pass legal premul values to bitmap -- do we still need this GM?

gm/bitmaprect.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "gm.h"
 #include "SkCanvas.h"
 #include "SkGradientShader.h"
@@ skipping 143 matching lines @@
 
     static const int gXSize = 4096;
     static const int gYSize = 4096;
     static const int gBorderWidth = 10;
 
     bitmap->allocN32Pixels(gXSize, gYSize);
     for (int y = 0; y < gYSize; ++y) {
         for (int x = 0; x < gXSize; ++x) {
             if (x <= gBorderWidth || x >= gXSize-gBorderWidth ||
                 y <= gBorderWidth || y >= gYSize-gBorderWidth) {
-                *bitmap->getAddr32(x, y) = 0x88FFFFFF;
+                *bitmap->getAddr32(x, y) = SkPreMultiplyColor(0x88FFFFFF);
             } else {
-                *bitmap->getAddr32(x, y) = 0x88FF0000;
+                *bitmap->getAddr32(x, y) = SkPreMultiplyColor(0x88FF0000);
             }
         }
     }
 }
 
 // This GM attempts to reveal any issues we may have when the GPU has to
 // break up a large texture in order to draw it. The XOR transfer mode will
 // create stripes in the image if there is imprecision in the destination
 // tile placement.
 class DrawBitmapRect4 : public skiagm::GM {
@@ skipping 111 matching lines @@
 static skiagm::GMRegistry reg0(MyFactory0);
 static skiagm::GMRegistry reg1(MyFactory1);
 
 static skiagm::GMRegistry reg2(MyFactory2);
 
 #ifndef SK_BUILD_FOR_ANDROID
 static skiagm::GMRegistry reg3(MyFactory3);
 static skiagm::GMRegistry reg4(MyFactory4);
 #endif