diff options
| author | Marek Olšák <[email protected]> | 2016-01-01 19:42:44 +0100 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2016-01-07 18:26:05 +0100 |
| commit | ff7e77724e0cf1409f84118d0d4ceee65535ccdb (patch) | |
| tree | 6eaec8322d94fa23a7fdfe5868a43bc244bd4ade /src/gallium | |
| parent | 18ec76730a75b6fbc2783d6a84a844cb038456ff (diff) | |
tgsi/scan: set which color components are read by a fragment shader
This will be used by radeonsi.
Reviewed-by: Nicolai Hähnle <[email protected]>
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/auxiliary/tgsi/tgsi_scan.c | 30 | ||||
| -rw-r--r-- | src/gallium/auxiliary/tgsi/tgsi_scan.h | 1 |
2 files changed, 23 insertions, 8 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c index e3a6fb0437c..6ea32eedd74 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_scan.c +++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c @@ -187,14 +187,28 @@ tgsi_scan_shader(const struct tgsi_token *tokens, } if (procType == TGSI_PROCESSOR_FRAGMENT && - !src->Register.Indirect && - info->input_semantic_name[src->Register.Index] == - TGSI_SEMANTIC_POSITION && - (src->Register.SwizzleX == TGSI_SWIZZLE_Z || - src->Register.SwizzleY == TGSI_SWIZZLE_Z || - src->Register.SwizzleZ == TGSI_SWIZZLE_Z || - src->Register.SwizzleW == TGSI_SWIZZLE_Z)) { - info->reads_z = TRUE; + !src->Register.Indirect) { + unsigned name = + info->input_semantic_name[src->Register.Index]; + unsigned index = + info->input_semantic_index[src->Register.Index]; + + if (name == TGSI_SEMANTIC_POSITION && + (src->Register.SwizzleX == TGSI_SWIZZLE_Z || + src->Register.SwizzleY == TGSI_SWIZZLE_Z || + src->Register.SwizzleZ == TGSI_SWIZZLE_Z || + src->Register.SwizzleW == TGSI_SWIZZLE_Z)) + info->reads_z = TRUE; + + if (name == TGSI_SEMANTIC_COLOR) { + unsigned mask = + (1 << src->Register.SwizzleX) | + (1 << src->Register.SwizzleY) | + (1 << src->Register.SwizzleZ) | + (1 << src->Register.SwizzleW); + + info->colors_read |= mask << (index * 4); + } } } diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.h b/src/gallium/auxiliary/tgsi/tgsi_scan.h index a3e437809aa..b0b423ab528 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_scan.h +++ b/src/gallium/auxiliary/tgsi/tgsi_scan.h @@ -77,6 +77,7 @@ struct tgsi_shader_info uint opcode_count[TGSI_OPCODE_LAST]; /**< opcode histogram */ + ubyte colors_read; /**< which color components are read by the FS */ ubyte colors_written; boolean reads_position; /**< does fragment shader read position? */ boolean reads_z; /**< does fragment shader read depth? */ |