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/**************************************************************************
*
* 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 boolean
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_slots == 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, size_t table_size, unsigned char *layout,
unsigned char first_slot_value, unsigned char num_slots)
{
unsigned char i;
memset(table, 0xff, table_size);
for(i = 0; i < num_slots; ++i)
table[layout[i]] = first_slot_value + i;
}
#endif /* U_LINKAGE_H_ */
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