Add geometry-based rotated AA rect drawing path

src/gpu/GrContext.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 "GrContext.h"
@@ skipping 705 matching lines @@
     }
     const GrDrawState& drawState = target->getDrawState();
     if (drawState.getRenderTarget()->isMultisampled()) {
         return false;
     }
 
     if (0 == strokeWidth && target->willUseHWAALines()) {
         return false;
     }
 
-#ifdef SHADER_AA_FILL_RECT
+#if defined(SHADER_AA_FILL_RECT) || !defined(IGNORE_ROT_AA_RECT_OPT)
     if (strokeWidth >= 0) {
 #endif
         if (!drawState.getViewMatrix().preservesAxisAlignment()) {
             return false;
         }
 
         if (NULL != matrix && !matrix->preservesAxisAlignment()) {
             return false;
         }
-#ifdef SHADER_AA_FILL_RECT
+#if defined(SHADER_AA_FILL_RECT) || !defined(IGNORE_ROT_AA_RECT_OPT)
     } else {
         if (!drawState.getViewMatrix().preservesAxisAlignment() &&
             !drawState.getViewMatrix().preservesRightAngles()) {
             return false;
         }
 
         if (NULL != matrix && !matrix->preservesRightAngles()) {
             return false;
         }
     }
 #endif
 
     *combinedMatrix = drawState.getViewMatrix();
     if (NULL != matrix) {
         combinedMatrix->preConcat(*matrix);
 
 #if GR_DEBUG
-#ifdef SHADER_AA_FILL_RECT
+#if defined(SHADER_AA_FILL_RECT) || !defined(IGNORE_ROT_AA_RECT_OPT)
         if (strokeWidth >= 0) {
 #endif
             GrAssert(combinedMatrix->preservesAxisAlignment());
-#ifdef SHADER_AA_FILL_RECT
+#if defined(SHADER_AA_FILL_RECT) || !defined(IGNORE_ROT_AA_RECT_OPT)
         } else {
             GrAssert(combinedMatrix->preservesRightAngles());
         }
 #endif
 #endif
     }
 
     combinedMatrix->mapRect(devRect, rect);
 
-    if (strokeWidth < 0) {
+    if (strokeWidth < 0 
+#if defined(SHADER_AA_FILL_RECT) || !defined(IGNORE_ROT_AA_RECT_OPT)
+        && drawState.getViewMatrix().preservesAxisAlignment()
+#endif
+        ) {
         return !isIRect(*devRect);
     } else {
         return true;
     }
 }
 
 void GrContext::drawRect(const GrPaint& paint,
                          const GrRect& rect,
                          SkScalar width,
                          const SkMatrix* matrix) {
@@ skipping 1023 matching lines @@
         return srcTexture;
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 #if GR_CACHE_STATS
 void GrContext::printCacheStats() const {
     fTextureCache->printStats();
 }
 #endif