2 * Copyright © 2016 Bas Nieuwenhuizen
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:
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
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.
24 #ifndef TU_DESCRIPTOR_SET_H
25 #define TU_DESCRIPTOR_SET_H
27 #include <vulkan/vulkan.h>
29 /* The hardware supports 5 descriptor sets, but we reserve 1 for dynamic
30 * descriptors and input attachments.
34 struct tu_descriptor_set_binding_layout
36 VkDescriptorType type
;
38 /* Number of array elements in this binding */
41 /* The size in bytes of each Vulkan descriptor. */
46 /* For descriptors that point to a buffer, index into the array of BO's to
47 * be added to the cmdbuffer's used BO list.
49 uint32_t buffer_offset
;
51 /* Index into the pDynamicOffsets array for dynamic descriptors, as well as
52 * the array of dynamic descriptors (offsetted by
53 * tu_pipeline_layout::set::dynamic_offset_start).
55 uint32_t dynamic_offset_offset
;
57 /* Index into the array of dynamic input attachment descriptors */
58 uint32_t input_attachment_offset
;
60 /* Offset in the tu_descriptor_set_layout of the immutable samplers, or 0
61 * if there are no immutable samplers. */
62 uint32_t immutable_samplers_offset
;
64 /* Shader stages that use this binding */
65 uint32_t shader_stages
;
68 struct tu_descriptor_set_layout
70 /* The create flags for this descriptor set layout */
71 VkDescriptorSetLayoutCreateFlags flags
;
73 /* Number of bindings in this descriptor set */
74 uint32_t binding_count
;
76 /* Total size of the descriptor set with room for all array entries */
79 /* Shader stages affected by this descriptor set */
80 uint16_t shader_stages
;
82 /* Number of dynamic offsets used by this descriptor set */
83 uint16_t dynamic_offset_count
;
85 /* Number of input attachments used by the descriptor set */
86 uint16_t input_attachment_count
;
88 /* A bitfield of which dynamic buffers are ubo's, to make the
89 * descriptor-binding-time patching easier.
93 uint32_t buffer_count
;
95 bool has_immutable_samplers
;
96 bool has_variable_descriptors
;
98 /* Bindings in this descriptor set */
99 struct tu_descriptor_set_binding_layout binding
[0];
102 struct tu_pipeline_layout
106 struct tu_descriptor_set_layout
*layout
;
108 uint32_t dynamic_offset_start
;
109 uint32_t input_attachment_start
;
113 uint32_t push_constant_size
;
114 uint32_t dynamic_offset_count
;
115 uint32_t input_attachment_count
;
117 unsigned char sha1
[20];
120 static inline const uint32_t *
121 tu_immutable_samplers(const struct tu_descriptor_set_layout
*set
,
122 const struct tu_descriptor_set_binding_layout
*binding
)
124 return (void *) ((const char *) set
+ binding
->immutable_samplers_offset
);
126 #endif /* TU_DESCRIPTOR_SET_H */