SDL  2.0
SDL_x11opengles.c
Go to the documentation of this file.
1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2019 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_x11video.h"
26 #include "SDL_x11opengles.h"
27 #include "SDL_x11opengl.h"
28 
29 /* EGL implementation of SDL OpenGL support */
30 
31 int
32 X11_GLES_LoadLibrary(_THIS, const char *path)
33 {
35 
36  /* If the profile requested is not GL ES, switch over to X11_GL functions */
38  #if SDL_VIDEO_OPENGL_GLX
39  X11_GLES_UnloadLibrary(_this);
40  _this->GL_LoadLibrary = X11_GL_LoadLibrary;
41  _this->GL_GetProcAddress = X11_GL_GetProcAddress;
42  _this->GL_UnloadLibrary = X11_GL_UnloadLibrary;
43  _this->GL_CreateContext = X11_GL_CreateContext;
44  _this->GL_MakeCurrent = X11_GL_MakeCurrent;
45  _this->GL_SetSwapInterval = X11_GL_SetSwapInterval;
46  _this->GL_GetSwapInterval = X11_GL_GetSwapInterval;
47  _this->GL_SwapWindow = X11_GL_SwapWindow;
48  _this->GL_DeleteContext = X11_GL_DeleteContext;
49  return X11_GL_LoadLibrary(_this, path);
50  #else
51  return SDL_SetError("SDL not configured with OpenGL/GLX support");
52  #endif
53  }
54 
55  return SDL_EGL_LoadLibrary(_this, path, (NativeDisplayType) data->display, 0);
56 }
57 
58 XVisualInfo *
59 X11_GLES_GetVisual(_THIS, Display * display, int screen)
60 {
61 
62  XVisualInfo *egl_visualinfo = NULL;
63  EGLint visual_id;
64  XVisualInfo vi_in;
65  int out_count;
66 
67  if (!_this->egl_data) {
68  /* The EGL library wasn't loaded, SDL_GetError() should have info */
69  return NULL;
70  }
71 
72  if (_this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display,
73  _this->egl_data->egl_config,
75  &visual_id) == EGL_FALSE || !visual_id) {
76  /* Use the default visual when all else fails */
77  vi_in.screen = screen;
78  egl_visualinfo = X11_XGetVisualInfo(display,
79  VisualScreenMask,
80  &vi_in, &out_count);
81  } else {
82  vi_in.screen = screen;
83  vi_in.visualid = visual_id;
84  egl_visualinfo = X11_XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &vi_in, &out_count);
85  }
86 
87  return egl_visualinfo;
88 }
89 
91 X11_GLES_CreateContext(_THIS, SDL_Window * window)
92 {
94  SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
95  Display *display = data->videodata->display;
96 
97  X11_XSync(display, False);
98  context = SDL_EGL_CreateContext(_this, data->egl_surface);
99  X11_XSync(display, False);
100 
101  return context;
102 }
103 
104 SDL_EGL_SwapWindow_impl(X11)
105 SDL_EGL_MakeCurrent_impl(X11)
106 
107 #endif /* SDL_VIDEO_DRIVER_X11 && SDL_VIDEO_OPENGL_EGL */
108 
109 /* vi: set ts=4 sw=4 expandtab: */
screen
SDL_Renderer * screen
Definition: testgamecontroller.c:64
SDL_VideoDevice::driverdata
void * driverdata
Definition: SDL_sysvideo.h:381
SDL_x11video.h
NULL
#define NULL
Definition: begin_code.h:167
SDL_x11opengl.h
SDL_WindowData
Definition: SDL_androidwindow.h:38
SDL_VideoDevice::profile_mask
int profile_mask
Definition: SDL_sysvideo.h:346
path
GLsizei const GLchar *const * path
Definition: SDL_opengl_glext.h:3730
EGL_NATIVE_VISUAL_ID
#define EGL_NATIVE_VISUAL_ID
Definition: egl.h:93
data
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
SDL_Window
The type used to identify a window.
Definition: SDL_sysvideo.h:73
SDL_VideoDevice::gl_config
struct SDL_VideoDevice::@263 gl_config
context
static screen_context_t context
Definition: video.c:25
_this
static SDL_VideoDevice * _this
Definition: SDL_video.c:121
NativeDisplayType
EGLNativeDisplayType NativeDisplayType
Definition: eglplatform.h:110
window
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
SDL_GL_CONTEXT_PROFILE_ES
@ SDL_GL_CONTEXT_PROFILE_ES
Definition: SDL_video.h:233
_THIS
#define _THIS
Definition: SDL_alsa_audio.h:31
SDL_x11opengles.h
SDL_VideoData::display
struct wl_display * display
Definition: SDL_waylandvideo.h:50
SDL_VideoDevice::GL_SetSwapInterval
int(* GL_SetSwapInterval)(_THIS, int interval)
Definition: SDL_sysvideo.h:261
SDL_GLContext
void * SDL_GLContext
An opaque handle to an OpenGL context.
Definition: SDL_video.h:193
EGLint
khronos_int32_t EGLint
Definition: eglplatform.h:122
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
SDL_VideoDevice::GL_MakeCurrent
int(* GL_MakeCurrent)(_THIS, SDL_Window *window, SDL_GLContext context)
Definition: SDL_sysvideo.h:259
SDL_VideoDevice::GL_LoadLibrary
int(* GL_LoadLibrary)(_THIS, const char *path)
Definition: SDL_sysvideo.h:255
SDL_VideoDevice::GL_UnloadLibrary
void(* GL_UnloadLibrary)(_THIS)
Definition: SDL_sysvideo.h:257
SDL_VideoDevice::GL_CreateContext
SDL_GLContext(* GL_CreateContext)(_THIS, SDL_Window *window)
Definition: SDL_sysvideo.h:258
SDL_VideoDevice::GL_GetSwapInterval
int(* GL_GetSwapInterval)(_THIS)
Definition: SDL_sysvideo.h:262
SDL_VideoDevice::GL_SwapWindow
int(* GL_SwapWindow)(_THIS, SDL_Window *window)
Definition: SDL_sysvideo.h:263
SDL_WindowData::videodata
struct SDL_VideoData * videodata
Definition: SDL_cocoawindow.h:121
SDL_VideoDevice::GL_GetProcAddress
void *(* GL_GetProcAddress)(_THIS, const char *proc)
Definition: SDL_sysvideo.h:256
SDL_VideoDevice::GL_DeleteContext
void(* GL_DeleteContext)(_THIS, SDL_GLContext context)
Definition: SDL_sysvideo.h:264
EGL_FALSE
#define EGL_FALSE
Definition: egl.h:84
SDL_VideoData
Definition: SDL_androidvideo.h:36