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| Rev | Author | Line No. | Line |
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| 5564 | serge | 1 | /* |
| 2 | * Copyright 2009 VMware, Inc. |
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| 3 | * All Rights Reserved. |
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| 4 | * |
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| 5 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 6 | * copy of this software and associated documentation files (the "Software"), |
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| 7 | * to deal in the Software without restriction, including without limitation |
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| 8 | * on the rights to use, copy, modify, merge, publish, distribute, sub |
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| 9 | * license, and/or sell copies of the Software, and to permit persons to whom |
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| 10 | * the Software is furnished to do so, subject to the following conditions: |
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| 11 | * |
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| 12 | * The above copyright notice and this permission notice (including the next |
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| 13 | * paragraph) shall be included in all copies or substantial portions of the |
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| 14 | * Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
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| 19 | * VMWARE AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, |
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| 20 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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| 21 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
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| 22 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 23 | */ |
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| 24 | |||
| 25 | #ifndef U_INDICES_H |
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| 26 | #define U_INDICES_H |
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| 27 | |||
| 28 | #include "pipe/p_compiler.h" |
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| 29 | |||
| 30 | #define PV_FIRST 0 |
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| 31 | #define PV_LAST 1 |
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| 32 | #define PV_COUNT 2 |
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| 33 | |||
| 34 | /* primitive restart disable/enable flags */ |
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| 35 | #define PR_DISABLE 0 |
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| 36 | #define PR_ENABLE 1 |
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| 37 | #define PR_COUNT 2 |
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| 38 | /** |
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| 39 | * Index translator function (for glDrawElements() case) |
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| 40 | * |
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| 41 | * \param in the input index buffer |
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| 42 | * \param start the index of the first vertex (pipe_draw_info::start) |
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| 43 | * \param nr the number of vertices (pipe_draw_info::count) |
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| 44 | * \param out output buffer big enough or nr vertices (of |
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| 45 | * @out_index_size bytes each) |
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| 46 | */ |
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| 47 | typedef void (*u_translate_func)( const void *in, |
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| 48 | unsigned start, |
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| 49 | unsigned in_nr, |
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| 50 | unsigned out_nr, |
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| 51 | unsigned restart_index, |
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| 52 | void *out ); |
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| 53 | |||
| 54 | /** |
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| 55 | * Index generator function (for glDrawArrays() case) |
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| 56 | * |
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| 57 | * \param start the index of the first vertex (pipe_draw_info::start) |
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| 58 | * \param nr the number of vertices (pipe_draw_info::count) |
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| 59 | * \param out output buffer big enough or nr vertices (of |
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| 60 | * @out_index_size bytes each) |
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| 61 | */ |
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| 62 | typedef void (*u_generate_func)( unsigned start, |
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| 63 | unsigned nr, |
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| 64 | void *out ); |
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| 65 | |||
| 66 | |||
| 67 | /* Return codes describe the translate/generate operation. Caller may |
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| 68 | * be able to reuse translated indices under some circumstances. |
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| 69 | */ |
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| 70 | #define U_TRANSLATE_ERROR -1 |
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| 71 | #define U_TRANSLATE_NORMAL 1 |
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| 72 | #define U_TRANSLATE_MEMCPY 2 |
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| 73 | #define U_GENERATE_LINEAR 3 |
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| 74 | #define U_GENERATE_REUSABLE 4 |
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| 75 | #define U_GENERATE_ONE_OFF 5 |
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| 76 | |||
| 77 | |||
| 78 | void u_index_init( void ); |
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| 79 | |||
| 80 | int u_index_translator( unsigned hw_mask, |
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| 81 | unsigned prim, |
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| 82 | unsigned in_index_size, |
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| 83 | unsigned nr, |
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| 84 | unsigned in_pv, /* API */ |
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| 85 | unsigned out_pv, /* hardware */ |
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| 86 | unsigned prim_restart, |
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| 87 | unsigned *out_prim, |
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| 88 | unsigned *out_index_size, |
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| 89 | unsigned *out_nr, |
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| 90 | u_translate_func *out_translate ); |
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| 91 | |||
| 92 | /* Note that even when generating it is necessary to know what the |
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| 93 | * API's PV is, as the indices generated will depend on whether it is |
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| 94 | * the same as hardware or not, and in the case of triangle strips, |
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| 95 | * whether it is first or last. |
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| 96 | */ |
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| 97 | int u_index_generator( unsigned hw_mask, |
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| 98 | unsigned prim, |
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| 99 | unsigned start, |
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| 100 | unsigned nr, |
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| 101 | unsigned in_pv, /* API */ |
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| 102 | unsigned out_pv, /* hardware */ |
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| 103 | unsigned *out_prim, |
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| 104 | unsigned *out_index_size, |
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| 105 | unsigned *out_nr, |
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| 106 | u_generate_func *out_generate ); |
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| 107 | |||
| 108 | |||
| 109 | void u_unfilled_init( void ); |
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| 110 | |||
| 111 | int u_unfilled_translator( unsigned prim, |
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| 112 | unsigned in_index_size, |
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| 113 | unsigned nr, |
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| 114 | unsigned unfilled_mode, |
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| 115 | unsigned *out_prim, |
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| 116 | unsigned *out_index_size, |
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| 117 | unsigned *out_nr, |
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| 118 | u_translate_func *out_translate ); |
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| 119 | |||
| 120 | int u_unfilled_generator( unsigned prim, |
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| 121 | unsigned start, |
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| 122 | unsigned nr, |
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| 123 | unsigned unfilled_mode, |
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| 124 | unsigned *out_prim, |
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| 125 | unsigned *out_index_size, |
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| 126 | unsigned *out_nr, |
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| 127 | u_generate_func *out_generate ); |
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| 128 | |||
| 129 | |||
| 130 | |||
| 131 | |||
| 132 | #endif |