mirror of https://github.com/BOINC/boinc.git
138 lines
3.2 KiB
C
138 lines
3.2 KiB
C
#include "x_opengl.h"
|
|
#include <stdio.h>
|
|
|
|
#ifdef HAVE_GL
|
|
#include <GL/glx.h>
|
|
#include <GL/gl.h>
|
|
#include <GL/glu.h>
|
|
|
|
#include "graphics_api.h"
|
|
|
|
void process_input(Display *dpy);
|
|
void refresh( void );
|
|
int DrawGLScene(GLvoid);
|
|
GLvoid buildFont(GLvoid);
|
|
|
|
extern int ok_to_draw;
|
|
int win_open;
|
|
GLuint main_font;
|
|
Display *dpy;
|
|
Window win;
|
|
|
|
static Bool WaitForNotify(Display *d,XEvent *e,char *arg) {
|
|
return(e->type == MapNotify) && (e->xmap.window == (Window)arg);
|
|
}
|
|
|
|
void *p_graphics_loop( void *duff ) {
|
|
XVisualInfo *vi;
|
|
Colormap cmap;
|
|
XSetWindowAttributes swa;
|
|
GLXContext cx;
|
|
XEvent event;
|
|
GRAPHICS_INFO *gfx;
|
|
int attributeList[] = {GLX_RGBA, GLX_DOUBLEBUFFER,
|
|
GLX_GREEN_SIZE, 4, GLX_BLUE_SIZE, 4, GLX_DEPTH_SIZE, 16, None};
|
|
|
|
gfx = (GRAPHICS_INFO *)duff;
|
|
|
|
/* get a connection */
|
|
dpy = XOpenDisplay(0);
|
|
|
|
if (dpy == NULL) {
|
|
printf("couldn't open display\n");
|
|
return 0;
|
|
}
|
|
|
|
/* get an appropriate visual */
|
|
vi = glXChooseVisual(dpy,DefaultScreen(dpy),attributeList);
|
|
if (vi == NULL) {
|
|
printf("couldn't find the visual \n");
|
|
return 0;
|
|
}
|
|
|
|
/* create a GLX context */
|
|
if (!(cx = glXCreateContext(dpy,vi,0,GL_FALSE))) {
|
|
fprintf(stderr, "glXGetContext failed!\n");
|
|
return 0;
|
|
}
|
|
|
|
/* create color map */
|
|
if (!(cmap = XCreateColormap(dpy,RootWindow(dpy,vi->screen),
|
|
vi->visual,AllocNone)))
|
|
{
|
|
fprintf(stderr, "XCreateColormap failed!\n");
|
|
return 0;
|
|
}
|
|
|
|
/* create window */
|
|
swa.colormap = cmap;
|
|
swa.border_pixel = 0;
|
|
swa.event_mask = StructureNotifyMask;
|
|
win = XCreateWindow(dpy,RootWindow(dpy,vi->screen),0,0,gfx->xsize,gfx->ysize,0,vi->depth, InputOutput,vi->visual,CWBorderPixel|CWColormap|CWEventMask, &swa);
|
|
XMapWindow(dpy,win);
|
|
XIfEvent(dpy,&event,WaitForNotify,(char*)win);
|
|
|
|
if (!(glXMakeCurrent(dpy,win,cx)))
|
|
{
|
|
fprintf(stderr, "glXMakeCurrent failed (window)!\n");
|
|
return 0;
|
|
}
|
|
|
|
win_open = true;
|
|
buildFont();
|
|
while(1) {
|
|
process_input(dpy);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
// How do we prevent broken pipes and broken connection error messages?
|
|
//
|
|
void process_input(Display *dpy) {
|
|
XEvent event;
|
|
|
|
if( XPending(dpy) ) {
|
|
do {
|
|
|
|
XNextEvent(dpy, &event);
|
|
switch(event.type) {
|
|
case DestroyNotify:
|
|
win_open = false;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} while (XPending(dpy));
|
|
}
|
|
if (ok_to_draw && win_open) {
|
|
DrawGLScene();
|
|
glXSwapBuffers(dpy,win);
|
|
ok_to_draw = 0;
|
|
}
|
|
}
|
|
|
|
GLvoid buildFont(GLvoid)
|
|
{
|
|
XFontStruct *font;
|
|
|
|
main_font = glGenLists(256); /* storage for 256 characters */
|
|
/* load a font with a specific name in "Host Portable Character Encoding" */
|
|
/*font = XLoadQueryFont(dpy,
|
|
"-*-helvetica-bold-r-normal--24-*-*-*-p-*-iso8859-1");*/
|
|
/* this really *should* be available on every X Window System...*/
|
|
font = XLoadQueryFont(dpy, "fixed");
|
|
if (font == NULL)
|
|
{
|
|
printf("Problems loading fonts :-(\n");
|
|
return; // exit(1);
|
|
}
|
|
/* build 256 display lists out of our font */
|
|
glXUseXFont(font->fid, 0, 256, main_font);
|
|
/* free our XFontStruct since we have our display lists */
|
|
XFreeFont(dpy, font);
|
|
}
|
|
|
|
#endif
|
|
|