panfrost: Allow R/RG/RGB varyings
This can be a bandwidth savings.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5423>
diff --git a/src/panfrost/include/panfrost-job.h b/src/panfrost/include/panfrost-job.h
index d6f1fc8..0fef5e4 100644
--- a/src/panfrost/include/panfrost-job.h
+++ b/src/panfrost/include/panfrost-job.h
@@ -257,6 +257,7 @@
* there are.
*/
#define MALI_NR_CHANNELS(n) ((n - 1) << 3)
+#define MALI_EXTRACT_CHANNELS(fmt) ((((fmt) >> 3) & 3) + 1)
/* If the high 3 bits are 3 to 6, then the low 3 bits say how big each
* component is, except the special MALI_CHANNEL_FLOAT which overrides what the