src/freedreno/vulkan/tu_descriptor_set.h

   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
  31 struct 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
  51 struct 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
  79 struct 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
  95 static inline const uint32_t *
  96 tu_immutable_samplers(const struct tu_descriptor_set_layout *set,
  97                       const struct tu_descriptor_set_binding_layout *binding)
  98 {
  99    return (void *) ((const char *) set + binding->immutable_samplers_offset);
 100 }
 101 #endif /* TU_DESCRIPTOR_SET_H */