Show perlin issue

gm/perlinnoise.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 "gm.h"
 #include "SkPerlinNoiseShader.h"
 
 namespace skiagm {
 
 class PerlinNoiseGM : public GM {
 public:
     PerlinNoiseGM() {
         this->setBGColor(0xFF000000);
         fSize = SkISize::Make(80, 80);
     }
 
 protected:
     virtual SkString onShortName() {
         return SkString("perlinnoise");
     }
 
     virtual SkISize onISize() {
-        return make_isize(200, 400);
+        return make_isize(200, 500);
     }
 
     void drawClippedRect(SkCanvas* canvas, int x, int y, const SkPaint& paint) {
         canvas->save();
         canvas->clipRect(SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(y),
                          SkIntToScalar(fSize.width()), SkIntToScalar(fSize.height())));
         SkRect r = SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(y),
                                     SkIntToScalar(fSize.width()),
                                     SkIntToScalar(fSize.height()));
         canvas->drawRect(r, paint);
         canvas->restore();
     }
 
     void test(SkCanvas* canvas, int x, int y, SkPerlinNoiseShader::Type type,
               float baseFrequencyX, float baseFrequencyY, int numOctaves, float seed,
               bool stitchTiles) {
         SkShader* shader = (type == SkPerlinNoiseShader::kFractalNoise_Type) ?
             SkPerlinNoiseShader::CreateFractalNoise(baseFrequencyX, baseFrequencyY, numOctaves,
                                                    seed, stitchTiles ? &fSize : NULL) :
             SkPerlinNoiseShader::CreateTubulence(baseFrequencyX, baseFrequencyY, numOctaves,
                                                 seed, stitchTiles ? &fSize : NULL);
         SkPaint paint;
         paint.setShader(shader)->unref();
         drawClippedRect(canvas, x, y, paint);
     }
 
     virtual void onDraw(SkCanvas* canvas) {
         canvas->clear(0x00000000);
+        test(canvas,   0,   0, SkPerlinNoiseShader::kFractalNoise_Type,
+             0.1f, 0.1f, 0, 0, false);
+        test(canvas, 100,   0, SkPerlinNoiseShader::kTurbulence_Type,
+             0.1f, 0.1f, 0, 0, false);
 
-        test(canvas,   0, 0, SkPerlinNoiseShader::kFractalNoise_Type,
+        test(canvas,   0, 100, SkPerlinNoiseShader::kFractalNoise_Type,
              0.1f, 0.1f, 2, 0, false);
-        test(canvas, 100, 0, SkPerlinNoiseShader::kFractalNoise_Type,
+        test(canvas, 100, 100, SkPerlinNoiseShader::kFractalNoise_Type,
              0.2f, 0.4f, 5, 0, true);
 
-        test(canvas,   0, 100, SkPerlinNoiseShader::kTurbulence_Type,
+        test(canvas,   0, 200, SkPerlinNoiseShader::kTurbulence_Type,
              0.1f, 0.1f, 2, 0, true);
-        test(canvas, 100, 100, SkPerlinNoiseShader::kTurbulence_Type,
+        test(canvas, 100, 200, SkPerlinNoiseShader::kTurbulence_Type,
              0.2f, 0.4f, 5, 0, false);
 
-        test(canvas,   0, 200, SkPerlinNoiseShader::kFractalNoise_Type,
+        test(canvas,   0, 300, SkPerlinNoiseShader::kFractalNoise_Type,
              0.1f, 0.1f, 3, 1, false);
-        test(canvas, 100, 200, SkPerlinNoiseShader::kFractalNoise_Type,
+        test(canvas, 100, 300, SkPerlinNoiseShader::kFractalNoise_Type,
              0.1f, 0.1f, 3, 4, false);
 
         canvas->scale(SkFloatToScalar(0.75f), SkFloatToScalar(1.0f));
 
-        test(canvas,   0, 300, SkPerlinNoiseShader::kFractalNoise_Type,
+        test(canvas,   0, 400, SkPerlinNoiseShader::kFractalNoise_Type,
              0.1f, 0.1f, 2, 0, false);
-        test(canvas, 100, 300, SkPerlinNoiseShader::kFractalNoise_Type,
+        test(canvas, 100, 400, SkPerlinNoiseShader::kFractalNoise_Type,
              0.2f, 0.4f, 5, 0, true);
     }
 
 private:
     typedef GM INHERITED;
     SkISize fSize;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new PerlinNoiseGM; }
 static GMRegistry reg(MyFactory);
 
 }