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nuq/source/vid_sgl.c

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/*
vid_sgl.c
Video driver for OpenGL-using versions of SDL
Copyright (C) 1996-1997 Id Software, Inc.
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>
#include <SDL/SDL.h>
#include "compat.h"
#include "host.h"
#include "qtypes.h"
#include "qendian.h"
#include "glquake.h"
#include "cvar.h"
#include "qargs.h"
#include "console.h"
#include "input.h"
#include "keys.h"
#include "menu.h"
#include "sys.h"
#include "draw.h"
#include "quakefs.h"
#include "qdefs.h"
#define WARP_WIDTH 320
#define WARP_HEIGHT 200
static qboolean vid_initialized = false;
cvar_t *vid_mode;
cvar_t *vid_fullscreen;
extern cvar_t *gl_triplebuffer;
extern cvar_t *in_dga_mouseaccel;
cvar_t *_windowed_mouse;
cvar_t *m_filter;
#ifdef WIN32
/* fixme: this is evil hack */
#include <windows.h>
HWND mainwindow;
#endif
unsigned short d_8to16table[256];
unsigned d_8to24table[256];
unsigned char d_15to8table[65536];
int scr_width, scr_height;
int VID_options_items = 1;
int texture_mode = GL_LINEAR;
int texture_extension_number = 1;
float gldepthmin, gldepthmax;
cvar_t *gl_ztrick;
const char *gl_vendor;
const char *gl_renderer;
const char *gl_version;
const char *gl_extensions;
qboolean is8bit = false;
qboolean gl_mtexable = false;
int gl_mtex_enum = TEXTURE0_SGIS;
int modestate;
static qboolean mouse_avail;
static float mouse_x, mouse_y;
static float old_mouse_x, old_mouse_y;
static float old__windowed_mouse;
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");
SDL_Quit ();
}
#ifndef WIN32
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_SetPalette (unsigned char *palette)
{
byte *pal;
unsigned r,g,b;
unsigned v;
int r1,g1,b1;
int k;
unsigned short i;
unsigned *table;
QFile *f;
char s[256];
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] &= 0xffffff; // 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) {
Qread(f, d_15to8table, 1<<15);
Qclose(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 = Qopen (s, "wb")) != NULL) {
Qwrite (f, d_15to8table, 1<<15);
Qclose (f);
}
}
}
void
VID_ShiftPalette (unsigned char *palette)
{
VID_SetPalette(palette);
}
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);
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);
glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
}
/*
=================
GL_BeginRendering
=================
*/
void
GL_BeginRendering (int *x, int *y, int *width, int *height)
{
*x = *y = 0;
*width = scr_width;
*height = scr_height;
}
void
GL_EndRendering (void)
{
glFlush();
SDL_GL_SwapBuffers ();
}
qboolean
VID_Is8bit(void)
{
return is8bit;
}
#ifdef GL_EXT_SHARED
void
VID_Init8bitPalette (void)
{
// 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)
{
Uint32 flags = SDL_OPENGL;
int i;
char gldir[MAX_OSPATH];
int width = 640, height = 480;
vid_mode = Cvar_Get ("vid_mode","0",0,"None");
gl_ztrick = Cvar_Get ("gl_ztrick","0",CVAR_ARCHIVE,"None");
vid_fullscreen = Cvar_Get ("vid_fullscreen","0",0,"None");
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 = max (atoi (com_argv[i+1]), 200);
// Initialize the SDL library
if (SDL_Init (SDL_INIT_VIDEO) < 0)
Sys_Error ("Couldn't initialize SDL: %s\n", SDL_GetError ());
// Check if we want fullscreen
if (vid_fullscreen->int_val) {
flags |= SDL_FULLSCREEN;
// Don't annoy Mesa/3dfx folks
#ifndef WIN32
// FIXME: Maybe this could be put in a different spot, but I don't know where.
// Anyway, it's to work around a 3Dfx Glide bug.
SDL_ShowCursor (0);
SDL_WM_GrabInput (SDL_GRAB_ON);
setenv ("MESA_GLX_FX", "fullscreen", 1);
} else {
setenv ("MESA_GLX_FX", "window", 1);
#endif
}
// Setup GL Attributes
SDL_GL_SetAttribute (SDL_GL_RED_SIZE, 1);
SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, 1);
SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, 1);
SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 1);
if (SDL_SetVideoMode (width, height, 8, flags) == NULL) {
Sys_Error ("Couldn't set video mode: %s\n", SDL_GetError ());
SDL_Quit ();
}
scr_width = width;
scr_height = height;
vid.height = vid.conheight = min (vid.conheight, height);
vid.width = vid.conwidth = min (vid.conwidth, width);
vid.aspect = ((float) vid.height / (float) vid.width) * (320.0 / 240.0);
vid.numpages = 2;
#ifndef WIN32
InitSig (); // trap evil signals
#endif
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;
#ifdef WIN32
// fixme: EVIL thing - but needed for win32 until we get
// SDL_sound ready - without this DirectSound fails.
