add kGray_8_SkColorType

src/core/SkBitmapProcState_procs.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 // Define NAME_WRAP(x) before including this header to perform name-wrapping
 // E.g. for ARM NEON, defined it as 'x ## _neon' to ensure all important
@@ skipping 206 matching lines @@
 
 #define MAKENAME(suffix)        NAME_WRAP(SA8_alpha_D32 ## suffix)
 #define DSTSIZE                 32
 #define SRCTYPE                 uint8_t
 #define CHECKSTATE(state)       SkASSERT(kAlpha_8_SkColorType == state.fBitmap->colorType());
 #define PREAMBLE(state)         const SkPMColor pmColor = state.fPaintPMColor;
 #define RETURNDST(src)          SkAlphaMulQ(pmColor, SkAlpha255To256(src))
 #define SRC_TO_FILTER(src)      src
 #include "SkBitmapProcState_sample.h"
 
+// SRC == Gray8
+
+#undef FILTER_PROC
+#define FILTER_PROC(x, y, a, b, c, d, dst) \
+    do {                                                        \
+        unsigned tmp = Filter_8(x, y, a, b, c, d);              \
+        SkPMColor color = SkPackARGB32(0xFF, tmp, tmp, tmp);    \
+        *(dst) = SkAlphaMulQ(color, alphaScale);                \
+    } while (0)
+
+#define MAKENAME(suffix)        NAME_WRAP(SG8_alpha_D32 ## suffix)
+#define DSTSIZE                 32
+#define SRCTYPE                 uint8_t
+#define CHECKSTATE(state)       SkASSERT(kGray_8_SkColorType == state.fBitmap->colorType());
+#define PREAMBLE(state)         unsigned alphaScale = state.fAlphaScale
+#define RETURNDST(src)          SkAlphaMulQ(SkPackARGB32(0xFF, src, src, src), alphaScale)
+#define SRC_TO_FILTER(src)      src
+#include "SkBitmapProcState_sample.h"
+
 /*****************************************************************************
  *
  *  D16 functions
  *
  */
 
 // SRC == 8888
 
 #undef FILTER_PROC
 #define FILTER_PROC(x, y, a, b, c, d, dst) \
@@ skipping 97 matching lines @@
 #define MAKENAME(suffix)        NAME_WRAP(Clamp_SI8_opaque_D32 ## suffix)
 #define SRCTYPE                 uint8_t
 #define DSTTYPE                 uint32_t
 #define CHECKSTATE(state)       SkASSERT(kIndex_8_SkColorType == state.fBitmap->colorType())
 #define PREAMBLE(state)         const SkPMColor* SK_RESTRICT table = state.fBitmap->getColorTable()->readColors()
 #define SRC_TO_FILTER(src)      table[src]
 #define POSTAMBLE(state)
 #include "SkBitmapProcState_shaderproc.h"
 
 #undef NAME_WRAP