From 532f8c0043142a32e1954950870bf8b84d288633 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Tue, 11 Dec 2018 11:13:49 -0500 Subject: gallium/aux: add is_unorm() helper We already had one for is_snorm() but not unorm. Signed-off-by: Rob Clark --- src/gallium/auxiliary/util/u_format.c | 21 +++++++++++++++++++++ src/gallium/auxiliary/util/u_format.h | 3 +++ 2 files changed, 24 insertions(+) diff --git a/src/gallium/auxiliary/util/u_format.c b/src/gallium/auxiliary/util/u_format.c index e43a619313e..231e89017b4 100644 --- a/src/gallium/auxiliary/util/u_format.c +++ b/src/gallium/auxiliary/util/u_format.c @@ -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) { diff --git a/src/gallium/auxiliary/util/u_format.h b/src/gallium/auxiliary/util/u_format.h index 5bcfc1f1154..8dcc438a4a1 100644 --- a/src/gallium/auxiliary/util/u_format.h +++ b/src/gallium/auxiliary/util/u_format.h @@ -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); -- cgit v1.2.3