First pass at GPU veto

tests/PictureTest.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapDevice.h"
 #include "SkCanvas.h"
 #include "SkColorPriv.h"
+#include "SkDashPathEffect.h"
 #include "SkData.h"
 #include "SkDecodingImageGenerator.h"
 #include "SkError.h"
 #include "SkImageEncoder.h"
 #include "SkImageGenerator.h"
 #include "SkPaint.h"
 #include "SkPicture.h"
 #include "SkPictureRecorder.h"
 #include "SkPictureUtils.h"
 #include "SkRRect.h"
@@ skipping 666 matching lines @@
         canvas->restore();
     } else if (unit <= 0.9) {
 //        SkDebugf("clip\n");
         canvas->clipRect(rect);
     } else {
 //        SkDebugf("draw\n");
         canvas->drawPaint(paint);
     }
 }
 
+static void test_gpu_veto(skiatest::Reporter* reporter) {
+
+    SkPictureRecorder recorder;
+
+    SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
+    {
+        SkPath path;
+        path.moveTo(0, 0);
+        path.lineTo(50, 50);
+
+        SkScalar intervals[] = { 1.0f, 1.0f };
+        SkAutoTUnref<SkDashPathEffect> dash(SkDashPathEffect::Create(intervals, 2, 0));
+
+        SkPaint paint;
+        paint.setStyle(SkPaint::kStroke_Style);
+        paint.setPathEffect(dash);
+
+        canvas->drawPath(path, paint);
+    }
+    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
+    // path effects currently render an SkPicture undesireable for GPU rendering
+    REPORTER_ASSERT(reporter, !picture->suitableForGpuRasterization(NULL));
+
+    canvas = recorder.beginRecording(100, 100, NULL, 0);
+    {
+        SkPath path;
+
+        path.moveTo(0, 0);
+        path.lineTo(0, 50);
+        path.lineTo(25, 25);
+        path.lineTo(50, 50);
+        path.lineTo(50, 0);
+        path.close();
+        REPORTER_ASSERT(reporter, !path.isConvex());
+
+        SkPaint paint;
+        canvas->drawPath(path, paint);
+    }
+    picture.reset(recorder.endRecording());
+    // concave paths currently render an SkPicture undesireable for GPU rendering
+    REPORTER_ASSERT(reporter, !picture->suitableForGpuRasterization(NULL));
+}
+
 static void set_canvas_to_save_count_4(SkCanvas* canvas) {
     canvas->restoreToCount(1);
     canvas->save();
     canvas->save();
     canvas->save();
 }
 
 static void test_unbalanced_save_restores(skiatest::Reporter* reporter) {
     SkCanvas testCanvas(100, 100);
     set_canvas_to_save_count_4(&testCanvas);
@@ skipping 483 matching lines @@
 
 DEF_TEST(Picture, reporter) {
 #ifdef SK_DEBUG
     test_deleting_empty_playback();
     test_serializing_empty_picture();
 #else
     test_bad_bitmap();
 #endif
     test_unbalanced_save_restores(reporter);
     test_peephole();
+    test_gpu_veto(reporter);
     test_gatherpixelrefs(reporter);
     test_gatherpixelrefsandrects(reporter);
     test_bitmap_with_encoded_data(reporter);
     test_clone_empty(reporter);
     test_draw_empty(reporter);
     test_clip_bound_opt(reporter);
     test_clip_expansion(reporter);
     test_hierarchical(reporter);
     test_gen_id(reporter);
 }
@@ skipping 24 matching lines @@
     SkAutoTUnref<SkPicture> picture(recorder.endRecording());
 }
 
 DEF_TEST(Canvas_EmptyBitmap, r) {
     SkBitmap dst;
     dst.allocN32Pixels(10, 10);
     SkCanvas canvas(dst);
 
     test_draw_bitmaps(&canvas);
 }