Revert "Revert "Revert "Revert "Revert "Revert "Add private grpixelconfigs for alpha_8 and alpha_half""""""

This reverts commit b092cea5b17420926557d0e8b8d2df6db894725c.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> Revert "Revert "Revert "Revert "Revert "Add private grpixelconfigs for alpha_8 and alpha_half"""""
>
> This reverts commit 68ab18611a03449915dfe2ffef96a849b72aa95c.
>
> Reason for revert: Command Buffer bot
>
> Original change's description:
> > Revert "Revert "Revert "Revert "Add private grpixelconfigs for alpha_8 and alpha_half""""
> >
> > This reverts commit 3b2f5b60ff9a82ade01746d7e7cbbcc9348d6c03.
> >
> > Reason for revert: more attempts at a fixed version
> >
> > Original change's description:
> > > Revert "Revert "Revert "Add private grpixelconfigs for alpha_8 and alpha_half"""
> > >
> > > This reverts commit b5fb7cf0163ccb939f90ecf53ef70732c01f23ae.
> > >
> > > Reason for revert: breaking more devices
> > >
> > > Original change's description:
> > > > Revert "Revert "Add private grpixelconfigs for alpha_8 and alpha_half""
> > > >
> > > > This reverts commit 0fb6db4be6e30777cc5c87f1b601e8c4aacff2b1.
> > > >
> > > > Reason for revert: fixed bug
> > > >
> > > > Original change's description:
> > > > > Revert "Add private grpixelconfigs for alpha_8 and alpha_half"
> > > > >
> > > > > This reverts commit 33d17cbb003975fff895954435183756f9893c17.
> > > > >
> > > > > Reason for revert: broke intel bots
> > > > >
> > > > > Original change's description:
> > > > > > Add private grpixelconfigs for alpha_8 and alpha_half
> > > > > >
> > > > > > Bug: skia:
> > > > > > Change-Id: I5191b6e045aea2a5af2b305b5972ad1e638a7ace
> > > > > > Reviewed-on: https://skia-review.googlesource.com/71763
> > > > > > Reviewed-by: Brian Salomon <bsalomon@google.com>
> > > > > > Commit-Queue: Greg Daniel <egdaniel@google.com>
> > > > >
> > > > > TBR=egdaniel@google.com,bsalomon@google.com
> > > > >
> > > > > Change-Id: I6fff9241f7878f1ec7fad2663df9922c9cd8f628
> > > > > No-Presubmit: true
> > > > > No-Tree-Checks: true
> > > > > No-Try: true
> > > > > Bug: skia:
> > > > > Reviewed-on: https://skia-review.googlesource.com/72180
> > > > > Reviewed-by: Greg Daniel <egdaniel@google.com>
> > > > > Commit-Queue: Greg Daniel <egdaniel@google.com>
> > > >
> > > > TBR=egdaniel@google.com,bsalomon@google.com
> > > >
> > > > Change-Id: Ie028961ecbf5934c53cb859e019e548935b3af79
> > > > Reviewed-on: https://skia-review.googlesource.com/72241
> > > > Commit-Queue: Greg Daniel <egdaniel@google.com>
> > > > Reviewed-by: Greg Daniel <egdaniel@google.com>
> > >
> > > TBR=egdaniel@google.com,bsalomon@google.com
> > >
> > > Change-Id: Ieaac3eca2fc4919699c7de61a3c33348e92a7da0
> > > No-Presubmit: true
> > > No-Tree-Checks: true
> > > No-Try: true
> > > Reviewed-on: https://skia-review.googlesource.com/72660
> > > Reviewed-by: Greg Daniel <egdaniel@google.com>
> > > Commit-Queue: Greg Daniel <egdaniel@google.com>
> >
> > TBR=egdaniel@google.com,bsalomon@google.com
> >
> > Change-Id: Ifcf1b97c2a9493ce9a77a8aa0f4e5a8fb393def3
> > Reviewed-on: https://skia-review.googlesource.com/72802
> > Commit-Queue: Greg Daniel <egdaniel@google.com>
> > Reviewed-by: Greg Daniel <egdaniel@google.com>
>
> TBR=egdaniel@google.com,bsalomon@google.com
>
> Change-Id: Ie2277f59f5a1294392b5d153ce2429c20b3e4182
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://skia-review.googlesource.com/73320
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Brian Osman <brianosman@google.com>

TBR=egdaniel@google.com,bsalomon@google.com,brianosman@google.com

Change-Id: Ibba9d2109f35ea710e313d604b3e5ee742916234
Reviewed-on: https://skia-review.googlesource.com/73360
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/src/gpu/mtl/GrMtlUtil.mm b/src/gpu/mtl/GrMtlUtil.mm
index 24643669ea..cc40e47c0b 100644
--- a/src/gpu/mtl/GrMtlUtil.mm
+++ b/src/gpu/mtl/GrMtlUtil.mm
@@ -7,6 +7,8 @@
 
 #include "GrMtlUtil.h"
 
+#include "GrTypesPriv.h"
+
 bool GrPixelConfigToMTLFormat(GrPixelConfig config, MTLPixelFormat* format) {
     MTLPixelFormat dontCare;
     if (!format) {
@@ -45,9 +47,12 @@ bool GrPixelConfigToMTLFormat(GrPixelConfig config, MTLPixelFormat* format) {
 #else
             return false;
 #endif
-        case kAlpha_8_GrPixelConfig:
+        case kAlpha_8_GrPixelConfig: // fall through
+        case kAlpha_8_as_Red_GrPixelConfig:
             *format = MTLPixelFormatR8Unorm;
             return true;
+        case kAlpha_8_as_Alpha_GrPixelConfig:
+            return false;
         case kGray_8_GrPixelConfig:
             *format = MTLPixelFormatR8Unorm;
             return true;
@@ -60,7 +65,8 @@ bool GrPixelConfigToMTLFormat(GrPixelConfig config, MTLPixelFormat* format) {
         case kRGBA_half_GrPixelConfig:
             *format = MTLPixelFormatRGBA16Float;
             return true;
-        case kAlpha_half_GrPixelConfig:
+        case kAlpha_half_GrPixelConfig: // fall through
+        case kAlpha_half_as_Red_GrPixelConfig:
             *format = MTLPixelFormatR16Float;
             return true;
     }