store SkAlphaType inside SkBitmap, on road to support unpremul

bench/TileBench.cpp

 
 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBenchmark.h"
 #include "SkBitmap.h"
@@ skipping 30 matching lines @@
     ConstXTileBench(SkShader::TileMode xTile,
                     SkShader::TileMode yTile,
                     bool doFilter,
                     bool doTrans,
                     bool doScale)
         : fDoFilter(doFilter)
         , fDoTrans(doTrans)
         , fDoScale(doScale) {
         SkBitmap bm;
 
-        bm.setConfig(SkBitmap::kARGB_8888_Config, kWidth, kHeight);
-
+        bm.setConfig(SkBitmap::kARGB_8888_Config, kWidth, kHeight, 0,
+                     kOpaque_SkAlphaType);
         bm.allocPixels();
         bm.eraseColor(SK_ColorWHITE);
-        bm.setIsOpaque(true);
 
         create_gradient(&bm);
 
         SkShader* s = SkShader::CreateBitmapShader(bm, xTile, yTile);
         fPaint.setShader(s)->unref();
 
         fName.printf("constXTile_");
 
         static const char* gTileModeStr[SkShader::kTileModeCount] = { "C", "R", "M" };
         fName.append(gTileModeStr[xTile]);
@@ skipping 58 matching lines @@
 DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, true, false, true))
 DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, true, false, false))
 
 DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, false, true, true))
 DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, false, true, false))
 DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, false, true, true))
 
 DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, true, true, false))
 DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, true, true, true))
 DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, true, true, false))