Workaround for PowerVR clear issue.

src/gpu/gl/GrGLUtil.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 "GrGLUtil.h"
 #include "SkMatrix.h"
@@ skipping 173 matching lines @@
         if (0 == strcmp(vendorString, "Imagination Technologies")) {
             return kImagination_GrGLVendor;
         }
         if (0 == strncmp(vendorString, "Intel ", 6) || 0 == strcmp(vendorString, "Intel")) {
             return kIntel_GrGLVendor;
         }
         if (0 == strcmp(vendorString, "Qualcomm")) {
             return kQualcomm_GrGLVendor;
         }
         if (0 == strcmp(vendorString, "NVIDIA Corporation")) {
-                return kNVIDIA_GrGLVendor;
+            return kNVIDIA_GrGLVendor;
         }
     }
     return kOther_GrGLVendor;
 }
 
 GrGLRenderer GrGLGetRendererFromString(const char* rendererString) {
     if (rendererString) {
         if (0 == strcmp(rendererString, "NVIDIA Tegra 3")) {
             return kTegra3_GrGLRenderer;
         } else if (0 == strcmp(rendererString, "NVIDIA Tegra")) {
             return kTegra2_GrGLRenderer;
         }
+        int lastDigit;
+        int n = sscanf(rendererString, "PowerVR SGX 54%d", &lastDigit);
+        if (1 == n && lastDigit >= 0 && lastDigit <= 9) {
+            return kPowerVR54x_GrGLRenderer;
+        }
+        static const char kPowerVRRogueStr[] = "PowerVR Rogue";
+        if (0 == strncmp(rendererString, kPowerVRRogueStr,
+                         SK_ARRAY_COUNT(kPowerVRRogueStr)-1)) {

[tfarina, 2014/11/06 14:23:01]

can strlen() be used here?

[bsalomon, 2014/11/06 15:00:30]

It could

+            return kPowerVRRogue_GrGLRenderer;
+        }
     }
     return kOther_GrGLRenderer;
 }
 
 GrGLVersion GrGLGetVersion(const GrGLInterface* gl) {
     const GrGLubyte* v;
     GR_GL_CALL_RET(gl, v, GetString(GR_GL_VERSION));
     return GrGLGetVersionFromString((const char*) v);
 }
 
@@ skipping 75 matching lines @@
     GR_STATIC_ASSERT(2 == kGreater_StencilFunc);
     GR_STATIC_ASSERT(3 == kGEqual_StencilFunc);
     GR_STATIC_ASSERT(4 == kLess_StencilFunc);
     GR_STATIC_ASSERT(5 == kLEqual_StencilFunc);
     GR_STATIC_ASSERT(6 == kEqual_StencilFunc);
     GR_STATIC_ASSERT(7 == kNotEqual_StencilFunc);
     SkASSERT((unsigned) basicFunc < kBasicStencilFuncCount);
 
     return gTable[basicFunc];
 }