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gallium: add an IABS opcode to TGSI

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This is a necessary operation that is missing from TGSI.

Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Bryan Cain 2012-01-07 10:43:04 -06:00
parent 291e374ea5
commit 4c0f1fb5ec
4 changed files with 20 additions and 1 deletions
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4
src/gallium/auxiliary/tgsi/tgsi_exec.c
View file

@ -4193,6 +4193,10 @@ exec_instruction(
exec_vector_trinary(mach, inst, micro_ucmp, TGSI_EXEC_DATA_UINT, TGSI_EXEC_DATA_UINT);
break;
case TGSI_OPCODE_IABS:
exec_vector_unary(mach, inst, micro_iabs, TGSI_EXEC_DATA_INT, TGSI_EXEC_DATA_INT);
break;
default:
assert( 0 );
}

1
src/gallium/auxiliary/tgsi/tgsi_info.c
View file

@ -192,6 +192,7 @@ static const struct tgsi_opcode_info opcode_info[TGSI_OPCODE_LAST] =
{ 1, 1, 0, 0, 0, 0, "UARL", TGSI_OPCODE_UARL },
{ 1, 3, 0, 0, 0, 0, "UCMP", TGSI_OPCODE_UCMP },
{ 1, 1, 0, 0, 0, 0, "IABS", TGSI_OPCODE_IABS },
};
const struct tgsi_opcode_info *

13
src/gallium/docs/source/tgsi.rst
View file

@ -1043,6 +1043,19 @@ XXX so let's discuss it, yeah?
destination register, which is assumed to be an address (ADDR) register.
.. opcode:: IABS - Integer Absolute Value
.. math::
dst.x = |src.x|
dst.y = |src.y|
dst.z = |src.z|
dst.w = |src.w|
.. opcode:: SAD - Sum Of Absolute Differences
.. math::

3
src/gallium/include/pipe/p_shader_tokens.h
View file

@ -376,8 +376,9 @@ struct tgsi_property_data {
#define TGSI_OPCODE_UARL 157
#define TGSI_OPCODE_UCMP 158
#define TGSI_OPCODE_IABS 159
#define TGSI_OPCODE_LAST 159
#define TGSI_OPCODE_LAST 160
#define TGSI_SAT_NONE 0 /* do not saturate */
#define TGSI_SAT_ZERO_ONE 1 /* clamp to [0,1] */