1 /*
2 * Copyright (c) 2017 Etnaviv Project
3 * Copyright (C) 2017 Zodiac Inflight Innovations
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sub license,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the
13 * next paragraph) shall be included in all copies or substantial portions
14 * of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 * Rob Clark <robclark@freedesktop.org>
26 * Christian Gmeiner <christian.gmeiner@gmail.com>
27 */
28
29 #include "util/u_inlines.h"
30 #include "util/u_memory.h"
31
32 #include "etnaviv_context.h"
33 #include "etnaviv_debug.h"
34 #include "etnaviv_emit.h"
35 #include "etnaviv_query_acc.h"
36 #include "etnaviv_screen.h"
37
38 /*
39 * Occlusion Query:
40 *
41 * OCCLUSION_COUNTER and OCCLUSION_PREDICATE differ only in how they
42 * interpret results
43 */
44
45 static bool
occlusion_supports(unsigned query_type)46 occlusion_supports(unsigned query_type)
47 {
48 switch (query_type) {
49 case PIPE_QUERY_OCCLUSION_COUNTER:
50 /* fallthrough */
51 case PIPE_QUERY_OCCLUSION_PREDICATE:
52 /* fallthrough */
53 case PIPE_QUERY_OCCLUSION_PREDICATE_CONSERVATIVE:
54 return true;
55 default:
56 return false;
57 }
58 }
59
60 static struct etna_acc_query *
occlusion_allocate(struct etna_context * ctx,ASSERTED unsigned query_type)61 occlusion_allocate(struct etna_context *ctx, ASSERTED unsigned query_type)
62 {
63 return CALLOC_STRUCT(etna_acc_query);
64 }
65
66 static void
occlusion_resume(struct etna_acc_query * aq,struct etna_context * ctx)67 occlusion_resume(struct etna_acc_query *aq, struct etna_context *ctx)
68 {
69 struct etna_resource *rsc = etna_resource(aq->prsc);
70 struct etna_reloc r = {
71 .bo = rsc->bo,
72 .flags = ETNA_RELOC_WRITE
73 };
74
75 if (aq->samples > 63) {
76 aq->samples = 63;
77 BUG("samples overflow");
78 }
79
80 r.offset = aq->samples * 8; /* 64bit value */
81
82 etna_set_state_reloc(ctx->stream, VIVS_GL_OCCLUSION_QUERY_ADDR, &r);
83 resource_written(ctx, aq->prsc);
84 }
85
86 static void
occlusion_suspend(struct etna_acc_query * aq,struct etna_context * ctx)87 occlusion_suspend(struct etna_acc_query *aq, struct etna_context *ctx)
88 {
89 /* 0x1DF5E76 is the value used by blob - but any random value will work */
90 etna_set_state(ctx->stream, VIVS_GL_OCCLUSION_QUERY_CONTROL, 0x1DF5E76);
91 resource_written(ctx, aq->prsc);
92 }
93
94 static bool
occlusion_result(struct etna_acc_query * aq,void * buf,union pipe_query_result * result)95 occlusion_result(struct etna_acc_query *aq, void *buf,
96 union pipe_query_result *result)
97 {
98 uint64_t sum = 0;
99 uint64_t *ptr = (uint64_t *)buf;
100
101 for (unsigned i = 0; i < aq->samples; i++)
102 sum += *(ptr + i);
103
104 if (aq->base.type == PIPE_QUERY_OCCLUSION_COUNTER)
105 result->u64 = sum;
106 else
107 result->b = !!sum;
108
109 return true;
110 }
111
112 const struct etna_acc_sample_provider occlusion_provider = {
113 .supports = occlusion_supports,
114 .allocate = occlusion_allocate,
115 .suspend = occlusion_suspend,
116 .resume = occlusion_resume,
117 .result = occlusion_result,
118 };
119