Some assert fixes for running the Fuzzer sample in GPU mode.

src/gpu/GrPathUtils.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 "GrPathUtils.h"
 
 #include "GrTypes.h"
@@ skipping 26 matching lines @@
 static const SkScalar gMinCurveTol = 0.0001f;
 
 uint32_t GrPathUtils::quadraticPointCount(const SkPoint points[],
                                           SkScalar tol) {
     if (tol < gMinCurveTol) {
         tol = gMinCurveTol;
     }
     SkASSERT(tol > 0);
 
     SkScalar d = points[1].distanceToLineSegmentBetween(points[0], points[2]);
-    if (d <= tol) {
+    if (!SkScalarIsFinite(d)) {
+        return MAX_POINTS_PER_CURVE;
+    } else if (d <= tol) {
         return 1;
     } else {
         // Each time we subdivide, d should be cut in 4. So we need to
         // subdivide x = log4(d/tol) times. x subdivisions creates 2^(x)
         // points.
         // 2^(log4(x)) = sqrt(x);
         SkScalar divSqrt = SkScalarSqrt(d / tol);
         if (((SkScalar)SK_MaxS32) <= divSqrt) {
             return MAX_POINTS_PER_CURVE;
         } else {
@@ skipping 39 matching lines @@
                                            SkScalar tol) {
     if (tol < gMinCurveTol) {
         tol = gMinCurveTol;
     }
     SkASSERT(tol > 0);
 
     SkScalar d = SkTMax(
         points[1].distanceToLineSegmentBetweenSqd(points[0], points[3]),
         points[2].distanceToLineSegmentBetweenSqd(points[0], points[3]));
     d = SkScalarSqrt(d);
-    if (d <= tol) {
+    if (!SkScalarIsFinite(d)) {
+        return MAX_POINTS_PER_CURVE;
+    } else if (d <= tol) {
         return 1;
     } else {
         SkScalar divSqrt = SkScalarSqrt(d / tol);
         if (((SkScalar)SK_MaxS32) <= divSqrt) {
             return MAX_POINTS_PER_CURVE;
         } else {
             int temp = SkScalarCeilToInt(SkScalarSqrt(d / tol));
             int pow2 = GrNextPow2(temp);
             // Because of NaNs & INFs we can wind up with a degenerate temp
             // such that pow2 comes out negative. Also, our point generator
@@ skipping 695 matching lines @@
         set_loop_klm(d, controlK, controlL, controlM);
     } else if (kCusp_SkCubicType == cType) {
         SkASSERT(0.f == d[0]);
         set_cusp_klm(d, controlK, controlL, controlM);
     } else if (kQuadratic_SkCubicType == cType) {
         set_quadratic_klm(d, controlK, controlL, controlM);
     }
 
     calc_cubic_klm(p, controlK, controlL, controlM, klm, &klm[3], &klm[6]);
 }