| /* |
| * 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 "pipe/p_context.h" |
| #include "util/u_index_modify.h" |
| #include "util/u_inlines.h" |
| |
| /* Ubyte indices. */ |
| |
| void util_shorten_ubyte_elts_to_userptr(struct pipe_context *context, |
| struct pipe_index_buffer *ib, |
| int index_bias, |
| unsigned start, |
| unsigned count, |
| void *out) |
| { |
| struct pipe_transfer *src_transfer = NULL; |
| const unsigned char *in_map; |
| unsigned short *out_map = out; |
| unsigned i; |
| |
| if (ib->user_buffer) { |
| in_map = ib->user_buffer; |
| } else { |
| in_map = pipe_buffer_map(context, ib->buffer, |
| PIPE_TRANSFER_READ | |
| PIPE_TRANSFER_UNSYNCHRONIZED, |
| &src_transfer); |
| } |
| in_map += start; |
| |
| for (i = 0; i < count; i++) { |
| *out_map = (unsigned short)(*in_map + index_bias); |
| in_map++; |
| out_map++; |
| } |
| |
| if (src_transfer) |
| pipe_buffer_unmap(context, src_transfer); |
| } |
| |
| void util_shorten_ubyte_elts(struct pipe_context *context, |
| struct pipe_index_buffer *ib, |
| struct pipe_resource **out_buf, |
| int index_bias, |
| unsigned start, |
| unsigned count) |
| { |
| struct pipe_resource* new_elts; |
| unsigned short *out_map; |
| struct pipe_transfer *dst_transfer; |
| |
| new_elts = pipe_buffer_create(context->screen, |
| PIPE_BIND_INDEX_BUFFER, |
| PIPE_USAGE_STATIC, |
| 2 * count); |
| |
| out_map = pipe_buffer_map(context, new_elts, PIPE_TRANSFER_WRITE, |
| &dst_transfer); |
| util_shorten_ubyte_elts_to_userptr(context, ib, index_bias, |
| start, count, out_map); |
| pipe_buffer_unmap(context, dst_transfer); |
| |
| pipe_resource_reference(out_buf, NULL); |
| *out_buf = new_elts; |
| } |
| |
| |
| /* Ushort indices. */ |
| |
| void util_rebuild_ushort_elts_to_userptr(struct pipe_context *context, |
| struct pipe_index_buffer *ib, |
| int index_bias, |
| unsigned start, unsigned count, |
| void *out) |
| { |
| struct pipe_transfer *in_transfer = NULL; |
| const unsigned short *in_map; |
| unsigned short *out_map = out; |
| unsigned i; |
| |
| if (ib->user_buffer) { |
| in_map = ib->user_buffer; |
| } else { |
| in_map = pipe_buffer_map(context, ib->buffer, |
| PIPE_TRANSFER_READ | |
| PIPE_TRANSFER_UNSYNCHRONIZED, |
| &in_transfer); |
| } |
| in_map += start; |
| |
| for (i = 0; i < count; i++) { |
| *out_map = (unsigned short)(*in_map + index_bias); |
| in_map++; |
| out_map++; |
| } |
| |
| if (in_transfer) |
| pipe_buffer_unmap(context, in_transfer); |
| } |
| |
| void util_rebuild_ushort_elts(struct pipe_context *context, |
| struct pipe_index_buffer *ib, |
| struct pipe_resource **out_buf, |
| int index_bias, |
| unsigned start, unsigned count) |
| { |
| struct pipe_transfer *out_transfer = NULL; |
| struct pipe_resource *new_elts; |
| unsigned short *out_map; |
| |
| new_elts = pipe_buffer_create(context->screen, |
| PIPE_BIND_INDEX_BUFFER, |
| PIPE_USAGE_STATIC, |
| 2 * count); |
| |
| out_map = pipe_buffer_map(context, new_elts, |
| PIPE_TRANSFER_WRITE, &out_transfer); |
| util_rebuild_ushort_elts_to_userptr(context, ib, index_bias, |
| start, count, out_map); |
| pipe_buffer_unmap(context, out_transfer); |
| |
| pipe_resource_reference(out_buf, NULL); |
| *out_buf = new_elts; |
| } |
| |
| |
| /* Uint indices. */ |
| |
| void util_rebuild_uint_elts_to_userptr(struct pipe_context *context, |
| struct pipe_index_buffer *ib, |
| int index_bias, |
| unsigned start, unsigned count, |
| void *out) |
| { |
| struct pipe_transfer *in_transfer = NULL; |
| const unsigned int *in_map; |
| unsigned int *out_map = out; |
| unsigned i; |
| |
| if (ib->user_buffer) { |
| in_map = ib->user_buffer; |
| } else { |
| in_map = pipe_buffer_map(context, ib->buffer, |
| PIPE_TRANSFER_READ | |
| PIPE_TRANSFER_UNSYNCHRONIZED, |
| &in_transfer); |
| } |
| in_map += start; |
| |
| for (i = 0; i < count; i++) { |
| *out_map = (unsigned int)(*in_map + index_bias); |
| in_map++; |
| out_map++; |
| } |
| |
| if (in_transfer) |
| pipe_buffer_unmap(context, in_transfer); |
| } |
| |
| void util_rebuild_uint_elts(struct pipe_context *context, |
| struct pipe_index_buffer *ib, |
| struct pipe_resource **out_buf, |
| int index_bias, |
| unsigned start, unsigned count) |
| { |
| struct pipe_transfer *out_transfer = NULL; |
| struct pipe_resource *new_elts; |
| unsigned int *out_map; |
| |
| new_elts = pipe_buffer_create(context->screen, |
| PIPE_BIND_INDEX_BUFFER, |
| PIPE_USAGE_STATIC, |
| 2 * count); |
| |
| out_map = pipe_buffer_map(context, new_elts, |
| PIPE_TRANSFER_WRITE, &out_transfer); |
| util_rebuild_uint_elts_to_userptr(context, ib, index_bias, |
| start, count, out_map); |
| pipe_buffer_unmap(context, out_transfer); |
| |
| pipe_resource_reference(out_buf, NULL); |
| *out_buf = new_elts; |
| } |