Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5563 | serge | 1 | /* |
| 2 | * Copyright 2010 Marek Olšák |
||
| 3 | * |
||
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
||
| 5 | * copy of this software and associated documentation files (the "Software"), |
||
| 6 | * to deal in the Software without restriction, including without limitation |
||
| 7 | * on the rights to use, copy, modify, merge, publish, distribute, sub |
||
| 8 | * license, and/or sell copies of the Software, and to permit persons to whom |
||
| 9 | * the Software is furnished to do so, subject to the following conditions: |
||
| 10 | * |
||
| 11 | * The above copyright notice and this permission notice (including the next |
||
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
||
| 13 | * Software. |
||
| 14 | * |
||
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
||
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
||
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
||
| 18 | * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, |
||
| 19 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
||
| 20 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
||
| 21 | * USE OR OTHER DEALINGS IN THE SOFTWARE. */ |
||
| 22 | |||
| 23 | #include "r300_context.h" |
||
| 24 | #include "util/u_index_modify.h" |
||
| 25 | #include "util/u_upload_mgr.h" |
||
| 26 | |||
| 27 | |||
| 28 | void r300_translate_index_buffer(struct r300_context *r300, |
||
| 29 | struct pipe_index_buffer *ib, |
||
| 30 | struct pipe_resource **out_buffer, |
||
| 31 | unsigned *index_size, unsigned index_offset, |
||
| 32 | unsigned *start, unsigned count) |
||
| 33 | { |
||
| 34 | unsigned out_offset; |
||
| 35 | void *ptr; |
||
| 36 | |||
| 37 | switch (*index_size) { |
||
| 38 | case 1: |
||
| 39 | *out_buffer = NULL; |
||
| 40 | u_upload_alloc(r300->uploader, 0, count * 2, |
||
| 41 | &out_offset, out_buffer, &ptr); |
||
| 42 | |||
| 43 | util_shorten_ubyte_elts_to_userptr( |
||
| 44 | &r300->context, ib, index_offset, |
||
| 45 | *start, count, ptr); |
||
| 46 | |||
| 47 | *index_size = 2; |
||
| 48 | *start = out_offset / 2; |
||
| 49 | break; |
||
| 50 | |||
| 51 | case 2: |
||
| 52 | if (index_offset) { |
||
| 53 | *out_buffer = NULL; |
||
| 54 | u_upload_alloc(r300->uploader, 0, count * 2, |
||
| 55 | &out_offset, out_buffer, &ptr); |
||
| 56 | |||
| 57 | util_rebuild_ushort_elts_to_userptr(&r300->context, ib, |
||
| 58 | index_offset, *start, |
||
| 59 | count, ptr); |
||
| 60 | |||
| 61 | *start = out_offset / 2; |
||
| 62 | } |
||
| 63 | break; |
||
| 64 | |||
| 65 | case 4: |
||
| 66 | if (index_offset) { |
||
| 67 | *out_buffer = NULL; |
||
| 68 | u_upload_alloc(r300->uploader, 0, count * 4, |
||
| 69 | &out_offset, out_buffer, &ptr); |
||
| 70 | |||
| 71 | util_rebuild_uint_elts_to_userptr(&r300->context, ib, |
||
| 72 | index_offset, *start, |
||
| 73 | count, ptr); |
||
| 74 | |||
| 75 | *start = out_offset / 4; |
||
| 76 | } |
||
| 77 | break; |
||
| 78 | } |
||
| 79 | } |