diff options
Diffstat (limited to 'src/gallium/drivers/r600/r600_state.c')
| -rw-r--r-- | src/gallium/drivers/r600/r600_state.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c index 532285024f1..3f359fb0dd7 100644 --- a/src/gallium/drivers/r600/r600_state.c +++ b/src/gallium/drivers/r600/r600_state.c @@ -1966,6 +1966,13 @@ static void r600_emit_db_misc_state(struct r600_context *rctx, struct r600_atom if (rctx->db_state.rsurf && rctx->db_state.rsurf->htile_enabled) { /* FORCE_OFF means HiZ/HiS are determined by DB_SHADER_CONTROL */ db_render_override |= S_028D10_FORCE_HIZ_ENABLE(V_028D10_FORCE_OFF); + /* This is to fix a lockup when hyperz and alpha test are enabled at + * the same time somehow GPU get confuse on which order to pick for + * z test + */ + if (rctx->alphatest_state.sx_alpha_test_control) { + db_render_override |= S_028D10_FORCE_SHADER_Z_ORDER(1); + } } else { db_render_override |= S_028D10_FORCE_HIZ_ENABLE(V_028D10_FORCE_DISABLE); } @@ -2774,7 +2781,7 @@ void r600_pipe_shader_ps(struct pipe_context *ctx, struct r600_pipe_shader *shad tmp); } - db_shader_control = S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z); + db_shader_control = 0; for (i = 0; i < rshader->noutput; i++) { if (rshader->output[i].name == TGSI_SEMANTIC_POSITION) z_export = 1; @@ -2969,6 +2976,19 @@ void r600_update_db_shader_control(struct r600_context * rctx) unsigned db_shader_control = rctx->ps_shader->current->db_shader_control | S_02880C_DUAL_EXPORT_ENABLE(dual_export); + /* When alpha test is enabled we can't trust the hw to make the proper + * decision on the order in which ztest should be run related to fragment + * shader execution. + * + * If alpha test is enabled perform z test after fragment. RE_Z (early + * z test but no write to the zbuffer) seems to cause lockup on r6xx/r7xx + */ + if (rctx->alphatest_state.sx_alpha_test_control) { + db_shader_control |= S_02880C_Z_ORDER(V_02880C_LATE_Z); + } else { + db_shader_control |= S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z); + } + if (db_shader_control != rctx->db_misc_state.db_shader_control) { rctx->db_misc_state.db_shader_control = db_shader_control; rctx->db_misc_state.atom.dirty = true; |