src/gallium/drivers/lima/lima_query.c

   1 /*
   2  * Copyright (c) 2017-2019 Lima Project
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the
  12  * next paragraph) shall be included in all copies or substantial portions
  13  * of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  */
  24
  25 /**
  26  * Stub support for occlusion queries.
  27  *
  28  * Since we expose support for GL 2.0, we have to expose occlusion queries,
  29  * but the spec allows you to expose 0 query counter bits, so we just return 0
  30  * as the result of all our queries.
  31  */
  32
  33 #include "util/u_debug.h"
  34
  35 #include "lima_context.h"
  36
  37 struct lima_query
  38 {
  39    uint8_t pad;
  40 };
  41
  42 static struct pipe_query *
  43 lima_create_query(struct pipe_context *ctx, unsigned query_type, unsigned index)
  44 {
  45    struct lima_query *query = calloc(1, sizeof(*query));
  46
  47    /* Note that struct pipe_query isn't actually defined anywhere. */
  48    return (struct pipe_query *)query;
  49 }
  50
  51 static void
  52 lima_destroy_query(struct pipe_context *ctx, struct pipe_query *query)
  53 {
  54    free(query);
  55 }
  56
  57 static bool
  58 lima_begin_query(struct pipe_context *ctx, struct pipe_query *query)
  59 {
  60    return true;
  61 }
  62
  63 static bool
  64 lima_end_query(struct pipe_context *ctx, struct pipe_query *query)
  65 {
  66    return true;
  67 }
  68
  69 static bool
  70 lima_get_query_result(struct pipe_context *ctx, struct pipe_query *query,
  71                      bool wait, union pipe_query_result *vresult)
  72 {
  73    uint64_t *result = &vresult->u64;
  74
  75    *result = 0;
  76
  77    return true;
  78 }
  79
  80 static void
  81 lima_set_active_query_state(struct pipe_context *pipe, bool enable)
  82 {
  83
  84 }
  85
  86 void
  87 lima_query_init(struct lima_context *pctx)
  88 {
  89    pctx->base.create_query = lima_create_query;
  90    pctx->base.destroy_query = lima_destroy_query;
  91    pctx->base.begin_query = lima_begin_query;
  92    pctx->base.end_query = lima_end_query;
  93    pctx->base.get_query_result = lima_get_query_result;
  94    pctx->base.set_active_query_state = lima_set_active_query_state;
  95 }
  96