diff options
Diffstat (limited to 'src/intel')
| -rw-r--r-- | src/intel/isl/isl.h | 88 |
1 files changed, 53 insertions, 35 deletions
diff --git a/src/intel/isl/isl.h b/src/intel/isl/isl.h index fcf03b1a5b3..b9f9fb60d07 100644 --- a/src/intel/isl/isl.h +++ b/src/intel/isl/isl.h @@ -618,7 +618,11 @@ enum isl_aux_usage { * color by simply changing the clear color without modifying either * surface. * - * 2) Compressed w/ Clear: In this state, neither the auxiliary surface + * 2) Partial Clear: In this state, each block in the auxiliary surface + * contains either the magic clear or pass-through value. See Clear and + * Pass-through for more details. + * + * 3) Compressed w/ Clear: In this state, neither the auxiliary surface * nor the primary surface has a complete representation of the data. * Instead, both surfaces must be used together or else rendering * corruption may occur. Depending on the auxiliary compression format @@ -627,19 +631,19 @@ enum isl_aux_usage { * values. Blocks may also be in the clear state (see Clear) and have * their value taken from outside the surface. * - * 3) Compressed w/o Clear: This state is identical to the state above + * 4) Compressed w/o Clear: This state is identical to the state above * except that no blocks are in the clear state. In this state, all of * the data required to reconstruct the final sample values is contained * in the auxiliary and primary surface and the clear value is not * considered. * - * 4) Resolved: In this state, the primary surface contains 100% of the + * 5) Resolved: In this state, the primary surface contains 100% of the * data. The auxiliary surface is also valid so the surface can be * validly used with or without aux enabled. The auxiliary surface may, * however, contain non-trivial data and any update to the primary * surface with aux disabled will cause the two to get out of sync. * - * 5) Pass-through: In this state, the primary surface contains 100% of the + * 6) Pass-through: In this state, the primary surface contains 100% of the * data and every block in the auxiliary surface contains a magic value * which indicates that the auxiliary surface should be ignored and the * only the primary surface should be considered. Updating the primary @@ -648,7 +652,7 @@ enum isl_aux_usage { * cause the auxiliary buffer to contain non-trivial data and no longer * be in the pass-through state. * - * 5) Aux Invalid: In this state, the primary surface contains 100% of the + * 7) Aux Invalid: In this state, the primary surface contains 100% of the * data and the auxiliary surface is completely bogus. Any attempt to * use the auxiliary surface is liable to result in rendering * corruption. The only thing that one can do to re-enable aux once @@ -662,7 +666,8 @@ enum isl_aux_usage { * 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. + * 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. @@ -689,34 +694,46 @@ enum isl_aux_usage { * Draw w/ Aux * +----------+ * | | - * | +-------------+ Draw w/ Aux +-------------+ - * +------>| Compressed |<---------------------| Clear | - * | w/ Clear | | | - * +-------------+ +-------------+ - * | | | - * Partial | | | - * Resolve | | Full Resolve | - * | +----------------------------+ | Full - * | | | Resolve - * Draw w/ aux | | | - * +----------+ | | | - * | | \|/ \|/ \|/ - * | +-------------+ Full Resolve +-------------+ - * +------>| Compressed |--------------------->| Resolved | - * | w/o Clear |<---------------------| | - * +-------------+ Draw w/ Aux +-------------+ - * /|\ | | - * | Draw | | Draw - * | w/ Aux | | w/o Aux - * | Ambiguate | | - * | +----------------------------+ | - * Draw w/o Aux | | | Draw w/o Aux - * +----------+ | | | +----------+ - * | | | \|/ \|/ | | - * | +-------------+ Ambiguate +-------------+ | - * +------>| Pass- |<---------------------| Aux |<------+ - * | through | | Invalid | - * +-------------+ +-------------+ + * | +-------------+ Draw w/ Aux +-------------+ + * +------>| Compressed |<-------------------| Clear | + * | w/ Clear |----->----+ | | + * +-------------+ | +-------------+ + * | /|\ | | | + * | | | | | + * | | +------<-----+ | Draw w/ + * | | | | Clear Only + * | | Full | | +----------+ + * Partial | | Resolve | \|/ | | + * Resolve | | | +-------------+ | + * | | | | Partial |<------+ + * | | | | Clear |<----------+ + * | | | +-------------+ | + * | | | | | + * | | +------>---------+ Full | + * | | | Resolve | + * Draw w/ aux | | Partial Fast Clear | | + * +----------+ | +--------------------------+ | | + * | | \|/ | \|/ | + * | +-------------+ Full Resolve +-------------+ | + * +------>| Compressed |------------------->| Resolved | | + * | w/o Clear |<-------------------| | | + * +-------------+ Draw w/ Aux +-------------+ | + * /|\ | | | + * | Draw | | Draw | + * | w/ Aux | | w/o Aux | + * | Ambiguate | | | + * | +--------------------------+ | | + * Draw w/o Aux | | | Draw w/o Aux | + * +----------+ | | | +----------+ | + * | | | \|/ \|/ | | | + * | +-------------+ Ambiguate +-------------+ | | + * +------>| Pass- |<-------------------| Aux |<------+ | + * +------>| through | | Invalid | | + * | +-------------+ +-------------+ | + * | | | | + * +----------+ +-----------------------------------------------------+ + * Draw w/ Partial Fast Clear + * Clear Only * * * While the above general theory applies to all forms of auxiliary @@ -742,7 +759,7 @@ enum isl_aux_usage { * CCS_D: Single-sample fast-clears (also called CCS_D in ISL) are one of * the simplest forms of compression since they don't do anything * beyond clear color tracking. They really only support three of - * the six states: Clear, Compressed w/ Clear, and Pass-through. The + * the six states: Clear, Partial Clear, and Pass-through. The * only CCS_D operation is "Resolve" which maps to a full resolve * followed by an ambiguate. * @@ -762,6 +779,7 @@ enum isl_aux_usage { */ enum isl_aux_state { ISL_AUX_STATE_CLEAR = 0, + ISL_AUX_STATE_PARTIAL_CLEAR, ISL_AUX_STATE_COMPRESSED_CLEAR, ISL_AUX_STATE_COMPRESSED_NO_CLEAR, ISL_AUX_STATE_RESOLVED, |