media: replace LUMINANCE_F16 by RG_88 for 9/10-bit h264 videos

cc/base/switches.cc

 // Copyright (c) 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/base/switches.h"
 
 #include "base/command_line.h"
 
 namespace cc {
 namespace switches {
@@ skipping 26 matching lines @@
 const char kTopControlsShowThreshold[] = "top-controls-show-threshold";
 
 // Re-rasters everything multiple times to simulate a much slower machine.
 // Give a scale factor to cause raster to take that many times longer to
 // complete, such as --slow-down-raster-scale-factor=25.
 const char kSlowDownRasterScaleFactor[] = "slow-down-raster-scale-factor";
 
 // Compress tile textures for GPUs supporting it.
 const char kEnableTileCompression[] = "enable-tile-compression";
 
+// Use RG8 texture instead of half float conversion by CPU.
+const char kDisableHalfFloatConversionTexture[] =

[hubbe, 2016/09/27 20:49:51]

Please use the features API instead.

[dshwang, 2016/09/28 10:33:27]

Got it.

[hubbe, 2016/09/28 17:57:44]

Usually people don't reply until they have actually implemented the change. (Did
you forget to upload?)

[dshwang, 2016/09/29 18:52:27]

Usually I did :) I want to listen to your opinion about shader, so I asked
without new patch. your answer was very helpful!

I added kUseRGTexture in new patch set.
const base::Feature kUseRGTexture{"use-rg-texture",
                                  base::FEATURE_DISABLED_BY_DEFAULT};

+    "disable-half-float-conversion-texture";
+
 // Enable color space aware rasterization and compositing.
 const char kEnableColorCorrectRendering[] = "enable-color-correct-rendering";
 
 // Enables the GPU benchmarking extension
 const char kEnableGpuBenchmarking[] = "enable-gpu-benchmarking";
 
 // Renders a border around compositor layers to help debug and study
 // layer compositing.
 const char kShowCompositedLayerBorders[] = "show-composited-layer-borders";
 const char kUIShowCompositedLayerBorders[] = "ui-show-layer-borders";
@@ skipping 41 matching lines @@
 const char kCCLayerTreeTestNoTimeout[] = "cc-layer-tree-test-no-timeout";
 
 // Increases timeout for memory checkers.
 const char kCCLayerTreeTestLongTimeout[] = "cc-layer-tree-test-long-timeout";
 
 // Makes pixel tests write their output instead of read it.
 const char kCCRebaselinePixeltests[] = "cc-rebaseline-pixeltests";
 
 }  // namespace switches
 }  // namespace cc