forked from KolibriOS/kolibrios
204 lines
6.4 KiB
C
204 lines
6.4 KiB
C
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/*
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* Copyright 2010 Marek Olšák <maraeo@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE. */
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#include "pipe/p_context.h"
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#include "util/u_index_modify.h"
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#include "util/u_inlines.h"
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/* Ubyte indices. */
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void util_shorten_ubyte_elts_to_userptr(struct pipe_context *context,
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struct pipe_index_buffer *ib,
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int index_bias,
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unsigned start,
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unsigned count,
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void *out)
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{
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struct pipe_transfer *src_transfer = NULL;
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const unsigned char *in_map;
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unsigned short *out_map = out;
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unsigned i;
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if (ib->user_buffer) {
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in_map = ib->user_buffer;
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} else {
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in_map = pipe_buffer_map(context, ib->buffer,
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PIPE_TRANSFER_READ |
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PIPE_TRANSFER_UNSYNCHRONIZED,
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&src_transfer);
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}
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in_map += start;
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for (i = 0; i < count; i++) {
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*out_map = (unsigned short)(*in_map + index_bias);
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in_map++;
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out_map++;
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}
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if (src_transfer)
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pipe_buffer_unmap(context, src_transfer);
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}
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void util_shorten_ubyte_elts(struct pipe_context *context,
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struct pipe_index_buffer *ib,
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struct pipe_resource **out_buf,
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int index_bias,
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unsigned start,
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unsigned count)
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{
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struct pipe_resource* new_elts;
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unsigned short *out_map;
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struct pipe_transfer *dst_transfer;
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new_elts = pipe_buffer_create(context->screen,
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PIPE_BIND_INDEX_BUFFER,
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PIPE_USAGE_STATIC,
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2 * count);
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out_map = pipe_buffer_map(context, new_elts, PIPE_TRANSFER_WRITE,
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&dst_transfer);
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util_shorten_ubyte_elts_to_userptr(context, ib, index_bias,
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start, count, out_map);
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pipe_buffer_unmap(context, dst_transfer);
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pipe_resource_reference(out_buf, NULL);
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*out_buf = new_elts;
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}
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/* Ushort indices. */
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void util_rebuild_ushort_elts_to_userptr(struct pipe_context *context,
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struct pipe_index_buffer *ib,
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int index_bias,
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unsigned start, unsigned count,
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void *out)
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{
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struct pipe_transfer *in_transfer = NULL;
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const unsigned short *in_map;
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unsigned short *out_map = out;
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unsigned i;
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if (ib->user_buffer) {
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in_map = ib->user_buffer;
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} else {
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in_map = pipe_buffer_map(context, ib->buffer,
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PIPE_TRANSFER_READ |
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PIPE_TRANSFER_UNSYNCHRONIZED,
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&in_transfer);
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}
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in_map += start;
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for (i = 0; i < count; i++) {
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*out_map = (unsigned short)(*in_map + index_bias);
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in_map++;
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out_map++;
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}
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if (in_transfer)
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pipe_buffer_unmap(context, in_transfer);
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}
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void util_rebuild_ushort_elts(struct pipe_context *context,
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struct pipe_index_buffer *ib,
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struct pipe_resource **out_buf,
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int index_bias,
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unsigned start, unsigned count)
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{
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struct pipe_transfer *out_transfer = NULL;
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struct pipe_resource *new_elts;
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unsigned short *out_map;
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new_elts = pipe_buffer_create(context->screen,
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PIPE_BIND_INDEX_BUFFER,
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PIPE_USAGE_STATIC,
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2 * count);
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out_map = pipe_buffer_map(context, new_elts,
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PIPE_TRANSFER_WRITE, &out_transfer);
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util_rebuild_ushort_elts_to_userptr(context, ib, index_bias,
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start, count, out_map);
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pipe_buffer_unmap(context, out_transfer);
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pipe_resource_reference(out_buf, NULL);
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*out_buf = new_elts;
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}
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/* Uint indices. */
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void util_rebuild_uint_elts_to_userptr(struct pipe_context *context,
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struct pipe_index_buffer *ib,
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int index_bias,
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unsigned start, unsigned count,
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void *out)
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{
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struct pipe_transfer *in_transfer = NULL;
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const unsigned int *in_map;
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unsigned int *out_map = out;
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unsigned i;
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if (ib->user_buffer) {
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in_map = ib->user_buffer;
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} else {
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in_map = pipe_buffer_map(context, ib->buffer,
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PIPE_TRANSFER_READ |
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PIPE_TRANSFER_UNSYNCHRONIZED,
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&in_transfer);
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}
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in_map += start;
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for (i = 0; i < count; i++) {
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*out_map = (unsigned int)(*in_map + index_bias);
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in_map++;
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out_map++;
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}
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if (in_transfer)
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pipe_buffer_unmap(context, in_transfer);
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}
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void util_rebuild_uint_elts(struct pipe_context *context,
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struct pipe_index_buffer *ib,
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struct pipe_resource **out_buf,
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int index_bias,
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unsigned start, unsigned count)
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{
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struct pipe_transfer *out_transfer = NULL;
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struct pipe_resource *new_elts;
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unsigned int *out_map;
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new_elts = pipe_buffer_create(context->screen,
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PIPE_BIND_INDEX_BUFFER,
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PIPE_USAGE_STATIC,
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2 * count);
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out_map = pipe_buffer_map(context, new_elts,
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PIPE_TRANSFER_WRITE, &out_transfer);
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util_rebuild_uint_elts_to_userptr(context, ib, index_bias,
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start, count, out_map);
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pipe_buffer_unmap(context, out_transfer);
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pipe_resource_reference(out_buf, NULL);
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*out_buf = new_elts;
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}
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