-static enum isl_aux_op
-get_ccs_d_resolve_op(enum isl_aux_state aux_state,
- enum isl_aux_usage aux_usage,
- bool fast_clear_supported)
-{
- assert(aux_usage == ISL_AUX_USAGE_NONE || aux_usage == ISL_AUX_USAGE_CCS_D);
-
- const bool ccs_supported = aux_usage == ISL_AUX_USAGE_CCS_D;
-
- assert(ccs_supported == fast_clear_supported);
-
- switch (aux_state) {
- case ISL_AUX_STATE_CLEAR:
- case ISL_AUX_STATE_PARTIAL_CLEAR:
- if (!ccs_supported)
- return ISL_AUX_OP_FULL_RESOLVE;
- else
- return ISL_AUX_OP_NONE;
-
- case ISL_AUX_STATE_PASS_THROUGH:
- return ISL_AUX_OP_NONE;
-
- case ISL_AUX_STATE_RESOLVED:
- case ISL_AUX_STATE_AUX_INVALID:
- case ISL_AUX_STATE_COMPRESSED_CLEAR:
- case ISL_AUX_STATE_COMPRESSED_NO_CLEAR:
- break;
- }
-
- unreachable("Invalid aux state for CCS_D");
-}
-
-static enum isl_aux_op
-get_ccs_e_resolve_op(enum isl_aux_state aux_state,
- enum isl_aux_usage aux_usage,
- bool fast_clear_supported)
-{
- /* CCS_E surfaces can be accessed as CCS_D if we're careful. */
- assert(aux_usage == ISL_AUX_USAGE_NONE ||
- aux_usage == ISL_AUX_USAGE_CCS_D ||
- aux_usage == ISL_AUX_USAGE_CCS_E);
-
- if (aux_usage == ISL_AUX_USAGE_CCS_D)
- assert(fast_clear_supported);
-
- switch (aux_state) {
- case ISL_AUX_STATE_CLEAR:
- case ISL_AUX_STATE_PARTIAL_CLEAR:
- if (fast_clear_supported)
- return ISL_AUX_OP_NONE;
- else if (aux_usage == ISL_AUX_USAGE_CCS_E)
- return ISL_AUX_OP_PARTIAL_RESOLVE;
- else
- return ISL_AUX_OP_FULL_RESOLVE;
-
- case ISL_AUX_STATE_COMPRESSED_CLEAR:
- if (aux_usage != ISL_AUX_USAGE_CCS_E)
- return ISL_AUX_OP_FULL_RESOLVE;
- else if (!fast_clear_supported)
- return ISL_AUX_OP_PARTIAL_RESOLVE;
- else
- return ISL_AUX_OP_NONE;
-
- case ISL_AUX_STATE_COMPRESSED_NO_CLEAR:
- if (aux_usage != ISL_AUX_USAGE_CCS_E)
- return ISL_AUX_OP_FULL_RESOLVE;
- else
- return ISL_AUX_OP_NONE;
-
- case ISL_AUX_STATE_PASS_THROUGH:
- return ISL_AUX_OP_NONE;
-
- case ISL_AUX_STATE_RESOLVED:
- case ISL_AUX_STATE_AUX_INVALID:
- break;
- }
-
- unreachable("Invalid aux state for CCS_E");
-}
-
-static void
-intel_miptree_prepare_ccs_access(struct brw_context *brw,
- struct intel_mipmap_tree *mt,
- uint32_t level, uint32_t layer,
- enum isl_aux_usage aux_usage,
- bool fast_clear_supported)
-{
- enum isl_aux_state aux_state = intel_miptree_get_aux_state(mt, level, layer);
-
- enum isl_aux_op resolve_op;
- if (mt->aux_usage == ISL_AUX_USAGE_CCS_E) {
- resolve_op = get_ccs_e_resolve_op(aux_state, aux_usage,
- fast_clear_supported);
- } else {
- assert(mt->aux_usage == ISL_AUX_USAGE_CCS_D);
- resolve_op = get_ccs_d_resolve_op(aux_state, aux_usage,
- fast_clear_supported);
- }
-
- if (resolve_op != ISL_AUX_OP_NONE) {
- intel_miptree_check_color_resolve(brw, mt, level, layer);
- brw_blorp_resolve_color(brw, mt, level, layer, resolve_op);
-
- switch (resolve_op) {
- case ISL_AUX_OP_FULL_RESOLVE:
- /* The CCS full resolve operation destroys the CCS and sets it to the
- * pass-through state. (You can also think of this as being both a
- * resolve and an ambiguate in one operation.)
- */
- intel_miptree_set_aux_state(brw, mt, level, layer, 1,
- ISL_AUX_STATE_PASS_THROUGH);
- break;
-
- case ISL_AUX_OP_PARTIAL_RESOLVE:
- intel_miptree_set_aux_state(brw, mt, level, layer, 1,
- ISL_AUX_STATE_COMPRESSED_NO_CLEAR);
- break;
-
- default:
- unreachable("Invalid resolve op");
- }
- }
-}
-