1 files changed, 14 insertions, 1 deletions
diff --git a/src/mesa/main/hint.c b/src/mesa/main/hint.c
index 23ab1e6d0e6..6680edd1655 100644
--- a/src/mesa/main/hint.c
+++ b/src/mesa/main/hint.c
@@ -109,6 +109,18 @@ _mesa_Hint( GLenum target, GLenum mode )
             return;
 	 FLUSH_VERTICES(ctx, _NEW_HINT);
 	 ctx->Hint.GenerateMipmap = mode;
+         break;
+
+      /* GL_ARB_fragment_shader */
+      case GL_FRAGMENT_SHADER_DERIVATIVE_HINT_ARB:
+         if (!ctx->Extensions.ARB_fragment_shader) {
+            _mesa_error(ctx, GL_INVALID_ENUM, "glHint(target)");
+            return;
+         }
+         if (ctx->Hint.FragmentShaderDerivative == mode)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_HINT);
+         ctx->Hint.FragmentShaderDerivative = mode;
          break;
 
       default:
@@ -136,5 +148,6 @@ void _mesa_init_hint( GLcontext * ctx )
    ctx->Hint.Fog = GL_DONT_CARE;
    ctx->Hint.ClipVolumeClipping = GL_DONT_CARE;
    ctx->Hint.TextureCompression = GL_DONT_CARE;
-   ctx->Hint.GenerateMipmap = GL_DONT_CARE;
+   ctx->Hint.GenerateMipmap = GL_DONT_CARE;
+   ctx->Hint.FragmentShaderDerivative = GL_DONT_CARE;
 }