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/*
vid_glx.c
OpenGL GLX video driver
Copyright (C) 1996-1997 Id Software, Inc.
Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se]
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
$Id$
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <signal.h>
#include <values.h>
#ifdef HAVE_DLFCN_H
# include <dlfcn.h>
#endif
#ifndef RTLD_LAZY
# ifdef DL_LAZY
# define RTLD_LAZY DL_LAZY
# else
# define RTLD_LAZY 0
# endif
#endif
#include <GL/glx.h>
#include <X11/keysym.h>
#include <X11/cursorfont.h>
#ifdef HAVE_DGA
# include <X11/extensions/xf86dga.h>
#endif
#ifdef HAVE_VIDMODE
# include <X11/extensions/xf86vmode.h>
#endif
#ifdef XMESA
# include <GL/xmesa.h>
#endif
#include "qtypes.h"
#include "quakedef.h"
#include "qendian.h"
#include "glquake.h"
#include "cvar.h"
#include "qargs.h"
#include "console.h"
#include "keys.h"
#include "menu.h"
#include "sys.h"
#include "draw.h"
#include "sbar.h"
#include "context_x11.h"
#include "dga_check.h"
#define WARP_WIDTH 320
#define WARP_HEIGHT 200
static qboolean vid_initialized = false;
static int screen;
Window x_win;
static GLXContext ctx = NULL;
static Cursor nullcursor = None;
#define X_MASK (VisibilityChangeMask | StructureNotifyMask)
unsigned short d_8to16table[256];
unsigned d_8to24table[256];
unsigned char d_15to8table[65536];
cvar_t *vid_mode;
cvar_t *vid_fullscreen;
extern cvar_t *gl_triplebuffer;
extern cvar_t *in_dga_mouseaccel;
#ifdef HAVE_VIDMODE
static XF86VidModeModeInfo **vidmodes;
static int nummodes, hasvidmode = 0;
#endif
#ifdef HAVE_DGA
static int hasdgavideo = 0;
static int hasdga = 0;
#endif
#ifdef HAVE_DLOPEN
static void *dlhand = NULL;
#endif
static GLboolean (*QF_XMesaSetFXmode)(GLint mode) = NULL;
int scr_width, scr_height;
#if defined(XMESA) || defined(HAVE_DGA)
int VID_options_items = 2;
#else
int VID_options_items = 1;
#endif
/*-----------------------------------------------------------------------*/
//int texture_mode = GL_NEAREST;
//int texture_mode = GL_NEAREST_MIPMAP_NEAREST;
//int texture_mode = GL_NEAREST_MIPMAP_LINEAR;
int texture_mode = GL_LINEAR;
//int texture_mode = GL_LINEAR_MIPMAP_NEAREST;
//int texture_mode = GL_LINEAR_MIPMAP_LINEAR;
int texture_extension_number = 1;
float gldepthmin, gldepthmax;
const char *gl_vendor;
const char *gl_renderer;
const char *gl_version;
const char *gl_extensions;
qboolean is8bit = false;
// ARB Multitexture
int gl_mtex_enum = TEXTURE0_SGIS;
qboolean gl_arb_mtex = false;
qboolean gl_mtexable = false;
/*
======================
Create an empty cursor
======================
*/
static void
CreateNullCursor(Display *display, Window root)
{
Pixmap cursormask;
XGCValues xgc;
GC gc;
XColor dummycolour;
if (nullcursor != None) return;
cursormask = XCreatePixmap(display, root, 1, 1, 1/*depth*/);
xgc.function = GXclear;
gc = XCreateGC(display, cursormask, GCFunction, &xgc);
XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
dummycolour.pixel = 0;
