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 DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24#ifndef RADV_DESCRIPTOR_SET_H
25#define RADV_DESCRIPTOR_SET_H
26
27#include <vulkan/vulkan.h>
28
29#define MAX_SETS         32
30
31struct radv_descriptor_set_binding_layout {
32   VkDescriptorType type;
33
34   /* Number of array elements in this binding */
35   uint32_t array_size;
36
37   uint32_t offset;
38   uint32_t buffer_offset;
39   uint16_t dynamic_offset_offset;
40
41   uint16_t dynamic_offset_count;
42   /* redundant with the type, each for a single array element */
43   uint32_t size;
44
45   /* Offset in the radv_descriptor_set_layout of the immutable samplers, or 0
46    * if there are no immutable samplers. */
47   uint32_t immutable_samplers_offset;
48   bool immutable_samplers_equal;
49};
50
51struct radv_descriptor_set_layout {
52   /* The create flags for this descriptor set layout */
53   VkDescriptorSetLayoutCreateFlags flags;
54
55   /* Number of bindings in this descriptor set */
56   uint32_t binding_count;
57
58   /* Total size of the descriptor set with room for all array entries */
59   uint32_t size;
60
61   /* CPU size of this struct + all associated data, for hashing. */
62   uint32_t layout_size;
63
64   /* Shader stages affected by this descriptor set */
65   uint16_t shader_stages;
66   uint16_t dynamic_shader_stages;
67
68   /* Number of buffers in this descriptor set */
69   uint32_t buffer_count;
70
71   /* Number of dynamic offsets used by this descriptor set */
72   uint16_t dynamic_offset_count;
73
74   bool has_immutable_samplers;
75   bool has_variable_descriptors;
76
77   uint32_t ycbcr_sampler_offsets_offset;
78
79   /* Bindings in this descriptor set */
80   struct radv_descriptor_set_binding_layout binding[0];
81};
82
83struct radv_pipeline_layout {
84   struct {
85      struct radv_descriptor_set_layout *layout;
86      uint32_t size;
87      uint32_t dynamic_offset_start;
88   } set[MAX_SETS];
89
90   uint32_t num_sets;
91   uint32_t push_constant_size;
92   uint32_t dynamic_offset_count;
93   uint16_t dynamic_shader_stages;
94
95   unsigned char sha1[20];
96};
97
98static inline const uint32_t *
99radv_immutable_samplers(const struct radv_descriptor_set_layout *set,
100                        const struct radv_descriptor_set_binding_layout *binding) {
101	return (const uint32_t*)((const char*)set + binding->immutable_samplers_offset);
102}
103
104static inline unsigned
105radv_combined_image_descriptor_sampler_offset(const struct radv_descriptor_set_binding_layout *binding)
106{
107	return binding->size - ((!binding->immutable_samplers_equal) ? 16 : 0);
108}
109
110static inline const struct radv_sampler_ycbcr_conversion *
111radv_immutable_ycbcr_samplers(const struct radv_descriptor_set_layout *set,
112                              unsigned binding_index)
113{
114	if (!set->ycbcr_sampler_offsets_offset)
115		return NULL;
116
117	const uint32_t *offsets = (const uint32_t*)((const char*)set + set->ycbcr_sampler_offsets_offset);
118
119	if (offsets[binding_index] == 0)
120		return NULL;
121	return (const struct radv_sampler_ycbcr_conversion *)((const char*)set + offsets[binding_index]);
122}
123#endif /* RADV_DESCRIPTOR_SET_H */
124