cc/quads/render_pass.cc

   1 // Copyright 2011 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/quads/render_pass.h"
   6
   7 #include "base/values.h"
   8 #include "cc/base/math_util.h"
   9 #include "cc/debug/traced_value.h"
  10 #include "cc/output/copy_output_request.h"
  11 #include "cc/quads/checkerboard_draw_quad.h"
  12 #include "cc/quads/debug_border_draw_quad.h"
  13 #include "cc/quads/draw_quad.h"
  14 #include "cc/quads/io_surface_draw_quad.h"
  15 #include "cc/quads/picture_draw_quad.h"
  16 #include "cc/quads/render_pass_draw_quad.h"
  17 #include "cc/quads/shared_quad_state.h"
  18 #include "cc/quads/solid_color_draw_quad.h"
  19 #include "cc/quads/stream_video_draw_quad.h"
  20 #include "cc/quads/surface_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
  25 namespace {
  26 const size_t kDefaultNumSharedQuadStatesToReserve = 32;
  27 const size_t kDefaultNumQuadsToReserve = 128;
  28 }
  29
  30 namespace cc {
  31
  32 void* RenderPass::Id::AsTracingId() const {
  33   COMPILE_ASSERT(sizeof(size_t) <= sizeof(void*),  // NOLINT
  34                  size_t_bigger_than_pointer);
  35   return reinterpret_cast<void*>(base::HashPair(layer_id, index));
  36 }
  37
  38 scoped_ptr<RenderPass> RenderPass::Create() {
  39   return make_scoped_ptr(new RenderPass());
  40 }
  41
  42 scoped_ptr<RenderPass> RenderPass::Create(size_t num_layers) {
  43   return make_scoped_ptr(new RenderPass(num_layers));
  44 }
  45
  46 RenderPass::RenderPass() : id(Id(-1, -1)), has_transparent_background(true) {
  47   shared_quad_state_list.reserve(kDefaultNumSharedQuadStatesToReserve);
  48   quad_list.reserve(kDefaultNumQuadsToReserve);
  49 }
  50
  51 RenderPass::RenderPass(size_t num_layers)
  52     : id(Id(-1, -1)), has_transparent_background(true) {
  53   // Each layer usually produces one shared quad state, so the number of layers
  54   // is a good hint for what to reserve here.
  55   shared_quad_state_list.reserve(num_layers);
  56   quad_list.reserve(kDefaultNumQuadsToReserve);
  57 }
  58
  59 RenderPass::~RenderPass() {
  60   TRACE_EVENT_OBJECT_DELETED_WITH_ID(
  61       TRACE_DISABLED_BY_DEFAULT("cc.debug.quads"),
  62       "cc::RenderPass", id.AsTracingId());
  63 }
  64
  65 scoped_ptr<RenderPass> RenderPass::Copy(Id new_id) const {
  66   scoped_ptr<RenderPass> copy_pass(Create());
  67   copy_pass->SetAll(new_id,
  68                     output_rect,
  69                     damage_rect,
  70                     transform_to_root_target,
  71                     has_transparent_background);
  72   return copy_pass.Pass();
  73 }
  74
  75 // static
  76 void RenderPass::CopyAll(const ScopedPtrVector<RenderPass>& in,
  77                          ScopedPtrVector<RenderPass>* out) {
  78   for (size_t i = 0; i < in.size(); ++i) {
  79     RenderPass* source = in[i];
  80
  81     // Since we can't copy these, it's wrong to use CopyAll in a situation where
  82     // you may have copy_requests present.
