Fix GPU sRGB mode in viewer

Need to attach the sRGB color space to the surface to get past validation.

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3905

Change-Id: Icce1c8cf35c31023c116cbcddf8848c4c92cd212
Reviewed-on: https://skia-review.googlesource.com/3905
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/tools/viewer/sk_app/WindowContext.cpp b/tools/viewer/sk_app/WindowContext.cpp
index e8658806e3..a39bb20e5b 100755
--- a/tools/viewer/sk_app/WindowContext.cpp
+++ b/tools/viewer/sk_app/WindowContext.cpp
@@ -52,7 +52,10 @@ sk_sp<SkSurface> WindowContext::createSurface(
             return SkSurface::MakeRaster(info, &fSurfaceProps);
         }
     } else {
-        return SkSurface::MakeFromBackendRenderTarget(fContext, *rtDesc, &fSurfaceProps);
+        sk_sp<SkColorSpace> colorSpace = GrPixelConfigIsSRGB(rtDesc->fConfig)
+            ? SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named) : nullptr;
+        return SkSurface::MakeFromBackendRenderTarget(fContext, *rtDesc, colorSpace,
+                                                      &fSurfaceProps);
     }
 }