From a258701cd949d45041ed571ca08fedc40de2cf69 Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Fri, 16 Jul 2010 12:50:01 +0100 Subject: [PATCH] util: add uint version of pack_z_stencil Useful for packing mask values. --- src/gallium/auxiliary/util/u_pack_color.h | 47 +++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/src/gallium/auxiliary/util/u_pack_color.h b/src/gallium/auxiliary/util/u_pack_color.h index 3ebef9fb749..5f113f742b1 100644 --- a/src/gallium/auxiliary/util/u_pack_color.h +++ b/src/gallium/auxiliary/util/u_pack_color.h @@ -425,6 +425,53 @@ util_pack_color(const float rgba[4], enum pipe_format format, union util_color * } } +/* Integer versions of util_pack_z and util_pack_z_stencil - useful for + * constructing clear masks. + */ +static INLINE uint +util_pack_uint_z(enum pipe_format format, unsigned z) +{ + switch (format) { + case PIPE_FORMAT_Z16_UNORM: + return z & 0xffff; + case PIPE_FORMAT_Z32_UNORM: + case PIPE_FORMAT_Z32_FLOAT: + return z; + case PIPE_FORMAT_Z24_UNORM_S8_USCALED: + case PIPE_FORMAT_Z24X8_UNORM: + return z & 0xffffff; + case PIPE_FORMAT_S8_USCALED_Z24_UNORM: + case PIPE_FORMAT_X8Z24_UNORM: + return (z & 0xffffff) << 8; + case PIPE_FORMAT_S8_USCALED: + return 0; + default: + debug_print_format("gallium: unhandled format in util_pack_z()", format); + assert(0); + return 0; + } +} + +static INLINE uint +util_pack_uint_z_stencil(enum pipe_format format, double z, uint s) +{ + unsigned packed = util_pack_uint_z(format, z); + + s &= 0xff; + + switch (format) { + case PIPE_FORMAT_Z24_UNORM_S8_USCALED: + return packed | (s << 24); + case PIPE_FORMAT_S8_USCALED_Z24_UNORM: + return packed | s; + case PIPE_FORMAT_S8_USCALED: + return packed | s; + default: + return packed; + } +} + + /** * Note: it's assumed that z is in [0,1] -- 2.30.2