Bug 593867 - crash [@WebGLContext::ValidateProgram] in NVIDIA driver on Mac - r=vladimir

content/canvas/src/WebGLContextGL.cpp

@@ -3183,6 +3183,14 @@ WebGLContext::ValidateProgram(nsIWebGLProgram *pobj)
 
     MakeContextCurrent();
 
+#ifdef XP_MACOSX
+    if (gl->Vendor() == gl::GLContext::VendorNVIDIA) {
+        LogMessageIfVerbose("validateProgram: implemented as a no-operation "
+                            "on Mac/NVIDIA to work around a driver crash");
+        return NS_OK;
+    }
+#endif
+
     gl->fValidateProgram(progname);
 
     return NS_OK;