MVKImage: Fix compilation with Xcode 11.
We can't rely on those enums not being re-`#define`d, because they're
only re-`#define`d like that in MVKPixelFormats.mm.
Signed-off-by: Chip Davis <cdavis@codeweavers.com>
diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKImage.mm b/MoltenVK/MoltenVK/GPUObjects/MVKImage.mm
index 35bd99e..16771af 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKImage.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKImage.mm
@@ -1669,7 +1669,7 @@
switch (mtlPixFmt) {
case MTLPixelFormatR8Unorm:
-#ifndef MTLPixelFormatR8Unorm_sRGB
+#if MVK_MACOS_APPLE_SILICON || MVK_IOS_OR_TVOS
case MTLPixelFormatR8Unorm_sRGB:
#endif
case MTLPixelFormatR8Snorm:
@@ -1689,7 +1689,7 @@
break;
case MTLPixelFormatRG8Unorm:
-#ifndef MTLPixelFormatRG8Unorm_sRGB
+#if MVK_MACOS_APPLE_SILICON || MVK_IOS_OR_TVOS
case MTLPixelFormatRG8Unorm_sRGB:
#endif
case MTLPixelFormatRG8Snorm:
