HACK/i965/surface_formats: Mark A4B4G4R4 as being supported

The table has this marked as unsupported on all gens, but I don't really
believe that given how early it is in the table.  I've tested and it seems
to work on Broadwell.  The Bspec says that it sould be renderable on SKL+
but alpha blending is questionable.

Side note: We really need to audit the format table again.

diff --git a/src/mesa/drivers/dri/i965/brw_surface_formats.c b/src/mesa/drivers/dri/i965/brw_surface_formats.c
index 56813bf..7c16b84 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_surface_formats.c
+++ b/src/mesa/drivers/dri/i965/brw_surface_formats.c
@@ -205,7 +205,7 @@ const struct brw_surface_format_info surface_formats[] = {
    SF(50, 50,  x,  x,  x,  x,  x,  x,  x,    x,   P8A8_UNORM_PALETTE0)
    SF(50, 50,  x,  x,  x,  x,  x,  x,  x,    x,   P8A8_UNORM_PALETTE1)
    SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   A1B5G5R5_UNORM)
-   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   A4B4G4R4_UNORM)
+   SF( Y,  Y,  x,  Y, 90,  x,  x,  x,  x,    x,   A4B4G4R4_UNORM)
    SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   L8A8_UINT)
    SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   L8A8_SINT)
    SF( Y,  Y,  x, 45,  Y,  Y,  Y,  x,  x,    x,   R8_UNORM)