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 /* Offset in the tu_descriptor_set_layout of the immutable samplers, or 0
58 * if there are no immutable samplers. */
59 uint32_t immutable_samplers_offset
;
61 /* Offset in the tu_descriptor_set_layout of the ycbcr samplers, or 0
62 * if there are no immutable samplers. */
63 uint32_t ycbcr_samplers_offset
;
65 /* Shader stages that use this binding */
66 uint32_t shader_stages
;
69 struct tu_descriptor_set_layout
71 /* The create flags for this descriptor set layout */
72 VkDescriptorSetLayoutCreateFlags flags
;
74 /* Number of bindings in this descriptor set */
75 uint32_t binding_count
;
77 /* Total size of the descriptor set with room for all array entries */
80 /* Shader stages affected by this descriptor set */
81 uint16_t shader_stages
;
83 /* Number of dynamic offsets used by this descriptor set */
84 uint16_t dynamic_offset_count
;
86 /* A bitfield of which dynamic buffers are ubo's, to make the
87 * descriptor-binding-time patching easier.
91 uint32_t buffer_count
;
93 bool has_immutable_samplers
;
94 bool has_variable_descriptors
;
96 /* Bindings in this descriptor set */
97 struct tu_descriptor_set_binding_layout binding
[0];
100 struct tu_pipeline_layout
104 struct tu_descriptor_set_layout
*layout
;
106 uint32_t dynamic_offset_start
;
110 uint32_t push_constant_size
;
111 uint32_t dynamic_offset_count
;
113 unsigned char sha1
[20];
116 static inline const uint32_t *
117 tu_immutable_samplers(const struct tu_descriptor_set_layout
*set
,
118 const struct tu_descriptor_set_binding_layout
*binding
)
120 return (void *) ((const char *) set
+ binding
->immutable_samplers_offset
);
123 static inline const struct tu_sampler_ycbcr_conversion
*
124 tu_immutable_ycbcr_samplers(const struct tu_descriptor_set_layout
*set
,
125 const struct tu_descriptor_set_binding_layout
*binding
)
127 if (!binding
->ycbcr_samplers_offset
)
130 return (void *) ((const char *) set
+ binding
->ycbcr_samplers_offset
);
133 #endif /* TU_DESCRIPTOR_SET_H */