Add standard way to indicate GM is GPU-only.

gm/beziereffects.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.
  */
 
 // This test only works with the GPU backend.
 
@@ skipping 30 matching lines @@
     }
 
     SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(800, 800);
     }
 
 
     void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         GrRenderTarget* rt = canvas->internal_private_accessTopLayerRenderTarget();
         if (NULL == rt) {
+            this->drawGpuOnlyMessage(canvas);
             return;
         }
         GrContext* context = rt->getContext();
         if (NULL == context) {
             return;
         }
 
         struct Vertex {
             SkPoint fPosition;
             float   fKLM[4]; // The last value is ignored. The effect expects a vec4f.
@@ skipping 135 matching lines @@
     }
 
     SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(800, 800);
     }
 
 
     void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         GrRenderTarget* rt = canvas->internal_private_accessTopLayerRenderTarget();
         if (NULL == rt) {
+            this->drawGpuOnlyMessage(canvas);
             return;
         }
         GrContext* context = rt->getContext();
         if (NULL == context) {
             return;
         }
 
         struct Vertex {
             SkPoint fPosition;
             float   fKLM[4]; // The last value is ignored. The effect expects a vec4f.
@@ skipping 168 matching lines @@
     }
 
     SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(800, 800);
     }
 
 
     void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         GrRenderTarget* rt = canvas->internal_private_accessTopLayerRenderTarget();
         if (NULL == rt) {
+            this->drawGpuOnlyMessage(canvas);
             return;
         }
         GrContext* context = rt->getContext();
         if (NULL == context) {
             return;
         }
 
         struct Vertex {
             SkPoint fPosition;
             float   fUV[4]; // The last two values are ignored. The effect expects a vec4f.
@@ skipping 108 matching lines @@
     typedef GM INHERITED;
 };
 
 DEF_GM( return SkNEW(BezierCubicEffects); )
 DEF_GM( return SkNEW(BezierConicEffects); )
 DEF_GM( return SkNEW(BezierQuadEffects); )
 
 }
 
 #endif