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gallium/aux: add is_unorm() helper

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We already had one for is_snorm() but not unorm.

Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2018-12-11 11:13:49 -05:00
parent 85cd4df47f
commit 532f8c0043
2 changed files with 24 additions and 0 deletions
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21
src/gallium/auxiliary/util/u_format.c
View file

@ -169,6 +169,27 @@ util_format_is_snorm(enum pipe_format format)
desc->channel[i].normalized;
}
/**
* Returns true if all non-void channels are normalized unsigned.
*/
boolean
util_format_is_unorm(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
int i;
if (desc->is_mixed)
return FALSE;
i = util_format_get_first_non_void_channel(format);
if (i == -1)
return FALSE;
return desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED &&
!desc->channel[i].pure_integer &&
desc->channel[i].normalized;
}
boolean
util_format_is_snorm8(enum pipe_format format)
{

3
src/gallium/auxiliary/util/u_format.h
View file

@ -726,6 +726,9 @@ util_format_is_pure_uint(enum pipe_format format);
boolean
util_format_is_snorm(enum pipe_format format);
boolean
util_format_is_unorm(enum pipe_format format);
boolean
util_format_is_snorm8(enum pipe_format format);