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zTSO
- Added libraries from formats and libvitaboy
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Tony Bark
parent
66ce473514
commit
5efdb29315
101 changed files with 11711 additions and 10889 deletions
234
library/libgldemo/glx.c
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234
library/libgldemo/glx.c
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/*
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libgldemo - General-purpose OpenGL demo backend
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glx.c - Copyright (c) 2012 Niotso Project <http://niotso.org/>
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Author(s): Fatbag <X-Fi6@phppoll.org>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "libgldemo.h"
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static Display *display = NULL;
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static int screen = 0;
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static Window window = 0;
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static GLXContext hrc = 0;
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static uint8_t keys[256] = {0};
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static uint8_t f11_pressed = 0;
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static uint16_t WndWidth, WndHeight;
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static uint16_t ResWidth, ResHeight;
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static int fullscreen = 0;
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void KillGLWindow()
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{
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if(hrc){
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glXMakeCurrent(display, None, NULL);
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glXDestroyContext(display, hrc);
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hrc = 0;
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}
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if(window){
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XDestroyWindow(display, window);
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window = 0;
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}
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}
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static int CreateGLWindow(const char *__restrict title, uint16_t width, uint16_t height)
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{
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int attlist[] = {
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GLX_RGBA,
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GLX_RED_SIZE, 4,
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GLX_GREEN_SIZE, 4,
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GLX_BLUE_SIZE, 4,
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GLX_DEPTH_SIZE, 16,
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GLX_DOUBLEBUFFER,
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None
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};
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XVisualInfo *visualinfo;
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Colormap cmap;
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Atom wmDelete;
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XSetWindowAttributes attr;
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int (APIENTRY *glXSwapIntervalSGIptr)(int);
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visualinfo = glXChooseVisual(display, screen, attlist);
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if(visualinfo == NULL){
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KillGLWindow();
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DemoErrorBox("Can't find a suitable pixel format.");
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return 0;
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}
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/* create a color map */
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cmap = XCreateColormap(display, RootWindow(display, visualinfo->screen), visualinfo->visual, AllocNone);
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attr.colormap = cmap;
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attr.border_pixel = 0;
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hrc = glXCreateContext(display, visualinfo, NULL, GL_TRUE);
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if(hrc == NULL){
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KillGLWindow();
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DemoErrorBox("Failed to create an OpenGL rendering context.");
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return 0;
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}
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attr.event_mask = KeyPressMask | KeyReleaseMask | StructureNotifyMask;
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if(fullscreen){
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attr.override_redirect = True;
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width = ResWidth;
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height = ResHeight;
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XWarpPointer(display, None, window, 0, 0, 0, 0, 0, 0);
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}else{
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attr.override_redirect = False;
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}
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if(!(window = XCreateWindow(display, XRootWindow(display, visualinfo->screen),
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(ResWidth - width)>>1,
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(ResHeight - height)>>1,
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width,
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height,
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0, visualinfo->depth, InputOutput, visualinfo->visual,
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CWBorderPixel | CWColormap | CWEventMask | CWOverrideRedirect, &attr)
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)){
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KillGLWindow();
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DemoErrorBox("Window creation error.");
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return 0;
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}
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WndWidth = width;
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WndHeight = height;
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XSetStandardProperties(display, window, title, title, None, NULL, 0, NULL);
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XMapRaised(display, window);
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XGrabKeyboard(display, window, True, GrabModeAsync, GrabModeAsync, CurrentTime);
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wmDelete = XInternAtom(display, "WM_DELETE_WINDOW", True);
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XSetWMProtocols(display, window, &wmDelete, 1);
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/* connect the glx-context to the window */
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glXMakeCurrent(display, window, hrc);
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XFlush(display);
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if(!Demo.InitGL()){
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KillGLWindow();
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DemoErrorBox("Initialization failed.");
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return 0;
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}
