commit d8eb7b6b12d5b155214031d4aa4d8f582ebb91a1
author Brian Salomon <bsalomon@google.com> Fri May 25 10:08:05 2018 -0400
committer Stephen White <senorblanco@chromium.org> Sat May 26 18:36:12 2018 +0000
tree 0c5de84e88769d346345910a1eb4bea5bd3fba36
parent 16b1eab9bab992785a9c8dd780b42e6ed76a5dc0

Reland "Turn off domain in GrTextureOp when src rect contains entire proxy"

This is a reland of 869433fa113d1573d5d91fcafdca413b247ce1b0

Original change's description:
> Turn off domain in GrTextureOp when src rect contains entire proxy
> 
> Move check for turning off domain when nearest/no-aa to GrRenderTargetContext.
> 
> Change-Id: I3c071b5f73fb3134218453204f30c3020c9dad9a
> Reviewed-on: https://skia-review.googlesource.com/130143
> Reviewed-by: Robert Phillips <robertphillips@google.com>
> Commit-Queue: Brian Salomon <bsalomon@google.com>

Change-Id: I29a21e26de8a246a74bd40fd0cda044f8f18327e
Reviewed-on: https://skia-review.googlesource.com/130307
Reviewed-by: Stephen White <senorblanco@chromium.org>

src/gpu/GrRenderTargetContext.cpp

diff --git a/src/gpu/GrRenderTargetContext.cpp b/src/gpu/GrRenderTargetContext.cpp
index f4db697..456d8e4 100644
--- a/src/gpu/GrRenderTargetContext.cpp
+++ b/src/gpu/GrRenderTargetContext.cpp
@@ -776,13 +776,22 @@
     if (filter != GrSamplerState::Filter::kNearest && !must_filter(srcRect, dstRect, viewMatrix)) {
         filter = GrSamplerState::Filter::kNearest;
     }
+    GrAAType aaType = this->chooseAAType(aa, GrAllowMixedSamples::kNo);
+    if (constraint == SkCanvas::kStrict_SrcRectConstraint) {
+        // No need to use a texture domain with nearest filtering unless there is AA bloating.
+        // Also, no need if the srcRect contains the entire texture.
+        if (filter == GrSamplerState::Filter::kNearest && aaType != GrAAType::kCoverage) {
+            constraint = SkCanvas::kFast_SrcRectConstraint;
+        } else if (srcRect.contains(proxy->getWorstCaseBoundsRect())) {
+            constraint = SkCanvas::kFast_SrcRectConstraint;
+        }
+    }
     SkRect clippedDstRect = dstRect;
     SkRect clippedSrcRect = srcRect;
     if (!crop_filled_rect(this->width(), this->height(), clip, viewMatrix, &clippedDstRect,
                           &clippedSrcRect)) {
         return;
     }
-    GrAAType aaType = this->chooseAAType(aa, GrAllowMixedSamples::kNo);
     bool allowSRGB = SkToBool(this->colorSpaceInfo().colorSpace());
     this->addDrawOp(clip, GrTextureOp::Make(std::move(proxy), filter, color, clippedSrcRect,
                                             clippedDstRect, aaType, constraint, viewMatrix,