1 /************************************************************************** 2 * 3 * Copyright 2010 Luca Barbieri 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 * 25 **************************************************************************/ 26 27 #ifndef U_LINKAGE_H_ 28 #define U_LINKAGE_H_ 29 30 #include "pipe/p_compiler.h" 31 #include "pipe/p_shader_tokens.h" 32 33 struct util_semantic_set 34 { 35 unsigned long masks[256 / 8 / sizeof(unsigned long)]; 36 }; 37 38 static INLINE boolean 39 util_semantic_set_contains(struct util_semantic_set *set, unsigned char value) 40 { 41 return !!(set->masks[value / (sizeof(long) * 8)] & (1 << (value / (sizeof(long) * 8)))); 42 } 43 44 unsigned util_semantic_set_from_program_file(struct util_semantic_set *set, const struct tgsi_token *tokens, enum tgsi_file_type file); 45 46 /* efficient_slots is the number of slots such that hardware performance is 47 * the same for using that amount, with holes, or less slots but with less 48 * holes. 49 * 50 * num_slots is the size of the layout array and hardware limit instead. 51 * 52 * efficient_slots == 0 or efficient_slots == num_slots are typical settings. 53 */ 54 void util_semantic_layout_from_set(unsigned char *layout, const struct util_semantic_set *set, unsigned efficient_slots, unsigned num_slots); 55 56 static INLINE void 57 util_semantic_table_from_layout(unsigned char *table, size_t table_size, unsigned char *layout, 58 unsigned char first_slot_value, unsigned char num_slots) 59 { 60 unsigned char i; 61 memset(table, 0xff, table_size); 62 63 for(i = 0; i < num_slots; ++i) 64 table[layout[i]] = first_slot_value + i; 65 } 66 67 #endif /* U_LINKAGE_H_ */ 68
