diff options
Diffstat (limited to 'src/intel/isl/isl.h')
| -rw-r--r-- | src/intel/isl/isl.h | 74 |
1 files changed, 49 insertions, 25 deletions
diff --git a/src/intel/isl/isl.h b/src/intel/isl/isl.h index e3acb0ec280..fda24115101 100644 --- a/src/intel/isl/isl.h +++ b/src/intel/isl/isl.h @@ -661,31 +661,8 @@ enum isl_aux_usage { * * Drawing with or without aux enabled may implicitly cause the surface to * transition between these states. There are also four types of auxiliary - * compression operations which cause an explicit transition: - * - * 1) Fast Clear: This operation writes the magic "clear" value to the - * auxiliary surface. This operation will safely transition any slice - * of a surface from any state to the clear state so long as the entire - * slice is fast cleared at once. A fast clear that only covers part of - * a slice of a surface is called a partial fast clear. - * - * 2) Full Resolve: This operation combines the auxiliary surface data - * with the primary surface data and writes the result to the primary. - * For HiZ, the docs call this a depth resolve. For CCS, the hardware - * full resolve operation does both a full resolve and an ambiguate so - * it actually takes you all the way to the pass-through state. - * - * 3) Partial Resolve: This operation considers blocks which are in the - * "clear" state and writes the clear value directly into the primary or - * auxiliary surface. Once this operation completes, the surface is - * still compressed but no longer references the clear color. This - * operation is only available for CCS. - * - * 4) Ambiguate: This operation throws away the current auxiliary data and - * replaces it with the magic pass-through value. If an ambiguate - * operation is performed when the primary surface does not contain 100% - * of the data, data will be lost. This operation is only implemented - * in hardware for depth where it is called a HiZ resolve. + * compression operations which cause an explicit transition which are + * described by the isl_aux_op enum below. * * Not all operations are valid or useful in all states. The diagram below * contains a complete description of the states and all valid and useful @@ -787,6 +764,53 @@ enum isl_aux_state { ISL_AUX_STATE_AUX_INVALID, }; +/** + * Enum which describes explicit aux transition operations. + */ +enum isl_aux_op { + ISL_AUX_OP_NONE, + + /** Fast Clear + * + * This operation writes the magic "clear" value to the auxiliary surface. + * This operation will safely transition any slice of a surface from any + * state to the clear state so long as the entire slice is fast cleared at + * once. A fast clear that only covers part of a slice of a surface is + * called a partial fast clear. + */ + ISL_AUX_OP_FAST_CLEAR, + + /** Full Resolve + * + * This operation combines the auxiliary surface data with the primary + * surface data and writes the result to the primary. For HiZ, the docs + * call this a depth resolve. For CCS, the hardware full resolve operation + * does both a full resolve and an ambiguate so it actually takes you all + * the way to the pass-through state. + */ + ISL_AUX_OP_FULL_RESOLVE, + + /** Partial Resolve + * + * This operation considers blocks which are in the "clear" state and + * writes the clear value directly into the primary or auxiliary surface. + * Once this operation completes, the surface is still compressed but no + * longer references the clear color. This operation is only available + * for CCS_E. + */ + ISL_AUX_OP_PARTIAL_RESOLVE, + + /** Ambiguate + * + * This operation throws away the current auxiliary data and replaces it + * with the magic pass-through value. If an ambiguate operation is + * performed when the primary surface does not contain 100% of the data, + * data will be lost. This operation is only implemented in hardware for + * depth where it is called a HiZ resolve. + */ + ISL_AUX_OP_AMBIGUATE, +}; + /* TODO(chadv): Explain */ enum isl_array_pitch_span { ISL_ARRAY_PITCH_SPAN_FULL, |