Fix 4444 on Vulkan devices who don't support RGBA_4444

src/gpu/vk/GrVkUtil.cpp

Index: src/gpu/vk/GrVkUtil.cpp
diff --git a/src/gpu/vk/GrVkUtil.cpp b/src/gpu/vk/GrVkUtil.cpp
index 760b20b4580e7f75de814d032b59cd954077aae5..0a343de0976cf77d0bf3a30ff0d414100149630d 100644
--- a/src/gpu/vk/GrVkUtil.cpp
+++ b/src/gpu/vk/GrVkUtil.cpp
@@ -30,7 +30,7 @@ bool GrPixelConfigToVkFormat(GrPixelConfig config, VkFormat* format) {
             *format = VK_FORMAT_R5G6B5_UNORM_PACK16;
             break;
         case kRGBA_4444_GrPixelConfig:
-            *format = VK_FORMAT_R4G4B4A4_UNORM_PACK16;
+            *format = VK_FORMAT_B4G4R4A4_UNORM_PACK16;

[bsalomon, 2016/08/11 18:02:08]

comment?

[egdaniel, 2016/08/11 20:09:15]

Done.

             break;
         case kIndex_8_GrPixelConfig:
             // No current vulkan support for this config
@@ -88,7 +88,7 @@ bool GrVkFormatToPixelConfig(VkFormat format, GrPixelConfig* config) {
         case VK_FORMAT_R5G6B5_UNORM_PACK16:
             *config = kRGB_565_GrPixelConfig;
             break;
-        case VK_FORMAT_R4G4B4A4_UNORM_PACK16:
+        case VK_FORMAT_B4G4R4A4_UNORM_PACK16:

[bsalomon, 2016/08/11 18:02:08]

comment?

[egdaniel, 2016/08/11 20:09:15]

Done.

             *config = kRGBA_4444_GrPixelConfig;
             break;
         case VK_FORMAT_R8_UNORM: