[PATCH 1/2] gallium/util: implement util_format_is_yuv

[Lucas Stach]

This adds a helper to check if a pipe format is in YUV color space.
Drivers want to know about this, as YUV mostly needs special handling.

Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
 src/gallium/auxiliary/util/u_format.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/gallium/auxiliary/util/u_format.h b/src/gallium/auxiliary/util/u_format.h
index 88bfd72d0538..e497b4b3375a 100644
--- a/src/gallium/auxiliary/util/u_format.h
+++ b/src/gallium/auxiliary/util/u_format.h
@@ -557,6 +557,18 @@ util_format_is_depth_and_stencil(enum pipe_format format)
           util_format_has_stencil(desc);
 }
 
+static inline boolean
+util_format_is_yuv(enum pipe_format format)
+{
+   const struct util_format_description *desc = util_format_description(format);
+
+   assert(desc);
+   if (!desc) {
+      return FALSE;
+   }
+
+   return desc->colorspace == UTIL_FORMAT_COLORSPACE_YUV;
+}
 
 /**
  * Calculates the depth format type based upon the incoming format description.
-- 
2.16.1