From e6ff995d14085caa447c4e8634bf069c8a94f0ec Mon Sep 17 00:00:00 2001 From: Luca Barbieri Date: Thu, 25 Feb 2010 13:08:35 +0100 Subject: gallium/auxiliary: add semantic linkage utility code --- src/gallium/auxiliary/util/u_linkage.h | 65 ++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 src/gallium/auxiliary/util/u_linkage.h (limited to 'src/gallium/auxiliary/util/u_linkage.h') diff --git a/src/gallium/auxiliary/util/u_linkage.h b/src/gallium/auxiliary/util/u_linkage.h new file mode 100644 index 00000000000..c30b56e6e47 --- /dev/null +++ b/src/gallium/auxiliary/util/u_linkage.h @@ -0,0 +1,65 @@ +/************************************************************************** + * + * Copyright 2010 Luca Barbieri + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial + * portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#ifndef U_LINKAGE_H_ +#define U_LINKAGE_H_ + +#include "pipe/p_compiler.h" +#include "pipe/p_shader_tokens.h" + +struct util_semantic_set +{ + unsigned long masks[256 / 8 / sizeof(unsigned long)]; +}; + +static INLINE bool +util_semantic_set_contains(struct util_semantic_set *set, unsigned char value) +{ + return !!(set->masks[value / (sizeof(long) * 8)] & (1 << (value / (sizeof(long) * 8)))); +} + +unsigned util_semantic_set_from_program_file(struct util_semantic_set *set, const struct tgsi_token *tokens, enum tgsi_file_type file); + +/* efficient_slots is the number of slots such that hardware performance is + * the same for using that amount, with holes, or less slots but with less + * holes. + * + * num_slots is the size of the layout array and hardware limit instead. + * + * efficient_slots == 0 or efficient_solts == num_slots are typical settings. + */ +void util_semantic_layout_from_set(unsigned char *layout, const struct util_semantic_set *set, unsigned efficient_slots, unsigned num_slots); + +static INLINE void +util_semantic_table_from_layout(unsigned char *table, unsigned char *layout, unsigned char first_slot_value, unsigned char num_slots) +{ + memset(table, 0xff, sizeof(table)); + + for(int i = 0; i < num_slots; ++i) + table[layout[i]] = first_slot_value + i; +} + +#endif /* U_LINKAGE_H_ */ -- cgit v1.2.3