pan/lib: Refactor pan_padded_vertex_count

We are going to move everything in pan_encode.h for CL usage.

This inline the code used by pan_padded_vertex_count.

Signed-off-by: Mary Guillemard <mary.guillemard@collabora.com>
Acked-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Olivia Lee <olivia.lee@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35490>

src/panfrost/lib/pan_attributes.c

@@ -33,21 +33,15 @@
  * exactly how the hardware calculates this (which is why the
  * algorithm is so weird) or else instancing will break. */
 
-/* Given an odd number (of the form 2k + 1), compute k */
-#define ODD(odd) ((odd - 1) >> 1)
-
-static unsigned
-pan_small_padded_vertex_count(unsigned idx)
+unsigned
+pan_padded_vertex_count(unsigned vertex_count)
 {
-   if (idx < 10)
-      return idx;
-   else
-      return (idx + 1) & ~1;
-}
+   if (vertex_count < 10)
+      return vertex_count;
+
+   if (vertex_count < 20)
+      return (vertex_count + 1) & ~1;
 
-static unsigned
-pan_large_padded_vertex_count(uint32_t vertex_count)
-{
    /* First, we have to find the highest set one */
    unsigned highest = 32 - __builtin_clz(vertex_count);
 
@@ -78,15 +72,6 @@ pan_large_padded_vertex_count(uint32_t vertex_count)
    }
 }
 
-unsigned
-pan_padded_vertex_count(unsigned vertex_count)
-{
-   if (vertex_count < 20)
-      return pan_small_padded_vertex_count(vertex_count);
-   else
-      return pan_large_padded_vertex_count(vertex_count);
-}
-
 unsigned
 pan_compute_magic_divisor(unsigned hw_divisor, unsigned *divisor_r,
                           unsigned *divisor_e)