1 files changed, 75 insertions, 0 deletions
diff --git a/gm/nocolorbleed.cpp b/gm/nocolorbleed.cpp
new file mode 100755
index 0000000..3dec7cc
--- /dev/null
+++ b/gm/nocolorbleed.cpp
@@ -0,0 +1,75 @@
+#include "gm.h"
+
+namespace skiagm {
+
+class NoColorBleedGM : public GM {
+public:
+    NoColorBleedGM() {}
+
+protected:
+    virtual SkString onShortName() {
+        return SkString("nocolorbleed");
+    }
+
+    virtual SkISize onISize() {
+        return make_isize(200, 200);
+    }
+
+    void drawBG(SkCanvas* canvas) {
+        canvas->drawColor(0xFFDDDDDD);
+    }
+
+    virtual void onDraw(SkCanvas* canvas) {
+        drawBG(canvas);
+
+        SkBitmap sprite;
+        sprite.setConfig(SkBitmap::kARGB_8888_Config, 4, 4, 4*sizeof(SkColor));
+        const SkColor spriteData[16] = {
+            SK_ColorBLACK,  SK_ColorCYAN,    SK_ColorMAGENTA, SK_ColorYELLOW,
+            SK_ColorBLACK,  SK_ColorWHITE,   SK_ColorBLACK,   SK_ColorRED,
+            SK_ColorGREEN,  SK_ColorBLACK,   SK_ColorWHITE,   SK_ColorBLUE,
+            SK_ColorYELLOW, SK_ColorMAGENTA, SK_ColorCYAN,    SK_ColorBLACK
+        };
+        sprite.allocPixels();
+        sprite.lockPixels();
+        SkPMColor* addr = sprite.getAddr32(0, 0);
+        for (size_t i = 0; i < SK_ARRAY_COUNT(spriteData); ++i) {
+            addr[i] = SkPreMultiplyColor(spriteData[i]);
+        }
+        sprite.unlockPixels();
+
+        // We draw a magnified subrect of the sprite
+        // sample interpolation may cause color bleeding around edges
+        // the subrect is a pure white area
+        SkIRect srcRect;
+        SkRect dstRect;
+        SkPaint paint;
+        paint.setFilterBitmap(true);
+        //First row : full texture with and without filtering
+        srcRect.setXYWH(0, 0, 4, 4);
+        dstRect.setXYWH(SkIntToScalar(0), SkIntToScalar(0)
+                        , SkIntToScalar(100), SkIntToScalar(100));
+        canvas->drawBitmapRect(sprite, &srcRect, dstRect, &paint);
+        dstRect.setXYWH(SkIntToScalar(100), SkIntToScalar(0)
+                        , SkIntToScalar(100), SkIntToScalar(100));
+        canvas->drawBitmapRect(sprite, &srcRect, dstRect);
+        //Second row : sub rect of texture with and without filtering
+        srcRect.setXYWH(1, 1, 2, 2);
+        dstRect.setXYWH(SkIntToScalar(25), SkIntToScalar(125)
+                        , SkIntToScalar(50), SkIntToScalar(50));
+        canvas->drawBitmapRect(sprite, &srcRect, dstRect, &paint);
+        dstRect.setXYWH(SkIntToScalar(125), SkIntToScalar(125)
+                        , SkIntToScalar(50), SkIntToScalar(50));
+        canvas->drawBitmapRect(sprite, &srcRect, dstRect);
+    }
+
+private:
+    typedef GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static GM* MyFactory(void*) { return new NoColorBleedGM; }
+static GMRegistry reg(MyFactory);
+
+}