dummycolour.red = 0;
dummycolour.flags = 04;
nullcursor = XCreatePixmapCursor(display, cursormask, cursormask,
&dummycolour,&dummycolour, 0,0);
XFreePixmap(display,cursormask);
XFreeGC(display,gc);
}
/*-----------------------------------------------------------------------*/
void D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height)
{
}
void D_EndDirectRect (int x, int y, int width, int height)
{
}
void
VID_Shutdown(void)
{
if (!vid_initialized)
return;
Con_Printf("VID_Shutdown\n");
XDestroyWindow(x_disp, x_win);
glXDestroyContext(x_disp, ctx);
#ifdef HAVE_VIDMODE
if (hasvidmode) {
int i;
XF86VidModeSwitchToMode (x_disp, DefaultScreen (x_disp),
vidmodes[0]);
for (i = 0; i < nummodes; i++) {
// if (vidmodes[i]->privsize) XFree(vidmodes[i]->private);
}
XFree(vidmodes);
}
#endif
#ifdef HAVE_DLOPEN
if (dlhand) {
dlclose(dlhand);
dlhand = NULL;
}
#endif
if (nullcursor != None) {
XFreeCursor(x_disp, nullcursor);
nullcursor = None;
}
x11_close_display();
}
#if 0
static void
signal_handler(int sig)
{
printf("Received signal %d, exiting...\n", sig);
Sys_Quit();
exit(sig);
}
static void
InitSig(void)
{
signal(SIGHUP, signal_handler);
signal(SIGINT, signal_handler);
signal(SIGQUIT, signal_handler);
signal(SIGILL, signal_handler);
signal(SIGTRAP, signal_handler);
signal(SIGIOT, signal_handler);
signal(SIGBUS, signal_handler);
/* signal(SIGFPE, signal_handler); */
signal(SIGSEGV, signal_handler);
signal(SIGTERM, signal_handler);
}
#endif
void VID_ShiftPalette(unsigned char *p)
{
VID_SetPalette(p);
}
void VID_SetPalette (unsigned char *palette)
{
byte *pal;
unsigned r,g,b;
unsigned v;
int r1,g1,b1;
int k;
unsigned short i;
unsigned *table;
FILE *f;
char s[255];
float dist, bestdist;
static qboolean palflag = false;
//
// 8 8 8 encoding
//
// Con_Printf("Converting 8to24\n");
pal = palette;
table = d_8to24table;
for (i=0 ; i<256 ; i++)
{
r = pal[0];
g = pal[1];
b = pal[2];
pal += 3;
// v = (255<<24) + (r<<16) + (g<<8) + (b<<0);
// v = (255<<0) + (r<<8) + (g<<16) + (b<<24);
v = (255<<24) + (r<<0) + (g<<8) + (b<<16);
*table++ = v;
}
d_8to24table[255] &= 0; // 255 is transparent
// JACK: 3D distance calcs - k is last closest, l is the distance.
// FIXME: Precalculate this and cache to disk.
if (palflag)
return;
palflag = true;
COM_FOpenFile("glquake/15to8.pal", &f);
if (f) {
fread(d_15to8table, 1<<15, 1, f);
fclose(f);
} else {
for (i=0; i < (1<<15); i++) {
/* Maps
000000000000000
000000000011111 = Red = 0x1F
000001111100000 = Blue = 0x03E0
111110000000000 = Grn = 0x7C00
*/
r = ((i & 0x1F) << 3)+4;
g = ((i & 0x03E0) >> 2)+4;
b = ((i & 0x7C00) >> 7)+4;
pal = (unsigned char *)d_8to24table;
for (v=0,k=0,bestdist=10000.0; v<256; v++,pal+=4) {
r1 = (int)r - (int)pal[0];
g1 = (int)g - (int)pal[1];
b1 = (int)b - (int)pal[2];
dist = sqrt(((r1*r1)+(g1*g1)+(b1*b1)));
if (dist < bestdist) {
k=v;
bestdist = dist;
}
}
d_15to8table[i]=k;
}
snprintf(s, sizeof(s), "%s/glquake", com_gamedir);
Sys_mkdir (s);
