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gallium: add new float comparison instructions returning integer masks

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Newer graphic languages don't want messy float mask results but instead true
"boolean" mask results for float comparisons. Otherwise just need to convert
the floats back to integers. Need to keep the old opcodes however due to both
legacy (gl and d3d9) needing them and because older hw can't really deal with
integers. These new FSEQ/FSGE/FSLT/FSNE opcodes are part of integer API and
hence must be supported if a driver claims to support glsl 1.30 (or
PIPE_SHADER_CAP_INTEGERS).

Reviewed-by: Zack Rusin <zackr@vmware.com>
This commit is contained in:
Roland Scheidegger
2013-08-13 01:07:51 +02:00
parent 3b6cee1634
commit e7a5bf7a34
2 changed files with 82 additions and 17 deletions
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7
src/gallium/include/pipe/p_shader_tokens.h
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@@ -367,7 +367,12 @@ struct tgsi_property_data {
#define TGSI_OPCODE_TXQ_LZ 103 /* TXQ for mipmap level 0 */
/* gap */
#define TGSI_OPCODE_NOP 107
/* gap */
#define TGSI_OPCODE_FSEQ 108
#define TGSI_OPCODE_FSGE 109
#define TGSI_OPCODE_FSLT 110
#define TGSI_OPCODE_FSNE 111
#define TGSI_OPCODE_NRM4 112
#define TGSI_OPCODE_CALLNZ 113
/* gap */