/* * 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 bool 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: /* If we are using PRIMITIVE_COUNTS_FEEDBACK to retrieve * primitive counts from the GPU (which we need when a GS * is present), then we need to update our counters now * to discard any primitives generated before this. */ if (v3d->prog.gs) v3d_update_primitive_counters(v3d); q->start = v3d->prims_generated; break; case PIPE_QUERY_PRIMITIVES_EMITTED: /* If we are inside transform feedback we need to update the * primitive counts to skip primtives recorded before this. */ if (v3d->streamout.num_targets > 0) v3d_update_primitive_counters(v3d); q->start = v3d->tf_prims_generated; break; case PIPE_QUERY_OCCLUSION_COUNTER: case PIPE_QUERY_OCCLUSION_PREDICATE: case PIPE_QUERY_OCCLUSION_PREDICATE_CONSERVATIVE: 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; default: unreachable("unsupported query type"); } 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: /* If we are using PRIMITIVE_COUNTS_FEEDBACK to retrieve * primitive counts from the GPU (which we need when a GS * is present), then we need to update our counters now. */ if (v3d->prog.gs) v3d_update_primitive_counters(v3d); q->end = v3d->prims_generated; break; case PIPE_QUERY_PRIMITIVES_EMITTED: /* If transform feedback has ended, then we have already * updated the primitive counts at glEndTransformFeedback() * time. Otherwise, we have to do it now. */ if (v3d->streamout.num_targets > 0) v3d_update_primitive_counters(v3d); q->end = v3d->tf_prims_generated; break; case PIPE_QUERY_OCCLUSION_COUNTER: case PIPE_QUERY_OCCLUSION_PREDICATE: case PIPE_QUERY_OCCLUSION_PREDICATE_CONSERVATIVE: v3d->current_oq = NULL; v3d->dirty |= VC5_DIRTY_OQ; break; default: unreachable("unsupported query type"); } return true; } static bool v3d_get_query_result(struct pipe_context *pctx, struct pipe_query *query, bool wait, union pipe_query_result *vresult) { struct v3d_context *v3d = v3d_context(pctx); struct v3d_query *q = (struct v3d_query *)query; uint32_t result = 0; if (q->bo) { v3d_flush_jobs_using_bo(v3d, q->bo); if (wait) { if (!v3d_bo_wait(q->bo, ~0ull, "query")) return false; } else { if (!v3d_bo_wait(q->bo, 0, "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, bool 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; }