arch/ogl/glx.c

   1 /* $Id: glx.c,v 1.6 2004-05-20 02:15:15 btb Exp $ */
   2 /*
   3  *
   4  * opengl platform specific functions for GLX - Added 9/15/99 Matthew Mueller
   5  *
   6  *
   7  */
   8
   9 #ifdef HAVE_CONFIG_H
  10 #include <conf.h>
  11 #endif
  12
  13 #include <X11/Xlib.h>
  14 #include <GL/glx.h>
  15 #include <string.h>
  16 #include "internal.h"
  17 #include "vers_id.h"
  18 #include "error.h"
  19 #include "event.h"
  20 #include "mono.h"
  21 #include "u_mem.h"
  22 #ifdef XFREE86_DGA
  23 #include <X11/extensions/xf86dga.h>
  24 #include <X11/extensions/xf86vmode.h>
  25 #endif
  26
  27
  28 #include <X11/Xatom.h>
  29
  30 //#define HAVE_MOTIF
  31 #ifdef HAVE_MOTIF
  32
  33 #include <X11/Xm/MwmUtil.h>
  34
  35 #else
  36
  37 /* bit definitions for MwmHints.flags */
  38 #define MWM_HINTS_FUNCTIONS (1L << 0)
  39 #define MWM_HINTS_DECORATIONS (1L << 1)
  40 #define MWM_HINTS_INPUT_MODE (1L << 2)
  41 #define MWM_HINTS_STATUS (1L << 3)
  42
  43 /* bit definitions for MwmHints.functions */
  44 #define MWM_FUNC_ALL            (1L << 0)
  45 #define MWM_FUNC_RESIZE         (1L << 1)
  46 #define MWM_FUNC_MOVE           (1L << 2)
  47 #define MWM_FUNC_MINIMIZE       (1L << 3)
  48 #define MWM_FUNC_MAXIMIZE       (1L << 4)
  49 #define MWM_FUNC_CLOSE          (1L << 5)
  50
  51
  52 /* bit definitions for MwmHints.decorations */
  53 #define MWM_DECOR_ALL  (1L << 0)
  54 #define MWM_DECOR_BORDER (1L << 1)
  55 #define MWM_DECOR_RESIZEH (1L << 2)
  56 #define MWM_DECOR_TITLE  (1L << 3)
  57 #define MWM_DECOR_MENU  (1L << 4)
  58 #define MWM_DECOR_MINIMIZE (1L << 5)
  59 #define MWM_DECOR_MAXIMIZE (1L << 6)
  60
  61 typedef struct
  62 {
  63         unsigned long flags;
  64         unsigned long functions;
  65         unsigned long decorations;
  66         long          inputMode;
  67         unsigned long status;
  68 } PropMotifWmHints;
  69
  70 #define PROP_MOTIF_WM_HINTS_ELEMENTS 5
  71
  72 #endif
  73
  74
  75
  76 /*
  77  * Specify which Motif window manager border decorations to put on a * top-level window.  For example, you can specify that
  78  a window is not * resizabe, or omit the titlebar, or completely remove all decorations. * Input:  dpy - the X display
  79  *        w - the X window
  80  *        flags - bitwise-OR of the MWM_DECOR_xxx symbols in
  81  X11/Xm/MwmUtil.h
  82  *                indicating what decoration elements to enable.  Zero would
  83  *                be no decoration.