snprintf(s, sizeof(s), "%s/glquake/15to8.pal", com_gamedir);
if ((f = fopen(s, "wb")) != NULL) {
fwrite(d_15to8table, 1<<15, 1, f);
fclose(f);
}
}
}
/*
CheckMultiTextureExtensions
Check for ARB, SGIS, or EXT multitexture support
*/
void
CheckMultiTextureExtensions ( void )
{
Con_Printf ("Checking for multitexture... ");
if (COM_CheckParm ("-nomtex"))
{
Con_Printf ("disabled\n");
return;
}
#ifdef HAVE_DLOPEN
dlhand = dlopen (NULL, RTLD_LAZY);
if (dlhand == NULL)
{
Con_Printf ("unable to check\n");
return;
}
if (strstr(gl_extensions, "GL_ARB_multitexture "))
{
Con_Printf ("GL_ARB_multitexture\n");
qglMTexCoord2f = (void *)dlsym(dlhand, "glMultiTexCoord2fARB");
qglSelectTexture = (void *)dlsym(dlhand, "glActiveTextureARB");
gl_mtex_enum = GL_TEXTURE0_ARB;
gl_mtexable = true;
gl_arb_mtex = true;
} else if (strstr(gl_extensions, "GL_SGIS_multitexture "))
{
Con_Printf ("GL_SGIS_multitexture\n");
qglMTexCoord2f = (void *)dlsym(dlhand, "glMTexCoord2fSGIS");
qglSelectTexture = (void *)dlsym(dlhand, "glSelectTextureSGIS");
gl_mtex_enum = TEXTURE0_SGIS;
gl_mtexable = true;
gl_arb_mtex = false;
} else if (strstr(gl_extensions, "GL_EXT_multitexture "))
{
Con_Printf ("GL_EXT_multitexture\n");
qglMTexCoord2f = (void *)dlsym(dlhand, "glMTexCoord2fEXT");
qglSelectTexture = (void *)dlsym(dlhand, "glSelectTextureEXT");
gl_mtex_enum = TEXTURE0_SGIS;
gl_mtexable = true;
gl_arb_mtex = false;
} else {
Con_Printf ("none found\n");
}
dlclose(dlhand);
dlhand = NULL;
#else
gl_mtexable = false;
#endif
}
/*
===============
GL_Init
===============
*/
void GL_Init (void)
{
gl_vendor = glGetString (GL_VENDOR);
Con_Printf ("GL_VENDOR: %s\n", gl_vendor);
gl_renderer = glGetString (GL_RENDERER);
Con_Printf ("GL_RENDERER: %s\n", gl_renderer);
gl_version = glGetString (GL_VERSION);
Con_Printf ("GL_VERSION: %s\n", gl_version);
gl_extensions = glGetString (GL_EXTENSIONS);
Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions);
// Con_Printf ("%s %s\n", gl_renderer, gl_version);
CheckMultiTextureExtensions ();
glClearColor (0,0,0,0);
glCullFace(GL_FRONT);
glEnable(GL_TEXTURE_2D);
glEnable(GL_ALPHA_TEST);
glAlphaFunc(GL_GREATER, 0.666);
glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
/* glShadeMode(GL_SMOOTH) should look better then GL_FLAT but
I don't know if it looks any better, sure is slower
glShadeModel (GL_SMOOTH);
*/
glShadeModel (GL_FLAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
}
/*
=================
GL_BeginRendering
=================
*/
void GL_BeginRendering (int *x, int *y, int *width, int *height)
{
*x = *y = 0;
*width = scr_width;
*height = scr_height;
// if (!wglMakeCurrent( maindc, baseRC ))
// Sys_Error ("wglMakeCurrent failed");
// glViewport (*x, *y, *width, *height);
}
void GL_EndRendering (void)
{
glFlush();
glXSwapBuffers(x_disp, x_win);
Sbar_Changed ();
}
qboolean VID_Is8bit(void)
{
return is8bit;
}
#ifdef GL_EXT_SHARED
void VID_Init8bitPalette()
{
// Check for 8bit Extensions and initialize them.
