diff options
author | James Benton <jbenton@vmware.com> | 2012-05-18 17:27:19 +0100 |
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committer | José Fonseca <jfonseca@vmware.com> | 2012-06-29 12:20:37 +0100 |
commit | 34075d4133f83e6fec31a62ee4b1b3c565abda56 (patch) | |
tree | b12268270d2644cd9cfc9de57094e0a3ad7e196c /src/gallium/auxiliary/util/u_format.c | |
parent | fcebb157f0eb6c2f374dee609a01b0b14856e7fc (diff) |
util: Added util_format_is_array.
This function checks whether a format description is in a simple array format.
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Diffstat (limited to 'src/gallium/auxiliary/util/u_format.c')
-rw-r--r-- | src/gallium/auxiliary/util/u_format.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_format.c b/src/gallium/auxiliary/util/u_format.c index cfc4a17a062..6f452983592 100644 --- a/src/gallium/auxiliary/util/u_format.c +++ b/src/gallium/auxiliary/util/u_format.c @@ -159,6 +159,38 @@ util_format_is_pure_uint(enum pipe_format format) } boolean +util_format_is_array(const struct util_format_description *desc) +{ + unsigned chan; + + if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN || + desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB || + desc->block.width != 1 || + desc->block.height != 1) { + return FALSE; + } + + for (chan = 0; chan < desc->nr_channels; ++chan) { + if (desc->swizzle[chan] != chan) + return FALSE; + + if (desc->channel[chan].type != desc->channel[0].type) + return FALSE; + + if (desc->channel[chan].normalized != desc->channel[0].normalized) + return FALSE; + + if (desc->channel[chan].pure_integer != desc->channel[0].pure_integer) + return FALSE; + + if (desc->channel[chan].size != desc->channel[0].size) + return FALSE; + } + + return TRUE; +} + +boolean util_format_is_luminance_alpha(enum pipe_format format) { const struct util_format_description *desc = |