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/**********************************************************
* Copyright 2008-2009 VMware, Inc. All rights reserved.
*
* 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 the rights to use, copy,
* modify, merge, publish, distribute, sublicense, 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 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
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* 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 "util/u_inlines.h"
#include "pipe/p_defines.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "tgsi/tgsi_parse.h"
#include "svga_screen.h"
#include "svga_resource_buffer.h"
#include "svga_context.h"
static void svga_set_vertex_buffers(struct pipe_context *pipe,
unsigned count,
const struct pipe_vertex_buffer *buffers)
{
struct svga_context *svga = svga_context(pipe);
unsigned i;
boolean any_user_buffer = FALSE;
/* Check for no change */
if (count == svga->curr.num_vertex_buffers &&
memcmp(svga->curr.vb, buffers, count * sizeof buffers[0]) == 0)
return;
/* Adjust refcounts */
for (i = 0; i < count; i++) {
pipe_resource_reference(&svga->curr.vb[i].buffer, buffers[i].buffer);
if (svga_buffer_is_user_buffer(buffers[i].buffer))
any_user_buffer = TRUE;
}
for ( ; i < svga->curr.num_vertex_buffers; i++)
pipe_resource_reference(&svga->curr.vb[i].buffer, NULL);
/* Copy remaining data */
memcpy(svga->curr.vb, buffers, count * sizeof buffers[0]);
svga->curr.num_vertex_buffers = count;
svga->curr.any_user_vertex_buffers = any_user_buffer;
svga->dirty |= SVGA_NEW_VBUFFER;
}
static void svga_set_index_buffer(struct pipe_context *pipe,
const struct pipe_index_buffer *ib)
{
struct svga_context *svga = svga_context(pipe);
if (ib) {
pipe_resource_reference(&svga->curr.ib.buffer, ib->buffer);
memcpy(&svga->curr.ib, ib, sizeof(svga->curr.ib));
}
else {
pipe_resource_reference(&svga->curr.ib.buffer, NULL);
memset(&svga->curr.ib, 0, sizeof(svga->curr.ib));
}
/* TODO make this more like a state */
}
static void *
svga_create_vertex_elements_state(struct pipe_context *pipe,
unsigned count,
const struct pipe_vertex_element *attribs)
{
struct svga_velems_state *velems;
assert(count <= PIPE_MAX_ATTRIBS);
velems = (struct svga_velems_state *) MALLOC(sizeof(struct svga_velems_state));
if (velems) {
velems->count = count;
memcpy(velems->velem, attribs, sizeof(*attribs) * count);
}
return velems;
}
static void svga_bind_vertex_elements_state(struct pipe_context *pipe,
void *velems)
{
struct svga_context *svga = svga_context(pipe);
struct svga_velems_state *svga_velems = (struct svga_velems_state *) velems;
svga->curr.velems = svga_velems;
svga->dirty |= SVGA_NEW_VELEMENT;
}
static void svga_delete_vertex_elements_state(struct pipe_context *pipe,
void *velems)
{
FREE(velems);
}
void svga_cleanup_vertex_state( struct svga_context *svga )
{
unsigned i;
for (i = 0 ; i < svga->curr.num_vertex_buffers; i++)
pipe_resource_reference(&svga->curr.vb[i].buffer, NULL);
}
void svga_init_vertex_functions( struct svga_context *svga )
{
svga->pipe.set_vertex_buffers = svga_set_vertex_buffers;
svga->pipe.set_index_buffer = svga_set_index_buffer;
svga->pipe.create_vertex_elements_state = svga_create_vertex_elements_state;
svga->pipe.bind_vertex_elements_state = svga_bind_vertex_elements_state;
svga->pipe.delete_vertex_elements_state = svga_delete_vertex_elements_state;
}
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