1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
|
/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#if defined(SDL_VIDEO_VULKAN) && defined(SDL_VIDEO_DRIVER_X11)
#include "../SDL_vulkan_internal.h"
#include "SDL_x11video.h"
#include "SDL_x11vulkan.h"
#include <X11/Xlib.h>
// #include <xcb/xcb.h>
#ifdef SDL_PLATFORM_OPENBSD
#define DEFAULT_VULKAN "libvulkan.so"
#define DEFAULT_X11_XCB "libX11-xcb.so"
#else
#define DEFAULT_VULKAN "libvulkan.so.1"
#define DEFAULT_X11_XCB "libX11-xcb.so.1"
#endif
/*
typedef uint32_t xcb_window_t;
typedef uint32_t xcb_visualid_t;
*/
bool X11_Vulkan_LoadLibrary(SDL_VideoDevice *_this, const char *path)
{
SDL_VideoData *videoData = _this->internal;
VkExtensionProperties *extensions = NULL;
Uint32 extensionCount = 0;
bool hasSurfaceExtension = false;
bool hasXlibSurfaceExtension = false;
bool hasXCBSurfaceExtension = false;
PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = NULL;
Uint32 i;
if (_this->vulkan_config.loader_handle) {
return SDL_SetError("Vulkan already loaded");
}
// Load the Vulkan loader library
if (!path) {
path = SDL_GetHint(SDL_HINT_VULKAN_LIBRARY);
}
if (!path) {
path = DEFAULT_VULKAN;
}
_this->vulkan_config.loader_handle = SDL_LoadObject(path);
if (!_this->vulkan_config.loader_handle) {
return false;
}
SDL_strlcpy(_this->vulkan_config.loader_path, path, SDL_arraysize(_this->vulkan_config.loader_path));
vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)SDL_LoadFunction(
_this->vulkan_config.loader_handle, "vkGetInstanceProcAddr");
if (!vkGetInstanceProcAddr) {
goto fail;
}
_this->vulkan_config.vkGetInstanceProcAddr = (void *)vkGetInstanceProcAddr;
_this->vulkan_config.vkEnumerateInstanceExtensionProperties =
(void *)((PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr)(
VK_NULL_HANDLE, "vkEnumerateInstanceExtensionProperties");
if (!_this->vulkan_config.vkEnumerateInstanceExtensionProperties) {
goto fail;
}
extensions = SDL_Vulkan_CreateInstanceExtensionsList(
(PFN_vkEnumerateInstanceExtensionProperties)
_this->vulkan_config.vkEnumerateInstanceExtensionProperties,
&extensionCount);
if (!extensions) {
goto fail;
}
for (i = 0; i < extensionCount; i++) {
if (SDL_strcmp(VK_KHR_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0) {
hasSurfaceExtension = true;
} else if (SDL_strcmp(VK_KHR_XCB_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0) {
hasXCBSurfaceExtension = true;
} else if (SDL_strcmp(VK_KHR_XLIB_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0) {
hasXlibSurfaceExtension = true;
}
}
SDL_free(extensions);
if (!hasSurfaceExtension) {
SDL_SetError("Installed Vulkan doesn't implement the " VK_KHR_SURFACE_EXTENSION_NAME " extension");
goto fail;
}
if (hasXlibSurfaceExtension) {
videoData->vulkan_xlib_xcb_library = NULL;
} else if (!hasXCBSurfaceExtension) {
SDL_SetError("Installed Vulkan doesn't implement either the " VK_KHR_XCB_SURFACE_EXTENSION_NAME "extension or the " VK_KHR_XLIB_SURFACE_EXTENSION_NAME " extension");
goto fail;
} else {
const char *libX11XCBLibraryName = SDL_GetHint(SDL_HINT_X11_XCB_LIBRARY);
if (!libX11XCBLibraryName || !*libX11XCBLibraryName) {
libX11XCBLibraryName = DEFAULT_X11_XCB;
}
videoData->vulkan_xlib_xcb_library = SDL_LoadObject(libX11XCBLibraryName);
if (!videoData->vulkan_xlib_xcb_library) {
goto fail;
}
videoData->vulkan_XGetXCBConnection =
(PFN_XGetXCBConnection)SDL_LoadFunction(videoData->vulkan_xlib_xcb_library, "XGetXCBConnection");
if (!videoData->vulkan_XGetXCBConnection) {
SDL_UnloadObject(videoData->vulkan_xlib_xcb_library);
goto fail;
}
}
return true;
fail:
SDL_UnloadObject(_this->vulkan_config.loader_handle);
_this->vulkan_config.loader_handle = NULL;
return false;
}
void X11_Vulkan_UnloadLibrary(SDL_VideoDevice *_this)
{
SDL_VideoData *videoData = _this->internal;
if (_this->vulkan_config.loader_handle) {
if (videoData->vulkan_xlib_xcb_library) {
SDL_UnloadObject(videoData->vulkan_xlib_xcb_library);
}
SDL_UnloadObject(_this->vulkan_config.loader_handle);
_this->vulkan_config.loader_handle = NULL;
}
}
char const* const* X11_Vulkan_GetInstanceExtensions(SDL_VideoDevice *_this,
Uint32 *count)
{
SDL_VideoData *videoData = _this->internal;
if (videoData->vulkan_xlib_xcb_library) {
static const char *const extensionsForXCB[] = {
VK_KHR_SURFACE_EXTENSION_NAME,
VK_KHR_XCB_SURFACE_EXTENSION_NAME,
};
if(count) {
*count = SDL_arraysize(extensionsForXCB);
}
return extensionsForXCB;
} else {
static const char *const extensionsForXlib[] = {
