68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
/**************************************************************************
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*
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* Copyright 2010 Luca Barbieri
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifndef U_LINKAGE_H_
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#define U_LINKAGE_H_
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#include "pipe/p_compiler.h"
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#include "pipe/p_shader_tokens.h"
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struct util_semantic_set
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{
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unsigned long masks[256 / 8 / sizeof(unsigned long)];
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};
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static INLINE boolean
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util_semantic_set_contains(struct util_semantic_set *set, unsigned char value)
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{
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return !!(set->masks[value / (sizeof(long) * 8)] & (1 << (value / (sizeof(long) * 8))));
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}
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unsigned util_semantic_set_from_program_file(struct util_semantic_set *set, const struct tgsi_token *tokens, enum tgsi_file_type file);
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/* efficient_slots is the number of slots such that hardware performance is
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* the same for using that amount, with holes, or less slots but with less
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* holes.
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*
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* num_slots is the size of the layout array and hardware limit instead.
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*
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* efficient_slots == 0 or efficient_slots == num_slots are typical settings.
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*/
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void util_semantic_layout_from_set(unsigned char *layout, const struct util_semantic_set *set, unsigned efficient_slots, unsigned num_slots);
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static INLINE void
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util_semantic_table_from_layout(unsigned char *table, size_t table_size, unsigned char *layout,
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unsigned char first_slot_value, unsigned char num_slots)
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{
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unsigned char i;
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memset(table, 0xff, table_size);
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for(i = 0; i < num_slots; ++i)
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table[layout[i]] = first_slot_value + i;
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}
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#endif /* U_LINKAGE_H_ */
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