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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
/* Author:
* Keith Whitwell <keith@tungstengraphics.com>
*/
#include "draw/draw_context.h"
#include "pipe/p_defines.h"
#include "util/u_memory.h"
#include "sp_context.h"
#include "sp_query.h"
#include "sp_state.h"
struct softpipe_query {
uint64_t start;
uint64_t end;
};
static struct softpipe_query *softpipe_query( struct pipe_query *p )
{
return (struct softpipe_query *)p;
}
static struct pipe_query *
softpipe_create_query(struct pipe_context *pipe,
unsigned type)
{
assert(type == PIPE_QUERY_OCCLUSION_COUNTER);
return (struct pipe_query *)CALLOC_STRUCT( softpipe_query );
}
static void
softpipe_destroy_query(struct pipe_context *pipe, struct pipe_query *q)
{
FREE(q);
}
static void
softpipe_begin_query(struct pipe_context *pipe, struct pipe_query *q)
{
struct softpipe_context *softpipe = softpipe_context( pipe );
struct softpipe_query *sq = softpipe_query(q);
sq->start = softpipe->occlusion_count;
softpipe->active_query_count++;
softpipe->dirty |= SP_NEW_QUERY;
}
static void
softpipe_end_query(struct pipe_context *pipe, struct pipe_query *q)
{
struct softpipe_context *softpipe = softpipe_context( pipe );
struct softpipe_query *sq = softpipe_query(q);
softpipe->active_query_count--;
sq->end = softpipe->occlusion_count;
softpipe->dirty |= SP_NEW_QUERY;
}
static boolean
softpipe_get_query_result(struct pipe_context *pipe,
struct pipe_query *q,
boolean wait,
uint64_t *result )
{
struct softpipe_query *sq = softpipe_query(q);
*result = sq->end - sq->start;
return TRUE;
}
/**
* Called by rendering function to check rendering is conditional.
* \return TRUE if we should render, FALSE if we should skip rendering
*/
boolean
softpipe_check_render_cond(struct softpipe_context *sp)
{
struct pipe_context *pipe = &sp->pipe;
boolean b, wait;
uint64_t result;
if (!sp->render_cond_query) {
return TRUE; /* no query predicate, draw normally */
}
wait = (sp->render_cond_mode == PIPE_RENDER_COND_WAIT ||
sp->render_cond_mode == PIPE_RENDER_COND_BY_REGION_WAIT);
b = pipe->get_query_result(pipe, sp->render_cond_query, wait, &result);
if (b)
return result > 0;
else
return TRUE;
}
void softpipe_init_query_funcs(struct softpipe_context *softpipe )
{
softpipe->pipe.create_query = softpipe_create_query;
softpipe->pipe.destroy_query = softpipe_destroy_query;
softpipe->pipe.begin_query = softpipe_begin_query;
softpipe->pipe.end_query = softpipe_end_query;
softpipe->pipe.get_query_result = softpipe_get_query_result;
}
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