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

src/gpu/gl/GrGLCaps.cpp

Index: src/gpu/gl/GrGLCaps.cpp
diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index 6dc5ee8c4f76ee0f114b4800fc2e5bfb7abfa5f4..a597c2205a27d95d246d020008c03164e89a9256 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -456,6 +456,11 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
         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;