  84  */
  85 void set_mwm_border( Display *dpy, Window w, unsigned long dflags,unsigned long fflags ) {
  86         PropMotifWmHints motif_hints;
  87         Atom prop, proptype;
  88
  89         /* setup the property */
  90         motif_hints.flags = MWM_HINTS_DECORATIONS|MWM_HINTS_FUNCTIONS;
  91         motif_hints.decorations = dflags;
  92         motif_hints.functions = fflags;
  93
  94         /* get the atom for the property */
  95         prop = XInternAtom( dpy, "_MOTIF_WM_HINTS", True );   if (!prop) {
  96                 mprintf((0,"set_mwm_border: prop==0\n"));
  97                 /* something went wrong! */
  98                 return;
  99         }
 100
 101         /* not sure this is correct, seems to work, XA_WM_HINTS didn't work */   proptype = prop;
 102
 103         XChangeProperty( dpy, w, /* display, window */ prop, proptype, /* property, type */
 104                         32, /* format: 32-bit datums */ PropModeReplace, /* mode */
 105                         (unsigned char *) &motif_hints, /* data */ PROP_MOTIF_WM_HINTS_ELEMENTS /* nelements */);
 106 }
 107
 108 int glx_erbase,glx_evbase;
 109 Display *dpy;
 110 XSetWindowAttributes swa;
 111 Window win;
 112 XVisualInfo *visinfo;
 113 GLXContext glxcontext;
 114 Pixmap blankpixmap=None;
 115 Cursor blankcursor=None;
 116
 117
 118 void set_wm_hints(int fullscreen){
 119         XSizeHints *hints=NULL;
 120
 121
 122 //      return;//seems screwed.
 123         if (!hints) hints=XAllocSizeHints();
 124         hints->width=hints->min_width=hints->max_width=hints->base_width=grd_curscreen->sc_w;
 125         hints->height=hints->min_height=hints->max_height=hints->base_height=grd_curscreen->sc_h;
 126         hints->flags=PSize|PMinSize|PMaxSize|PBaseSize;
 127 //      hints->min_width=hints->max_width=grd_curscreen->sc_w;
 128 //      hints->min_height=hints->max_height=grd_curscreen->sc_h;
 129 //      hints->flags=PMinSize|PMaxSize;
 130         XSetWMNormalHints(dpy,win,hints);
 131         XFree(hints);
 132         if (fullscreen){
 133                 set_mwm_border(dpy,win,0,0);
 134         }else{
 135                 set_mwm_border(dpy,win,MWM_DECOR_TITLE|MWM_DECOR_BORDER,MWM_FUNC_MOVE|MWM_FUNC_CLOSE);
 136         }
 137 }
 138
 139 static int attribs[]={GLX_RGBA,GLX_DOUBLEBUFFER,GLX_DEPTH_SIZE,0,GLX_STENCIL_SIZE,0,
 140         GLX_ACCUM_RED_SIZE,0,GLX_ACCUM_GREEN_SIZE,0,GLX_ACCUM_BLUE_SIZE,0,GLX_ACCUM_ALPHA_SIZE,0,None};
 141
 142 void ogl_do_fullscreen_internal(void){
 143 //      ogl_smash_texture_list_internal();//not needed
 144         if (ogl_fullscreen){
 145                 set_wm_hints(1);
 146                 XMoveWindow(dpy,win,0,0);
 147                 //                      XDefineCursor(dpy,win,blankcursor);
 148                 //XGrabPointer(dpy,win,0,swa.event_mask,GrabModeAsync,GrabModeAsync,win,blankcursor,CurrentTime);
 149                 XGrabPointer(dpy,win,1,ButtonPressMask | ButtonReleaseMask | PointerMotionMask,GrabModeAsync,GrabModeAsync,win,blankcursor,CurrentTime);
 150                 //                      XGrabKeyboard(dpy,win,1,GrabModeAsync,GrabModeAsync,CurrentTime);//grabbing keyboard doesn't seem to do much good anyway.
 151
 152 #ifdef XFREE86_DGA
 153                 //make ogl_fullscreen
 154                 //can you even do this with DGA ?  just resizing with ctrl-alt-(-/+) caused X to die a horrible death.
 155                 //might have to kill the window/context/whatever first?  HRm.
