#include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdarg.h> #include <sys/time.h> #include "EGL/egl.h" #include "EGL/eglext.h" #include "eglutint.h" static struct eglut_state _eglut_state = { .api_mask = EGLUT_OPENGL_ES1_BIT, .window_width = 300, .window_height = 300, .verbose = 0, .num_windows = 0, }; struct eglut_state *_eglut = &_eglut_state; void _eglutFatal(char *format, ...) { va_list args; va_start(args, format); fprintf(stderr, "EGLUT: "); vfprintf(stderr, format, args); va_end(args); putc('\n', stderr); exit(1); } /* return current time (in milliseconds) */ int _eglutNow(void) { struct timeval tv; #ifdef __VMS (void) gettimeofday(&tv, NULL ); #else struct timezone tz; (void) gettimeofday(&tv, &tz); #endif return tv.tv_sec * 1000 + tv.tv_usec / 1000; } static void _eglutDestroyWindow(struct eglut_window *win) { if (_eglut->surface_type != EGL_PBUFFER_BIT && _eglut->surface_type != EGL_SCREEN_BIT_MESA) eglDestroySurface(_eglut->dpy, win->surface); _eglutNativeFiniWindow(win); eglDestroyContext(_eglut->dpy, win->context); } static EGLConfig _eglutChooseConfig(void) { EGLConfig config; EGLint config_attribs[32]; EGLint renderable_type, num_configs, i; i = 0; config_attribs[i++] = EGL_RED_SIZE; config_attribs[i++] = 1; config_attribs[i++] = EGL_GREEN_SIZE; config_attribs[i++] = 1; config_attribs[i++] = EGL_BLUE_SIZE; config_attribs[i++] = 1; config_attribs[i++] = EGL_DEPTH_SIZE; config_attribs[i++] = 1; config_attribs[i++] = EGL_SURFACE_TYPE; config_attribs[i++] = _eglut->surface_type; config_attribs[i++] = EGL_RENDERABLE_TYPE; renderable_type = 0x0; if (_eglut->api_mask & EGLUT_OPENGL_BIT) renderable_type |= EGL_OPENGL_BIT; if (_eglut->api_mask & (EGLUT_OPENGL_ES1_BIT | EGLUT_OPENGL_ES2_BIT)) renderable_type |= EGL_OPENGL_ES_BIT; if (_eglut->api_mask & EGLUT_OPENVG_BIT) renderable_type |= EGL_OPENVG_BIT; config_attribs[i++] = renderable_type; config_attribs[i] = EGL_NONE; if (!eglChooseConfig(_eglut->dpy, config_attribs, &config, 1, &num_configs) || !num_configs) _eglutFatal("failed to choose a config"); return config; } static struct eglut_window * _eglutCreateWindow(const char *title, int x, int y, int w, int h) { struct eglut_window *win; EGLint context_attribs[4]; EGLint api, i; win = calloc(1, sizeof(*win)); if (!win) _eglutFatal("failed to allocate window"); win->config = _eglutChooseConfig(); i = 0; context_attribs[i] = EGL_NONE; /* multiple APIs? */ api = EGL_OPENGL_ES_API; if (_eglut->api_mask & EGLUT_OPENGL_BIT) { api = EGL_OPENGL_API; } else if (_eglut->api_mask & EGLUT_OPENVG_BIT) { api = EGL_OPENVG_API; } else if (_eglut->api_mask & EGLUT_OPENGL_ES2_BIT) { context_attribs[i++] = EGL_CONTEXT_CLIENT_VERSION; context_attribs[i++] = 2; } context_attribs[i] = EGL_NONE; eglBindAPI(api); win->context = eglCreateContext(_eglut->dpy, win->config, EGL_NO_CONTEXT, context_attribs); if (!win->context) _eglutFatal("failed to create context"); _eglutNativeInitWindow(win, title, x, y, w, h); switch (_eglut->surface_type) { case EGL_WINDOW_BIT: win->surface = eglCreateWindowSurface(_eglut->dpy, win->config, win->native.u.window, NULL); break; case EGL_PIXMAP_BIT: win->surface = eglCreatePixmapSurface(_eglut->dpy, win->config, win->native.u.pixmap, NULL); break; case EGL_PBUFFER_BIT: case EGL_SCREEN_BIT_MESA: win->surface = win->native.u.surface; break; default: break; } if (win->surface == EGL_NO_SURFACE) _eglutFatal("failed to create surface"); return win; } void eglutInitAPIMask(int mask) { _eglut->api_mask = mask; } void eglutInitWindowSize(int width, int height) { _eglut->window_width = width; _eglut->window_height = height; } void eglutInit(int argc, char **argv) { int i; for (i = 1; i < argc; i++) { if (strcmp(argv[i], "-display") == 0) _eglut->display_name = argv[++i]; else if (strcmp(argv[i], "-info") == 0) { _eglut->verbose = 1; } } _eglutNativeInitDisplay(); _eglut->dpy = eglGetDisplay(_eglut->native_dpy); if (!eglInitialize(_eglut->dpy, &_eglut->major, &_eglut->minor)) _eglutFatal("failed to initialize EGL display"); _eglut->init_time = _eglutNow(); printf("EGL_VERSION = %s\n", eglQueryString(_eglut->dpy, EGL_VERSION)); } int eglutGet(int state) { int val; switch (state) { case EGLUT_ELAPSED_TIME: val = _eglutNow() - _eglut->init_time; break; default: val = -1; break; } return val; } void eglutIdleFunc(EGLUTidleCB func) { _eglut->idle_cb = func; } void eglutPostRedisplay(void) { _eglut->redisplay = 1; } void eglutMainLoop(void) { struct eglut_window *win = _eglut->current; if (!win) _eglutFatal("no window is created\n"); if (win->reshape_cb) win->reshape_cb(win->native.width, win->native.height); _eglutNativeEventLoop(); } static void _eglutFini(void) { eglTerminate(_eglut->dpy); _eglutNativeFiniDisplay(); } static void _eglutDefaultKeyboard(unsigned char key) { if (key == 27) { /* XXX it causes some bug in st/egl KMS backend */ if ( _eglut->surface_type != EGL_SCREEN_BIT_MESA) eglMakeCurrent(_eglut->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); _eglutDestroyWindow(_eglut->current); _eglutFini(); exit(0); } } int eglutCreateWindow(const char *title) { struct eglut_window *win; win = _eglutCreateWindow(title, 0, 0, _eglut->window_width, _eglut->window_height); win->index = _eglut->num_windows++; win->reshape_cb = NULL; win->display_cb = NULL; win->keyboard_cb = _eglutDefaultKeyboard; win->special_cb = NULL; if (!eglMakeCurrent(_eglut->dpy, win->surface, win->surface, win->context)) _eglutFatal("failed to make window current"); _eglut->current = win; return win->index; } int eglutGetWindowWidth(void) { struct eglut_window *win = _eglut->current; return win->native.width; } int eglutGetWindowHeight(void) { struct eglut_window *win = _eglut->current; return win->native.height; } void eglutDisplayFunc(EGLUTdisplayCB func) { struct eglut_window *win = _eglut->current; win->display_cb = func; } void eglutReshapeFunc(EGLUTreshapeCB func) { struct eglut_window *win = _eglut->current; win->reshape_cb = func; } void eglutKeyboardFunc(EGLUTkeyboardCB func) { struct eglut_window *win = _eglut->current; win->keyboard_cb = func; } void eglutSpecialFunc(EGLUTspecialCB func) { struct eglut_window *win = _eglut->current; win->special_cb = func; }