1 files changed, 110 insertions, 0 deletions
diff --git a/chromium/third_party/skia/samplecode/SampleTextureDomain.cpp b/chromium/third_party/skia/samplecode/SampleTextureDomain.cpp
new file mode 100644
index 00000000000..926c5596b09
--- /dev/null
+++ b/chromium/third_party/skia/samplecode/SampleTextureDomain.cpp
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SampleCode.h"
+#include "SkBlurMask.h"
+#include "SkBlurMaskFilter.h"
+#include "SkCanvas.h"
+#include "SkSurface.h"
+
+static SkBitmap make_bitmap() {
+    SkBitmap bm;
+    bm.allocN32Pixels(5, 5);
+
+    for (int y = 0; y < bm.height(); y++) {
+        uint32_t* p = bm.getAddr32(0, y);
+        for (int x = 0; x < bm.width(); x++) {
+            p[x] = ((x + y) & 1) ? SK_ColorWHITE : SK_ColorBLACK;
+        }
+    }
+    bm.unlockPixels();
+    return bm;
+}
+
+class TextureDomainView : public SampleView {
+    SkBitmap    fBM;
+
+public:
+    TextureDomainView(){
+        fBM = make_bitmap();
+    }
+
+protected:
+    // overrides from SkEventSink
+    virtual bool onQuery(SkEvent* evt) {
+        if (SampleCode::TitleQ(*evt)) {
+            SampleCode::TitleR(evt, "Texture Domain");
+            return true;
+        }
+        return this->INHERITED::onQuery(evt);
+    }
+
+    virtual void onDrawContent(SkCanvas* canvas) {
+        SkRect srcRect;
+        SkRect dstRect;
+        SkPaint paint;
+        paint.setFilterLevel(SkPaint::kLow_FilterLevel);
+
+        // Test that bitmap draws from malloc-backed bitmaps respect
+        // the constrained texture domain.
+        srcRect.setXYWH(1, 1, 3, 3);
+        dstRect.setXYWH(5, 5, 305, 305);
+        canvas->drawBitmapRectToRect(fBM, &srcRect, dstRect, &paint);
+
+        // Test that bitmap draws across separate devices also respect
+        // the constrainted texture domain.
+        // Note:  GPU-backed bitmaps follow a different rendering path
+        // when copying from one GPU device to another.
+        SkImageInfo info = SkImageInfo::MakeN32(5, 5, kOpaque_SkAlphaType);
+        SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
+
+        srcRect.setXYWH(1, 1, 3, 3);
+        dstRect.setXYWH(1, 1, 3, 3);
+        surface->getCanvas()->drawBitmapRectToRect(fBM, &srcRect, dstRect,
+                                                   &paint);
+
+        SkAutoTUnref<SkImage> image(surface->newImageSnapshot());
+
+        srcRect.setXYWH(1, 1, 3, 3);
+        dstRect.setXYWH(405, 5, 305, 305);
+        image->draw(canvas, &srcRect, dstRect, &paint);
+
+        // Test that bitmap blurring using a subrect
+        // renders correctly
+        srcRect.setXYWH(1, 1, 3, 3);
+        dstRect.setXYWH(5, 405, 305, 305);
+        SkMaskFilter* mf = SkBlurMaskFilter::Create(
+            kNormal_SkBlurStyle,
+            SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
+            SkBlurMaskFilter::kHighQuality_BlurFlag |
+            SkBlurMaskFilter::kIgnoreTransform_BlurFlag);
+        paint.setMaskFilter(mf)->unref();
+        image->draw(canvas, &srcRect, dstRect, &paint);
+
+        // Blur and a rotation + NULL src rect
+        // This should not trigger the texture domain code
+        // but it will test a code path in SkGpuDevice::drawBitmap
+        // that handles blurs with rects transformed to non-
+        // orthogonal rects. It also tests the NULL src rect handling
+        mf = SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
+                                      SkBlurMask::ConvertRadiusToSigma(5),
+                                      SkBlurMaskFilter::kHighQuality_BlurFlag);
+        paint.setMaskFilter(mf)->unref();
+
+        dstRect.setXYWH(-150, -150, 300, 300);
+        canvas->translate(550, 550);
+        canvas->rotate(45);
+        canvas->drawBitmapRectToRect(fBM, NULL, dstRect, &paint);
+    }
+private:
+    typedef SkView INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static SkView* MyFactory() { return new TextureDomainView; }
+static SkViewRegister reg(MyFactory);