Add RGBA half float texture format.

include/gpu/GrTypes.h

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrTypes_DEFINED
 #define GrTypes_DEFINED
@@ skipping 232 matching lines @@
     /**
      * Byte order is r, g, b, a.  This color format is 32 bits per channel
      */
     kRGBA_float_GrPixelConfig,
 
     /**
      * This color format is a single 16 bit float channel
      */
     kAlpha_half_GrPixelConfig,
 
-    kLast_GrPixelConfig = kAlpha_half_GrPixelConfig
+    /**
+    * Byte order is r, g, b, a.  This color format is 16 bits per channel
+    */
+    kRGBA_half_GrPixelConfig,
+
+    kLast_GrPixelConfig = kRGBA_half_GrPixelConfig
 };
 static const int kGrPixelConfigCnt = kLast_GrPixelConfig + 1;
 
 // Aliases for pixel configs that match skia's byte order.
 #ifndef SK_CPU_LENDIAN
     #error "Skia gpu currently assumes little endian"
 #endif
 #if SK_PMCOLOR_BYTE_ORDER(B,G,R,A)
     static const GrPixelConfig kSkia8888_GrPixelConfig = kBGRA_8888_GrPixelConfig;
 #elif SK_PMCOLOR_BYTE_ORDER(R,G,B,A)
@@ skipping 64 matching lines @@
         case kAlpha_8_GrPixelConfig:
             return 1;
         case kRGB_565_GrPixelConfig:
         case kRGBA_4444_GrPixelConfig:
         case kAlpha_half_GrPixelConfig:
             return 2;
         case kRGBA_8888_GrPixelConfig:
         case kBGRA_8888_GrPixelConfig:
         case kSRGBA_8888_GrPixelConfig:
             return 4;
+        case kRGBA_half_GrPixelConfig:
+            return 8;
         case kRGBA_float_GrPixelConfig:
             return 16;
         default:
             return 0;
     }
 }
 
 static inline size_t GrUnpackAlignment(GrPixelConfig config) {
     SkASSERT(!GrPixelConfigIsCompressed(config));
     switch (config) {
         case kAlpha_8_GrPixelConfig:
             return 1;
         case kRGB_565_GrPixelConfig:
         case kRGBA_4444_GrPixelConfig:
         case kAlpha_half_GrPixelConfig:
+        case kRGBA_half_GrPixelConfig:
             return 2;
         case kRGBA_8888_GrPixelConfig:
         case kBGRA_8888_GrPixelConfig:
         case kSRGBA_8888_GrPixelConfig:
         case kRGBA_float_GrPixelConfig:
             return 4;
         default:
             return 0;
     }
 }
@@ skipping 257 matching lines @@
 public:
     GrAutoMalloc() : INHERITED() {}
     explicit GrAutoMalloc(size_t size) : INHERITED(size) {}
     virtual ~GrAutoMalloc() {}
 private:
     typedef GrAutoMallocBaseType INHERITED;
 };
 
 #undef GrAutoMallocBaseType
 #endif