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      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 
     34 struct d3d12_descriptor_pool;
     35 struct d3d12_descriptor_heap;
     36 
     37 struct 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 
     43 inline bool
     44 d3d12_descriptor_handle_is_allocated(struct d3d12_descriptor_handle *handle)
     45 {
     46     return (handle->heap != NULL);
     47 }
     48 
     49 void
     50 d3d12_descriptor_handle_free(struct d3d12_descriptor_handle *handle);
     51 
     52 /* Offline Descriptor Pool */
     53 
     54 struct d3d12_descriptor_pool*
     55 d3d12_descriptor_pool_new(struct d3d12_screen *screen,
     56                           D3D12_DESCRIPTOR_HEAP_TYPE type,
     57                           uint32_t num_descriptors);
     58 
     59 void
     60 d3d12_descriptor_pool_free(struct d3d12_descriptor_pool *pool);
     61 
     62 uint32_t
     63 d3d12_descriptor_pool_alloc_handle(struct d3d12_descriptor_pool *pool,
     64                                    struct d3d12_descriptor_handle *handle);
     65 
     66 
     67 /* Online/Offline Descriptor Heaps */
     68 
     69 struct d3d12_descriptor_heap*
     70 d3d12_descriptor_heap_new(ID3D12Device *device,
     71                           D3D12_DESCRIPTOR_HEAP_TYPE type,
     72                           D3D12_DESCRIPTOR_HEAP_FLAGS flags,
     73                           uint32_t num_descriptors);
     74 
     75 void
     76 d3d12_descriptor_heap_free(struct d3d12_descriptor_heap *heap);
     77 
     78 ID3D12DescriptorHeap*
     79 d3d12_descriptor_heap_get(struct d3d12_descriptor_heap *heap);
     80 
     81 void
     82 d2d12_descriptor_heap_get_next_handle(struct d3d12_descriptor_heap *heap,
     83                                       struct d3d12_descriptor_handle *handle);
     84 
     85 uint32_t
     86 d3d12_descriptor_heap_get_remaining_handles(struct d3d12_descriptor_heap *heap);
     87 
     88 uint32_t
     89 d3d12_descriptor_heap_alloc_handle(struct d3d12_descriptor_heap *heap,
     90                                    struct d3d12_descriptor_handle *handle);
     91 
     92 void
     93 d3d12_descriptor_heap_append_handles(struct d3d12_descriptor_heap *heap,
     94                                      D3D12_CPU_DESCRIPTOR_HANDLE *handles,
     95                                      unsigned num_handles);
     96 
     97 void
     98 d3d12_descriptor_heap_clear(struct d3d12_descriptor_heap *heap);
     99 
    100 #endif
    101