radeonsi/gfx10: fix vertex color clamping for TES

Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c
index b6183a3..eddfdd6 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state_draw.c
+++ b/src/gallium/drivers/radeonsi/si_state_draw.c
@@ -630,22 +630,35 @@ static void si_emit_vs_state(struct si_context *sctx,
        if (sctx->current_vs_state != sctx->last_vs_state) {
                struct radeon_cmdbuf *cs = sctx->gfx_cs;
 
-               /* For the API vertex shader (VS_STATE_INDEXED). */
+               /* For the API vertex shader (VS_STATE_INDEXED, LS_OUT_*). */
                radeon_set_sh_reg(cs,
                        sctx->shader_pointers.sh_base[PIPE_SHADER_VERTEX] +
                        SI_SGPR_VS_STATE_BITS * 4,
                        sctx->current_vs_state);
 
-               /* For vertex color clamping, which is done in the last stage
-                * before the rasterizer. */
-               if (sctx->gs_shader.cso || sctx->tes_shader.cso) {
-                       /* GS copy shader or TES if GS is missing. */
+               /* Set CLAMP_VERTEX_COLOR and OUTPRIM in the last stage
+                * before the rasterizer.
+                *
+                * For TES or the GS copy shader without NGG:
+                */
+               if (sctx->shader_pointers.sh_base[PIPE_SHADER_VERTEX] !=
+                   R_00B130_SPI_SHADER_USER_DATA_VS_0) {
                        radeon_set_sh_reg(cs,
                                R_00B130_SPI_SHADER_USER_DATA_VS_0 +
                                SI_SGPR_VS_STATE_BITS * 4,
                                sctx->current_vs_state);
                }
 
+               /* For NGG: */
+               if (sctx->chip_class >= GFX10 &&
+                   sctx->shader_pointers.sh_base[PIPE_SHADER_VERTEX] !=
+                   R_00B230_SPI_SHADER_USER_DATA_GS_0) {
+                       radeon_set_sh_reg(cs,
+                                         R_00B230_SPI_SHADER_USER_DATA_GS_0 +
+                                         SI_SGPR_VS_STATE_BITS * 4,
+                                         sctx->current_vs_state);
+               }
+
                sctx->last_vs_state = sctx->current_vs_state;
        }
 }