diff options
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c index 64db1d77319..4d76e13e527 100644 --- a/src/gallium/drivers/radeonsi/si_state.c +++ b/src/gallium/drivers/radeonsi/si_state.c @@ -5539,6 +5539,21 @@ static void si_init_config(struct si_context *sctx) S_00B01C_CU_EN(0xffff) | S_00B01C_WAVE_LIMIT(0x3F)); } + if (sctx->chip_class >= GFX10) { + /* Break up a pixel wave if it contains deallocs for more than + * half the parameter cache. + * + * To avoid a deadlock where pixel waves aren't launched + * because they're waiting for more pixels while the frontend + * is stuck waiting for PC space, the maximum allowed value is + * the size of the PC minus the largest possible allocation for + * a single primitive shader subgroup. + */ + si_pm4_set_reg(pm4, R_028C50_PA_SC_NGG_MODE_CNTL, + S_028C50_MAX_DEALLOCS_IN_WAVE(512)); + si_pm4_set_reg(pm4, R_028838_PA_CL_NGG_CNTL, 0); /* TODO edge flags? */ + } + if (sctx->chip_class >= GFX8) { unsigned vgt_tess_distribution; |