radeonsi: fix culling if clip & cull distances are used at the same time

Fixed piglits:
- arb_cull_distance/clip-cull-3
- arb_cull_distance/clip-cull-4

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index 3ca3553..4a41aa8 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -651,7 +651,8 @@ static void si_emit_clip_regs(struct si_context *sctx, struct r600_atom *atom)
        unsigned clipdist_mask =
                info->writes_clipvertex ? SIX_BITS : info->clipdist_writemask;
        unsigned ucp_mask = clipdist_mask ? 0 : rs->clip_plane_enable & SIX_BITS;
-       unsigned total_mask = clipdist_mask | (info->culldist_writemask << info->num_written_clipdistance);
+       unsigned culldist_mask = info->culldist_writemask << info->num_written_clipdistance;
+       unsigned total_mask = clipdist_mask | culldist_mask;
 
        radeon_set_context_reg(cs, R_02881C_PA_CL_VS_OUT_CNTL,
                S_02881C_USE_VTX_POINT_SIZE(info->writes_psize) |
@@ -666,7 +667,7 @@ static void si_emit_clip_regs(struct si_context *sctx, struct r600_atom *atom)
                                             info->writes_viewport_index) |
                S_02881C_VS_OUT_MISC_SIDE_BUS_ENA(1) |
                (rs->clip_plane_enable &
-                clipdist_mask) | (info->culldist_writemask << 8));
+                clipdist_mask) | (culldist_mask << 8));
        radeon_set_context_reg(cs, R_028810_PA_CL_CLIP_CNTL,
                rs->pa_cl_clip_cntl |
                ucp_mask |