| /* |
| * Copyright 2010 Marek Olšák <maraeo@gmail.com> |
| * |
| * 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 |
| * on the rights to use, copy, modify, merge, publish, distribute, sub |
| * license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHOR(S) AND/OR THEIR 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. */ |
| |
| #include "r300_context.h" |
| #include "util/u_index_modify.h" |
| #include "util/u_upload_mgr.h" |
| |
| |
| void r300_translate_index_buffer(struct r300_context *r300, |
| struct pipe_index_buffer *ib, |
| struct pipe_resource **out_buffer, |
| unsigned *index_size, unsigned index_offset, |
| unsigned *start, unsigned count) |
| { |
| unsigned out_offset; |
| void *ptr; |
| |
| switch (*index_size) { |
| case 1: |
| *out_buffer = NULL; |
| u_upload_alloc(r300->uploader, 0, count * 2, |
| &out_offset, out_buffer, &ptr); |
| |
| util_shorten_ubyte_elts_to_userptr( |
| &r300->context, ib, index_offset, |
| *start, count, ptr); |
| |
| *index_size = 2; |
| *start = out_offset / 2; |
| break; |
| |
| case 2: |
| if (index_offset) { |
| *out_buffer = NULL; |
| u_upload_alloc(r300->uploader, 0, count * 2, |
| &out_offset, out_buffer, &ptr); |
| |
| util_rebuild_ushort_elts_to_userptr(&r300->context, ib, |
| index_offset, *start, |
| count, ptr); |
| |
| *start = out_offset / 2; |
| } |
| break; |
| |
| case 4: |
| if (index_offset) { |
| *out_buffer = NULL; |
| u_upload_alloc(r300->uploader, 0, count * 4, |
| &out_offset, out_buffer, &ptr); |
| |
| util_rebuild_uint_elts_to_userptr(&r300->context, ib, |
| index_offset, *start, |
| count, ptr); |
| |
| *start = out_offset / 4; |
| } |
| break; |
| } |
| } |
