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 #include "d3d12_screen.h"
25 #include "d3d12_public.h"
26 #include "d3d12_debug.h"
27
28 #include "util/debug.h"
29 #include "util/u_memory.h"
30 #include "util/u_dl.h"
31
32 #include <dxgi1_4.h>
33
34 static IDXGIFactory4 *
get_dxgi_factory()35 get_dxgi_factory()
36 {
37 static const GUID IID_IDXGIFactory4 = {
38 0x1bc6ea02, 0xef36, 0x464f,
39 { 0xbf, 0x0c, 0x21, 0xca, 0x39, 0xe5, 0x16, 0x8a }
40 };
41
42 util_dl_library *dxgi_mod = util_dl_open(UTIL_DL_PREFIX "dxgi" UTIL_DL_EXT);
43 if (!dxgi_mod) {
44 debug_printf("D3D12: failed to load DXGI.DLL\n");
45 return NULL;
46 }
47
48 typedef HRESULT(WINAPI *PFN_CREATE_DXGI_FACTORY2)(UINT flags, REFIID riid, void **ppFactory);
49 PFN_CREATE_DXGI_FACTORY2 CreateDXGIFactory2;
50
51 CreateDXGIFactory2 = (PFN_CREATE_DXGI_FACTORY2)util_dl_get_proc_address(dxgi_mod, "CreateDXGIFactory2");
52 if (!CreateDXGIFactory2) {
53 debug_printf("D3D12: failed to load CreateDXGIFactory2 from DXGI.DLL\n");
54 return NULL;
55 }
56
57 UINT flags = 0;
58 #ifndef DEBUG
59 if (d3d12_debug & D3D12_DEBUG_DEBUG_LAYER)
60 #endif
61 flags |= DXGI_CREATE_FACTORY_DEBUG;
62
63 IDXGIFactory4 *factory = NULL;
64 HRESULT hr = CreateDXGIFactory2(flags, IID_IDXGIFactory4, (void **)&factory);
65 if (FAILED(hr)) {
66 debug_printf("D3D12: CreateDXGIFactory2 failed: %08x\n", hr);
67 return NULL;
68 }
69
70 return factory;
71 }
72
73 static IDXGIAdapter1 *
choose_dxgi_adapter(IDXGIFactory4 * factory,LUID * adapter)74 choose_dxgi_adapter(IDXGIFactory4 *factory, LUID *adapter)
75 {
76 IDXGIAdapter1 *ret;
77 if (adapter) {
78 if (SUCCEEDED(factory->EnumAdapterByLuid(*adapter,
79 IID_PPV_ARGS(&ret))))
80 return ret;
81 debug_printf("D3D12: requested adapter missing, falling back to auto-detection...\n");
82 }
83
84 bool want_warp = env_var_as_boolean("LIBGL_ALWAYS_SOFTWARE", false);
85 if (want_warp) {
86 if (SUCCEEDED(factory->EnumWarpAdapter(IID_PPV_ARGS(&ret))))
87 return ret;
88 debug_printf("D3D12: failed to enum warp adapter\n");
89 return NULL;
90 }
91
92 // The first adapter is the default
93 if (SUCCEEDED(factory->EnumAdapters1(0, &ret)))
94 return ret;
95
96 return NULL;
97 }
98
99 static const char *
dxgi_get_name(struct pipe_screen * screen)100 dxgi_get_name(struct pipe_screen *screen)
101 {
102 struct d3d12_dxgi_screen *dxgi_screen = d3d12_dxgi_screen(d3d12_screen(screen));
103 static char buf[1000];
104 if (dxgi_screen->description[0] == L'\0')
105 return "D3D12 (Unknown)";
106
107 snprintf(buf, sizeof(buf), "D3D12 (%S)", dxgi_screen->description);
108 return buf;
109 }
110
111 struct pipe_screen *
d3d12_create_dxgi_screen(struct sw_winsys * winsys,LUID * adapter_luid)112 d3d12_create_dxgi_screen(struct sw_winsys *winsys, LUID *adapter_luid)
113 {
114 struct d3d12_dxgi_screen *screen = CALLOC_STRUCT(d3d12_dxgi_screen);
115 if (!screen)
116 return nullptr;
117
118 screen->factory = get_dxgi_factory();
119 if (!screen->factory) {
120 FREE(screen);
121 return nullptr;
122 }
123
124 screen->adapter = choose_dxgi_adapter(screen->factory, adapter_luid);
125 if (!screen->adapter) {
126 debug_printf("D3D12: no suitable adapter\n");
127 FREE(screen);
128 return nullptr;
129 }
130
131 DXGI_ADAPTER_DESC1 adapter_desc = {};
132 if (FAILED(screen->adapter->GetDesc1(&adapter_desc))) {
133 debug_printf("D3D12: failed to retrieve adapter description\n");
134 FREE(screen);
135 return nullptr;
136 }
137
138 screen->base.vendor_id = adapter_desc.VendorId;
139 // Note: memory sizes in bytes, but stored in size_t, so may be capped at 4GB.
140 // In that case, adding before conversion to MB can easily overflow.
141 screen->base.memory_size_megabytes = (adapter_desc.DedicatedVideoMemory >> 20) +
142 (adapter_desc.DedicatedSystemMemory >> 20) +
143 (adapter_desc.SharedSystemMemory >> 20);
144 wcsncpy(screen->description, adapter_desc.Description, ARRAY_SIZE(screen->description));
145 screen->base.base.get_name = dxgi_get_name;
146
147 if (!d3d12_init_screen(&screen->base, winsys, screen->adapter)) {
148 debug_printf("D3D12: failed to initialize DXGI screen\n");
149 FREE(screen);
150 return nullptr;
151 }
152
153 return &screen->base.base;
154 }
155