GPU implementation of drawRegion()

src/gpu/SkGpuDevice.cpp

 /*
  * 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 "SkGpuDevice.h"
 
 #include "GrBlurUtils.h"
@@ skipping 508 matching lines @@
 
     GrBlurUtils::drawPathWithMaskFilter(fContext, fDrawContext.get(),
                                         fClip, path, paint,
                                         *draw.fMatrix, nullptr,
                                         draw.fRC->getBounds(), true);
 }
 
 
 /////////////////////////////////////////////////////////////////////////////
 
+static inline bool is_int(float x) {
+    return x == (float) sk_float_round2int(x);
+}
+
+void SkGpuDevice::drawRegion(const SkDraw& draw, const SkRegion& region, const SkPaint& paint) {
+    bool isNonTranslate = draw.fMatrix->getType() & ~(SkMatrix::kTranslate_Mask);

[bsalomon, 2016/08/25 17:49:02]

I think we should handle all the matrix, aa, and style stuff in GrDrawContext.
I'd just handle the mask filter bail out here.

GrDrawContext::drawRegion(clip, grpaint, matrix, region, GrStyle(paint))

in GrDC GrStyle can be queried using GrStyle::isSimpleFill() which will return
true if it is fill w/ no path effect.

[msarett, 2016/08/25 20:51:42]

SGTM, done.

+    bool complexPaint = paint.getStyle() != SkPaint::kFill_Style || paint.getMaskFilter() ||
+                        paint.getPathEffect();
+    bool antiAlias = paint.isAntiAlias() && (!is_int(draw.fMatrix->getTranslateX()) ||
+                                             !is_int(draw.fMatrix->getTranslateY()));
+    if (isNonTranslate || complexPaint || antiAlias) {
+        SkPath path;
+        region.getBoundaryPath(&path);
+        return this->drawPath(draw, path, paint, nullptr, false);
+    }
+
+    GrPaint grPaint;
+    if (!SkPaintToGrPaint(this->context(), fDrawContext.get(), paint, *draw.fMatrix, &grPaint)) {
+        return;
+    }
+
+    fDrawContext->drawRegion(fClip, grPaint, *draw.fMatrix, region);
+}
+
 void SkGpuDevice::drawOval(const SkDraw& draw, const SkRect& oval, const SkPaint& paint) {
     ASSERT_SINGLE_OWNER
     GR_CREATE_TRACE_MARKER_CONTEXT("SkGpuDevice", "drawOval", fContext);
     CHECK_SHOULD_DRAW(draw);
 
     // Presumably the path effect warps this to something other than an oval
     if (paint.getPathEffect()) {
         SkPath path;
         path.setIsVolatile(true);
         path.addOval(oval);
@@ skipping 1268 matching lines @@
 }
 
 SkImageFilterCache* SkGpuDevice::getImageFilterCache() {
     ASSERT_SINGLE_OWNER
     // We always return a transient cache, so it is freed after each
     // filter traversal.
     return SkImageFilterCache::Create(kDefaultImageFilterCacheSize);
 }
 
 #endif