diff --git a/src/gpu/SkGr.cpp b/src/gpu/SkGr.cpp
index 5f0e9dc..b144d01 100644
--- a/src/gpu/SkGr.cpp
+++ b/src/gpu/SkGr.cpp
@@ -319,6 +319,9 @@
         case kRGB_888X_GrPixelConfig:
         case kRG_88_GrPixelConfig:
         case kBGRA_8888_GrPixelConfig:
+        // Experimental (for P016 and P010)
+        case kR_16_GrPixelConfig:
+        case kRG_1616_GrPixelConfig:
             return 0;
         case kRGB_565_GrPixelConfig:
             return 1;