radeonsi: set PARTIAL_VS_WAVE(0) when appropriate

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c
index 2e999f6d186ef469d20e41f54ce3f24945ed3d81..f5d65508340bcf3920561063dbefec240df428bd 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state_draw.c
+++ b/src/gallium/drivers/radeonsi/si_state_draw.c
@@ -389,6 +389,7 @@ static unsigned si_get_ia_multi_vgt_param(struct si_context *sctx,
        /* SWITCH_ON_EOP(0) is always preferable. */
        bool wd_switch_on_eop = false;
        bool ia_switch_on_eop = false;
+       bool partial_vs_wave = false;
 
        /* This is a hardware requirement. */
        if ((rs && rs->line_stipple_enable) ||
@@ -397,6 +398,10 @@ static unsigned si_get_ia_multi_vgt_param(struct si_context *sctx,
                wd_switch_on_eop = true;
        }
 
+       if (sctx->b.streamout.streamout_enabled ||
+           sctx->b.streamout.prims_gen_query_enabled)
+               partial_vs_wave = true;
+
        if (sctx->b.chip_class >= CIK) {
                /* WD_SWITCH_ON_EOP has no effect on GPUs with less than
                 * 4 shader engines. Set 1 to pass the assertion below.
@@ -421,7 +426,7 @@ static unsigned si_get_ia_multi_vgt_param(struct si_context *sctx,
        }
 
        return S_028AA8_SWITCH_ON_EOP(ia_switch_on_eop) |
-               S_028AA8_PARTIAL_VS_WAVE_ON(1) |
+               S_028AA8_PARTIAL_VS_WAVE_ON(partial_vs_wave) |
                S_028AA8_PRIMGROUP_SIZE(primgroup_size - 1) |
                S_028AA8_WD_SWITCH_ON_EOP(sctx->b.chip_class >= CIK ? wd_switch_on_eop : 0);
 }