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/**************************************************************************
*
* Copyright 2010 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, 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 VMWARE AND/OR ITS 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 "lp_context.h"
#include "lp_state.h"
#include "lp_texture.h"
#include "util/u_memory.h"
#include "draw/draw_context.h"
static struct pipe_stream_output_target *
llvmpipe_create_so_target(struct pipe_context *pipe,
struct pipe_resource *buffer,
unsigned buffer_offset,
unsigned buffer_size)
{
struct draw_so_target *t;
t = CALLOC_STRUCT(draw_so_target);
if (!t)
return NULL;
t->target.context = pipe;
t->target.reference.count = 1;
pipe_resource_reference(&t->target.buffer, buffer);
t->target.buffer_offset = buffer_offset;
t->target.buffer_size = buffer_size;
return &t->target;
}
static void
llvmpipe_so_target_destroy(struct pipe_context *pipe,
struct pipe_stream_output_target *target)
{
pipe_resource_reference(&target->buffer, NULL);
FREE(target);
}
static void
llvmpipe_set_so_targets(struct pipe_context *pipe,
unsigned num_targets,
struct pipe_stream_output_target **targets,
const unsigned *offsets)
{
struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
int i;
for (i = 0; i < num_targets; i++) {
const boolean append = (offsets[i] == (unsigned)-1);
/*
* Warn if the so target was created in another context.
* XXX Not entirely sure if mesa/st may rely on this?
* Otherwise should just assert.
*/
if (targets[i] && targets[i]->context != pipe) {
debug_printf("Illegal setting of so target with target %d created in "
"another context\n", i);
}
pipe_so_target_reference((struct pipe_stream_output_target **)&llvmpipe->so_targets[i], targets[i]);
/* If we're not appending then lets set the internal
offset to what was requested */
if (!append && llvmpipe->so_targets[i]) {
llvmpipe->so_targets[i]->internal_offset = offsets[i];
}
if (targets[i]) {
void *buf = llvmpipe_resource(targets[i]->buffer)->data;
llvmpipe->so_targets[i]->mapping = buf;
}
}
for (; i < llvmpipe->num_so_targets; i++) {
pipe_so_target_reference((struct pipe_stream_output_target **)&llvmpipe->so_targets[i], NULL);
}
llvmpipe->num_so_targets = num_targets;
draw_set_mapped_so_targets(llvmpipe->draw, llvmpipe->num_so_targets,
llvmpipe->so_targets);
}
void
llvmpipe_init_so_funcs(struct llvmpipe_context *pipe)
{
pipe->pipe.create_stream_output_target = llvmpipe_create_so_target;
pipe->pipe.stream_output_target_destroy = llvmpipe_so_target_destroy;
pipe->pipe.set_stream_output_targets = llvmpipe_set_so_targets;
}
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