diff options
| -rw-r--r-- | src/gallium/auxiliary/tgsi/tgsi_info.c | 13 | ||||
| -rw-r--r-- | src/gallium/docs/source/tgsi.rst | 164 | ||||
| -rw-r--r-- | src/gallium/include/pipe/p_shader_tokens.h | 13 |
3 files changed, 188 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_info.c b/src/gallium/auxiliary/tgsi/tgsi_info.c index b06b9bea7a8..8bf9aeb4284 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_info.c +++ b/src/gallium/auxiliary/tgsi/tgsi_info.c @@ -204,7 +204,18 @@ static const struct tgsi_opcode_info opcode_info[TGSI_OPCODE_LAST] = { 1, 0, 0, 0, 0, 0, OTHR, "MFENCE", TGSI_OPCODE_MFENCE }, { 1, 0, 0, 0, 0, 0, OTHR, "LFENCE", TGSI_OPCODE_LFENCE }, { 1, 0, 0, 0, 0, 0, OTHR, "SFENCE", TGSI_OPCODE_SFENCE }, - { 0, 0, 0, 0, 0, 0, OTHR, "BARRIER", TGSI_OPCODE_BARRIER } + { 0, 0, 0, 0, 0, 0, OTHR, "BARRIER", TGSI_OPCODE_BARRIER }, + + { 1, 3, 0, 0, 0, 0, OTHR, "ATOMUADD", TGSI_OPCODE_ATOMUADD }, + { 1, 3, 0, 0, 0, 0, OTHR, "ATOMXCHG", TGSI_OPCODE_ATOMXCHG }, + { 1, 4, 0, 0, 0, 0, OTHR, "ATOMCAS", TGSI_OPCODE_ATOMCAS }, + { 1, 3, 0, 0, 0, 0, OTHR, "ATOMAND", TGSI_OPCODE_ATOMAND }, + { 1, 3, 0, 0, 0, 0, OTHR, "ATOMOR", TGSI_OPCODE_ATOMOR }, + { 1, 3, 0, 0, 0, 0, OTHR, "ATOMXOR", TGSI_OPCODE_ATOMXOR }, + { 1, 3, 0, 0, 0, 0, OTHR, "ATOMUMIN", TGSI_OPCODE_ATOMUMIN }, + { 1, 3, 0, 0, 0, 0, OTHR, "ATOMUMAX", TGSI_OPCODE_ATOMUMAX }, + { 1, 3, 0, 0, 0, 0, OTHR, "ATOMIMIN", TGSI_OPCODE_ATOMIMIN }, + { 1, 3, 0, 0, 0, 0, OTHR, "ATOMIMAX", TGSI_OPCODE_ATOMIMAX } }; const struct tgsi_opcode_info * diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 20611cb3788..1155ff391c1 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -1563,6 +1563,170 @@ programs. threads terminates or never reaches an executed BARRIER instruction. +.. _atomopcodes: + +Atomic opcodes +^^^^^^^^^^^^^^ + +These opcodes provide atomic variants of some common arithmetic and +logical operations. In this context atomicity means that another +concurrent memory access operation that affects the same memory +location is guaranteed to be performed strictly before or after the +entire execution of the atomic operation. + +For the moment they're only valid in compute programs. + +.. opcode:: ATOMUADD - Atomic integer addition + + Syntax: ``ATOMUADD dst, resource, offset, src`` + + Example: ``ATOMUADD TEMP[0], RES[0], TEMP[1], TEMP[2]`` + + The following operation is performed atomically on each component: + +.. math:: + + dst_i = resource[offset]_i + + resource[offset]_i = dst_i + src_i + + +.. opcode:: ATOMXCHG - Atomic exchange + + Syntax: ``ATOMXCHG dst, resource, offset, src`` + + Example: ``ATOMXCHG TEMP[0], RES[0], TEMP[1], TEMP[2]`` + + The following operation is performed atomically on each component: + +.. math:: + + dst_i = resource[offset]_i + + resource[offset]_i = src_i + + +.. opcode:: ATOMCAS - Atomic compare-and-exchange + + Syntax: ``ATOMCAS dst, resource, offset, cmp, src`` + + Example: ``ATOMCAS TEMP[0], RES[0], TEMP[1], TEMP[2], TEMP[3]`` + + The following operation is performed atomically on each component: + +.. math:: + + dst_i = resource[offset]_i + + resource[offset]_i = (dst_i == cmp_i ? src_i : dst_i) + + +.. opcode:: ATOMAND - Atomic bitwise And + + Syntax: ``ATOMAND dst, resource, offset, src`` + + Example: ``ATOMAND TEMP[0], RES[0], TEMP[1], TEMP[2]`` + + The following operation is performed atomically on each component: + +.. math:: + + dst_i = resource[offset]_i + + resource[offset]_i = dst_i \& src_i + + +.. opcode:: ATOMOR - Atomic bitwise Or + + Syntax: ``ATOMOR dst, resource, offset, src`` + + Example: ``ATOMOR TEMP[0], RES[0], TEMP[1], TEMP[2]`` + + The following operation is performed atomically on each component: + +.. math:: + + dst_i = resource[offset]_i + + resource[offset]_i = dst_i | src_i + + +.. opcode:: ATOMXOR - Atomic bitwise Xor + + Syntax: ``ATOMXOR dst, resource, offset, src`` + + Example: ``ATOMXOR TEMP[0], RES[0], TEMP[1], TEMP[2]`` + + The following operation is performed atomically on each component: + +.. math:: + + dst_i = resource[offset]_i + + resource[offset]_i = dst_i \oplus src_i + + +.. opcode:: ATOMUMIN - Atomic unsigned minimum + + Syntax: ``ATOMUMIN dst, resource, offset, src`` + + Example: ``ATOMUMIN TEMP[0], RES[0], TEMP[1], TEMP[2]`` + + The following operation is performed atomically on each component: + +.. math:: + + dst_i = resource[offset]_i + + resource[offset]_i = (dst_i < src_i ? dst_i : src_i) + + +.. opcode:: ATOMUMAX - Atomic unsigned maximum + + Syntax: ``ATOMUMAX dst, resource, offset, src`` + + Example: ``ATOMUMAX TEMP[0], RES[0], TEMP[1], TEMP[2]`` + + The following operation is performed atomically on each component: + +.. math:: + + dst_i = resource[offset]_i + + resource[offset]_i = (dst_i > src_i ? dst_i : src_i) + + +.. opcode:: ATOMIMIN - Atomic signed minimum + + Syntax: ``ATOMIMIN dst, resource, offset, src`` + + Example: ``ATOMIMIN TEMP[0], RES[0], TEMP[1], TEMP[2]`` + + The following operation is performed atomically on each component: + +.. math:: + + dst_i = resource[offset]_i + + resource[offset]_i = (dst_i < src_i ? dst_i : src_i) + + +.. opcode:: ATOMIMAX - Atomic signed maximum + + Syntax: ``ATOMIMAX dst, resource, offset, src`` + + Example: ``ATOMIMAX TEMP[0], RES[0], TEMP[1], TEMP[2]`` + + The following operation is performed atomically on each component: + +.. math:: + + dst_i = resource[offset]_i + + resource[offset]_i = (dst_i > src_i ? dst_i : src_i) + + + Explanation of symbols used ------------------------------ diff --git a/src/gallium/include/pipe/p_shader_tokens.h b/src/gallium/include/pipe/p_shader_tokens.h index 41347ad2026..2579112a25b 100644 --- a/src/gallium/include/pipe/p_shader_tokens.h +++ b/src/gallium/include/pipe/p_shader_tokens.h @@ -418,7 +418,18 @@ struct tgsi_property_data { #define TGSI_OPCODE_SFENCE 165 #define TGSI_OPCODE_BARRIER 166 -#define TGSI_OPCODE_LAST 167 +#define TGSI_OPCODE_ATOMUADD 167 +#define TGSI_OPCODE_ATOMXCHG 168 +#define TGSI_OPCODE_ATOMCAS 169 +#define TGSI_OPCODE_ATOMAND 170 +#define TGSI_OPCODE_ATOMOR 171 +#define TGSI_OPCODE_ATOMXOR 172 +#define TGSI_OPCODE_ATOMUMIN 173 +#define TGSI_OPCODE_ATOMUMAX 174 +#define TGSI_OPCODE_ATOMIMIN 175 +#define TGSI_OPCODE_ATOMIMAX 176 + +#define TGSI_OPCODE_LAST 177 #define TGSI_SAT_NONE 0 /* do not saturate */ #define TGSI_SAT_ZERO_ONE 1 /* clamp to [0,1] */ |