  83     DCHECK_EQ(source->copy_requests.size(), 0u);
  84
  85     scoped_ptr<RenderPass> copy_pass(Create());
  86     copy_pass->SetAll(source->id,
  87                       source->output_rect,
  88                       source->damage_rect,
  89                       source->transform_to_root_target,
  90                       source->has_transparent_background);
  91     for (size_t i = 0; i < source->shared_quad_state_list.size(); ++i) {
  92       SharedQuadState* copy_shared_quad_state =
  93           copy_pass->CreateAndAppendSharedQuadState();
  94       copy_shared_quad_state->CopyFrom(source->shared_quad_state_list[i]);
  95     }
  96     for (size_t i = 0, sqs_i = 0; i < source->quad_list.size(); ++i) {
  97       while (source->quad_list[i]->shared_quad_state !=
  98              source->shared_quad_state_list[sqs_i]) {
  99         ++sqs_i;
 100         DCHECK_LT(sqs_i, source->shared_quad_state_list.size());
 101       }
 102       DCHECK(source->quad_list[i]->shared_quad_state ==
 103              source->shared_quad_state_list[sqs_i]);
 104
 105       DrawQuad* quad = source->quad_list[i];
 106
 107       if (quad->material == DrawQuad::RENDER_PASS) {
 108         const RenderPassDrawQuad* pass_quad =
 109             RenderPassDrawQuad::MaterialCast(quad);
 110         copy_pass->CopyFromAndAppendRenderPassDrawQuad(
 111             pass_quad,
 112             copy_pass->shared_quad_state_list[sqs_i],
 113             pass_quad->render_pass_id);
 114       } else {
 115         copy_pass->CopyFromAndAppendDrawQuad(
 116             quad, copy_pass->shared_quad_state_list[sqs_i]);
 117       }
 118     }
 119     out->push_back(copy_pass.Pass());
 120   }
 121 }
 122
 123 void RenderPass::SetNew(Id id,
 124                         const gfx::Rect& output_rect,
 125                         const gfx::Rect& damage_rect,
 126                         const gfx::Transform& transform_to_root_target) {
 127   DCHECK_GT(id.layer_id, 0);
 128   DCHECK_GE(id.index, 0);
 129   DCHECK(damage_rect.IsEmpty() || output_rect.Contains(damage_rect))
 130       << "damage_rect: " << damage_rect.ToString()
 131       << " output_rect: " << output_rect.ToString();
 132
 133   this->id = id;
 134   this->output_rect = output_rect;
 135   this->damage_rect = damage_rect;
 136   this->transform_to_root_target = transform_to_root_target;
 137
 138   DCHECK(quad_list.empty());
 139   DCHECK(shared_quad_state_list.empty());
 140 }
 141
 142 void RenderPass::SetAll(Id id,
 143                         const gfx::Rect& output_rect,
 144                         const gfx::Rect& damage_rect,
 145                         const gfx::Transform& transform_to_root_target,
 146                         bool has_transparent_background) {
 147   DCHECK_GT(id.layer_id, 0);
 148   DCHECK_GE(id.index, 0);
 149
 150   this->id = id;
 151   this->output_rect = output_rect;
 152   this->damage_rect = damage_rect;
 153   this->transform_to_root_target = transform_to_root_target;
 154   this->has_transparent_background = has_transparent_background;
 155
 156   DCHECK(quad_list.empty());
 157   DCHECK(shared_quad_state_list.empty());
 158 }
 159
 160 scoped_ptr<base::Value> RenderPass::AsValue() const {
 161   scoped_ptr<base::DictionaryValue> value(new base::DictionaryValue());
 162   value->Set("output_rect", MathUtil::AsValue(output_rect).release());
 163   value->Set("damage_rect", MathUtil::AsValue(damage_rect).release());
