SDL  2.0
SDL_x11vulkan.c
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
4 
5  This software is provided 'as-is', without any express or implied
6  warranty. In no event will the authors be held liable for any damages
7  arising from the use of this software.
8 
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12 
13  1. The origin of this software must not be misrepresented; you must not
14  claim that you wrote the original software. If you use this software
15  in a product, an acknowledgment in the product documentation would be
16  appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18  misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20 */
21 #include "../../SDL_internal.h"
22 
23 #if SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_X11
24 
25 #include "SDL_x11video.h"
26 #include "SDL_assert.h"
27 
28 #include "SDL_loadso.h"
29 #include "SDL_x11vulkan.h"
30 
31 #include <X11/Xlib.h>
32 /*#include <xcb/xcb.h>*/
33 /*
34 typedef uint32_t xcb_window_t;
35 typedef uint32_t xcb_visualid_t;
36 */
37 
38 int X11_Vulkan_LoadLibrary(_THIS, const char *path)
39 {
41  VkExtensionProperties *extensions = NULL;
42  Uint32 extensionCount = 0;
43  SDL_bool hasSurfaceExtension = SDL_FALSE;
44  SDL_bool hasXlibSurfaceExtension = SDL_FALSE;
45  SDL_bool hasXCBSurfaceExtension = SDL_FALSE;
47  Uint32 i;
49  return SDL_SetError("Vulkan already loaded");
50 
51  /* Load the Vulkan loader library */
52  if(!path)
53  path = SDL_getenv("SDL_VULKAN_LIBRARY");
54  if(!path)
55  path = "libvulkan.so.1";
58  return -1;
61  _this->vulkan_config.loader_handle, "vkGetInstanceProcAddr");
63  goto fail;
67  VK_NULL_HANDLE, "vkEnumerateInstanceExtensionProperties");
69  goto fail;
70  extensions = SDL_Vulkan_CreateInstanceExtensionsList(
73  &extensionCount);
74  if(!extensions)
75  goto fail;
76  for(i = 0; i < extensionCount; i++)
77  {
78  if(SDL_strcmp(VK_KHR_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
79  hasSurfaceExtension = SDL_TRUE;
80  else if(SDL_strcmp(VK_KHR_XCB_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
81  hasXCBSurfaceExtension = SDL_TRUE;
82  else if(SDL_strcmp(VK_KHR_XLIB_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
83  hasXlibSurfaceExtension = SDL_TRUE;
84  }
85  SDL_free(extensions);
86  if(!hasSurfaceExtension)
87  {
88  SDL_SetError("Installed Vulkan doesn't implement the "
89  VK_KHR_SURFACE_EXTENSION_NAME " extension");
90  goto fail;
91  }
92  if(hasXlibSurfaceExtension)
93  {
94  videoData->vulkan_xlib_xcb_library = NULL;
95  }
96  else if(!hasXCBSurfaceExtension)
97  {
98  SDL_SetError("Installed Vulkan doesn't implement either the "
99  VK_KHR_XCB_SURFACE_EXTENSION_NAME "extension or the "
100  VK_KHR_XLIB_SURFACE_EXTENSION_NAME " extension");
101  goto fail;
102  }
103  else
104  {
105  const char *libX11XCBLibraryName = SDL_getenv("SDL_X11_XCB_LIBRARY");
106  if(!libX11XCBLibraryName)
107  libX11XCBLibraryName = "libX11-xcb.so";
108  videoData->vulkan_xlib_xcb_library = SDL_LoadObject(libX11XCBLibraryName);
109  if(!videoData->vulkan_xlib_xcb_library)
110  goto fail;
111  videoData->vulkan_XGetXCBConnection =
112  SDL_LoadFunction(videoData->vulkan_xlib_xcb_library, "XGetXCBConnection");
113  if(!videoData->vulkan_XGetXCBConnection)
114  {
115  SDL_UnloadObject(videoData->vulkan_xlib_xcb_library);
116  goto fail;
117  }
118  }
119  return 0;
120 
121 fail:
124  return -1;
125 }
126 
127 void X11_Vulkan_UnloadLibrary(_THIS)
128 {
129  SDL_VideoData *videoData = (SDL_VideoData *)_this->driverdata;
131  {
132  if(videoData->vulkan_xlib_xcb_library)
133  SDL_UnloadObject(videoData->vulkan_xlib_xcb_library);
136  }
137 }
138 
139 SDL_bool X11_Vulkan_GetInstanceExtensions(_THIS,
141  unsigned *count,
142  const char **names)
143 {
144  SDL_VideoData *videoData = (SDL_VideoData *)_this->driverdata;
146  {
147  SDL_SetError("Vulkan is not loaded");
148  return SDL_FALSE;
149  }
150  if(videoData->vulkan_xlib_xcb_library)
151  {
152  static const char *const extensionsForXCB[] = {
153  VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_XCB_SURFACE_EXTENSION_NAME,
154  };
155  return SDL_Vulkan_GetInstanceExtensions_Helper(
156  count, names, SDL_arraysize(extensionsForXCB), extensionsForXCB);
157  }
158  else
159  {
160  static const char *const extensionsForXlib[] = {
