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Add Fullscreen Support

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This commit is contained in:
TheBrokenRail 2020-09-26 16:44:39 -04:00
parent e0fcc910c1
commit 61f7d99390
1 changed files with 76 additions and 19 deletions
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95
mods/src/compat.c
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@ -16,6 +16,7 @@ static EGLConfig egl_config;
static int window_loaded = 0;
static EGLContext egl_context;
static EGLSurface egl_surface;
static SDL_Surface *sdl_surface;
HOOK(eglGetDisplay, EGLDisplay, (__attribute__((unused)) NativeDisplayType native_display)) {
// Handled In ensure_x11_window()
@ -100,10 +101,13 @@ EGLint const set_attrib_list[] = {
EGL_NONE
};
#define WINDOW_VIDEO_FLAGS SDL_RESIZABLE
#define FULLSCREEN_VIDEO_FLAGS SDL_FULLSCREEN
// Init EGL
HOOK(SDL_WM_SetCaption, void, (const char *title, const char *icon)) {
ensure_SDL_SetVideoMode();
(*real_SDL_SetVideoMode)(848, 480, 32, 16);
sdl_surface = (*real_SDL_SetVideoMode)(848, 480, 32, WINDOW_VIDEO_FLAGS);
ensure_SDL_WM_SetCaption();
(*real_SDL_WM_SetCaption)(title, icon);
@ -133,34 +137,87 @@ HOOK(SDL_WM_SetCaption, void, (const char *title, const char *icon)) {
}
HOOK(eglSwapBuffers, EGLBoolean, (__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLSurface surface)) {
ensure_x11_window();
ensure_eglSwapBuffers();
EGLBoolean ret = (*real_eglSwapBuffers)(egl_display, egl_surface);
return ret;
}
static void resize(int width, int height, int fullscreen) {
fprintf(stderr, "W: %i H: %i FS: %i\n", width, height, fullscreen);
Uint32 flags = fullscreen ? FULLSCREEN_VIDEO_FLAGS : WINDOW_VIDEO_FLAGS;
ensure_SDL_SetVideoMode();
sdl_surface = (*real_SDL_SetVideoMode)(width, height, 32, flags);
// OpenGL state modification for resizing
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glOrthox(0, width, 0, height, -1, 1);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glClear(GL_COLOR_BUFFER_BIT);
glLoadIdentity();
}
static int is_fullscreen = 0;
static int old_width = 0;
static int old_height = 0;
static void push_resize_event(int width, int height) {
SDL_ResizeEvent resize;
resize.type = SDL_VIDEORESIZE;
resize.w = width;
resize.h = height;
SDL_Event event;
event.type = SDL_VIDEORESIZE;
event.resize = resize;
SDL_PushEvent(&event);
}
static void toggle_fullscreen() {
if (is_fullscreen) {
push_resize_event(old_width, old_height);
old_width = 0;
old_height = 0;
} else {
old_width = sdl_surface->w;
old_height = sdl_surface->h;
Screen *screen = DefaultScreenOfDisplay(x11_display);
push_resize_event(WidthOfScreen(screen), HeightOfScreen(screen));
}
is_fullscreen = !is_fullscreen;
}
HOOK(SDL_PollEvent, int, (SDL_Event *event)) {
// Poll Events
ensure_SDL_PollEvent();
int ret = (*real_SDL_PollEvent)(event);
// Resize EGL
if (event != NULL && event->type == SDL_VIDEORESIZE) {
ensure_SDL_SetVideoMode();
(*real_SDL_SetVideoMode)(event->resize.w, event->resize.h, 32, 16);
// OpenGL state modification for resizing
glViewport(0, 0, event->resize.w, event->resize.h);
glMatrixMode(GL_PROJECTION);
glOrthox(0, event->resize.w, 0, event->resize.h, -1, 1);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glClear(GL_COLOR_BUFFER_BIT);
glLoadIdentity();
// Resize EGL
if (event != NULL) {
int handled = 0;
if (event->type == SDL_VIDEORESIZE) {
resize(event->resize.w, event->resize.h, is_fullscreen);
handled = 1;
} else if (event->type == SDL_KEYDOWN && event->key.keysym.sym == SDLK_F11) {
toggle_fullscreen();
handled = 1;
}
if (handled) {
// Event Was Handled
return SDL_PollEvent(event);
}
}
return ret;
}