mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-23 21:02:50 +00:00
285 lines
6.4 KiB
C
285 lines
6.4 KiB
C
/*
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vid_glx.c
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OpenGL GLX video driver
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Copyright (C) 1996-1997 Id Software, Inc.
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Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se]
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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static __attribute__ ((unused)) const char rcsid[] =
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"$Id$";
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#ifdef HAVE_DLOPEN
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# include <dlfcn.h>
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#endif
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#include <X11/Xlib.h>
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#include <X11/keysym.h>
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#include <X11/cursorfont.h>
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#ifdef HAVE_DGA
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# include <X11/extensions/xf86dga.h>
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#endif
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#include "QF/cmd.h"
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#include "QF/console.h"
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#include "QF/cvar.h"
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#include "QF/input.h"
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#include "QF/qargs.h"
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#include "QF/qendian.h"
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#include "QF/sys.h"
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#include "QF/va.h"
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#include "QF/vid.h"
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#include "QF/GL/funcs.h"
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#include "QF/GL/qf_vid.h"
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#include "compat.h"
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#include "context_x11.h"
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#include "r_cvar.h"
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#include "sbar.h"
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#define WARP_WIDTH 320
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#define WARP_HEIGHT 200
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// GLXContext is a pointer to opaque data
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typedef struct __GLXcontextRec *GLXContext;
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#define GLX_RGBA 4 // true if RGBA mode
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#define GLX_DOUBLEBUFFER 5 // double buffering supported
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#define GLX_RED_SIZE 8 // number of red component bits
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#define GLX_GREEN_SIZE 9 // number of green component bits
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#define GLX_BLUE_SIZE 10 // number of blue component bits
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#define GLX_DEPTH_SIZE 12 // number of depth bits
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static GLXContext ctx = NULL;
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typedef XID GLXDrawable;
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void (* qfglXSwapBuffers) (Display *dpy, GLXDrawable drawable);
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XVisualInfo* (* qfglXChooseVisual) (Display *dpy, int screen, int *attribList);
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GLXContext (* qfglXCreateContext) (Display *dpy, XVisualInfo *vis,
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GLXContext shareList, Bool direct);
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Bool (* qfglXMakeCurrent) (Display *dpy, GLXDrawable drawable, GLXContext ctx);
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// ============================================================================
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static int use_gl_procaddress = 1;
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#if defined(HAVE_DLOPEN)
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void * (* glGetProcAddress) (const char *symbol) = NULL;
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void *
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QFGL_GetProcAddress (void *handle, const char *name)
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{
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void *glfunc = NULL;
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if (use_gl_procaddress && glGetProcAddress)
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glfunc = glGetProcAddress (name);
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if (!glfunc)
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glfunc = dlsym (handle, name);
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return glfunc;
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}
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void *
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QFGL_LoadLibrary (void)
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{
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void *handle;
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if (!(handle = dlopen (gl_driver->string, RTLD_NOW))) {
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Sys_Error ("Couldn't load OpenGL library %s: %s", gl_driver->string,
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dlerror ());
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}
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glGetProcAddress = dlsym (handle, "glXGetProcAddressARB");
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return handle;
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}
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#else
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# error "Cannot load libraries: %s was not configured with DSO support"
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// the following is to avoid other compiler errors
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void *
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QFGL_GetProcAddress (void *handle, const char *name)
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{
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return 0;
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}
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void *
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QFGL_LoadLibrary (void)
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{
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return 0;
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}
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#endif // HAVE_DLOPEN
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void
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VID_Shutdown (void)
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{
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Con_Printf ("VID_Shutdown\n");
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if (x_disp) {
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X11_RestoreVidMode ();
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X11_CloseDisplay ();
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}
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}
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static void
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GL_Init (void)
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{
