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/*
* Copyright 2010 Red Hat Inc.
*
* 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.
*
* Authors: Dave Airlie
*/
#include <stdio.h>
#include "util/u_inlines.h"
#include "util/u_memory.h"
#include "util/u_upload_mgr.h"
#include "util/u_math.h"
#include "r300_screen_buffer.h"
void r300_upload_index_buffer(struct r300_context *r300,
struct pipe_resource **index_buffer,
unsigned index_size, unsigned *start,
unsigned count, const uint8_t *ptr)
{
unsigned index_offset;
*index_buffer = NULL;
u_upload_data(r300->uploader,
0, count * index_size, 4,
ptr + (*start * index_size),
&index_offset,
index_buffer);
*start = index_offset / index_size;
}
static void r300_buffer_destroy(struct pipe_screen *screen,
struct pipe_resource *buf)
{
struct r300_resource *rbuf = r300_resource(buf);
align_free(rbuf->malloced_buffer);
if (rbuf->buf)
pb_reference(&rbuf->buf, NULL);
FREE(rbuf);
}
static void *
r300_buffer_transfer_map( struct pipe_context *context,
struct pipe_resource *resource,
unsigned level,
unsigned usage,
const struct pipe_box *box,
struct pipe_transfer **ptransfer )
{
struct r300_context *r300 = r300_context(context);
struct radeon_winsys *rws = r300->screen->rws;
struct r300_resource *rbuf = r300_resource(resource);
struct pipe_transfer *transfer;
uint8_t *map;
transfer = slab_alloc(&r300->pool_transfers);
transfer->resource = resource;
transfer->level = level;
transfer->usage = usage;
transfer->box = *box;
transfer->stride = 0;
transfer->layer_stride = 0;
if (rbuf->malloced_buffer) {
*ptransfer = transfer;
return rbuf->malloced_buffer + box->x;
}
if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE &&
!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
assert(usage & PIPE_TRANSFER_WRITE);
/* Check if mapping this buffer would cause waiting for the GPU. */
if (r300->rws->cs_is_buffer_referenced(r300->cs, rbuf->buf, RADEON_USAGE_READWRITE) ||
!r300->rws->buffer_wait(rbuf->buf, 0, RADEON_USAGE_READWRITE)) {
unsigned i;
struct pb_buffer *new_buf;
/* Create a new one in the same pipe_resource. */
new_buf = r300->rws->buffer_create(r300->rws, rbuf->b.b.width0,
R300_BUFFER_ALIGNMENT,
rbuf->domain, 0);
if (new_buf) {
/* Discard the old buffer. */
pb_reference(&rbuf->buf, NULL);
rbuf->buf = new_buf;
/* We changed the buffer, now we need to bind it where the old one was bound. */
for (i = 0; i < r300->nr_vertex_buffers; i++) {
if (r300->vertex_buffer[i].buffer.resource == &rbuf->b.b) {
r300->vertex_arrays_dirty = TRUE;
break;
}
}
}
}
}
/* Buffers are never used for write, therefore mapping for read can be
* unsynchronized. */
if (!(usage & PIPE_TRANSFER_WRITE)) {
usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
}
map = rws->buffer_map(rbuf->buf, r300->cs, usage);
if (!map) {
slab_free(&r300->pool_transfers, transfer);
return NULL;
}
*ptransfer = transfer;
return map + box->x;
}
static void r300_buffer_transfer_unmap( struct pipe_context *pipe,
struct pipe_transfer *transfer )
{
struct r300_context *r300 = r300_context(pipe);
slab_free(&r300->pool_transfers, transfer);
}
static const struct u_resource_vtbl r300_buffer_vtbl =
{
NULL, /* get_handle */
r300_buffer_destroy, /* resource_destroy */
r300_buffer_transfer_map, /* transfer_map */
NULL, /* transfer_flush_region */
r300_buffer_transfer_unmap, /* transfer_unmap */
};
struct pipe_resource *r300_buffer_create(struct pipe_screen *screen,
const struct pipe_resource *templ)
{
struct r300_screen *r300screen = r300_screen(screen);
struct r300_resource *rbuf;
rbuf = MALLOC_STRUCT(r300_resource);
rbuf->b.b = *templ;
rbuf->b.vtbl = &r300_buffer_vtbl;
pipe_reference_init(&rbuf->b.b.reference, 1);
rbuf->b.b.screen = screen;
rbuf->domain = RADEON_DOMAIN_GTT;
rbuf->buf = NULL;
rbuf->malloced_buffer = NULL;
/* Allocate constant buffers and SWTCL vertex and index buffers in RAM.
* Note that uploaded index buffers use the flag PIPE_BIND_CUSTOM, so that
* we can distinguish them from user-created buffers.
*/
if (templ->bind & PIPE_BIND_CONSTANT_BUFFER ||
(!r300screen->caps.has_tcl && !(templ->bind & PIPE_BIND_CUSTOM))) {
rbuf->malloced_buffer = align_malloc(templ->width0, 64);
return &rbuf->b.b;
}
rbuf->buf =
r300screen->rws->buffer_create(r300screen->rws, rbuf->b.b.width0,
R300_BUFFER_ALIGNMENT,
rbuf->domain, 0);
if (!rbuf->buf) {
FREE(rbuf);
return NULL;
}
return &rbuf->b.b;
}
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