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   scoped_ptr<DelegatingRenderer> renderer(new DelegatingRenderer(
  39       client, settings, output_surface, resource_provider));
  40   if (!renderer->Initialize())
  41     return scoped_ptr<DelegatingRenderer>();
  42   return renderer.Pass();
  43 }
  44
  45 DelegatingRenderer::DelegatingRenderer(RendererClient* client,
  46                                        const LayerTreeSettings* settings,
  47                                        OutputSurface* output_surface,
  48                                        ResourceProvider* resource_provider)
  49     : Renderer(client, settings),
  50       output_surface_(output_surface),
  51       resource_provider_(resource_provider),
  52       visible_(true) {
  53   DCHECK(resource_provider_);
  54 }
  55
  56 bool DelegatingRenderer::Initialize() {
  57   capabilities_.using_partial_swap = false;
  58   capabilities_.max_texture_size = resource_provider_->max_texture_size();
  59   capabilities_.best_texture_format = resource_provider_->best_texture_format();
  60   capabilities_.allow_partial_texture_updates = false;
  61   capabilities_.using_offscreen_context3d = false;
  62
  63   if (!output_surface_->context_provider()) {
  64     capabilities_.using_shared_memory_resources = true;
  65     capabilities_.using_map_image = settings_->use_map_image;
  66     return true;
  67   }
  68
  69   const ContextProvider::Capabilities& caps =
  70       output_surface_->context_provider()->ContextCapabilities();
  71
  72   DCHECK(!caps.gpu.iosurface || caps.gpu.texture_rectangle);
  73
  74   capabilities_.using_egl_image = caps.gpu.egl_image_external;
  75   capabilities_.using_map_image =
  76       settings_->use_map_image && caps.gpu.map_image;
  77
  78   return true;
  79 }
  80
  81 DelegatingRenderer::~DelegatingRenderer() {}
  82
  83 const RendererCapabilitiesImpl& DelegatingRenderer::Capabilities() const {
  84   return capabilities_;
  85 }
  86
  87 bool DelegatingRenderer::CanReadPixels() const { return false; }
  88
  89 static ResourceProvider::ResourceId AppendToArray(
  90     ResourceProvider::ResourceIdArray* array,
  91     ResourceProvider::ResourceId id) {
  92   array->push_back(id);
  93   return id;
  94 }
  95
  96 void DelegatingRenderer::DrawFrame(RenderPassList* render_passes_in_draw_order,
  97                                    ContextProvider* offscreen_context_provider,
  98                                    float device_scale_factor,
  99                                    const gfx::Rect& device_viewport_rect,
 100                                    const gfx::Rect& device_clip_rect,
 101                                    bool allow_partial_swap,
 102                                    bool disable_picture_quad_image_filtering) {
 103   TRACE_EVENT0("cc", "DelegatingRenderer::DrawFrame");
 104
 105   DCHECK(!delegated_frame_data_);
 106
 107   delegated_frame_data_ = make_scoped_ptr(new DelegatedFrameData);
 108   DelegatedFrameData& out_data = *delegated_frame_data_;
 109   // Move the render passes and resources into the |out_frame|.
 110   out_data.render_pass_list.swap(*render_passes_in_draw_order);
 111
 112   // Collect all resource ids in the render passes into a ResourceIdArray.
 113   ResourceProvider::ResourceIdArray resources;
 114   DrawQuad::ResourceIteratorCallback append_to_array =
 115       base::Bind(&AppendToArray, &resources);
 116   for (size_t i = 0; i < out_data.render_pass_list.size(); ++i) {
 117     RenderPass* render_pass = out_data.render_pass_list.at(i);
 118     for (size_t j = 0; j < render_pass->quad_list.size(); ++j)
 119       render_pass->quad_list[j]->IterateResources(append_to_array);
 120   }
 121   resource_provider_->PrepareSendToParent(resources, &out_data.resource_list);
 122 }
 123
 124 void DelegatingRenderer::SwapBuffers(const CompositorFrameMetadata& metadata) {
 125   TRACE_EVENT0("cc", "DelegatingRenderer::SwapBuffers");
 126   CompositorFrame compositor_frame;
 127   compositor_frame.metadata = metadata;
 128   compositor_frame.delegated_frame_data = delegated_frame_data_.Pass();
 129   output_surface_->SwapBuffers(&compositor_frame);
 130 }
 131
 132 void DelegatingRenderer::GetFramebufferPixels(void* pixels,
 133                                               const gfx::Rect& rect) {
 134   NOTREACHED();
 135 }
 136
 137 void DelegatingRenderer::ReceiveSwapBuffersAck(
 138     const CompositorFrameAck& ack) {
 139   resource_provider_->ReceiveReturnsFromParent(ack.resources);
 140 }
 141
 142 bool DelegatingRenderer::IsContextLost() {
 143   ContextProvider* context_provider = output_surface_->context_provider();
 144   if (!context_provider)
 145     return false;
 146   return context_provider->IsContextLost();
 147 }
 148
 149 void DelegatingRenderer::SetVisible(bool visible) {
 150   if (visible == visible_)
 151     return;
 152
 153   visible_ = visible;
 154   ContextProvider* context_provider = output_surface_->context_provider();
 155   if (!visible_) {
 156     TRACE_EVENT0("cc", "DelegatingRenderer::SetVisible dropping resources");
 157     resource_provider_->ReleaseCachedData();
 158     if (context_provider)
 159       context_provider->ContextGL()->Flush();
 160   }
 161   // We loop visibility to the GPU process, since that's what manages memory.
 162   // That will allow it to feed us with memory allocations that we can act
 163   // upon.
 164   DCHECK(context_provider);
 165   context_provider->ContextSupport()->SetSurfaceVisible(visible);
 166 }
 167
 168 void DelegatingRenderer::SendManagedMemoryStats(size_t bytes_visible,
 169                                                 size_t bytes_visible_and_nearby,
 170                                                 size_t bytes_allocated) {
 171   ContextProvider* context_provider = output_surface_->context_provider();
 172   if (!context_provider) {
 173     // TODO(piman): software path.
 174     NOTIMPLEMENTED();
 175     return;
 176   }
 177   gpu::ManagedMemoryStats stats;
 178   stats.bytes_required = bytes_visible;
 179   stats.bytes_nice_to_have = bytes_visible_and_nearby;
 180   stats.bytes_allocated = bytes_allocated;
 181   stats.backbuffer_requested = false;
 182
 183   context_provider->ContextSupport()->SendManagedMemoryStats(stats);
 184 }
 185
 186 }  // namespace cc