Implements core logic for Pixel Canvas

cc/benchmarks/rasterize_and_record_benchmark_impl.cc

 // Copyright 2013 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/benchmarks/rasterize_and_record_benchmark_impl.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <limits>
@@ skipping 10 matching lines @@
 #include "ui/gfx/geometry/rect.h"
 
 namespace cc {
 
 namespace {
 
 const int kDefaultRasterizeRepeatCount = 100;
 
 void RunBenchmark(RasterSource* raster_source,
                   const gfx::Rect& content_rect,
-                  float contents_scale,
+                  const gfx::AxisTransform2d& raster_transform,
                   size_t repeat_count,
                   base::TimeDelta* min_time,
                   bool* is_solid_color) {
   // Parameters for LapTimer.
   const int kTimeLimitMillis = 1;
   const int kWarmupRuns = 0;
   const int kTimeCheckInterval = 1;
 
   *min_time = base::TimeDelta::Max();
   for (size_t i = 0; i < repeat_count; ++i) {
     // Run for a minimum amount of time to avoid problems with timer
     // quantization when the layer is very small.
     LapTimer timer(kWarmupRuns,
                    base::TimeDelta::FromMilliseconds(kTimeLimitMillis),
                    kTimeCheckInterval);
     SkColor color = SK_ColorTRANSPARENT;
     *is_solid_color = raster_source->PerformSolidColorAnalysis(
-        content_rect, contents_scale, &color);
+        content_rect, raster_transform, &color);
 
     do {
       SkBitmap bitmap;
       bitmap.allocPixels(SkImageInfo::MakeN32Premul(content_rect.width(),
                                                     content_rect.height()));
       SkCanvas canvas(bitmap);
       raster_source->PlaybackToCanvas(
           &canvas, gfx::ColorSpace(), content_rect, content_rect,
-          gfx::AxisTransform2d(contents_scale, gfx::Vector2dF()),
+          gfx::AxisTransform2d(raster_transform.scale(), gfx::Vector2dF()),
           RasterSource::PlaybackSettings());
 
       timer.NextLap();
     } while (!timer.HasTimeLimitExpired());
     base::TimeDelta duration =
         base::TimeDelta::FromMillisecondsD(timer.MsPerLap());
     if (duration < *min_time)
       *min_time = duration;
   }
 }
@@ skipping 113 matching lines @@
       tiling_set->AddTiling(gfx::AxisTransform2d(), layer->GetRasterSource());
   tiling->set_resolution(HIGH_RESOLUTION);
   tiling->CreateAllTilesForTesting();
   RasterSource* raster_source = tiling->raster_source().get();
   for (PictureLayerTiling::CoverageIterator it(tiling, 1.f,
                                                layer->visible_layer_rect());
        it; ++it) {
     DCHECK(*it);
 
     gfx::Rect content_rect = (*it)->content_rect();
-    float contents_scale = (*it)->raster_transform().scale();
 
     base::TimeDelta min_time;
     bool is_solid_color = false;
-    RunBenchmark(raster_source, content_rect, contents_scale,
+    RunBenchmark(raster_source, content_rect, (*it)->raster_transform(),
                  rasterize_repeat_count_, &min_time, &is_solid_color);
 
     int tile_size = content_rect.width() * content_rect.height();
     if (layer->contents_opaque())
       rasterize_results_.pixels_rasterized_as_opaque += tile_size;
 
     if (!is_solid_color)
       rasterize_results_.pixels_rasterized_with_non_solid_color += tile_size;
 
     rasterize_results_.pixels_rasterized += tile_size;
@@ skipping 11 matching lines @@
       pixels_rasterized_as_opaque(0),
       total_memory_usage(0),
       total_layers(0),
       total_picture_layers(0),
       total_picture_layers_with_no_content(0),
       total_picture_layers_off_screen(0) {}
 
 RasterizeAndRecordBenchmarkImpl::RasterizeResults::~RasterizeResults() {}
 
 }  // namespace cc