1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
// Copyright 2009-2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "rtcore.h"
namespace embree {
namespace instance_id_stack {
static_assert(RTC_MAX_INSTANCE_LEVEL_COUNT > 0,
"RTC_MAX_INSTANCE_LEVEL_COUNT must be greater than 0.");
/*******************************************************************************
* Instance ID stack manipulation.
* This is used from the instance intersector.
******************************************************************************/
/*
* Push an instance to the stack.
*/
RTC_FORCEINLINE bool push(RTCIntersectContext* context,
unsigned instanceId)
{
#if RTC_MAX_INSTANCE_LEVEL_COUNT > 1
const bool spaceAvailable = context->instStackSize < RTC_MAX_INSTANCE_LEVEL_COUNT;
/* We assert here because instances are silently dropped when the stack is full.
This might be quite hard to find in production. */
assert(spaceAvailable);
if (likely(spaceAvailable))
context->instID[context->instStackSize++] = instanceId;
return spaceAvailable;
#else
const bool spaceAvailable = (context->instID[0] == RTC_INVALID_GEOMETRY_ID);
assert(spaceAvailable);
if (likely(spaceAvailable))
context->instID[0] = instanceId;
return spaceAvailable;
#endif
}
/*
* Pop the last instance pushed to the stack.
* Do not call on an empty stack.
*/
RTC_FORCEINLINE void pop(RTCIntersectContext* context)
{
assert(context);
#if RTC_MAX_INSTANCE_LEVEL_COUNT > 1
assert(context->instStackSize > 0);
context->instID[--context->instStackSize] = RTC_INVALID_GEOMETRY_ID;
#else
assert(context->instID[0] != RTC_INVALID_GEOMETRY_ID);
context->instID[0] = RTC_INVALID_GEOMETRY_ID;
#endif
}
/*
* Optimized instance id stack copy.
* The copy() functions will either copy full
* stacks or copy only until the last valid element has been copied, depending
* on RTC_MAX_INSTANCE_LEVEL_COUNT.
*/
RTC_FORCEINLINE void copy_UU(const unsigned* src, unsigned* tgt)
{
#if (RTC_MAX_INSTANCE_LEVEL_COUNT == 1)
tgt[0] = src[0];
#else
for (unsigned l = 0; l < RTC_MAX_INSTANCE_LEVEL_COUNT; ++l) {
tgt[l] = src[l];
if (RTC_MAX_INSTANCE_LEVEL_COUNT > 4)
if (src[l] == RTC_INVALID_GEOMETRY_ID)
break;
}
#endif
}
template <int K>
RTC_FORCEINLINE void copy_UV(const unsigned* src, vuint<K>* tgt)
{
#if (RTC_MAX_INSTANCE_LEVEL_COUNT == 1)
tgt[0] = src[0];
#else
for (unsigned l = 0; l < RTC_MAX_INSTANCE_LEVEL_COUNT; ++l) {
tgt[l] = src[l];
if (RTC_MAX_INSTANCE_LEVEL_COUNT > 4)
if (src[l] == RTC_INVALID_GEOMETRY_ID)
break;
}
#endif
}
template <int K>
RTC_FORCEINLINE void copy_UV(const unsigned* src, vuint<K>* tgt, size_t j)
{
#if (RTC_MAX_INSTANCE_LEVEL_COUNT == 1)
tgt[0][j] = src[0];
#else
for (unsigned l = 0; l < RTC_MAX_INSTANCE_LEVEL_COUNT; ++l) {
tgt[l][j] = src[l];
if (RTC_MAX_INSTANCE_LEVEL_COUNT > 4)
if (src[l] == RTC_INVALID_GEOMETRY_ID)
break;
}
#endif
}
template <int K>
RTC_FORCEINLINE void copy_UV(const unsigned* src, vuint<K>* tgt, const vbool<K>& mask)
{
#if (RTC_MAX_INSTANCE_LEVEL_COUNT == 1)
vuint<K>::store(mask, tgt, src[0]);
#else
for (unsigned l = 0; l < RTC_MAX_INSTANCE_LEVEL_COUNT; ++l) {
vuint<K>::store(mask, tgt + l, src[l]);
if (RTC_MAX_INSTANCE_LEVEL_COUNT > 4)
if (src[l] == RTC_INVALID_GEOMETRY_ID)
break;
}
#endif
}
template <int K>
RTC_FORCEINLINE void copy_VU(const vuint<K>* src, unsigned* tgt, size_t i)
{
#if (RTC_MAX_INSTANCE_LEVEL_COUNT == 1)
tgt[0] = src[0][i];
#else
for (unsigned l = 0; l < RTC_MAX_INSTANCE_LEVEL_COUNT; ++l) {
tgt[l] = src[l][i];
if (RTC_MAX_INSTANCE_LEVEL_COUNT > 4)
if (src[l][i] == RTC_INVALID_GEOMETRY_ID)
break;
}
#endif
}
template <int K>
RTC_FORCEINLINE void copy_VV(const vuint<K>* src, vuint<K>* tgt, size_t i, size_t j)
{
#if (RTC_MAX_INSTANCE_LEVEL_COUNT == 1)
tgt[0][j] = src[0][i];
#else
for (unsigned l = 0; l < RTC_MAX_INSTANCE_LEVEL_COUNT; ++l) {
tgt[l][j] = src[l][i];
if (RTC_MAX_INSTANCE_LEVEL_COUNT > 4)
if (src[l][i] == RTC_INVALID_GEOMETRY_ID)
break;
}
#endif
}
template <int K>
RTC_FORCEINLINE void copy_VV(const vuint<K>* src, vuint<K>* tgt, const vbool<K>& mask)
{
#if (RTC_MAX_INSTANCE_LEVEL_COUNT == 1)
vuint<K>::store(mask, tgt, src[0]);
#else
vbool<K> done = !mask;
for (unsigned l = 0; l < RTC_MAX_INSTANCE_LEVEL_COUNT; ++l) {
vuint<K>::store(mask, tgt + l, src[l]);
if (RTC_MAX_INSTANCE_LEVEL_COUNT > 4) {
done |= src[l] == RTC_INVALID_GEOMETRY_ID;
if (all(done)) break;
}
}
#endif
}
} // namespace instance_id_stack
} // namespace embree
|
