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/*
* Copyright © 2014 Broadcom
*
* 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 (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 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.
*/
/**
* Gallium query object support.
*
* The HW has native support for occlusion queries, with the query result
* being loaded and stored by the TLB unit. From a SW perspective, we have to
* be careful to make sure that the jobs that need to be tracking queries are
* bracketed by the start and end of counting, even across FBO transitions.
*
* For the transform feedback PRIMITIVES_GENERATED/WRITTEN queries, we have to
* do the calculations in software at draw time.
*/
#include "v3d_context.h"
#include "broadcom/cle/v3d_packet_v33_pack.h"
struct v3d_query
{
enum pipe_query_type type;
struct v3d_bo *bo;
uint32_t start, end;
};
static struct pipe_query *
v3d_create_query(struct pipe_context *pctx, unsigned query_type, unsigned index)
{
struct v3d_query *q = calloc(1, sizeof(*q));
q->type = query_type;
/* Note that struct pipe_query isn't actually defined anywhere. */
return (struct pipe_query *)q;
}
static void
v3d_destroy_query(struct pipe_context *pctx, struct pipe_query *query)
{
struct v3d_query *q = (struct v3d_query *)query;
v3d_bo_unreference(&q->bo);
free(q);
}
static boolean
v3d_begin_query(struct pipe_context *pctx, struct pipe_query *query)
{
struct v3d_context *v3d = v3d_context(pctx);
struct v3d_query *q = (struct v3d_query *)query;
switch (q->type) {
case PIPE_QUERY_PRIMITIVES_GENERATED:
q->start = v3d->prims_generated;
break;
case PIPE_QUERY_PRIMITIVES_EMITTED:
q->start = v3d->tf_prims_generated;
break;
default:
q->bo = v3d_bo_alloc(v3d->screen, 4096, "query");
uint32_t *map = v3d_bo_map(q->bo);
*map = 0;
v3d->current_oq = q->bo;
v3d->dirty |= VC5_DIRTY_OQ;
break;
}
return true;
}
static bool
v3d_end_query(struct pipe_context *pctx, struct pipe_query *query)
{
struct v3d_context *v3d = v3d_context(pctx);
struct v3d_query *q = (struct v3d_query *)query;
switch (q->type) {
case PIPE_QUERY_PRIMITIVES_GENERATED:
q->end = v3d->prims_generated;
break;
case PIPE_QUERY_PRIMITIVES_EMITTED:
q->end = v3d->tf_prims_generated;
break;
default:
v3d->current_oq = NULL;
v3d->dirty |= VC5_DIRTY_OQ;
break;
}
return true;
}
static boolean
v3d_get_query_result(struct pipe_context *pctx, struct pipe_query *query,
boolean wait, union pipe_query_result *vresult)
{
struct v3d_query *q = (struct v3d_query *)query;
uint32_t result = 0;
if (q->bo) {
/* XXX: Only flush the jobs using this BO. */
v3d_flush(pctx);
if (wait) {
if (!v3d_bo_wait(q->bo, 0, "query"))
return false;
} else {
if (!v3d_bo_wait(q->bo, ~0ull, "query"))
return false;
}
/* XXX: Sum up per-core values. */
uint32_t *map = v3d_bo_map(q->bo);
result = *map;
v3d_bo_unreference(&q->bo);
}
switch (q->type) {
case PIPE_QUERY_OCCLUSION_COUNTER:
vresult->u64 = result;
break;
case PIPE_QUERY_OCCLUSION_PREDICATE:
case PIPE_QUERY_OCCLUSION_PREDICATE_CONSERVATIVE:
vresult->b = result != 0;
break;
case PIPE_QUERY_PRIMITIVES_GENERATED:
case PIPE_QUERY_PRIMITIVES_EMITTED:
vresult->u64 = q->end - q->start;
break;
default:
unreachable("unsupported query type");
}
return true;
}
static void
v3d_set_active_query_state(struct pipe_context *pctx, boolean enable)
{
struct v3d_context *v3d = v3d_context(pctx);
v3d->active_queries = enable;
v3d->dirty |= VC5_DIRTY_OQ;
v3d->dirty |= VC5_DIRTY_STREAMOUT;
}
void
v3d_query_init(struct pipe_context *pctx)
{
pctx->create_query = v3d_create_query;
pctx->destroy_query = v3d_destroy_query;
pctx->begin_query = v3d_begin_query;
pctx->end_query = v3d_end_query;
pctx->get_query_result = v3d_get_query_result;
pctx->set_active_query_state = v3d_set_active_query_state;
}
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