Reland "added 565 to 8888 conversion for gpu LCD text rendering for macOS"

This reverts commit cf274da6faa9d32e08053180c8113fcaab666028.

Reason for revert: removed the static initializer

Original change's description:
> Revert "added 565 to 8888 conversion for gpu LCD text rendering for macOS"
>
> This reverts commit e6f2ecafaf0efecacfd4256f280e26ee74cb7e16.
>
> Reason for revert: breaking chrome roll cause of static initializers
>
> Original change's description:
> > added 565 to 8888 conversion for gpu LCD text rendering for macOS
> >
> > Bug: skia:
> > Change-Id: Ie24160bb098d388bf4ad69d0c2f9f8ed4beb215c
> > Reviewed-on: https://skia-review.googlesource.com/134508
> > Commit-Queue: Timothy Liang <timliang@google.com>
> > Reviewed-by: Jim Van Verth <jvanverth@google.com>
>
> TBR=egdaniel@google.com,jvanverth@google.com,timliang@google.com
>
> Change-Id: Ida97a4085c93fcb990999ab71f99364ec2ef86b7
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: skia:
> Reviewed-on: https://skia-review.googlesource.com/135000
> Reviewed-by: Greg Daniel <egdaniel@google.com>
> Commit-Queue: Greg Daniel <egdaniel@google.com>

Change-Id: I40c29b73970c55b3579a0169bbad666a798b2348
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/135021
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Timothy Liang <timliang@google.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/gpu/text/GrGlyphCache.h b/src/gpu/text/GrGlyphCache.h
index 7e707ec64c..68386d2c1c 100644
--- a/src/gpu/text/GrGlyphCache.h
+++ b/src/gpu/text/GrGlyphCache.h
@@ -12,6 +12,7 @@
 #include "GrGlyph.h"
 #include "SkArenaAlloc.h"
 #include "SkGlyphCache.h"
+#include "SkMasks.h"
 #include "SkTDynamicHash.h"
 
 class GrGlyphCache;
@@ -108,6 +109,8 @@ private:
  */
 class GrGlyphCache {
 public:
+    static std::unique_ptr<const SkMasks> k565Masks;
+
     GrGlyphCache(const GrCaps* caps, size_t maxTextureBytes);
     ~GrGlyphCache();
 
@@ -129,6 +132,14 @@ public:
 
     void freeAll();
 
+    static void InitMask() {
+        static SkOnce once;
+        once([] {
+            k565Masks.reset(SkMasks::CreateMasks({0xF800, 0x07E0, 0x001F, 0},
+                            GrMaskFormatBytesPerPixel(kA565_GrMaskFormat) * 8));
+        });
+    }
+
     static void HandleEviction(GrDrawOpAtlas::AtlasID, void*);
     static SkScalar ComputeGlyphSizeLimit(int maxTextureSize, size_t maxTextureBytes);