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tgsi_scan: add support to count number of output clip distances 

Just add support to the scanner to count the number of clip distances.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2012-01-06 12:21:54 +00:00
parent 40c5987ed8
commit f7e3e46f72
2 changed files with 5 additions and 0 deletions
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4
src/gallium/auxiliary/tgsi/tgsi_scan.c
View File

@ -191,6 +191,10 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
info->output_semantic_index[reg] = (ubyte)fulldecl->Semantic.Index;
info->num_outputs++;
if (procType == TGSI_PROCESSOR_VERTEX &&
fulldecl->Semantic.Name == TGSI_SEMANTIC_CLIPDIST) {
info->num_written_clipdistance += util_bitcount(fulldecl->Declaration.UsageMask);
}
/* extra info for special outputs */
if (procType == TGSI_PROCESSOR_FRAGMENT &&
fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION)

1
src/gallium/auxiliary/tgsi/tgsi_scan.h
View File

@ -75,6 +75,7 @@ struct tgsi_shader_info
boolean pixel_center_integer;
boolean color0_writes_all_cbufs;
unsigned num_written_clipdistance;
/**
* Bitmask indicating which register files are accessed with
* indirect addressing. The bits are (1 << TGSI_FILE_x), etc.