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/* The purpose of this file is to abstract the differences between the Windows
25 * C ABI for D3D12 and the Linux ABI. Essentially, for class methods that return
26 * structures, the MSVC C++ ABI specifies that they are always called with the return
27 * structure allocated by the caller, and passed as a hidden second parameter,
28 * after "this". But the C compiler doesn't apply that automatically to the C
29 * equivalent definition of the method, and so that ABI needs to be explicitly
30 * embedded in the C function signature. For Linux, no such ABI difference between
31 * C and C++ exists, and so C callers should use the same signature as C++.
32 */
33
34#ifndef DZN_ABI_HELPER_H
35#define DZN_ABI_HELPER_H
36
37static inline D3D12_HEAP_PROPERTIES
38dzn_ID3D12Device2_GetCustomHeapProperties(ID3D12Device2 *dev, UINT node_mask, D3D12_HEAP_TYPE type)
39{
40    D3D12_HEAP_PROPERTIES ret;
41#ifdef _WIN32
42    ID3D12Device2_GetCustomHeapProperties(dev, &ret, node_mask, type);
43#elif D3D12_SDK_VERSION >= 606
44    ret = ID3D12Device2_GetCustomHeapProperties(dev, node_mask, type);
45#else
46    ret = ((D3D12_HEAP_PROPERTIES (STDMETHODCALLTYPE *)(ID3D12Device2 *, UINT, D3D12_HEAP_TYPE))dev->lpVtbl->GetCustomHeapProperties)(dev, node_mask, type);
47#endif
48    return ret;
49}
50
51static inline D3D12_RESOURCE_ALLOCATION_INFO
52dzn_ID3D12Device2_GetResourceAllocationInfo(ID3D12Device2 *dev, UINT visible_mask, UINT num_resource_descs, const D3D12_RESOURCE_DESC *resource_descs)
53{
54    D3D12_RESOURCE_ALLOCATION_INFO ret;
55#ifdef _WIN32
56    ID3D12Device2_GetResourceAllocationInfo(dev, &ret, visible_mask, num_resource_descs, resource_descs);
57#elif D3D12_SDK_VERSION >= 606
58    ret = ID3D12Device2_GetResourceAllocationInfo(dev, visible_mask, num_resource_descs, resource_descs);
59#else
60    ret = ((D3D12_RESOURCE_ALLOCATION_INFO (STDMETHODCALLTYPE *)(ID3D12Device2 *, UINT, UINT, const D3D12_RESOURCE_DESC *))
61        dev->lpVtbl->GetResourceAllocationInfo)(dev, visible_mask, num_resource_descs, resource_descs);
62#endif
63    return ret;
64}
65
66static inline D3D12_RESOURCE_DESC
67dzn_ID3D12Resource_GetDesc(ID3D12Resource *res)
68{
69    D3D12_RESOURCE_DESC ret;
70#ifdef _WIN32
71    ID3D12Resource_GetDesc(res, &ret);
72#elif D3D12_SDK_VERSION >= 606
73    ret = ID3D12Resource_GetDesc(res);
74#else
75    ret = ((D3D12_RESOURCE_DESC (STDMETHODCALLTYPE *)(ID3D12Resource *))res->lpVtbl->GetDesc)(res);
76#endif
77    return ret;
78}
79
80static inline D3D12_CPU_DESCRIPTOR_HANDLE
81dzn_ID3D12DescriptorHeap_GetCPUDescriptorHandleForHeapStart(ID3D12DescriptorHeap *heap)
82{
83    D3D12_CPU_DESCRIPTOR_HANDLE ret;
84#ifdef _WIN32
85    ID3D12DescriptorHeap_GetCPUDescriptorHandleForHeapStart(heap, &ret);
86#elif D3D12_SDK_VERSION >= 606
87    ret = ID3D12DescriptorHeap_GetCPUDescriptorHandleForHeapStart(heap);
88#else
89    ret = ((D3D12_CPU_DESCRIPTOR_HANDLE (STDMETHODCALLTYPE *)(ID3D12DescriptorHeap *))heap->lpVtbl->GetCPUDescriptorHandleForHeapStart)(heap);
90#endif
91    return ret;
92}
93
94static inline D3D12_GPU_DESCRIPTOR_HANDLE
95dzn_ID3D12DescriptorHeap_GetGPUDescriptorHandleForHeapStart(ID3D12DescriptorHeap *heap)
96{
97    D3D12_GPU_DESCRIPTOR_HANDLE ret;
98#ifdef _WIN32
99    ID3D12DescriptorHeap_GetGPUDescriptorHandleForHeapStart(heap, &ret);
100#elif D3D12_SDK_VERSION >= 606
101    ret = ID3D12DescriptorHeap_GetGPUDescriptorHandleForHeapStart(heap);
102#else
103    ret = ((D3D12_GPU_DESCRIPTOR_HANDLE (STDMETHODCALLTYPE *)(ID3D12DescriptorHeap *))heap->lpVtbl->GetGPUDescriptorHandleForHeapStart)(heap);
104#endif
105    return ret;
106}
107
108#endif /*DZN_ABI_HELPER_H*/
109