VK_KHR_SURFACE_EXTENSION_NAME,
VK_KHR_XLIB_SURFACE_EXTENSION_NAME,
};
if(count) {
*count = SDL_arraysize(extensionsForXlib);
}
return extensionsForXlib;
}
}
bool X11_Vulkan_CreateSurface(SDL_VideoDevice *_this,
SDL_Window *window,
VkInstance instance,
const struct VkAllocationCallbacks *allocator,
VkSurfaceKHR *surface)
{
SDL_VideoData *videoData = _this->internal;
SDL_WindowData *windowData = window->internal;
PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr;
if (!_this->vulkan_config.loader_handle) {
return SDL_SetError("Vulkan is not loaded");
}
vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr;
if (videoData->vulkan_xlib_xcb_library) {
PFN_vkCreateXcbSurfaceKHR vkCreateXcbSurfaceKHR =
(PFN_vkCreateXcbSurfaceKHR)vkGetInstanceProcAddr(instance,
"vkCreateXcbSurfaceKHR");
VkXcbSurfaceCreateInfoKHR createInfo;
VkResult result;
if (!vkCreateXcbSurfaceKHR) {
return SDL_SetError(VK_KHR_XCB_SURFACE_EXTENSION_NAME " extension is not enabled in the Vulkan instance.");
}
SDL_zero(createInfo);
createInfo.sType = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR;
createInfo.connection = videoData->vulkan_XGetXCBConnection(videoData->display);
if (!createInfo.connection) {
return SDL_SetError("XGetXCBConnection failed");
}
createInfo.window = (xcb_window_t)windowData->xwindow;
result = vkCreateXcbSurfaceKHR(instance, &createInfo, allocator, surface);
if (result != VK_SUCCESS) {
return SDL_SetError("vkCreateXcbSurfaceKHR failed: %s", SDL_Vulkan_GetResultString(result));
}
} else {
PFN_vkCreateXlibSurfaceKHR vkCreateXlibSurfaceKHR =
(PFN_vkCreateXlibSurfaceKHR)vkGetInstanceProcAddr(instance,
"vkCreateXlibSurfaceKHR");
VkXlibSurfaceCreateInfoKHR createInfo;
VkResult result;
if (!vkCreateXlibSurfaceKHR) {
return SDL_SetError(VK_KHR_XLIB_SURFACE_EXTENSION_NAME " extension is not enabled in the Vulkan instance.");
}
SDL_zero(createInfo);
createInfo.sType = VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR;
createInfo.dpy = videoData->display;
createInfo.window = (xcb_window_t)windowData->xwindow;
result = vkCreateXlibSurfaceKHR(instance, &createInfo, allocator, surface);
if (result != VK_SUCCESS) {
return SDL_SetError("vkCreateXlibSurfaceKHR failed: %s", SDL_Vulkan_GetResultString(result));
}
}
return true; // success!
}
void X11_Vulkan_DestroySurface(SDL_VideoDevice *_this,
VkInstance instance,
VkSurfaceKHR surface,
const struct VkAllocationCallbacks *allocator)
{
if (_this->vulkan_config.loader_handle) {
SDL_Vulkan_DestroySurface_Internal(_this->vulkan_config.vkGetInstanceProcAddr, instance, surface, allocator);
}
}
bool X11_Vulkan_GetPresentationSupport(SDL_VideoDevice *_this,
VkInstance instance,
VkPhysicalDevice physicalDevice,
Uint32 queueFamilyIndex)
{
SDL_VideoData *videoData = _this->internal;
PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr;
const char *forced_visual_id;
VisualID visualid;
if (!_this->vulkan_config.loader_handle) {
return SDL_SetError("Vulkan is not loaded");
}
vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr;
forced_visual_id = SDL_GetHint(SDL_HINT_VIDEO_X11_WINDOW_VISUALID);
if (forced_visual_id) {
visualid = SDL_strtol(forced_visual_id, NULL, 0);
} else {
visualid = X11_XVisualIDFromVisual(DefaultVisual(videoData->display, DefaultScreen(videoData->display)));
}
if (videoData->vulkan_xlib_xcb_library) {
PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR vkGetPhysicalDeviceXcbPresentationSupportKHR =
(PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR)vkGetInstanceProcAddr(
instance,
"vkGetPhysicalDeviceXcbPresentationSupportKHR");
if (!vkGetPhysicalDeviceXcbPresentationSupportKHR) {
return SDL_SetError(VK_KHR_XCB_SURFACE_EXTENSION_NAME " extension is not enabled in the Vulkan instance.");
}
return vkGetPhysicalDeviceXcbPresentationSupportKHR(physicalDevice,
queueFamilyIndex,
videoData->vulkan_XGetXCBConnection(videoData->display),
visualid);
} else {
PFN_vkGetPhysicalDeviceXlibPresentationSupportKHR vkGetPhysicalDeviceXlibPresentationSupportKHR =
(PFN_vkGetPhysicalDeviceXlibPresentationSupportKHR)vkGetInstanceProcAddr(
instance,
"vkGetPhysicalDeviceXlibPresentationSupportKHR");
if (!vkGetPhysicalDeviceXlibPresentationSupportKHR) {
return SDL_SetError(VK_KHR_XLIB_SURFACE_EXTENSION_NAME " extension is not enabled in the Vulkan instance.");
}
return vkGetPhysicalDeviceXlibPresentationSupportKHR(physicalDevice,
queueFamilyIndex,
videoData->display,
visualid);
}
}
#endif
|
