tgsi: add BALLOT/READ_* opcodes

v2 (Nicolai):
- BALLOT isn't per-channel
- expand the documentation (also for VOTE_*)

v3:
- only BALLOT returns a 64-bit lanemask (Boyan)
- relax the requirement on READ_INVOC: the invocation number to read
  from must be uniform within a sub-group. This matches the
  GL_ARB_shader_ballot spect (and the v_readlane instruction of AMD
  GCN)

v4:
- hopefully really fix the doc of VOTE_* returns (Ilia)

Signed-off-by: Ilia Mirkin <[email protected]>
Signed-off-by: Nicolai Hähnle <[email protected]>
Reviewed-by: Marek Olšák <[email protected]> (v2)

1 files changed, 3 insertions, 3 deletions

diff --git a/src/gallium/include/pipe/p_shader_tokens.h b/src/gallium/include/pipe/p_shader_tokens.h
index 3d99a5f88bc..7e8b3caf23b 100644
--- a/src/gallium/include/pipe/p_shader_tokens.h
+++ b/src/gallium/include/pipe/p_shader_tokens.h
@@ -404,7 +404,7 @@ struct tgsi_property_data {
 #define TGSI_OPCODE_BRK                 73
 #define TGSI_OPCODE_IF                  74
 #define TGSI_OPCODE_UIF                 75
-                                /* gap */
+#define TGSI_OPCODE_READ_INVOC          76
 #define TGSI_OPCODE_ELSE                77
 #define TGSI_OPCODE_ENDIF               78
 
@@ -418,7 +418,7 @@ struct tgsi_property_data {
 #define TGSI_OPCODE_NOT                 85
 #define TGSI_OPCODE_TRUNC               86
 #define TGSI_OPCODE_SHL                 87
-                                /* gap */
+#define TGSI_OPCODE_BALLOT              88
 #define TGSI_OPCODE_AND                 89
 #define TGSI_OPCODE_OR                  90
 #define TGSI_OPCODE_MOD                 91
@@ -436,7 +436,7 @@ struct tgsi_property_data {
 #define TGSI_OPCODE_TXQ_LZ              103 /* TXQ for mipmap level 0 */
 #define TGSI_OPCODE_TXQS                104
 #define TGSI_OPCODE_RESQ                105
-                                /* gap */
+#define TGSI_OPCODE_READ_FIRST          106
 #define TGSI_OPCODE_NOP                 107
 
 #define TGSI_OPCODE_FSEQ                108