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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 
31 struct 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 
51 struct 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    /* Shader stages affected by this descriptor set */
62    uint16_t shader_stages;
63    uint16_t dynamic_shader_stages;
64 
65    /* Number of buffers in this descriptor set */
66    uint32_t buffer_count;
67 
68    /* Number of dynamic offsets used by this descriptor set */
69    uint16_t dynamic_offset_count;
70 
71    bool has_immutable_samplers;
72 
73    /* Bindings in this descriptor set */
74    struct radv_descriptor_set_binding_layout binding[0];
75 };
76 
77 struct radv_pipeline_layout {
78    struct {
79       struct radv_descriptor_set_layout *layout;
80       uint32_t size;
81       uint32_t dynamic_offset_start;
82    } set[MAX_SETS];
83 
84    uint32_t num_sets;
85    uint32_t push_constant_size;
86    uint32_t dynamic_offset_count;
87 
88    unsigned char sha1[20];
89 };
90 
91 static inline const uint32_t *
radv_immutable_samplers(const struct radv_descriptor_set_layout * set,const struct radv_descriptor_set_binding_layout * binding)92 radv_immutable_samplers(const struct radv_descriptor_set_layout *set,
93                         const struct radv_descriptor_set_binding_layout *binding) {
94 	return (const uint32_t*)((const char*)set + binding->immutable_samplers_offset);
95 }
96 #endif /* RADV_DESCRIPTOR_SET_H */
97