 164   value->SetBoolean("has_transparent_background", has_transparent_background);
 165   value->SetInteger("copy_requests", copy_requests.size());
 166   scoped_ptr<base::ListValue> shared_states_value(new base::ListValue());
 167   for (size_t i = 0; i < shared_quad_state_list.size(); ++i) {
 168     shared_states_value->Append(shared_quad_state_list[i]->AsValue().release());
 169   }
 170   value->Set("shared_quad_state_list", shared_states_value.release());
 171   scoped_ptr<base::ListValue> quad_list_value(new base::ListValue());
 172   for (size_t i = 0; i < quad_list.size(); ++i) {
 173     quad_list_value->Append(quad_list[i]->AsValue().release());
 174   }
 175   value->Set("quad_list", quad_list_value.release());
 176
 177   TracedValue::MakeDictIntoImplicitSnapshotWithCategory(
 178       TRACE_DISABLED_BY_DEFAULT("cc.debug.quads"),
 179       value.get(), "cc::RenderPass", id.AsTracingId());
 180   return value.PassAs<base::Value>();
 181 }
 182
 183 SharedQuadState* RenderPass::CreateAndAppendSharedQuadState() {
 184   shared_quad_state_list.push_back(make_scoped_ptr(new SharedQuadState));
 185   return shared_quad_state_list.back();
 186 }
 187
 188 RenderPassDrawQuad* RenderPass::CopyFromAndAppendRenderPassDrawQuad(
 189     const RenderPassDrawQuad* quad,
 190     const SharedQuadState* shared_quad_state,
 191     RenderPass::Id render_pass_id) {
 192   RenderPassDrawQuad* copy_quad =
 193       CopyFromAndAppendTypedDrawQuad<RenderPassDrawQuad>(quad);
 194   copy_quad->shared_quad_state = shared_quad_state;
 195   copy_quad->render_pass_id = render_pass_id;
 196   return copy_quad;
 197 }
 198
 199 DrawQuad* RenderPass::CopyFromAndAppendDrawQuad(
 200     const DrawQuad* quad,
 201     const SharedQuadState* shared_quad_state) {
 202   switch (quad->material) {
 203     case DrawQuad::CHECKERBOARD:
 204       CopyFromAndAppendTypedDrawQuad<CheckerboardDrawQuad>(quad);
 205       break;
 206     case DrawQuad::DEBUG_BORDER:
 207       CopyFromAndAppendTypedDrawQuad<DebugBorderDrawQuad>(quad);
 208       break;
 209     case DrawQuad::IO_SURFACE_CONTENT:
 210       CopyFromAndAppendTypedDrawQuad<IOSurfaceDrawQuad>(quad);
 211       break;
 212     case DrawQuad::PICTURE_CONTENT:
 213       CopyFromAndAppendTypedDrawQuad<PictureDrawQuad>(quad);
 214       break;
 215     case DrawQuad::TEXTURE_CONTENT:
 216       CopyFromAndAppendTypedDrawQuad<TextureDrawQuad>(quad);
 217       break;
 218     case DrawQuad::SOLID_COLOR:
 219       CopyFromAndAppendTypedDrawQuad<SolidColorDrawQuad>(quad);
 220       break;
 221     case DrawQuad::TILED_CONTENT:
 222       CopyFromAndAppendTypedDrawQuad<TileDrawQuad>(quad);
 223       break;
 224     case DrawQuad::STREAM_VIDEO_CONTENT:
 225       CopyFromAndAppendTypedDrawQuad<StreamVideoDrawQuad>(quad);
 226       break;
 227     case DrawQuad::SURFACE_CONTENT:
 228       CopyFromAndAppendTypedDrawQuad<SurfaceDrawQuad>(quad);
 229       break;
 230     case DrawQuad::YUV_VIDEO_CONTENT:
 231       CopyFromAndAppendTypedDrawQuad<YUVVideoDrawQuad>(quad);
 232       break;
 233     // RenderPass quads need to use specific CopyFrom function.
 234     case DrawQuad::RENDER_PASS:
 235     case DrawQuad::INVALID:
 236       LOG(FATAL) << "Invalid DrawQuad material " << quad->material;
 237       break;
 238   }
 239   quad_list.back()->shared_quad_state = shared_quad_state;
 240   return quad_list.back();
 241 }
 242
 243 }  // namespace cc