Enable NVPR with command buffer

src/gpu/gl/command_buffer/SkCommandBufferGLContext.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 "SkOnce.h"
 #include "gl/GrGLInterface.h"
 #include "gl/GrGLAssembleInterface.h"
 #include "gl/command_buffer/SkCommandBufferGLContext.h"
+#include "../ports/SkOSEnvironment.h"
 #include "../ports/SkOSLibrary.h"
 
 #if defined SK_BUILD_FOR_MAC
 
 // EGL doesn't exist on the mac, so expose what we need to get the command buffer's EGL running.
 typedef void *EGLDisplay;
 typedef unsigned int EGLBoolean;
 typedef void *EGLConfig;
 typedef void *EGLSurface;
 typedef void *EGLContext;
@@ skipping 160 matching lines @@
 }
 
 void SkCommandBufferGLContext::initializeGLContext(void* nativeWindow, const int* configAttribs,
                                                    const int* surfaceAttribs) {
     LoadCommandBufferOnce();
     if (!gfFunctionsLoadedSuccessfully) {
         SkDebugf("Command Buffer: Could not load EGL functions.\n");
         return;
     }
 
+    // Make sure CHROMIUM_path_rendering is enabled for NVPR support.
+    sk_setenv("CHROME_COMMAND_BUFFER_GLES2_ARGS", "--enable-gl-path-rendering");
     fDisplay = gfGetDisplay(EGL_DEFAULT_DISPLAY);
     if (EGL_NO_DISPLAY == fDisplay) {
         SkDebugf("Command Buffer: Could not create EGL display.\n");
         return;
     }
 
     EGLint majorVersion;
     EGLint minorVersion;
     if (!gfInitialize(fDisplay, &majorVersion, &minorVersion)) {
         SkDebugf("Command Buffer: Could not initialize EGL display.\n");
@@ skipping 125 matching lines @@
     EGLint result = 0;
     gfGetConfigAttrib(fDisplay, static_cast<EGLConfig>(fConfig), EGL_STENCIL_SIZE, &result);
     return result;
 }
 
 int SkCommandBufferGLContext::getSampleCount() {
     EGLint result = 0;
     gfGetConfigAttrib(fDisplay, static_cast<EGLConfig>(fConfig), EGL_SAMPLES, &result);
     return result;
 }