util/u_format: Round when converting depth values from float to z16_unorm.

This makes the z16_unorm -> float -> z16_unorm conversion lossless. Reviewed-by: Roland Scheidegger <sroland@vmware.com>
2012-12-20 12:03:45 +00:00 · 2012-12-20 12:03:45 +00:00 · 74f0731953
parent e8ca1a53a6
commit 74f0731953
1 changed files with 1 additions and 1 deletions
--- a/src/gallium/auxiliary/util/u_format_zs.c
+++ b/src/gallium/auxiliary/util/u_format_zs.c
@ -72,7 +72,7 @@ static INLINE uint16_t
 z32_float_to_z16_unorm(float z)
 {
   const float scale = 0xffff;
-   return (uint16_t)(z * scale);
+   return (uint16_t)(z * scale + 0.5f);
 }

 static INLINE float