From: Marek Olšák <marek.ol...@amd.com>
---
src/gallium/auxiliary/util/u_format.c | 19 +++++++++++++++++++
src/gallium/auxiliary/util/u_format.h | 3 +++
2 files changed, 22 insertions(+)
diff --git a/src/gallium/auxiliary/util/u_format.c
b/src/gallium/auxiliary/util/u_format.c
index c1ce408..79630bf 100644
--- a/src/gallium/auxiliary/util/u_format.c
+++ b/src/gallium/auxiliary/util/u_format.c
@@ -170,6 +170,25 @@ util_format_is_snorm(enum pipe_format format)
}
boolean
+util_format_is_snorm8(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 &&
+ desc->channel[i].size == 8;
+}
+
+boolean
util_format_is_luminance_alpha(enum pipe_format format)
{
const struct util_format_description *desc =
diff --git a/src/gallium/auxiliary/util/u_format.h
b/src/gallium/auxiliary/util/u_format.h
index 42b39ff..a1b1b28 100644
--- a/src/gallium/auxiliary/util/u_format.h
+++ b/src/gallium/auxiliary/util/u_format.h
@@ -686,6 +686,9 @@ util_format_is_pure_uint(enum pipe_format format);
boolean
util_format_is_snorm(enum pipe_format format);
+boolean
+util_format_is_snorm8(enum pipe_format format);
+
/**
* Check if the src format can be blitted to the destination format with
* a simple memcpy. For example, blitting from RGBA to RGBx is OK, but not
--
2.1.4
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