command_buffer: Implement path rendering functions for CHROMIUM_path_rendering

gpu/command_buffer/service/gpu_switches.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/gpu_switches.h"
 
 #include "base/macros.h"
 
 namespace switches {
 
@@ skipping 53 matching lines @@
     "enable-threaded-texture-mailboxes";
 
 // Include ANGLE's intermediate representation (AST) output in shader
 // compilation info logs.
 const char kGLShaderIntermOutput[] = "gl-shader-interm-output";
 
 // Emulate ESSL lowp and mediump float precisions by mutating the shaders to
 // round intermediate values in ANGLE.
 const char kEmulateShaderPrecision[] = "emulate-shader-precision";
 
+// Enables using path rendering implementation implemented currently
+// in NV_path_rendering OpenGL extension. Requires compatible hardware
+// and driver. This is used in GPU rasterization.
+const char kEnableGLPathRendering[] = "enable-gl-path-rendering";
+
 const char* kGpuSwitches[] = {
-  kCompileShaderAlwaysSucceeds,
-  kDisableGLErrorLimit,
-  kDisableGLSLTranslator,
-  kDisableGpuDriverBugWorkarounds,
-  kDisableShaderNameHashing,
-  kEnableGPUCommandLogging,
-  kEnableGPUDebugging,
-  kEnableGPUServiceLoggingGPU,
-  kDisableGpuProgramCache,
-  kEnforceGLMinimums,
-  kForceGpuMemAvailableMb,
-  kGpuDriverBugWorkarounds,
-  kGpuProgramCacheSizeKb,
-  kDisableGpuShaderDiskCache,
-  kEnableShareGroupAsyncTextureUpload,
-  kEnableSubscribeUniformExtension,
-  kGLShaderIntermOutput,
-  kEmulateShaderPrecision,
+    kCompileShaderAlwaysSucceeds,
+    kDisableGLErrorLimit,
+    kDisableGLSLTranslator,
+    kDisableGpuDriverBugWorkarounds,
+    kDisableShaderNameHashing,
+    kEnableGPUCommandLogging,
+    kEnableGPUDebugging,
+    kEnableGPUServiceLoggingGPU,
+    kDisableGpuProgramCache,
+    kEnforceGLMinimums,
+    kForceGpuMemAvailableMb,
+    kGpuDriverBugWorkarounds,
+    kGpuProgramCacheSizeKb,
+    kDisableGpuShaderDiskCache,
+    kEnableShareGroupAsyncTextureUpload,
+    kEnableSubscribeUniformExtension,
+    kGLShaderIntermOutput,
+    kEmulateShaderPrecision,
+    kEnableGLPathRendering,
 };
 
 const int kNumGpuSwitches = arraysize(kGpuSwitches);
 
 }  // namespace switches