support gray8 destinations on CPU

 - fill in a couple switches to allow software to rasterize gray8
 - add a gray8 config to DM so we can test it
 - enable this config on some bots

Today we draw gray8 using SkRasterPipeline, loading it as {g,g,g,1}
and storing using the same fixed luma math as SkLumaColorFilter.
One day it'd be nice to use the color space's luma vector if present.

Can we support this on GPU?

Change-Id: I4ee661c8bd5f33f5db2433ffb6e1bc2483af8397
Reviewed-on: https://skia-review.googlesource.com/92681
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/dm/DM.cpp b/dm/DM.cpp
index 4728933f2c..ee9a7f5678 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -894,6 +894,7 @@ static Sink* create_sink(const GrContextOptions& grCtxOptions, const SkCommandLi
         auto srgbColorSpace = SkColorSpace::MakeSRGB();
         auto srgbLinearColorSpace = SkColorSpace::MakeSRGBLinear();
 
+        SINK("g8",      RasterSink, kGray_8_SkColorType);
         SINK("565",     RasterSink, kRGB_565_SkColorType);
         SINK("8888",    RasterSink, kN32_SkColorType);
         SINK("srgb",    RasterSink, kN32_SkColorType, srgbColorSpace);