cc/output/delegating_renderer.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/output/delegating_renderer.h"
   6
   7 #include <set>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/debug/trace_event.h"
  12 #include "base/strings/string_split.h"
  13 #include "base/strings/string_util.h"
  14 #include "base/strings/stringprintf.h"
  15 #include "cc/output/compositor_frame_ack.h"
  16 #include "cc/quads/checkerboard_draw_quad.h"
  17 #include "cc/quads/debug_border_draw_quad.h"
  18 #include "cc/quads/render_pass.h"
  19 #include "cc/quads/render_pass_draw_quad.h"
  20 #include "cc/quads/solid_color_draw_quad.h"
  21 #include "cc/quads/texture_draw_quad.h"
  22 #include "cc/quads/tile_draw_quad.h"
  23 #include "cc/quads/yuv_video_draw_quad.h"
  24 #include "cc/resources/resource_provider.h"
  25 #include "gpu/command_buffer/client/context_support.h"
  26 #include "gpu/command_buffer/client/gles2_interface.h"
  27 #include "gpu/command_buffer/common/gpu_memory_allocation.h"
  28 #include "third_party/khronos/GLES2/gl2ext.h"
  29
  30
  31 namespace cc {
  32
  33 scoped_ptr<DelegatingRenderer> DelegatingRenderer::Create(
  34     RendererClient* client,
  35     const LayerTreeSettings* settings,
  36     OutputSurface* output_surface,
  37     ResourceProvider* resource_provider) {
  38   return make_scoped_ptr(new DelegatingRenderer(
  39       client, settings, output_surface, resource_provider));
  40 }
  41
  42 DelegatingRenderer::DelegatingRenderer(RendererClient* client,
  43                                        const LayerTreeSettings* settings,
  44                                        OutputSurface* output_surface,
  45                                        ResourceProvider* resource_provider)
  46     : Renderer(client, settings),
  47       output_surface_(output_surface),
  48       resource_provider_(resource_provider) {
  49   DCHECK(resource_provider_);
  50
  51   capabilities_.using_partial_swap = false;
  52   capabilities_.max_texture_size = resource_provider_->max_texture_size();
  53   capabilities_.best_texture_format = resource_provider_->best_texture_format();
  54   capabilities_.allow_partial_texture_updates = false;
  55
  56   if (!output_surface_->context_provider()) {
  57     capabilities_.using_shared_memory_resources = true;
  58     capabilities_.using_map_image = true;
  59   } else {
  60     const ContextProvider::Capabilities& caps =
  61         output_surface_->context_provider()->ContextCapabilities();
  62
  63     DCHECK(!caps.gpu.iosurface || caps.gpu.texture_rectangle);
  64
  65     capabilities_.using_egl_image = caps.gpu.egl_image_external;
  66     capabilities_.using_map_image = caps.gpu.map_image;
  67
  68     capabilities_.allow_rasterize_on_demand = false;
  69   }
  70 }
  71
  72 DelegatingRenderer::~DelegatingRenderer() {}
  73
  74 const RendererCapabilitiesImpl& DelegatingRenderer::Capabilities() const {
  75   return capabilities_;
  76 }
  77
  78 bool DelegatingRenderer::CanReadPixels() const { return false; }
  79
  80 static ResourceProvider::ResourceId AppendToArray(
  81     ResourceProvider::ResourceIdArray* array,
  82     ResourceProvider::ResourceId id) {
  83   array->push_back(id);
  84   return id;
  85 }
  86
  87 void DelegatingRenderer::DrawFrame(RenderPassList* render_passes_in_draw_order,
  88                                    float device_scale_factor,
  89                                    const gfx::Rect& device_viewport_rect,
  90                                    const gfx::Rect& device_clip_rect,
  91                                    bool disable_picture_quad_image_filtering) {
  92   TRACE_EVENT0("cc", "DelegatingRenderer::DrawFrame");
  93
  94   DCHECK(!delegated_frame_data_);
  95
  96   delegated_frame_data_ = make_scoped_ptr(new DelegatedFrameData);
  97   DelegatedFrameData& out_data = *delegated_frame_data_;
  98   // Move the render passes and resources into the |out_frame|.
  99   out_data.render_pass_list.swap(*render_passes_in_draw_order);
 100
 101   // Collect all resource ids in the render passes into a ResourceIdArray.
 102   ResourceProvider::ResourceIdArray resources;
 103   DrawQuad::ResourceIteratorCallback append_to_array =
 104       base::Bind(&AppendToArray, &resources);
 105   for (size_t i = 0; i < out_data.render_pass_list.size(); ++i) {
 106     RenderPass* render_pass = out_data.render_pass_list.at(i);
 107     for (size_t j = 0; j < render_pass->quad_list.size(); ++j)
 108       render_pass->quad_list[j]->IterateResources(append_to_array);
 109   }
 110   resource_provider_->PrepareSendToParent(resources, &out_data.resource_list);
 111 }
 112
 113 void DelegatingRenderer::SwapBuffers(const CompositorFrameMetadata& metadata) {
 114   TRACE_EVENT0("cc,benchmark", "DelegatingRenderer::SwapBuffers");
 115   CompositorFrame compositor_frame;
 116   compositor_frame.metadata = metadata;
 117   compositor_frame.delegated_frame_data = delegated_frame_data_.Pass();
 118   output_surface_->SwapBuffers(&compositor_frame);
 119 }
 120
 121 void DelegatingRenderer::GetFramebufferPixels(void* pixels,
 122                                               const gfx::Rect& rect) {
 123   NOTREACHED();
 124 }
 125
 126 void DelegatingRenderer::ReceiveSwapBuffersAck(
 127     const CompositorFrameAck& ack) {
 128   resource_provider_->ReceiveReturnsFromParent(ack.resources);
 129 }
 130
 131 bool DelegatingRenderer::IsContextLost() {
 132   ContextProvider* context_provider = output_surface_->context_provider();
 133   if (!context_provider)
 134     return false;
 135   return context_provider->IsContextLost();
 136 }
 137
 138 void DelegatingRenderer::DidChangeVisibility() {
 139   ContextProvider* context_provider = output_surface_->context_provider();
 140   if (!visible()) {
 141     TRACE_EVENT0("cc", "DelegatingRenderer::SetVisible dropping resources");
 142     resource_provider_->ReleaseCachedData();
 143     if (context_provider) {
 144       context_provider->DeleteCachedResources();
 145       context_provider->ContextGL()->Flush();
 146     }
 147   }
 148   // We loop visibility to the GPU process, since that's what manages memory.
 149   // That will allow it to feed us with memory allocations that we can act
 150   // upon.
 151   if (context_provider)
 152     context_provider->ContextSupport()->SetSurfaceVisible(visible());
 153 }
 154
 155 void DelegatingRenderer::SendManagedMemoryStats(size_t bytes_visible,
 156                                                 size_t bytes_visible_and_nearby,
 157                                                 size_t bytes_allocated) {
 158   ContextProvider* context_provider = output_surface_->context_provider();
 159   if (!context_provider) {
 160     // In the software path each child process manages its memory separately,
 161     // so memory stats don't have to be sent anywhere.
 162     return;
 163   }
 164   gpu::ManagedMemoryStats stats;
 165   stats.bytes_required = bytes_visible;
 166   stats.bytes_nice_to_have = bytes_visible_and_nearby;
 167   stats.bytes_allocated = bytes_allocated;
 168   stats.backbuffer_requested = false;
 169
 170   context_provider->ContextSupport()->SendManagedMemoryStats(stats);
 171 }
 172
 173 }  // namespace cc