int i;
char thePalette[256*3];
char *oldPalette, *newPalette;
if (strstr(gl_extensions, "GL_EXT_shared_texture_palette") == NULL)
return;
Con_SafePrintf("8-bit GL extensions enabled.\n");
glEnable( GL_SHARED_TEXTURE_PALETTE_EXT );
oldPalette = (char *) d_8to24table; //d_8to24table3dfx;
newPalette = thePalette;
for (i=0;i<256;i++) {
*newPalette++ = *oldPalette++;
*newPalette++ = *oldPalette++;
*newPalette++ = *oldPalette++;
oldPalette++;
}
glColorTableEXT(GL_SHARED_TEXTURE_PALETTE_EXT, GL_RGB, 256, GL_RGB, GL_UNSIGNED_BYTE, (void *) thePalette);
is8bit = true;
}
#else
void VID_Init8bitPalette(void)
{
}
#endif
void VID_Init(unsigned char *palette)
{
int i;
int attrib[] = {
GLX_RGBA,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DOUBLEBUFFER,
GLX_DEPTH_SIZE, 1,
None
};
char gldir[MAX_OSPATH];
int width = 640, height = 480;
XSetWindowAttributes attr;
unsigned long mask;
Window root;
XVisualInfo *visinfo;
vid_mode = Cvar_Get ("vid_mode","0",0,"None");
vid_fullscreen = Cvar_Get ("vid_fullscreen","0",0,"None");
#ifdef HAVE_DGA
in_dga_mouseaccel = Cvar_Get("vid_dga_mouseaccel","1",CVAR_ARCHIVE,
"None");
#endif
vid.maxwarpwidth = WARP_WIDTH;
vid.maxwarpheight = WARP_HEIGHT;
vid.colormap = host_colormap;
vid.fullbright = 256 - LittleLong (*((int *)vid.colormap + 2048));
/* Interpret command-line params
*/
/* Set vid parameters */
if ((i = COM_CheckParm("-width")) != 0)
width = atoi(com_argv[i+1]);
if ((i = COM_CheckParm("-height")) != 0)
height = atoi(com_argv[i+1]);
if ((i = COM_CheckParm("-conwidth")) != 0)
vid.conwidth = atoi(com_argv[i+1]);
else
vid.conwidth = width;
vid.conwidth &= 0xfff8; // make it a multiple of eight
if (vid.conwidth < 320)
vid.conwidth = 320;
// pick a conheight that matches with correct aspect
vid.conheight = vid.conwidth * 3 / 4;
i = COM_CheckParm ("-conheight");
if ( i != 0 ) // Set console height, but no smaller than 200 px
vid.conheight = atoi(com_argv[i+1]);
if (vid.conheight < 200)
vid.conheight = 200;
x11_open_display();
screen = DefaultScreen(x_disp);
root = RootWindow(x_disp, screen);
visinfo = glXChooseVisual(x_disp, screen, attrib);
if (!visinfo) {
fprintf(stderr, "Error couldn't get an RGB, Double-buffered, Depth visual\n");
exit(1);
}
#ifdef HAVE_DGA
{
int maj_ver;
hasdga = VID_CheckDGA(x_disp, &maj_ver, NULL, &hasdgavideo);
if (!hasdga || maj_ver < 1) {
hasdga = hasdgavideo = 0;
}
}
Con_SafePrintf ("hasdga = %i\nhasdgavideo = %i\n", hasdga, hasdgavideo);
#endif
#ifdef HAVE_VIDMODE
hasvidmode = VID_CheckVMode(x_disp, NULL, NULL);
if (hasvidmode) {
if (! XF86VidModeGetAllModeLines(x_disp, DefaultScreen(x_disp),
&nummodes, &vidmodes)
|| nummodes <= 0) {
hasvidmode = 0;
}
}
Con_SafePrintf ("hasvidmode = %i\nnummodes = %i\n", hasvidmode, nummodes);
#endif
#ifdef HAVE_DLOPEN
dlhand = dlopen(NULL, RTLD_LAZY);
if (dlhand) {
QF_XMesaSetFXmode = dlsym(dlhand, "XMesaSetFXmode");
if (!QF_XMesaSetFXmode) {
QF_XMesaSetFXmode = dlsym(dlhand, "_XMesaSetFXmode");
}
} else {
QF_XMesaSetFXmode = NULL;
}
#else
#ifdef XMESA
QF_XMesaSetFXmode = XMesaSetFXmode;
#endif
#endif
if (QF_XMesaSetFXmode) {
#ifdef XMESA
const char *str = getenv("MESA_GLX_FX");
if (str != NULL && *str != 'd') {
if (tolower(*str) == 'w') {
Cvar_Set (vid_fullscreen, "0");
} else {
Cvar_Set (vid_fullscreen, "1");
}
}
#endif
/* Glide uses DGA internally, so we don't want to
mess with it. */
// hasdga = 0;
}
/* window attributes */
attr.background_pixel = 0;
attr.border_pixel = 0;
attr.colormap = XCreateColormap(x_disp, root, visinfo->visual, AllocNone);
attr.event_mask = X_MASK;
mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
#ifdef HAVE_VIDMODE
if (hasvidmode && vid_fullscreen->value) {
int smallest_mode=0, x=MAXINT, y=MAXINT;
attr.override_redirect=1;
mask|=CWOverrideRedirect;
// FIXME: does this depend on mode line order in XF86Config?
