Part 4 of cc/ directory shuffles: output

Continuation of https://src.chromium.org/viewvc/chrome?view=rev&revision=188681

BUG=190824
TBR=piman@chromium.org, jschuh@chromium.org

Review URL: https://codereview.chromium.org/12912006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@188689 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 199 insertions, 0 deletions

diff --git a/cc/output/delegating_renderer.cc b/cc/output/delegating_renderer.cc
new file mode 100644
index 0000000..26a3f19
--- /dev/null
+++ b/cc/output/delegating_renderer.cc
@@ -0,0 +1,199 @@
+// 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/string_util.h"
+#include "base/strings/string_split.h"
+#include "cc/checkerboard_draw_quad.h"
+#include "cc/debug_border_draw_quad.h"
+#include "cc/output/compositor_frame.h"
+#include "cc/output/compositor_frame_ack.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_.using_partial_swap = 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_.using_swap_complete_callback = true;
+  capabilities_.max_texture_size = resource_provider_->max_texture_size();
+  capabilities_.best_texture_format = resource_provider_->best_texture_format();
+  capabilities_.allow_partial_texture_updates = 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_.using_accelerated_painting =
+      Settings().acceleratePainting &&
+      capabilities_.best_texture_format == GL_BGRA_EXT &&
+      hasReadBGRA;
+
+  // TODO(piman): loop visibility to GPU process?
+  capabilities_.using_set_visibility = hasSetVisibility;
+
+  // TODO(danakj): Support GpuMemoryManager.
+  capabilities_.using_gpu_memory_manager = false;
+
+  capabilities_.using_egl_image = hasEGLImage;
+
+  return true;
+}
+
+DelegatingRenderer::~DelegatingRenderer() {
+  WebGraphicsContext3D* context3d = resource_provider_->GraphicsContext3D();
+  if (context3d)
+    context3d->setContextLostCallback(NULL);
+}
+
+const RendererCapabilities& DelegatingRenderer::Capabilities() const {
+  return capabilities_;
+}
+
+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");
+
+  CompositorFrame out_frame;
+  out_frame.metadata = client_->MakeCompositorFrameMetadata();
+
+  out_frame.delegated_frame_data = make_scoped_ptr(new DelegatedFrameData);
+
+  // 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 < render_passes_in_draw_order.size(); ++i) {
+    RenderPass* render_pass = render_passes_in_draw_order[i];
+    for (size_t j = 0; j < render_pass->quad_list.size(); ++j)
+      render_pass->quad_list[j]->IterateResources(append_to_array);
+  }
+
+  // Move the render passes and resources into the |out_frame|.
+  DelegatedFrameData& out_data = *out_frame.delegated_frame_data;
+  out_data.render_pass_list.swap(render_passes_in_draw_order);
+  resource_provider_->PrepareSendToParent(resources, &out_data.resource_list);
+
+  output_surface_->SendFrameToParentCompositor(&out_frame);
+}
+
+bool DelegatingRenderer::SwapBuffers() {
+  return true;
+}
+
+void DelegatingRenderer::GetFramebufferPixels(void* pixels, gfx::Rect rect) {
+  NOTIMPLEMENTED();
+}
+
+void DelegatingRenderer::ReceiveCompositorFrameAck(
+    const CompositorFrameAck& ack) {
+  resource_provider_->ReceiveFromParent(ack.resources);
+  if (client_->HasImplThread())
+    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() {
+  client_->DidLoseOutputSurface();
+}
+
+}  // namespace cc