Atlas - SDL_x11opengles.c
Home / ext / SDL / src / video / x11 Lines: 1 | Size: 5536 bytes [Download] [Show on GitHub] [Search similar files] [Raw] [Raw (proxy)][FILE BEGIN]1/* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2025 Sam Lantinga <[email protected]> 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 defined(SDL_VIDEO_DRIVER_X11) && defined(SDL_VIDEO_OPENGL_EGL) 24 25#include "SDL_x11video.h" 26#include "SDL_x11opengles.h" 27#include "SDL_x11opengl.h" 28#include "SDL_x11xsync.h" 29 30// EGL implementation of SDL OpenGL support 31 32bool X11_GLES_LoadLibrary(SDL_VideoDevice *_this, const char *path) 33{ 34 SDL_VideoData *data = _this->internal; 35 36 // If the profile requested is not GL ES, switch over to X11_GL functions 37 if ((_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) && 38 !SDL_GetHintBoolean(SDL_HINT_VIDEO_FORCE_EGL, false)) { 39#ifdef SDL_VIDEO_OPENGL_GLX 40 X11_GLES_UnloadLibrary(_this); 41 _this->GL_LoadLibrary = X11_GL_LoadLibrary; 42 _this->GL_GetProcAddress = X11_GL_GetProcAddress; 43 _this->GL_UnloadLibrary = X11_GL_UnloadLibrary; 44 _this->GL_CreateContext = X11_GL_CreateContext; 45 _this->GL_MakeCurrent = X11_GL_MakeCurrent; 46 _this->GL_SetSwapInterval = X11_GL_SetSwapInterval; 47 _this->GL_GetSwapInterval = X11_GL_GetSwapInterval; 48 _this->GL_SwapWindow = X11_GL_SwapWindow; 49 _this->GL_DestroyContext = X11_GL_DestroyContext; 50 return X11_GL_LoadLibrary(_this, path); 51#else 52 return SDL_SetError("SDL not configured with OpenGL/GLX support"); 53#endif 54 } 55 56 return SDL_EGL_LoadLibrary(_this, path, (NativeDisplayType)data->display, _this->gl_config.egl_platform); 57} 58 59XVisualInfo *X11_GLES_GetVisual(SDL_VideoDevice *_this, Display *display, int screen, bool transparent) 60{ 61 62 XVisualInfo *egl_visualinfo = NULL; 63 EGLint visual_id = 0; 64 XVisualInfo vi_in; 65 int out_count = 0; 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, 74 EGL_NATIVE_VISUAL_ID, 75 &visual_id) == EGL_FALSE) { 76 visual_id = 0; 77 } 78 if (visual_id != 0) { 79 vi_in.screen = screen; 80 vi_in.visualid = visual_id; 81 egl_visualinfo = X11_XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &vi_in, &out_count); 82 if (transparent && egl_visualinfo) { 83 Uint32 format = X11_GetPixelFormatFromVisualInfo(display, egl_visualinfo); 84 if (!SDL_ISPIXELFORMAT_ALPHA(format)) { 85 // not transparent! 86 X11_XFree(egl_visualinfo); 87 egl_visualinfo = NULL; 88 } 89 } 90 } 91 92 if(!egl_visualinfo) { 93 // Use the default visual when all else fails 94 vi_in.screen = screen; 95 egl_visualinfo = X11_XGetVisualInfo(display, 96 VisualScreenMask, 97 &vi_in, &out_count); 98 99 // Return the first transparent Visual 100 if (transparent) { 101 int i; 102 for (i = 0; i < out_count; i++) { 103 XVisualInfo *v = &egl_visualinfo[i]; 104 Uint32 format = X11_GetPixelFormatFromVisualInfo(display, v); 105 if (SDL_ISPIXELFORMAT_ALPHA(format)) { // found! 106 // re-request it to have a copy that can be X11_XFree'ed later 107 vi_in.screen = screen; 108 vi_in.visualid = v->visualid; 109 X11_XFree(egl_visualinfo); 110 egl_visualinfo = X11_XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &vi_in, &out_count); 111 return egl_visualinfo; 112 } 113 } 114 } 115 } 116 return egl_visualinfo; 117} 118 119SDL_GLContext X11_GLES_CreateContext(SDL_VideoDevice *_this, SDL_Window *window) 120{ 121 SDL_GLContext context; 122 SDL_WindowData *data = window->internal; 123 Display *display = data->videodata->display; 124 125 X11_XSync(display, False); 126 context = SDL_EGL_CreateContext(_this, data->egl_surface); 127 X11_XSync(display, False); 128 129 return context; 130} 131 132SDL_EGLSurface X11_GLES_GetEGLSurface(SDL_VideoDevice *_this, SDL_Window *window) 133{ 134 SDL_WindowData *data = window->internal; 135 return data->egl_surface; 136} 137 138bool X11_GLES_SwapWindow(SDL_VideoDevice *_this, SDL_Window *window) 139{ 140 const bool ret = SDL_EGL_SwapBuffers(_this, window->internal->egl_surface); \ 141 142#ifdef SDL_VIDEO_DRIVER_X11_XSYNC 143 X11_HandlePresent(window); 144#endif /* SDL_VIDEO_DRIVER_X11_XSYNC */ 145 146 return ret; 147} 148 149SDL_EGL_MakeCurrent_impl(X11) 150 151#endif // SDL_VIDEO_DRIVER_X11 && SDL_VIDEO_OPENGL_EGL 152 153[FILE END](C) 2025 0x4248 (C) 2025 4248 Media and 4248 Systems, All part of 0x4248 See LICENCE files for more information. 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