fix for blur large glyphs problems

src/gpu/GrAtlasTextContext.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "GrAtlasTextContext.h"
 
 #include "GrBatch.h"
 #include "GrBatchFontCache.h"
@@ skipping 2129 matching lines @@
                                                               subRun, color, transX, transY,
                                                               skPaint));
         target->drawBatch(pipelineBuilder, batch);
     }
 }
 
 inline void GrAtlasTextContext::flushBigGlyphs(BitmapTextBlob* cacheBlob, GrRenderTarget* rt,
                                                const SkPaint& skPaint,
                                                SkScalar transX, SkScalar transY,
                                                const SkIRect& clipBounds) {
+    if (!cacheBlob->fBigGlyphs.count()) {
+        return;
+    }
+
+    SkMatrix pathMatrix;
+    if (!cacheBlob->fViewMatrix.invert(&pathMatrix)) {
+        SkDebugf("could not invert viewmatrix\n");
+        return;
+    }
+
     for (int i = 0; i < cacheBlob->fBigGlyphs.count(); i++) {
         BitmapTextBlob::BigGlyph& bigGlyph = cacheBlob->fBigGlyphs[i];
         bigGlyph.fVx += transX;
         bigGlyph.fVy += transY;
-        SkMatrix translate;
-        translate.setTranslate(bigGlyph.fVx, bigGlyph.fVy);
-        fGpuDevice->internalDrawPath(bigGlyph.fPath, skPaint, SkMatrix::I(), &translate, clipBounds,
+        SkMatrix translate = cacheBlob->fViewMatrix;
+        translate.postTranslate(bigGlyph.fVx, bigGlyph.fVy);
+
+        fGpuDevice->internalDrawPath(bigGlyph.fPath, skPaint, translate, &pathMatrix, clipBounds,
                                      false);
     }
 }
 
 void GrAtlasTextContext::flush(GrDrawTarget* target,
                                const SkTextBlob* blob,
                                BitmapTextBlob* cacheBlob,
                                GrRenderTarget* rt,
                                const SkPaint& skPaint,
                                const GrPaint& grPaint,
@@ skipping 101 matching lines @@
             gTextContext->createDrawTextBlob(rt, clip, grPaint, skPaint, viewMatrix, text,
                                              static_cast<size_t>(textLen), 0, 0, noClip));
 
     SkScalar transX = static_cast<SkScalar>(random->nextU());
     SkScalar transY = static_cast<SkScalar>(random->nextU());
     const GrAtlasTextContext::BitmapTextBlob::Run::SubRunInfo& info = blob->fRuns[0].fSubRunInfo[0];
     return gTextContext->createBatch(blob, info, textLen, 0, 0, color, transX, transY, skPaint);
 }
 
 #endif