1 /*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2020 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_DRIVER_X11 && SDL_VIDEO_OPENGL_EGL
24
25 #include "SDL_hints.h"
26 #include "SDL_x11video.h"
27 #include "SDL_x11opengles.h"
28 #include "SDL_x11opengl.h"
29
30 /* EGL implementation of SDL OpenGL support */
31
32 int
X11_GLES_LoadLibrary(_THIS,const char * path)33 X11_GLES_LoadLibrary(_THIS, const char *path)
34 {
35 SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
36
37 /* If the profile requested is not GL ES, switch over to X11_GL functions */
38 if ((_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) &&
39 !SDL_GetHintBoolean(SDL_HINT_VIDEO_X11_FORCE_EGL, SDL_FALSE)) {
40 #if SDL_VIDEO_OPENGL_GLX
41 X11_GLES_UnloadLibrary(_this);
42 _this->GL_LoadLibrary = X11_GL_LoadLibrary;
43 _this->GL_GetProcAddress = X11_GL_GetProcAddress;
44 _this->GL_UnloadLibrary = X11_GL_UnloadLibrary;
45 _this->GL_CreateContext = X11_GL_CreateContext;
46 _this->GL_MakeCurrent = X11_GL_MakeCurrent;
47 _this->GL_SetSwapInterval = X11_GL_SetSwapInterval;
48 _this->GL_GetSwapInterval = X11_GL_GetSwapInterval;
49 _this->GL_SwapWindow = X11_GL_SwapWindow;
50 _this->GL_DeleteContext = X11_GL_DeleteContext;
51 return X11_GL_LoadLibrary(_this, path);
52 #else
53 return SDL_SetError("SDL not configured with OpenGL/GLX support");
54 #endif
55 }
56
57 return SDL_EGL_LoadLibrary(_this, path, (NativeDisplayType) data->display, 0);
58 }
59
60 XVisualInfo *
X11_GLES_GetVisual(_THIS,Display * display,int screen)61 X11_GLES_GetVisual(_THIS, Display * display, int screen)
62 {
63
64 XVisualInfo *egl_visualinfo = NULL;
65 EGLint visual_id;
66 XVisualInfo vi_in;
67 int out_count;
68
69 if (!_this->egl_data) {
70 /* The EGL library wasn't loaded, SDL_GetError() should have info */
71 return NULL;
72 }
73
74 if (_this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display,
75 _this->egl_data->egl_config,
76 EGL_NATIVE_VISUAL_ID,
77 &visual_id) == EGL_FALSE || !visual_id) {
78 /* Use the default visual when all else fails */
79 vi_in.screen = screen;
80 egl_visualinfo = X11_XGetVisualInfo(display,
81 VisualScreenMask,
82 &vi_in, &out_count);
83 } else {
84 vi_in.screen = screen;
85 vi_in.visualid = visual_id;
86 egl_visualinfo = X11_XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &vi_in, &out_count);
87 }
88
89 return egl_visualinfo;
90 }
91
92 SDL_GLContext
X11_GLES_CreateContext(_THIS,SDL_Window * window)93 X11_GLES_CreateContext(_THIS, SDL_Window * window)
94 {
95 SDL_GLContext context;
96 SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
97 Display *display = data->videodata->display;
98
99 X11_XSync(display, False);
100 context = SDL_EGL_CreateContext(_this, data->egl_surface);
101 X11_XSync(display, False);
102
103 return context;
104 }
105
106 SDL_EGL_SwapWindow_impl(X11)
107 SDL_EGL_MakeCurrent_impl(X11)
108
109 #endif /* SDL_VIDEO_DRIVER_X11 && SDL_VIDEO_OPENGL_EGL */
110
111 /* vi: set ts=4 sw=4 expandtab: */
112