Fix Ganesh analytic blurred rect draws

This CL does two things:
 It fixes the SkBlurMaskFilterImpl::directFilterRRectMaskGPU draw path to explicitly handle rects
 It fixes the SkGpuDevice::drawTextureProducerImpl draw path to provide the correct (src & device space) inputs to directFilterRRectMaskGPU.

How this was working before was that GrRRectBlurEffect::Make would reject rect-rrects and the code would fallback to
GrBlurUtils::drawPathWithMaskFilter which mapped the rect-rrect into device space correctly (of course,
the rect-ness of the path was removed at that point so it was going through the slow path).

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2268583002

Review-Url: https://codereview.chromium.org/2268583002

1 files changed, 16 insertions, 10 deletions

diff --git a/src/gpu/SkGpuDevice_drawTexture.cpp b/src/gpu/SkGpuDevice_drawTexture.cpp
index c387574719..46a3699bb0 100644
--- a/src/gpu/SkGpuDevice_drawTexture.cpp
+++ b/src/gpu/SkGpuDevice_drawTexture.cpp
@@ -225,17 +225,23 @@ void SkGpuDevice::drawTextureProducerImpl(GrTextureProducer* producer,
     }
 
     // First see if we can do the draw + mask filter direct to the dst.
-    SkStrokeRec rec(SkStrokeRec::kFill_InitStyle);
-    if (mf->directFilterRRectMaskGPU(fContext,
-                                      fDrawContext.get(),
-                                      &grPaint,
-                                      clip,
-                                      viewMatrix,
-                                      rec,
-                                      SkRRect::MakeRect(clippedSrcRect),
-                                      SkRRect::MakeRect(clippedDstRect))) {
-        return;
+    if (viewMatrix.isScaleTranslate()) {
+        SkRect devClippedDstRect;
+        viewMatrix.mapRectScaleTranslate(&devClippedDstRect, clippedDstRect);
+
+        SkStrokeRec rec(SkStrokeRec::kFill_InitStyle);
+        if (mf->directFilterRRectMaskGPU(fContext,
+                                          fDrawContext.get(),
+                                          &grPaint,
+                                          clip,
+                                          viewMatrix,
+                                          rec,
+                                          SkRRect::MakeRect(clippedDstRect),
+                                          SkRRect::MakeRect(devClippedDstRect))) {
+            return;
+        }
     }
+
     SkPath rectPath;
     rectPath.addRect(clippedDstRect);
     rectPath.setIsVolatile(true);