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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 THE AUTHORS 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.
*
**************************************************************************/
/* Authors:
* Keith Whitwell, Qicheng Christopher Li, Brian Paul
*/
#include "draw/draw_context.h"
#include "pipe/p_defines.h"
#include "util/u_memory.h"
#include "lp_context.h"
#include "lp_flush.h"
#include "lp_fence.h"
#include "lp_query.h"
#include "lp_state.h"
static struct llvmpipe_query *llvmpipe_query( struct pipe_query *p )
{
return (struct llvmpipe_query *)p;
}
static struct pipe_query *
llvmpipe_create_query(struct pipe_context *pipe,
unsigned type)
{
struct llvmpipe_query *pq;
assert(type == PIPE_QUERY_OCCLUSION_COUNTER);
pq = CALLOC_STRUCT( llvmpipe_query );
return (struct pipe_query *) pq;
}
static void
llvmpipe_destroy_query(struct pipe_context *pipe, struct pipe_query *q)
{
struct llvmpipe_query *pq = llvmpipe_query(q);
/* Ideally we would refcount queries & not get destroyed until the
* last scene had finished with us.
*/
if (pq->fence) {
if (!lp_fence_issued(pq->fence))
llvmpipe_flush(pipe, NULL, __FUNCTION__);
if (!lp_fence_signalled(pq->fence))
lp_fence_wait(pq->fence);
lp_fence_reference(&pq->fence, NULL);
}
FREE(pq);
}
static boolean
llvmpipe_get_query_result(struct pipe_context *pipe,
struct pipe_query *q,
boolean wait,
void *vresult)
{
struct llvmpipe_query *pq = llvmpipe_query(q);
uint64_t *result = (uint64_t *)vresult;
int i;
if (!pq->fence) {
/* no fence because there was no scene, so results is zero */
*result = 0;
return TRUE;
}
if (!lp_fence_signalled(pq->fence)) {
if (!lp_fence_issued(pq->fence))
llvmpipe_flush(pipe, NULL, __FUNCTION__);
if (!wait)
return FALSE;
lp_fence_wait(pq->fence);
}
/* Sum the results from each of the threads:
*/
*result = 0;
for (i = 0; i < LP_MAX_THREADS; i++) {
*result += pq->count[i];
}
return TRUE;
}
static void
llvmpipe_begin_query(struct pipe_context *pipe, struct pipe_query *q)
{
struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
struct llvmpipe_query *pq = llvmpipe_query(q);
/* Check if the query is already in the scene. If so, we need to
* flush the scene now. Real apps shouldn't re-use a query in a
* frame of rendering.
*/
if (pq->fence && !lp_fence_issued(pq->fence)) {
llvmpipe_finish(pipe, __FUNCTION__);
}
memset(pq->count, 0, sizeof(pq->count));
lp_setup_begin_query(llvmpipe->setup, pq);
llvmpipe->active_query_count++;
llvmpipe->dirty |= LP_NEW_QUERY;
}
static void
llvmpipe_end_query(struct pipe_context *pipe, struct pipe_query *q)
{
struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
struct llvmpipe_query *pq = llvmpipe_query(q);
lp_setup_end_query(llvmpipe->setup, pq);
assert(llvmpipe->active_query_count);
llvmpipe->active_query_count--;
llvmpipe->dirty |= LP_NEW_QUERY;
}
void llvmpipe_init_query_funcs(struct llvmpipe_context *llvmpipe )
{
llvmpipe->pipe.create_query = llvmpipe_create_query;
llvmpipe->pipe.destroy_query = llvmpipe_destroy_query;
llvmpipe->pipe.begin_query = llvmpipe_begin_query;
llvmpipe->pipe.end_query = llvmpipe_end_query;
llvmpipe->pipe.get_query_result = llvmpipe_get_query_result;
}
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