 156 #endif
 157         }else{
 158                 set_wm_hints(0);
 159                 //                      XUndefineCursor(dpy,win);
 160                 XUngrabPointer(dpy,CurrentTime);
 161                 //                      XUngrabKeyboard(dpy,CurrentTime);
 162 #ifdef XFREE86_DGA
 163                 //return to normal
 164 #endif
 165         }
 166 }
 167
 168 int ogl_setbrightness_internal(void)
 169 {
 170         return -1; // TODO: not yet implemented
 171 }
 172
 173 inline void ogl_swap_buffers_internal(void){
 174         glXSwapBuffers(dpy,win);
 175 }
 176 int ogl_init_window(int x, int y){
 177         if (gl_initialized){
 178                 XResizeWindow(dpy,win,x,y);
 179                 set_wm_hints(ogl_fullscreen);
 180
 181         }else {
 182                 glxcontext=glXCreateContext(dpy,visinfo,0,GL_TRUE);
 183
 184                 //create colormap
 185                 swa.colormap=XCreateColormap(dpy,RootWindow(dpy,visinfo->screen),visinfo->visual,AllocNone);
 186                 //create window
 187                 swa.border_pixel=0;
 188                 swa.event_mask=ExposureMask | StructureNotifyMask | KeyPressMask | KeyReleaseMask| ButtonPressMask | ButtonReleaseMask | PointerMotionMask;
 189                 //win = XCreateWindow(dpy,RootWindow(dpy,visinfo->screen),0,0,x,y,0,visinfo->depth,InputOutput,visinfo->visual,CWBorderPixel|CWColormap|CWEventMask,&swa);
 190                 win = XCreateWindow(dpy,RootWindow(dpy,visinfo->screen),0,0,x,y,0,visinfo->depth,InputOutput,visinfo->visual,CWColormap|CWEventMask,&swa);
 191
 192                 XStoreName(dpy,win,DESCENT_VERSION);
 193 //              XStoreName(dpy,win,"agry");
 194
 195                 XMapWindow(dpy,win);
 196
 197                 glXMakeCurrent(dpy,win,glxcontext);
 198
 199                 set_wm_hints(ogl_fullscreen);
 200
 201                 gl_initialized=1;
 202
 203                 {
 204                         XColor blankcolor;
 205                         unsigned char *blankdata;
 206                         int w,h;
 207                         XQueryBestCursor(dpy,win,1,1,&w,&h);
 208 //                      mprintf((0,"bestcursor %ix%i\n",w,h));
 209                         blankdata=d_malloc(w*h/8);
 210                         memset(blankdata,0,w*h/8);
 211                         memset(&blankcolor,0,sizeof(XColor));
 212                         blankpixmap=XCreateBitmapFromData(dpy,win,blankdata,w,h);
 213                         blankcursor=XCreatePixmapCursor(dpy,blankpixmap,blankpixmap,&blankcolor,&blankcolor,w,h);
 214                         d_free(blankdata);
 215 //                      sleep(1);
 216                 }
 217
 218                 if (ogl_fullscreen)
 219                         ogl_do_fullscreen_internal();
 220 //                      gr_do_fullscreen(ogl_fullscreen);
 221         }
 222 #ifdef GII_XWIN
 223         init_gii_xwin(dpy,win);
 224 #endif
 225         return 0;
 226 }
 227 void ogl_destroy_window(void){
 228         if (gl_initialized){
 229                 glXDestroyContext(dpy,glxcontext);
 230                 XDestroyWindow(dpy,win);
 231                 XFreeColormap(dpy,swa.colormap);
 232                 gl_initialized=0;
 233         }
 234         return;
 235 }
 236 void ogl_init(void){
 237         dpy=XOpenDisplay(0);
 238         if(!dpy)
 239                 Error("no display\n");
 240         else if (glXQueryExtension(dpy,&glx_erbase,&glx_evbase)==False)
 241                 Error("no glx\n");
 242         else if (!(visinfo = glXChooseVisual(dpy,DefaultScreen(dpy),attribs)))
 243                 Error("no visual\n");
 244 }
 245 void ogl_close(void){
 246         if (ogl_fullscreen){
 247                 ogl_fullscreen=0;
 248                 ogl_do_fullscreen_internal();
 249         }
 250         ogl_destroy_window();
 251         if (blankcursor!=None){
 252                 XFreeCursor(dpy,blankcursor);
 253                 XFreePixmap(dpy,blankpixmap);
 254         }
 255         XCloseDisplay(dpy);
 256 }