Revert "Turn NVPR on by default (but off in tools)."

include/gpu/gl/GrGLConfig.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 
@@ skipping 75 matching lines @@
  * function, and then checking that the error is still GL_NO_ERROR. When the
  * value is 0 we will assume no error was generated without checking.
  *
  * GR_GL_CHECK_FBO_STATUS_ONCE_PER_FORMAT: We will normally check the FBO status
  * every time we bind a texture or renderbuffer to an FBO. However, in some
  * environments CheckFrameBufferStatus is very expensive. If this is set we will
  * check the first time we use a color format or a combination of color /
  * stencil formats as attachments. If the FBO is complete we will assume
  * subsequent attachments with the same formats are complete as well.
  *
+ * GR_GL_USE_NV_PATH_RENDERING: Enable experimental support for
+ * GL_NV_path_rendering. There are known issues with clipping, non-AA paths, and
+ * perspective.
+ *
  * GR_GL_MUST_USE_VBO: Indicates that all vertices and indices must be rendered
  * from VBOs. Chromium's command buffer doesn't allow glVertexAttribArray with
  * ARARY_BUFFER 0 bound or glDrawElements with ELEMENT_ARRAY_BUFFER 0 bound.
  *
  * GR_GL_USE_NEW_SHADER_SOURCE_SIGNATURE is for compatibility with the new version
  * of the OpenGLES2.0 headers from Khronos.  glShaderSource now takes a const char * const *,
  * instead of a const char
  */
 
 #if !defined(GR_GL_LOG_CALLS)
@@ skipping 41 matching lines @@
 #endif
 
 #if !defined(GR_GL_CHECK_ALLOC_WITH_GET_ERROR)
     #define GR_GL_CHECK_ALLOC_WITH_GET_ERROR            1
 #endif
 
 #if !defined(GR_GL_CHECK_FBO_STATUS_ONCE_PER_FORMAT)
     #define GR_GL_CHECK_FBO_STATUS_ONCE_PER_FORMAT      0
 #endif
 
+#if !defined(GR_GL_USE_NV_PATH_RENDERING)
+    #define GR_GL_USE_NV_PATH_RENDERING                 0
+#endif
+
 #if !defined(GR_GL_MUST_USE_VBO)
     #define GR_GL_MUST_USE_VBO                          0
 #endif
 
 #if !defined(GR_GL_USE_NEW_SHADER_SOURCE_SIGNATURE)
     #define GR_GL_USE_NEW_SHADER_SOURCE_SIGNATURE       0
 #endif
 
 /**
  * There is a strange bug that occurs on Macs with NVIDIA GPUs. We don't
@@ skipping 18 matching lines @@
  * trick every 128 array buffer uploads.
  *
  * Hopefully we will understand this better and have a cleaner fix or get a
  * OS/driver level fix.
  */
 #define GR_GL_MAC_BUFFER_OBJECT_PERFOMANCE_WORKAROUND   \
     (defined(SK_BUILD_FOR_MAC) &&                       \
      !GR_GL_USE_BUFFER_DATA_NULL_HINT)
 
 #endif