SDL  2.0
SDL_waylandvulkan.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 
22 /*
23  * @author Mark Callow, www.edgewise-consulting.com. Based on Jacob Lifshay's
24  * SDL_x11vulkan.c.
25  */
26 
27 #include "../../SDL_internal.h"
28 
29 #if SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_WAYLAND
30 
31 #include "SDL_waylandvideo.h"
32 #include "SDL_waylandwindow.h"
33 #include "SDL_assert.h"
34 
35 #include "SDL_loadso.h"
36 #include "SDL_waylandvulkan.h"
37 #include "SDL_syswm.h"
38 
39 int Wayland_Vulkan_LoadLibrary(_THIS, const char *path)
40 {
41  VkExtensionProperties *extensions = NULL;
42  Uint32 i, extensionCount = 0;
43  SDL_bool hasSurfaceExtension = SDL_FALSE;
44  SDL_bool hasWaylandSurfaceExtension = SDL_FALSE;
47  return SDL_SetError("Vulkan already loaded");
48 
49  /* Load the Vulkan loader library */
50  if(!path)
51  path = SDL_getenv("SDL_VULKAN_LIBRARY");
52  if(!path)
53  path = "libvulkan.so.1";
56  return -1;
59  vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)SDL_LoadFunction(
60  _this->vulkan_config.loader_handle, "vkGetInstanceProcAddr");
61  if(!vkGetInstanceProcAddr)
62  goto fail;
63  _this->vulkan_config.vkGetInstanceProcAddr = (void *)vkGetInstanceProcAddr;
66  VK_NULL_HANDLE, "vkEnumerateInstanceExtensionProperties");
68  goto fail;
69  extensions = SDL_Vulkan_CreateInstanceExtensionsList(
72  &extensionCount);
73  if(!extensions)
74  goto fail;
75  for(i = 0; i < extensionCount; i++)
76  {
77  if(SDL_strcmp(VK_KHR_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
78  hasSurfaceExtension = SDL_TRUE;
79  else if(SDL_strcmp(VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
80  hasWaylandSurfaceExtension = SDL_TRUE;
81  }
82  SDL_free(extensions);
83  if(!hasSurfaceExtension)
84  {
85  SDL_SetError("Installed Vulkan doesn't implement the "
86  VK_KHR_SURFACE_EXTENSION_NAME " extension");
87  goto fail;
88  }
89  else if(!hasWaylandSurfaceExtension)
90  {
91  SDL_SetError("Installed Vulkan doesn't implement the "
92  VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME "extension");
93  goto fail;
94  }
95  return 0;
96 
97 fail:
100  return -1;
101 }
102 
103 void Wayland_Vulkan_UnloadLibrary(_THIS)
104 {
106  {
109  }
110 }
111 
112 SDL_bool Wayland_Vulkan_GetInstanceExtensions(_THIS,
114  unsigned *count,
115  const char **names)
116 {
117  static const char *const extensionsForWayland[] = {
118  VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME
119  };
121  {
122  SDL_SetError("Vulkan is not loaded");
123  return SDL_FALSE;
124  }
125  return SDL_Vulkan_GetInstanceExtensions_Helper(
126  count, names, SDL_arraysize(extensionsForWayland),
127  extensionsForWayland);
128 }
129 
130 SDL_bool Wayland_Vulkan_CreateSurface(_THIS,
131  SDL_Window *window,
132  VkInstance instance,
133  VkSurfaceKHR *surface)
134 {
135  SDL_WindowData *windowData = (SDL_WindowData *)window->driverdata;
136  PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr =
138  PFN_vkCreateWaylandSurfaceKHR vkCreateWaylandSurfaceKHR =
139  (PFN_vkCreateWaylandSurfaceKHR)vkGetInstanceProcAddr(
140  (VkInstance)instance,
141  "vkCreateWaylandSurfaceKHR");
142  VkWaylandSurfaceCreateInfoKHR createInfo;
144 
146  {
147  SDL_SetError("Vulkan is not loaded");
148  return SDL_FALSE;
149  }
150 
151  if(!vkCreateWaylandSurfaceKHR)
152  {
153  SDL_SetError(VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME
154  " extension is not enabled in the Vulkan instance.");
155  return SDL_FALSE;
156  }
157  SDL_zero(createInfo);
159  createInfo.pNext = NULL;
160  createInfo.flags = 0;
161  createInfo.display = windowData->waylandData->display;
162  createInfo.surface = windowData->surface;
163  result = vkCreateWaylandSurfaceKHR(instance, &createInfo,
164  NULL, surface);
165  if(result != VK_SUCCESS)
166  {
167  SDL_SetError("vkCreateWaylandSurfaceKHR failed: %s",
168  SDL_Vulkan_GetResultString(result));
169  return SDL_FALSE;
170  }
171  return SDL_TRUE;
172 }
173 
174 #endif
175 
176 /* 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
SDL_Surface * surface
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
SDL_VideoData * waylandData
#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