Workaround for bug in Tegra 3 when uploading to a render target

src/gpu/gl/GrGLCaps.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLCaps.h"
 
@@ skipping 438 matching lines @@
     if (kPowerVR54x_GrGLRenderer == ctxInfo.renderer() ||
         kPowerVRRogue_GrGLRenderer == ctxInfo.renderer() ||
         kAdreno3xx_GrGLRenderer == ctxInfo.renderer()) {
         fUseDrawInsteadOfClear = true;
     }
 
     if (kAdreno4xx_GrGLRenderer == ctxInfo.renderer()) {
         fUseDrawInsteadOfPartialRenderTargetWrite = true;
     }
 
+    if (kTegra3_GrGLRenderer == ctxInfo.renderer()) {

[robertphillips, 2016/02/16 19:00:44]

// comment ?

[bsalomon, 2016/02/16 19:03:05]

Done.

+        fUseDrawInsteadOfPartialRenderTargetWrite = true;
+        fUseDrawInsteadOfAllRenderTargetWrites = true;
+    }
+
 #ifdef SK_BUILD_FOR_WIN
     // On ANGLE deferring flushes can lead to GPU starvation
     fPreferVRAMUseOverFlushes = !isANGLE;
 #endif
 
     if (kChromium_GrGLDriver == ctxInfo.driver()) {
         fMustClearUploadedBufferData = true;
     }
 
     if (kGL_GrGLStandard == standard) {
@@ skipping 1228 matching lines @@
         for (int j = 0; j < kExternalFormatUsageCnt; ++j) {
             SkASSERT(defaultEntry.fFormats.fExternalFormat[j] !=
                      fConfigTable[i].fFormats.fExternalFormat[j]);
         }
         SkASSERT(defaultEntry.fFormats.fExternalType != fConfigTable[i].fFormats.fExternalType);
     }
 #endif
 }
 
 void GrGLCaps::onApplyOptionsOverrides(const GrContextOptions& options) {}