radeonsi: Pixel shaders pre-load one more SGPR

Acked-by: Marek Olšák <maraeo@gmail.com>

diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c
index c6ef8bd29ac6cde4f353497cee47d770561a06ad..47e64d8634e6caa002c786b6c526e1349749a8c0 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state_draw.c
+++ b/src/gallium/drivers/radeonsi/si_state_draw.c
@@ -236,9 +236,10 @@ static void si_pipe_shader_ps(struct pipe_context *ctx, struct si_pipe_shader *s
 
        num_user_sgprs = SI_PS_NUM_USER_SGPR;
        num_sgprs = shader->num_sgprs;
-       if (num_user_sgprs > num_sgprs) {
+       /* One SGPR after user SGPRs is pre-loaded with {prim_mask, lds_offset} */
+       if ((num_user_sgprs + 1) > num_sgprs) {
                /* Last 2 reserved SGPRs are used for VCC */
-               num_sgprs = num_user_sgprs + 2;
+               num_sgprs = num_user_sgprs + 1 + 2;
        }
        assert(num_sgprs <= 104);