src/gallium/drivers/virgl/virgl_query.c

   1 /*
   2  * Copyright 2014, 2015 Red Hat.
   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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * 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 AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include "util/u_memory.h"
  25 #include "util/u_inlines.h"
  26 #include "virgl_context.h"
  27 #include "virgl_encode.h"
  28 #include "virgl_protocol.h"
  29 #include "virgl_resource.h"
  30
  31 struct virgl_query {
  32    uint32_t handle;
  33    struct virgl_resource *buf;
  34
  35    unsigned index;
  36    unsigned type;
  37    unsigned result_size;
  38    unsigned result_gotten_sent;
  39 };
  40
  41 static inline struct virgl_query *virgl_query(struct pipe_query *q)
  42 {
  43    return (struct virgl_query *)q;
  44 }
  45
  46 static void virgl_render_condition(struct pipe_context *ctx,
  47                                   struct pipe_query *q,
  48                                   boolean condition,
  49                                   uint mode)
  50 {
  51    struct virgl_context *vctx = virgl_context(ctx);
  52    struct virgl_query *query = virgl_query(q);
  53    uint32_t handle = 0;
  54    if (q)
  55       handle = query->handle;
  56    virgl_encoder_render_condition(vctx, handle, condition, mode);
  57 }
  58
  59 static struct pipe_query *virgl_create_query(struct pipe_context *ctx,
  60                                             unsigned query_type, unsigned index)
  61 {
  62    struct virgl_context *vctx = virgl_context(ctx);
  63    struct virgl_query *query;
  64    uint32_t handle;
  65
  66    query = CALLOC_STRUCT(virgl_query);
  67    if (!query)
  68       return NULL;
  69
  70    query->buf = (struct virgl_resource *)pipe_buffer_create(ctx->screen, PIPE_BIND_CUSTOM,
  71                                                            PIPE_USAGE_STAGING, sizeof(struct virgl_host_query_state));
  72    if (!query->buf) {
  73       FREE(query);
  74       return NULL;
  75    }
  76
  77    handle = virgl_object_assign_handle();
  78    query->type = query_type;
  79    query->index = index;
  80    query->handle = handle;
  81    query->buf->clean = FALSE;
  82    virgl_encoder_create_query(vctx, handle, query_type, index, query->buf, 0);
  83
  84    return (struct pipe_query *)query;
  85 }
  86
  87 static void virgl_destroy_query(struct pipe_context *ctx,
  88                         struct pipe_query *q)
  89 {
  90    struct virgl_context *vctx = virgl_context(ctx);
  91    struct virgl_query *query = virgl_query(q);
  92
  93    virgl_encode_delete_object(vctx, query->handle, VIRGL_OBJECT_QUERY);
  94
  95    pipe_resource_reference((struct pipe_resource **)&query->buf, NULL);
  96    FREE(query);
  97 }
  98
  99 static boolean virgl_begin_query(struct pipe_context *ctx,
 100                              struct pipe_query *q)
 101 {
 102    struct virgl_context *vctx = virgl_context(ctx);
 103    struct virgl_query *query = virgl_query(q);
 104
 105    query->buf->clean = FALSE;
 106    virgl_encoder_begin_query(vctx, query->handle);
 107    return true;
 108 }
 109
 110 static void virgl_end_query(struct pipe_context *ctx,
 111                            struct pipe_query *q)
 112 {
 113    struct virgl_context *vctx = virgl_context(ctx);
 114    struct virgl_query *query = virgl_query(q);
 115    struct pipe_box box;
 116
 117    uint32_t qs = VIRGL_QUERY_STATE_WAIT_HOST;
 118    u_box_1d(0, 4, &box);
 119    virgl_transfer_inline_write(ctx, &query->buf->u.b, 0, PIPE_TRANSFER_WRITE,
 120                               &box, &qs, 0, 0);
 121
 122
 123    virgl_encoder_end_query(vctx, query->handle);
 124 }
 125
 126 static boolean virgl_get_query_result(struct pipe_context *ctx,
 127                                      struct pipe_query *q,
 128                                      boolean wait,
 129                                      union pipe_query_result *result)
 130 {
 131    struct virgl_context *vctx = virgl_context(ctx);
 132    struct virgl_query *query = virgl_query(q);
 133    struct pipe_transfer *transfer;
 134    struct virgl_host_query_state *host_state;
 135
 136    /* ask host for query result */
 137    if (!query->result_gotten_sent) {
 138       query->result_gotten_sent = 1;
 139       virgl_encoder_get_query_result(vctx, query->handle, 0);
 140       ctx->flush(ctx, NULL, 0);
 141    }
 142
 143    /* do we  have to flush? */
 144    /* now we can do the transfer to get the result back? */
 145  remap:
 146    host_state = pipe_buffer_map(ctx, &query->buf->u.b,
 147                                PIPE_TRANSFER_READ, &transfer);
 148
 149    if (host_state->query_state != VIRGL_QUERY_STATE_DONE) {
 150       pipe_buffer_unmap(ctx, transfer);
 151       if (wait)
 152          goto remap;
 153       else
 154          return FALSE;
 155    }
 156
 157    if (query->type == PIPE_QUERY_TIMESTAMP || query->type == PIPE_QUERY_TIME_ELAPSED)
 158       result->u64 = host_state->result;
 159    else
 160       result->u64 = (uint32_t)host_state->result;
 161
 162    pipe_buffer_unmap(ctx, transfer);
 163    query->result_gotten_sent = 0;
 164    return TRUE;
 165 }
 166
 167 void virgl_init_query_functions(struct virgl_context *vctx)
 168 {
 169    vctx->base.render_condition = virgl_render_condition;
 170    vctx->base.create_query = virgl_create_query;
 171    vctx->base.destroy_query = virgl_destroy_query;
 172    vctx->base.begin_query = virgl_begin_query;
 173    vctx->base.end_query = virgl_end_query;
 174    vctx->base.get_query_result = virgl_get_query_result;
 175 }