freedreno/a3xx: fix blending of L8 format

Even though luminance formats don't have alpha, we still want the alpha
output to go to the blender. This fixes the luminance blending tests.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "11.0" <mesa-stable@lists.freedesktop.org>

diff --git a/src/gallium/drivers/freedreno/a3xx/fd3_format.c b/src/gallium/drivers/freedreno/a3xx/fd3_format.c
index 04cb9b98fb7def43d43e63e7e69b1bc480fec3d7..857d156c869c5576d6462e1cc8826fafdc1af88d 100644 (file)
--- a/src/gallium/drivers/freedreno/a3xx/fd3_format.c
+++ b/src/gallium/drivers/freedreno/a3xx/fd3_format.c
@@ -355,6 +355,8 @@ fd3_fs_output_format(enum pipe_format format)
        case PIPE_FORMAT_R16G16_FLOAT:
        case PIPE_FORMAT_R11G11B10_FLOAT:
                return RB_R16G16B16A16_FLOAT;
+       case PIPE_FORMAT_L8_UNORM:
+               return RB_R8G8B8A8_UNORM;
        default:
                return fd3_pipe2color(format);
        }