Added Z scale when X and Y scale to spot lights and point lights

gm/imagefiltersscaled.cpp

 /*
  * Copyright 2014 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 "SkColor.h"
 #include "SkBitmapSource.h"
 #include "SkBlurImageFilter.h"
 #include "SkDisplacementMapEffect.h"
 #include "SkDropShadowImageFilter.h"
 #include "SkGradientShader.h"
+#include "SkLightingImageFilter.h"
 #include "SkMorphologyImageFilter.h"
 #include "SkOffsetImageFilter.h"
 #include "SkPerlinNoiseShader.h"
 #include "SkRectShaderImageFilter.h"
 #include "SkResizeImageFilter.h"
 #include "SkScalar.h"
 
 #define RESIZE_FACTOR SkIntToScalar(4)
 
 namespace skiagm {
 
 class ImageFiltersScaledGM : public GM {
 public:
     ImageFiltersScaledGM() : fInitialized(false) {
         this->setBGColor(0x00000000);
     }
 
 protected:
     virtual SkString onShortName() {
         return SkString("imagefiltersscaled");
     }
 
     virtual SkISize onISize() {
-        return make_isize(1140, 500);
+        return make_isize(1428, 500);
     }
 
     void make_checkerboard() {
         fCheckerboard.allocN32Pixels(64, 64);
         SkCanvas canvas(fCheckerboard);
         canvas.clear(0x00000000);
         SkPaint darkPaint;
         darkPaint.setColor(0xFF404040);
         SkPaint lightPaint;
         lightPaint.setColor(0xFFA0A0A0);
@@ skipping 35 matching lines @@
             this->make_gradient_circle(64, 64);
             fInitialized = true;
         }
         canvas->clear(0x00000000);
 
         SkAutoTUnref<SkImageFilter> gradient(SkBitmapSource::Create(fGradientCircle));
         SkAutoTUnref<SkImageFilter> checkerboard(SkBitmapSource::Create(fCheckerboard));
         SkAutoTUnref<SkShader> noise(SkPerlinNoiseShader::CreateFractalNoise(
             SkDoubleToScalar(0.1), SkDoubleToScalar(0.05), 1, 0));
 
+        SkPoint3 pointLocation(0, 0, SkIntToScalar(10));
+        SkPoint3 spotLocation(SkIntToScalar(-10), SkIntToScalar(-10), SkIntToScalar(20));
+        SkPoint3 spotTarget(SkIntToScalar(40), SkIntToScalar(40), 0);
+        SkScalar spotExponent = SK_Scalar1;
+        SkScalar cutoffAngle = SkIntToScalar(15);
+        SkScalar kd = SkIntToScalar(2);
+        SkScalar surfaceScale = SkIntToScalar(1);
+        SkColor white(0xFFFFFFFF);
+
         SkImageFilter* filters[] = {
             SkBlurImageFilter::Create(SkIntToScalar(4), SkIntToScalar(4)),
             SkDropShadowImageFilter::Create(SkIntToScalar(5), SkIntToScalar(10), SkIntToScalar(3),
                                             SK_ColorYELLOW),
             SkDisplacementMapEffect::Create(SkDisplacementMapEffect::kR_ChannelSelectorType,
                                             SkDisplacementMapEffect::kR_ChannelSelectorType,
                                             SkIntToScalar(12),
                                             gradient.get(),
                                             checkerboard.get()),
             SkDilateImageFilter::Create(1, 1, checkerboard.get()),
             SkErodeImageFilter::Create(1, 1, checkerboard.get()),
             SkOffsetImageFilter::Create(SkIntToScalar(32), 0),
             SkResizeImageFilter::Create(RESIZE_FACTOR, RESIZE_FACTOR, SkPaint::kNone_FilterLevel),
             SkRectShaderImageFilter::Create(noise),
+            SkLightingImageFilter::CreatePointLitDiffuse(pointLocation, white, surfaceScale, kd),
+            SkLightingImageFilter::CreateSpotLitDiffuse(spotLocation, spotTarget, spotExponent,
+                                                        cutoffAngle, white, surfaceScale, kd),
         };
 
         SkVector scales[] = {
             SkVector::Make(SkScalarInvert(2), SkScalarInvert(2)),
             SkVector::Make(SkIntToScalar(1), SkIntToScalar(1)),
             SkVector::Make(SkIntToScalar(1), SkIntToScalar(2)),
             SkVector::Make(SkIntToScalar(2), SkIntToScalar(1)),
             SkVector::Make(SkIntToScalar(2), SkIntToScalar(2)),
         };
 
@@ skipping 37 matching lines @@
     SkBitmap fGradientCircle;
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new ImageFiltersScaledGM; }
 static GMRegistry reg(MyFactory);
 
 }