Add R11 EAC pixel config

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.
  */
 
 
 
@@ skipping 265 matching lines @@
     kBGRA_8888_GrPixelConfig,
     /** 
      * ETC1 Compressed Data
      */
     kETC1_GrPixelConfig,
     /**
      * LATC/RGTC/3Dc/BC4 Compressed Data
      */
     kLATC_GrPixelConfig,
 
-    kLast_GrPixelConfig = kLATC_GrPixelConfig
+    /**
+     * R11 EAC Compressed Data
+     * (Corresponds to section C.3.5 of the OpenGL 4.4 core profile spec)
+     */
+    kR11_EAC_GrPixelConfig,
+
+    kLast_GrPixelConfig = kR11_EAC_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)
     static const GrPixelConfig kSkia8888_GrPixelConfig = kRGBA_8888_GrPixelConfig;
 #else
     #error "SK_*32_SHIFT values must correspond to GL_BGRA or GL_RGBA format."
 #endif
 
 // Returns true if the pixel config is a GPU-specific compressed format
 // representation.
 static inline bool GrPixelConfigIsCompressed(GrPixelConfig config) {
     switch (config) {
         case kETC1_GrPixelConfig:
         case kLATC_GrPixelConfig:
+        case kR11_EAC_GrPixelConfig:
             return true;
         default:
             return false;
     }
 }
 
 // Returns true if the pixel config is 32 bits per pixel
 static inline bool GrPixelConfigIs8888(GrPixelConfig config) {
     switch (config) {
         case kRGBA_8888_GrPixelConfig:
@@ skipping 38 matching lines @@
         case kETC1_GrPixelConfig:
         case kRGB_565_GrPixelConfig:
             return true;
         default:
             return false;
     }
 }
 
 static inline bool GrPixelConfigIsAlphaOnly(GrPixelConfig config) {
     switch (config) {
+        case kR11_EAC_GrPixelConfig:
         case kLATC_GrPixelConfig:
         case kAlpha_8_GrPixelConfig:
             return true;
         default:
             return false;
     }
 }
 
 /**
  * Optional bitfield flags that can be passed to createTexture.
@@ skipping 259 matching lines @@
 };
 
 /**
  * Returns the data size for the given compressed pixel config
  */ 
 static inline size_t GrCompressedFormatDataSize(GrPixelConfig config,
                                                 int width, int height) {
     SkASSERT(GrPixelConfigIsCompressed(config));
 
     switch (config) {
+        case kR11_EAC_GrPixelConfig:
         case kLATC_GrPixelConfig:
         case kETC1_GrPixelConfig:
             SkASSERT((width & 3) == 0);
             SkASSERT((height & 3) == 0);
             return (width >> 2) * (height >> 2) * 8;
 
         default:
             SkFAIL("Unknown compressed pixel config");
             return 4 * width * height;
     }
 }
 
 /**
  * This value translates to reseting all the context state for any backend.
  */
 static const uint32_t kAll_GrBackendState = 0xffffffff;
 
 ///////////////////////////////////////////////////////////////////////////////
 
 #endif