161  VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_XLIB_SURFACE_EXTENSION_NAME,
162  };
163  return SDL_Vulkan_GetInstanceExtensions_Helper(
164  count, names, SDL_arraysize(extensionsForXlib), extensionsForXlib);
165  }
166 }
167 
168 SDL_bool X11_Vulkan_CreateSurface(_THIS,
169  SDL_Window *window,
170  VkInstance instance,
171  VkSurfaceKHR *surface)
172 {
173  SDL_VideoData *videoData = (SDL_VideoData *)_this->driverdata;
174  SDL_WindowData *windowData = (SDL_WindowData *)window->driverdata;
177  {
178  SDL_SetError("Vulkan is not loaded");
179  return SDL_FALSE;
180  }
182  if(videoData->vulkan_xlib_xcb_library)
183  {
184  PFN_vkCreateXcbSurfaceKHR vkCreateXcbSurfaceKHR =
185  (PFN_vkCreateXcbSurfaceKHR)vkGetInstanceProcAddr((VkInstance)instance,
186  "vkCreateXcbSurfaceKHR");
187  VkXcbSurfaceCreateInfoKHR createInfo;
189  if(!vkCreateXcbSurfaceKHR)
190  {
191  SDL_SetError(VK_KHR_XCB_SURFACE_EXTENSION_NAME
192  " extension is not enabled in the Vulkan instance.");
193  return SDL_FALSE;
194  }
195  SDL_zero(createInfo);
197  createInfo.connection = videoData->vulkan_XGetXCBConnection(videoData->display);
198  if(!createInfo.connection)
199  {
200  SDL_SetError("XGetXCBConnection failed");
201  return SDL_FALSE;
202  }
203  createInfo.window = (xcb_window_t)windowData->xwindow;
204  result = vkCreateXcbSurfaceKHR(instance, &createInfo,
205  NULL, surface);
206  if(result != VK_SUCCESS)
207  {
208  SDL_SetError("vkCreateXcbSurfaceKHR failed: %s", SDL_Vulkan_GetResultString(result));
209  return SDL_FALSE;
210  }
211  return SDL_TRUE;
212  }
213  else
214  {
215  PFN_vkCreateXlibSurfaceKHR vkCreateXlibSurfaceKHR =
216  (PFN_vkCreateXlibSurfaceKHR)vkGetInstanceProcAddr((VkInstance)instance,
217  "vkCreateXlibSurfaceKHR");
218  VkXlibSurfaceCreateInfoKHR createInfo;
220  if(!vkCreateXlibSurfaceKHR)
221  {
222  SDL_SetError(VK_KHR_XLIB_SURFACE_EXTENSION_NAME
223  " extension is not enabled in the Vulkan instance.");
224  return SDL_FALSE;
225  }
226  SDL_zero(createInfo);
228  createInfo.dpy = videoData->display;
229  createInfo.window = (xcb_window_t)windowData->xwindow;
230  result = vkCreateXlibSurfaceKHR(instance, &createInfo,
231  NULL, surface);
232  if(result != VK_SUCCESS)
233  {
234  SDL_SetError("vkCreateXlibSurfaceKHR failed: %s", SDL_Vulkan_GetResultString(result));
235  return SDL_FALSE;
236  }
237  return SDL_TRUE;
238  }
239 }
240 
241 #endif
242 
243 /* vim: set ts=4 sw=4 expandtab: */
#define SDL_strlcpy
#define VK_KHR_SURFACE_EXTENSION_NAME
Definition: vulkan.h:3416
struct SDL_VideoDevice::@35 vulkan_config
GLuint64EXT * result
GLuint GLuint * names
GLuint GLuint GLsizei count
Definition: SDL_opengl.h:1571
struct wl_display * display
EGLSurface surface
Definition: eglext.h:248
VKAPI_ATTR PFN_vkVoidFunction VKAPI_CALL vkGetInstanceProcAddr(VkInstance instance, const char *pName)
uint32_t Uint32
Definition: SDL_stdinc.h:181
#define SDL_LoadObject
#define SDL_UnloadObject
PFN_vkVoidFunction(VKAPI_PTR * PFN_vkGetInstanceProcAddr)(VkInstance instance, const char *pName)
Definition: vulkan.h:2484
#define VK_NULL_HANDLE
Definition: vulkan.h:49
VkResult
Definition: vulkan.h:122
static SDL_VideoDevice * _this
Definition: SDL_video.c:121
char loader_path[256]
Definition: SDL_sysvideo.h:371
#define _THIS
#define SDL_free
#define SDL_zero(x)
Definition: SDL_stdinc.h:416
#define SDL_getenv
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
#define NULL
Definition: begin_code.h:164
SDL_bool
Definition: SDL_stdinc.h:139
#define SDL_SetError
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
PFN_vkEnumerateInstanceExtensionProperties vkEnumerateInstanceExtensionProperties
Definition: SDL_sysvideo.h:369
The type used to identify a window.
Definition: SDL_sysvideo.h:73
PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr
Definition: SDL_sysvideo.h:368
#define SDL_arraysize(array)
Definition: SDL_stdinc.h:93
GLsizei const GLchar *const * path
#define SDL_strcmp
void * SDL_LoadFunction(void *handle, const char *name)
void * driverdata
Definition: SDL_sysvideo.h:111
VkResult(VKAPI_PTR * PFN_vkEnumerateInstanceExtensionProperties)(const char *pLayerName, uint32_t *pPropertyCount, VkExtensionProperties *pProperties)
Definition: vulkan.h:2488
void * loader_handle
Definition: SDL_sysvideo.h:372