1/*
2 * Copyright © 2016 Bas Nieuwenhuizen
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, sublicense,
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 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 NONINFRINGEMENT.  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#ifndef TU_DESCRIPTOR_SET_H
25#define TU_DESCRIPTOR_SET_H
26
27#include <vulkan/vulkan.h>
28
29#define MAX_SETS 32
30
31struct tu_descriptor_set_binding_layout
32{
33   VkDescriptorType type;
34
35   /* Number of array elements in this binding */
36   uint32_t array_size;
37
38   uint32_t offset;
39   uint32_t buffer_offset;
40   uint16_t dynamic_offset_offset;
41
42   uint16_t dynamic_offset_count;
43   /* redundant with the type, each for a single array element */
44   uint32_t size;
45
46   /* Offset in the tu_descriptor_set_layout of the immutable samplers, or 0
47    * if there are no immutable samplers. */
48   uint32_t immutable_samplers_offset;
49};
50
51struct tu_descriptor_set_layout
52{
53   /* The create flags for this descriptor set layout */
54   VkDescriptorSetLayoutCreateFlags flags;
55
56   /* Number of bindings in this descriptor set */
57   uint32_t binding_count;
58
59   /* Total size of the descriptor set with room for all array entries */
60   uint32_t size;
61
62   /* Shader stages affected by this descriptor set */
63   uint16_t shader_stages;
64   uint16_t dynamic_shader_stages;
65
66   /* Number of buffers in this descriptor set */
67   uint32_t buffer_count;
68
69   /* Number of dynamic offsets used by this descriptor set */
70   uint16_t dynamic_offset_count;
71
72   bool has_immutable_samplers;
73   bool has_variable_descriptors;
74
75   /* Bindings in this descriptor set */
76   struct tu_descriptor_set_binding_layout binding[0];
77};
78
79struct tu_pipeline_layout
80{
81   struct
82   {
83      struct tu_descriptor_set_layout *layout;
84      uint32_t size;
85      uint32_t dynamic_offset_start;
86   } set[MAX_SETS];
87
88   uint32_t num_sets;
89   uint32_t push_constant_size;
90   uint32_t dynamic_offset_count;
91
92   unsigned char sha1[20];
93};
94
95static inline const uint32_t *
96tu_immutable_samplers(const struct tu_descriptor_set_layout *set,
97                      const struct tu_descriptor_set_binding_layout *binding)
98{
99   return (const uint32_t *) ((const char *) set +
100                              binding->immutable_samplers_offset);
101}
102#endif /* TU_DESCRIPTOR_SET_H */
103