameMetadata();
frame_for_swap_buffers_.delegated_frame_data =
make_scoped_ptr(new DelegatedFrameData);
DelegatedFrameData& out_data = *frame_for_swap_buffers_.delegated_frame_data;
// Move the render passes and resources into the |out_frame|.
out_data.render_pass_list.swap(*render_passes_in_draw_order);
// Collect all resource ids in the render passes into a ResourceIdArray.
ResourceProvider::ResourceIdArray resources;
DrawQuad::ResourceIteratorCallback append_to_array =
base::Bind(&AppendToArray, &resources);
for (size_t i = 0; i < out_data.render_pass_list.size(); ++i) {
RenderPass* render_pass = out_data.render_pass_list.at(i);
for (size_t j = 0; j < render_pass->quad_list.size(); ++j)
render_pass->quad_list[j]->IterateResources(append_to_array);
}
resource_provider_->PrepareSendToParent(resources, &out_data.resource_list);
}
void DelegatingRenderer::SwapBuffers() {
TRACE_EVENT0("cc", "DelegatingRenderer::SwapBuffers");
output_surface_->SwapBuffers(&frame_for_swap_buffers_);
frame_for_swap_buffers_.delegated_frame_data.reset();
}
void DelegatingRenderer::GetFramebufferPixels(void* pixels, gfx::Rect rect) {
NOTREACHED();
}
void DelegatingRenderer::ReceiveSwapBuffersAck(
const CompositorFrameAck& ack) {
resource_provider_->ReceiveFromParent(ack.resources);
}
bool DelegatingRenderer::IsContextLost() {
WebGraphicsContext3D* context3d = resource_provider_->GraphicsContext3D();
if (!context3d)
return false;
return context3d->getGraphicsResetStatusARB() != GL_NO_ERROR;
}
void DelegatingRenderer::SetVisible(bool visible) {
if (visible == visible_)
return;
visible_ = visible;
WebGraphicsContext3D* context = resource_provider_->GraphicsContext3D();
if (!visible_) {
TRACE_EVENT0("cc", "DelegatingRenderer::SetVisible dropping resources");
resource_provider_->ReleaseCachedData();
if (context)
context->flush();
}
if (capabilities_.using_set_visibility) {
// We loop visibility to the GPU process, since that's what manages memory.
// That will allow it to feed us with memory allocations that we can act
// upon.
DCHECK(context);
context->setVisibilityCHROMIUM(visible);
}
}
void DelegatingRenderer::SendManagedMemoryStats(size_t bytes_visible,
size_t bytes_visible_and_nearby,
size_t bytes_allocated) {
WebGraphicsContext3D* context = resource_provider_->GraphicsContext3D();
if (!context) {
// TODO(piman): software path.
NOTIMPLEMENTED();
return;
}
WebKit::WebGraphicsManagedMemoryStats stats;
stats.bytesVisible = bytes_visible;
stats.bytesVisibleAndNearby = bytes_visible_and_nearby;
stats.bytesAllocated = bytes_allocated;
stats.backbufferRequested = false;
context->sendManagedMemoryStatsCHROMIUM(&stats);
}
void DelegatingRenderer::SetDiscardBackBufferWhenNotVisible(bool discard) {
// Nothing to do, we don't have a back buffer.
}
} // namespace cc
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