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if(!Demo.ResizeScene(width&&height ? width : 1, width&&height ? height : 1)){
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KillGLWindow();
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DemoErrorBox("Scene resize failed.");
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return 0;
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}
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glXSwapIntervalSGIptr = (int (APIENTRY *)(int)) glXGetProcAddressARB((const GLubyte *) "glXSwapIntervalSGI");
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if(glXSwapIntervalSGIptr) glXSwapIntervalSGIptr(1);
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return 1;
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}
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int main()
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{
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int dotclock;
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XF86VidModeModeLine modeline;
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struct timespec time1;
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display = XOpenDisplay(0);
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if(display == NULL){
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KillGLWindow();
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DemoErrorBox("Failed to obtain the X11 display context.");
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return 0;
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}
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XkbSetDetectableAutoRepeat(display, True, 0);
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screen = XDefaultScreen(display);
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XF86VidModeGetModeLine(display, screen, &dotclock, &modeline);
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ResWidth = modeline.hdisplay;
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ResHeight = modeline.vdisplay;
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if(Demo.Startup && !Demo.Startup())
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return -1;
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if(!CreateGLWindow(Demo.Title, Demo.Width, Demo.Height))
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return -1;
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clock_gettime(CLOCK_REALTIME, &time1);
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while(1){
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struct timespec time2;
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float TimeDelta;
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while(XPending(display)){
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XEvent event;
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XNextEvent(display, &event);
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switch(event.type){
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case ConfigureNotify:
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if(((unsigned)event.xconfigure.width != WndWidth) ||
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((unsigned)event.xconfigure.height != WndHeight)){
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WndWidth = event.xconfigure.width;
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WndHeight = event.xconfigure.height;
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Demo.ResizeScene(event.xconfigure.width, event.xconfigure.height);
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}
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break;
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case KeyPress: {
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KeySym key = XLookupKeysym(&event.xkey, 0);
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if(key <= 255)
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keys[(key + 'A' - 'a') & 255] = 1;
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else if(key == XK_Left) keys[KEY_LEFT] = 1;
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else if(key == XK_Up) keys[KEY_UP] = 1;
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else if(key == XK_Right) keys[KEY_RIGHT] = 1;
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else if(key == XK_Down) keys[KEY_DOWN] = 1;
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else{
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if(key == XK_Escape){
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KillGLWindow();
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XCloseDisplay(display);
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return (!Demo.Shutdown || Demo.Shutdown()) ? 0 : -1;
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}
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if(key == XK_F11 && !f11_pressed){
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KillGLWindow();
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fullscreen = !fullscreen;
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CreateGLWindow(Demo.Title, Demo.Width, Demo.Height);
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f11_pressed = 1;
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}
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}
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break;
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}
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case KeyRelease: {
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KeySym key = XLookupKeysym(&event.xkey, 0);
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if(key <= 255)
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keys[(key + 'A' - 'a') & 255] = 0;
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else if(key == XK_Left) keys[KEY_LEFT] = 0;
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else if(key == XK_Up) keys[KEY_UP] = 0;
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else if(key == XK_Right) keys[KEY_RIGHT] = 0;
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else if(key == XK_Down) keys[KEY_DOWN] = 0;
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else if(key == XK_F11) f11_pressed = 0;
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break;
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}
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case ClientMessage:
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if (XGetAtomName(display, event.xclient.message_type)[0] == 'W'){
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KillGLWindow();
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XCloseDisplay(display);
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return (!Demo.Shutdown || Demo.Shutdown()) ? 0 : -1;
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}
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}
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}
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/* Find the timedelta */
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clock_gettime(CLOCK_REALTIME, &time2);
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TimeDelta = (float)(time2.tv_sec - time1.tv_sec) + ((float)(time2.tv_nsec - time1.tv_nsec)) * 1e-9;
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if(TimeDelta < 0) TimeDelta = 0; /* Safe-guard in case of system delay */
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time1 = time2;
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/* Draw */
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Demo.DrawScene(TimeDelta, keys);
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glXSwapBuffers(display, window);
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}
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}
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