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
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
/*
* Copyright © 2017 Intel Corporation
*
* 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.
*/
#ifndef VK_UTIL_H
#define VK_UTIL_H
/* common inlines and macros for vulkan drivers */
#include <vulkan/vulkan.h>
struct vk_struct_common {
VkStructureType sType;
struct vk_struct_common *pNext;
};
#define vk_foreach_struct(__iter, __start) \
for (struct vk_struct_common *__iter = (struct vk_struct_common *)(__start); \
__iter; __iter = __iter->pNext)
#define vk_foreach_struct_const(__iter, __start) \
for (const struct vk_struct_common *__iter = (const struct vk_struct_common *)(__start); \
__iter; __iter = __iter->pNext)
/**
* A wrapper for a Vulkan output array. A Vulkan output array is one that
* follows the convention of the parameters to
* vkGetPhysicalDeviceQueueFamilyProperties().
*
* Example Usage:
*
* VkResult
* vkGetPhysicalDeviceQueueFamilyProperties(
* VkPhysicalDevice physicalDevice,
* uint32_t* pQueueFamilyPropertyCount,
* VkQueueFamilyProperties* pQueueFamilyProperties)
* {
* VK_OUTARRAY_MAKE(props, pQueueFamilyProperties,
* pQueueFamilyPropertyCount);
*
* vk_outarray_append(&props, p) {
* p->queueFlags = ...;
* p->queueCount = ...;
* }
*
* vk_outarray_append(&props, p) {
* p->queueFlags = ...;
* p->queueCount = ...;
* }
*
* return vk_outarray_status(&props);
* }
*/
struct __vk_outarray {
/** May be null. */
void *data;
/**
* Capacity, in number of elements. Capacity is unlimited (UINT32_MAX) if
* data is null.
*/
uint32_t cap;
/**
* Count of elements successfully written to the array. Every write is
* considered successful if data is null.
*/
uint32_t *filled_len;
/**
* Count of elements that would have been written to the array if its
* capacity were sufficient. Vulkan functions often return VK_INCOMPLETE
* when `*filled_len < wanted_len`.
*/
uint32_t wanted_len;
};
static inline void
__vk_outarray_init(struct __vk_outarray *a,
void *data, uint32_t *restrict len)
{
a->data = data;
a->cap = *len;
a->filled_len = len;
*a->filled_len = 0;
a->wanted_len = 0;
if (a->data == NULL)
a->cap = UINT32_MAX;
}
static inline VkResult
__vk_outarray_status(const struct __vk_outarray *a)
{
if (*a->filled_len < a->wanted_len)
return VK_INCOMPLETE;
else
return VK_SUCCESS;
}
static inline void *
__vk_outarray_next(struct __vk_outarray *a, size_t elem_size)
{
void *p = NULL;
a->wanted_len += 1;
if (*a->filled_len >= a->cap)
return NULL;
if (a->data != NULL)
p = a->data + (*a->filled_len) * elem_size;
*a->filled_len += 1;
return p;
}
#define vk_outarray(elem_t) \
struct { \
struct __vk_outarray base; \
elem_t meta[]; \
}
#define vk_outarray_typeof_elem(a) __typeof__((a)->meta[0])
#define vk_outarray_sizeof_elem(a) sizeof((a)->meta[0])
#define vk_outarray_init(a, data, len) \
__vk_outarray_init(&(a)->base, (data), (len))
#define VK_OUTARRAY_MAKE(name, data, len) \
vk_outarray(__typeof__((data)[0])) name; \
vk_outarray_init(&name, (data), (len))
#define vk_outarray_status(a) \
__vk_outarray_status(&(a)->base)
#define vk_outarray_next(a) \
((vk_outarray_typeof_elem(a) *) \
__vk_outarray_next(&(a)->base, vk_outarray_sizeof_elem(a)))
/**
* Append to a Vulkan output array.
*
* This is a block-based macro. For example:
*
* vk_outarray_append(&a, elem) {
* elem->foo = ...;
* elem->bar = ...;
* }
*
* The array `a` has type `vk_outarray(elem_t) *`. It is usually declared with
* VK_OUTARRAY_MAKE(). The variable `elem` is block-scoped and has type
* `elem_t *`.
*
* The macro unconditionally increments the array's `wanted_len`. If the array
* is not full, then the macro also increment its `filled_len` and then
* executes the block. When the block is executed, `elem` is non-null and
* points to the newly appended element.
*/
#define vk_outarray_append(a, elem) \
for (vk_outarray_typeof_elem(a) *elem = vk_outarray_next(a); \
elem != NULL; elem = NULL)
static inline void *
__vk_find_struct(void *start, VkStructureType sType)
{
vk_foreach_struct(s, start) {
if (s->sType == sType)
return s;
}
return NULL;
}
#define vk_find_struct(__start, __sType) \
__vk_find_struct((__start), VK_STRUCTURE_TYPE_##__sType)
#define vk_find_struct_const(__start, __sType) \
(const void *)__vk_find_struct((void *)(__start), VK_STRUCTURE_TYPE_##__sType)
uint32_t vk_get_driver_version(void);
#define VK_EXT_OFFSET (1000000000UL)
#define VK_ENUM_EXTENSION(__enum) \
((__enum) >= VK_EXT_OFFSET ? ((((__enum) - VK_EXT_OFFSET) / 1000UL) + 1) : 0)
#define VK_ENUM_OFFSET(__enum) \
((__enum) >= VK_EXT_OFFSET ? ((__enum) % 1000) : (__enum))
#endif /* VK_UTIL_H */
|
