glamor_render: Disable gradient shader conversion due to bug.

I found when enable the gradient shader, the firefox's tab's
background has incorrect rendering result.

Need furthr investigation, for now, just disable it.

Signed-off-by: Zhigang Gong <zhigang.gong@linux.intel.com>

glamor/glamor_priv.h

@@ -714,6 +714,7 @@ glamor_poly_line(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt,
 
 #define GLAMOR_PIXMAP_DYNAMIC_UPLOAD
 //#define GLAMOR_DELAYED_FILLING
+//#define GLAMOR_GRADIENT_SHADER
 
 
 

glamor/glamor_render.c

@@ -2743,7 +2743,7 @@ glamor_convert_gradient_picture(ScreenPtr screen,
 		format = PICT_a8r8g8b8;
 	else
 		format = source->format;
-
+#ifdef GLAMOR_GRADIENT_SHADER
 	if (!source->pDrawable) {
 		if (source->pSourcePict->type == SourcePictTypeLinear) {
 			dst = _glamor_generate_linear_gradient_picture(screen,
@@ -2762,7 +2762,7 @@ glamor_convert_gradient_picture(ScreenPtr screen,
 			return dst;
 		}
 	}
-
+#endif
 	pixmap = glamor_create_pixmap(screen,
 				      width,
 				      height,