diff options
| -rw-r--r-- | src/gallium/auxiliary/util/u_pack_color.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/util/u_pack_color.h b/src/gallium/auxiliary/util/u_pack_color.h index 655e2c82592..06abb34d5a0 100644 --- a/src/gallium/auxiliary/util/u_pack_color.h +++ b/src/gallium/auxiliary/util/u_pack_color.h @@ -255,20 +255,28 @@ util_pack_color(const float rgba[4], enum pipe_format format, void *dest) static INLINE uint util_pack_z(enum pipe_format format, double z) { + if (z == 0.0) + return 0; + switch (format) { case PIPE_FORMAT_Z16_UNORM: + if (z == 1.0) + return 0xffff; return (uint) (z * 0xffff); case PIPE_FORMAT_Z32_UNORM: /* special-case to avoid overflow */ if (z == 1.0) return 0xffffffff; - else - return (uint) (z * 0xffffffff); + return (uint) (z * 0xffffffff); case PIPE_FORMAT_S8Z24_UNORM: case PIPE_FORMAT_X8Z24_UNORM: + if (z == 1.0) + return 0xffffff; return (uint) (z * 0xffffff); case PIPE_FORMAT_Z24S8_UNORM: case PIPE_FORMAT_Z24X8_UNORM: + if (z == 1.0) + return 0xffffff00; return ((uint) (z * 0xffffff)) << 8; default: debug_print_format("gallium: unhandled format in util_pack_z()", format); |