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authorJason Ekstrand <jason.ekstrand@intel.com>2016-04-15 21:36:21 -0700
committerJason Ekstrand <jason.ekstrand@intel.com>2016-04-21 20:44:27 -0700
commit2980507a1983b2af157dc538fb22e759c1d257e8 (patch)
tree5fcb0ca0a1fe3d81eb4b3ebd36796d9fc05df85f /src/intel/isl/isl_format.c
parent3415cf5f2f66128488a260f024e075f239368c35 (diff)
isl/format: Add a get_num_channels helper
Reviewed-by: Chad Versace <chad.versace@intel.com>
Diffstat (limited to 'src/intel/isl/isl_format.c')
-rw-r--r--src/intel/isl/isl_format.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/intel/isl/isl_format.c b/src/intel/isl/isl_format.c
index fd16ea19658..4d02b1dd1e6 100644
--- a/src/intel/isl/isl_format.c
+++ b/src/intel/isl/isl_format.c
@@ -75,6 +75,21 @@ isl_format_has_sint_channel(enum isl_format fmt)
return isl_format_has_channel_type(fmt, ISL_SINT);
}
+unsigned
+isl_format_get_num_channels(enum isl_format fmt)
+{
+ const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
+
+ assert(fmtl->channels.p.bits == 0);
+
+ return (fmtl->channels.r.bits > 0) +
+ (fmtl->channels.g.bits > 0) +
+ (fmtl->channels.b.bits > 0) +
+ (fmtl->channels.a.bits > 0) +
+ (fmtl->channels.l.bits > 0) +
+ (fmtl->channels.i.bits > 0);
+}
+
enum isl_format
isl_format_rgb_to_rgba(enum isl_format rgb)
{