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GL_Init_Common ();
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}
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void
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GL_EndRendering (void)
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{
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qfglFinish ();
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qfglXSwapBuffers (x_disp, x_win);
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Sbar_Changed ();
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}
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static void
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VID_Center_f (void) {
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X11_ForceViewPort ();
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}
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void
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VID_Init (unsigned char *palette)
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{
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int i;
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int attrib[] = {
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GLX_RGBA,
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GLX_RED_SIZE, 1,
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GLX_GREEN_SIZE, 1,
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GLX_BLUE_SIZE, 1,
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GLX_DOUBLEBUFFER,
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GLX_DEPTH_SIZE, 1,
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None
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};
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GL_Pre_Init ();
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use_gl_procaddress = 0;
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qfglXSwapBuffers = QFGL_ProcAddress (libgl_handle, "glXSwapBuffers", true);
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qfglXChooseVisual = QFGL_ProcAddress (libgl_handle, "glXChooseVisual",
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true);
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qfglXCreateContext = QFGL_ProcAddress (libgl_handle, "glXCreateContext",
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true);
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qfglXMakeCurrent = QFGL_ProcAddress (libgl_handle, "glXMakeCurrent", true);
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use_gl_procaddress = 1;
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Cmd_AddCommand ("vid_center", VID_Center_f, "Center the view port on the "
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"quake window in a virtual desktop.\n");
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VID_GetWindowSize (640, 480);
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vid.maxwarpwidth = WARP_WIDTH;
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vid.maxwarpheight = WARP_HEIGHT;
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vid.colormap8 = vid_colormap;
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vid.fullbright = 256 - LittleLong (*((int *) vid.colormap8 + 2048));
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vid.conwidth &= 0xfff8; // make it a multiple of eight
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vid.conwidth = max (vid.conwidth, 320);
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// pick a conheight that matches with correct aspect
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vid.conheight = (vid.conwidth * 3) / 4;
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if ((i = COM_CheckParm ("-conheight"))) // conheight no smaller than 200p
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vid.conheight = atoi (com_argv[i + 1]);
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vid.conheight = max (vid.conheight, 200);
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vid.height = vid.conheight = min (vid.conheight,
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(unsigned int) scr_height);
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vid.width = vid.conwidth = min (vid.conwidth, (unsigned int) scr_width);
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Con_CheckResize (); // Now that we have a window size, fix console
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X11_OpenDisplay ();
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x_visinfo = qfglXChooseVisual (x_disp, x_screen, attrib);
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if (!x_visinfo) {
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Sys_Error ("Error couldn't get an RGB, Double-buffered, Depth visual");
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}
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x_vis = x_visinfo->visual;
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X11_SetVidMode (scr_width, scr_height);
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X11_CreateWindow (scr_width, scr_height);
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X11_CreateNullCursor (); // hide mouse pointer
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XSync (x_disp, 0);
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ctx = qfglXCreateContext (x_disp, x_visinfo, NULL, True);
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qfglXMakeCurrent (x_disp, x_win, ctx);
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vid.aspect = ((float) vid.height / (float) vid.width) * (320.0 / 240.0);
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vid.numpages = 2;
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GL_Init ();
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VID_InitGamma (palette);
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// Check for 8-bit extension and initialize if present
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VID_Init8bitPalette ();
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VID_SetPalette (vid.palette);
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Con_Printf ("Video mode %dx%d initialized.\n", scr_width, scr_height);
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vid.initialized = true;
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vid.recalc_refdef = 1; // force a surface cache flush
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}
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void
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VID_Init_Cvars ()
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{
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X11_Init_Cvars ();
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}
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void
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VID_SetCaption (const char *text)
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{
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if (text && *text) {
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char *temp = strdup (text);
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X11_SetCaption (va ("%s %s: %s", PROGRAM, VERSION, temp));
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free (temp);
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} else {
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X11_SetCaption (va ("%s %s", PROGRAM, VERSION));
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}
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}
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qboolean
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VID_SetGamma (double gamma)
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{
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return X11_SetGamma (gamma);
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}
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