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authormarha <marha@users.sourceforge.net>2013-07-01 11:58:08 +0200
committermarha <marha@users.sourceforge.net>2013-07-01 11:58:08 +0200
commit458ea020a211b25c00c1de9e30e4434213b55f47 (patch)
tree86ce7ba4b2cc9a655d270a877202e129dcca6df3 /mesalib/src/gallium/auxiliary/util/u_format.c
parent6d46609dfd488f9433d0ed10f49d05e31a6fe51e (diff)
parent28d1f604563d9c738a4c5630364d0e6b4e9b13ff (diff)
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Merge remote-tracking branch 'origin/released'
* origin/released: mesa git update 1 Jul 2013
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_format.c')
-rw-r--r--mesalib/src/gallium/auxiliary/util/u_format.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_format.c b/mesalib/src/gallium/auxiliary/util/u_format.c
index 9bdc2eabf..686ca8a89 100644
--- a/mesalib/src/gallium/auxiliary/util/u_format.c
+++ b/mesalib/src/gallium/auxiliary/util/u_format.c
@@ -131,6 +131,26 @@ util_format_is_pure_uint(enum pipe_format format)
return (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED && desc->channel[i].pure_integer) ? TRUE : FALSE;
}
+/**
+ * Returns true if all non-void channels are normalized signed.
+ */
+boolean
+util_format_is_snorm(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_SIGNED &&
+ !desc->channel[i].pure_integer &&
+ desc->channel[i].normalized;
+}
boolean
util_format_is_luminance_alpha(enum pipe_format format)