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/*
* 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;
}
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