1/*
2 * Copyright © Microsoft Corporation
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 D3D12_DESCRIPTOR_POOL_H
25#define D3D12_DESCRIPTOR_POOL_H
26
27#ifndef _WIN32
28#include <wsl/winadapter.h>
29#endif
30
31#define D3D12_IGNORE_SDK_LAYERS
32#include <directx/d3d12.h>
33
34struct d3d12_descriptor_pool;
35struct d3d12_descriptor_heap;
36
37struct d3d12_descriptor_handle {
38    D3D12_CPU_DESCRIPTOR_HANDLE cpu_handle;
39    D3D12_GPU_DESCRIPTOR_HANDLE gpu_handle;
40    struct d3d12_descriptor_heap *heap;
41};
42
43inline bool
44d3d12_descriptor_handle_is_allocated(struct d3d12_descriptor_handle *handle)
45{
46    return (handle->heap != NULL);
47}
48
49void
50d3d12_descriptor_handle_free(struct d3d12_descriptor_handle *handle);
51
52/* Offline Descriptor Pool */
53
54struct d3d12_descriptor_pool*
55d3d12_descriptor_pool_new(struct d3d12_screen *screen,
56                          D3D12_DESCRIPTOR_HEAP_TYPE type,
57                          uint32_t num_descriptors);
58
59void
60d3d12_descriptor_pool_free(struct d3d12_descriptor_pool *pool);
61
62uint32_t
63d3d12_descriptor_pool_alloc_handle(struct d3d12_descriptor_pool *pool,
64                                   struct d3d12_descriptor_handle *handle);
65
66
67/* Online/Offline Descriptor Heaps */
68
69struct d3d12_descriptor_heap*
70d3d12_descriptor_heap_new(ID3D12Device *device,
71                          D3D12_DESCRIPTOR_HEAP_TYPE type,
72                          D3D12_DESCRIPTOR_HEAP_FLAGS flags,
73                          uint32_t num_descriptors);
74
75void
76d3d12_descriptor_heap_free(struct d3d12_descriptor_heap *heap);
77
78ID3D12DescriptorHeap*
79d3d12_descriptor_heap_get(struct d3d12_descriptor_heap *heap);
80
81void
82d2d12_descriptor_heap_get_next_handle(struct d3d12_descriptor_heap *heap,
83                                      struct d3d12_descriptor_handle *handle);
84
85uint32_t
86d3d12_descriptor_heap_get_remaining_handles(struct d3d12_descriptor_heap *heap);
87
88uint32_t
89d3d12_descriptor_heap_alloc_handle(struct d3d12_descriptor_heap *heap,
90                                   struct d3d12_descriptor_handle *handle);
91
92void
93d3d12_descriptor_heap_append_handles(struct d3d12_descriptor_heap *heap,
94                                     D3D12_CPU_DESCRIPTOR_HANDLE *handles,
95                                     unsigned num_handles);
96
97void
98d3d12_descriptor_heap_clear(struct d3d12_descriptor_heap *heap);
99
100#endif
101