1 /* $Id: glx.c,v 1.4 2003/01/15 02:40:54 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 "ogl_init.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 */
set_mwm_border(Display * dpy,Window w,unsigned long dflags,unsigned long fflags)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
set_wm_hints(int fullscreen)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
ogl_do_fullscreen_internal(void)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
ogl_swap_buffers_internal(void)168 inline void ogl_swap_buffers_internal(void){
169 glXSwapBuffers(dpy,win);
170 }
ogl_init_window(int x,int y)171 int ogl_init_window(int x, int y){
172 if (gl_initialized){
173 XResizeWindow(dpy,win,x,y);
174 set_wm_hints(ogl_fullscreen);
175
176 }else {
177 glxcontext=glXCreateContext(dpy,visinfo,0,GL_TRUE);
178
179 //create colormap
180 swa.colormap=XCreateColormap(dpy,RootWindow(dpy,visinfo->screen),visinfo->visual,AllocNone);
181 //create window
182 swa.border_pixel=0;
183 swa.event_mask=ExposureMask | StructureNotifyMask | KeyPressMask | KeyReleaseMask| ButtonPressMask | ButtonReleaseMask | PointerMotionMask;
184 //win = XCreateWindow(dpy,RootWindow(dpy,visinfo->screen),0,0,x,y,0,visinfo->depth,InputOutput,visinfo->visual,CWBorderPixel|CWColormap|CWEventMask,&swa);
185 win = XCreateWindow(dpy,RootWindow(dpy,visinfo->screen),0,0,x,y,0,visinfo->depth,InputOutput,visinfo->visual,CWColormap|CWEventMask,&swa);
186
187 XStoreName(dpy,win,DESCENT_VERSION);
188 // XStoreName(dpy,win,"agry");
189
190 XMapWindow(dpy,win);
191
192 glXMakeCurrent(dpy,win,glxcontext);
193
194 set_wm_hints(ogl_fullscreen);
195
196 gl_initialized=1;
197
198 {
199 XColor blankcolor;
200 unsigned char *blankdata;
201 int w,h;
202 XQueryBestCursor(dpy,win,1,1,&w,&h);
203 // mprintf((0,"bestcursor %ix%i\n",w,h));
204 blankdata=d_malloc(w*h/8);
205 memset(blankdata,0,w*h/8);
206 memset(&blankcolor,0,sizeof(XColor));
207 blankpixmap=XCreateBitmapFromData(dpy,win,blankdata,w,h);
208 blankcursor=XCreatePixmapCursor(dpy,blankpixmap,blankpixmap,&blankcolor,&blankcolor,w,h);
209 d_free(blankdata);
210 // sleep(1);
211 }
212
213 if (ogl_fullscreen)
214 ogl_do_fullscreen_internal();
215 // gr_do_fullscreen(ogl_fullscreen);
216 }
217 #ifdef GII_XWIN
218 init_gii_xwin(dpy,win);
219 #endif
220 return 0;
221 }
ogl_destroy_window(void)222 void ogl_destroy_window(void){
223 if (gl_initialized){
224 glXDestroyContext(dpy,glxcontext);
225 XDestroyWindow(dpy,win);
226 XFreeColormap(dpy,swa.colormap);
227 gl_initialized=0;
228 }
229 return;
230 }
ogl_init(void)231 void ogl_init(void){
232 dpy=XOpenDisplay(0);
233 if(!dpy)
234 Error("no display\n");
235 else if (glXQueryExtension(dpy,&glx_erbase,&glx_evbase)==False)
236 Error("no glx\n");
237 else if (!(visinfo = glXChooseVisual(dpy,DefaultScreen(dpy),attribs)))
238 Error("no visual\n");
239 }
ogl_close(void)240 void ogl_close(void){
241 if (ogl_fullscreen){
242 ogl_fullscreen=0;
243 ogl_do_fullscreen_internal();
244 }
245 ogl_destroy_window();
246 if (blankcursor!=None){
247 XFreeCursor(dpy,blankcursor);
248 XFreePixmap(dpy,blankpixmap);
249 }
250 XCloseDisplay(dpy);
251 }
252