for (i=0; i<nummodes; i++) {
if (x>vidmodes[i]->hdisplay || y>vidmodes[i]->vdisplay) {
smallest_mode=i;
x=vidmodes[i]->hdisplay;
y=vidmodes[i]->vdisplay;
}
printf("%dx%d\n",vidmodes[i]->hdisplay,vidmodes[i]->vdisplay);
}
// chose the smallest mode that our window fits into;
for (i=smallest_mode;
i!=(smallest_mode+1)%nummodes;
i=(i?i-1:nummodes-1)) {
if (vidmodes[i]->hdisplay>=width
&& vidmodes[i]->vdisplay>=height) {
XF86VidModeSwitchToMode (x_disp, DefaultScreen (x_disp),
vidmodes[i]);
break;
}
}
XF86VidModeSetViewPort(x_disp, DefaultScreen (x_disp), 0, 0);
_windowed_mouse = Cvar_Get ("_windowed_mouse","1",CVAR_ARCHIVE|CVAR_ROM,"None");
} else
#endif
_windowed_mouse = Cvar_Get ("_windowed_mouse","0",CVAR_ARCHIVE,"None");
x_win = XCreateWindow(x_disp, root, 0, 0, width, height,
0, visinfo->depth, InputOutput,
visinfo->visual, mask, &attr);
XMapWindow(x_disp, x_win);
XRaiseWindow(x_disp, x_win);
/* Invisible cursor */
CreateNullCursor(x_disp, x_win);
XDefineCursor(x_disp, x_win, nullcursor);
XWarpPointer(x_disp, None, x_win, 0, 0, 0, 0,
vid.width+2, vid.height+2);
#ifdef HAVE_VIDMODE
if (hasvidmode && vid_fullscreen->value) {
XGrabKeyboard(x_disp, x_win, 1, GrabModeAsync, GrabModeAsync,
CurrentTime);
}
#endif
XSync(x_disp, 0);
ctx = glXCreateContext(x_disp, visinfo, NULL, True);
glXMakeCurrent(x_disp, x_win, ctx);
scr_width = width;
scr_height = height;
if (vid.conheight > height)
vid.conheight = height;
if (vid.conwidth > width)
vid.conwidth = width;
vid.width = vid.conwidth;
vid.height = vid.conheight;
vid.aspect = ((float)vid.height / (float)vid.width) * (320.0 / 240.0);
vid.numpages = 2;
//InitSig(); // trap evil signals
GL_Init();
snprintf(gldir, sizeof(gldir), "%s/glquake", com_gamedir);
Sys_mkdir (gldir);
GL_CheckGamma (palette);
VID_SetPalette (palette);
// Check for 3DFX Extensions and initialize them.
VID_Init8bitPalette();
Con_SafePrintf ("Video mode %dx%d initialized.\n",
width, height);
vid_initialized = true;
vid.recalc_refdef = 1; // force a surface cache flush
}
void VID_InitCvars()
{
gl_triplebuffer = Cvar_Get("gl_triplebuffer","1",CVAR_ARCHIVE,"None");
}
void
VID_LockBuffer ( void )
{
}
void
VID_UnlockBuffer ( void )
{
}
void VID_SetCaption (char *text)
{
}
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