// could replace this with SDL_SysWMInfo
mainwindow=GetActiveWindow();
#endif
vid.recalc_refdef = 1; // force a surface cache flush
}
void VID_InitCvars()
{
gl_triplebuffer = Cvar_Get("gl_triplebuffer","1",CVAR_ARCHIVE,"None");
}
/*
================
IN_SendKeyEvents
================
*/
void
IN_SendKeyEvents (void)
{
SDL_Event event;
int sym, state, but;
int modstate;
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_KEYDOWN:
case SDL_KEYUP:
sym = event.key.keysym.sym;
state = event.key.state;
modstate = SDL_GetModState ();
switch (sym) {
case SDLK_DELETE: sym = K_DEL; break;
case SDLK_BACKSPACE: sym = K_BACKSPACE; break;
case SDLK_F1: sym = K_F1; break;
case SDLK_F2: sym = K_F2; break;
case SDLK_F3: sym = K_F3; break;
case SDLK_F4: sym = K_F4; break;
case SDLK_F5: sym = K_F5; break;
case SDLK_F6: sym = K_F6; break;
case SDLK_F7: sym = K_F7; break;
case SDLK_F8: sym = K_F8; break;
case SDLK_F9: sym = K_F9; break;
case SDLK_F10: sym = K_F10; break;
case SDLK_F11: sym = K_F11; break;
case SDLK_F12: sym = K_F12; break;
case SDLK_BREAK:
case SDLK_PAUSE: sym = K_PAUSE; break;
case SDLK_UP: sym = K_UPARROW; break;
case SDLK_DOWN: sym = K_DOWNARROW; break;
case SDLK_RIGHT: sym = K_RIGHTARROW; break;
case SDLK_LEFT: sym = K_LEFTARROW; break;
case SDLK_INSERT: sym = K_INS; break;
case SDLK_HOME: sym = K_HOME; break;
case SDLK_END: sym = K_END; break;
case SDLK_PAGEUP: sym = K_PGUP; break;
case SDLK_PAGEDOWN: sym = K_PGDN; break;
case SDLK_RSHIFT:
case SDLK_LSHIFT: sym = K_SHIFT; break;
case SDLK_RCTRL:
case SDLK_LCTRL: sym = K_CTRL; break;
case SDLK_RALT:
case SDLK_LALT: sym = K_ALT; break;
case SDLK_CAPSLOCK: sym = K_CAPSLOCK; break;
case SDLK_KP0:
if (modstate & KMOD_NUM)
sym = K_INS;
else
sym = SDLK_0;
break;
case SDLK_KP1:
if (modstate & KMOD_NUM)
sym = K_END;
else
sym = SDLK_1;
break;
case SDLK_KP2:
if (modstate & KMOD_NUM)
sym = K_DOWNARROW;
else
sym = SDLK_2;
break;
case SDLK_KP3:
if (modstate & KMOD_NUM)
sym = K_PGDN;
else
sym = SDLK_3;
break;
case SDLK_KP4:
if (modstate & KMOD_NUM)
sym = K_LEFTARROW;
else
sym = SDLK_4;
break;
case SDLK_KP5: sym = SDLK_5; break;
case SDLK_KP6:
if (modstate & KMOD_NUM)
sym = K_RIGHTARROW;
else
sym = SDLK_6;
break;
case SDLK_KP7:
if (modstate & KMOD_NUM)
sym = K_HOME;
else
sym = SDLK_7;
break;
case SDLK_KP8:
if (modstate & KMOD_NUM)
sym = K_UPARROW;
else
sym = SDLK_8;
break;
case SDLK_KP9:
if (modstate & KMOD_NUM)
sym = K_PGUP;
else
sym = SDLK_9;
break;
case SDLK_KP_PERIOD:
if (modstate & KMOD_NUM)
sym = K_DEL;
else
sym = SDLK_PERIOD;
break;
case SDLK_KP_DIVIDE: sym = SDLK_SLASH; break;
case SDLK_KP_MULTIPLY: sym = SDLK_ASTERISK; break;
case SDLK_KP_MINUS: sym = SDLK_MINUS; break;
case SDLK_KP_PLUS: sym = SDLK_PLUS; break;
case SDLK_KP_ENTER: sym = SDLK_RETURN; break;
case SDLK_KP_EQUALS: sym = SDLK_EQUALS; break;
}
// If we're not directly handled and still above 255
// just force it to 0
if (sym > 255)
sym = 0;
Key_Event(sym, state);
break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
but = event.button.button;
if (but == 2) {
but = 3;
} else if (but == 3) {
but = 2;
}
switch (but) {
case 1:
case 2:
case 3:
Key_Event(K_MOUSE1 + but - 1, event.type == SDL_MOUSEBUTTONDOWN);
break;
case 4:
Key_Event(K_MWHEELUP, 1);
Key_Event(K_MWHEELUP, 0);
break;
case 5:
Key_Event(K_MWHEELDOWN, 1);
Key_Event(K_MWHEELDOWN, 0);
break;
default:
break;
}
break;
case SDL_MOUSEMOTION:
if (_windowed_mouse->int_val) {
if ((event.motion.x != (vid.width/2)) ||
(event.motion.y != (vid.height/2)) ) {
mouse_x = event.motion.xrel*2;
mouse_y = event.motion.yrel*2;
if ( (event.motion.x < ((vid.width/2)-(vid.width/4))) ||
(event.motion.x > ((vid.width/2)+(vid.width/4))) ||
(event.motion.y < ((vid.height/2)-(vid.height/4))) ||
(event.motion.y > ((vid.height/2)+(vid.height/4))) ) {
SDL_WarpMouse(vid.width/2, vid.height/2);
}
}
} else {
mouse_x = event.motion.xrel*2;
mouse_y = event.motion.yrel*2;
}
break;
case SDL_QUIT:
CL_Disconnect ();
Sys_Quit ();
break;
default:
break;
}
}
}
void
IN_Init (void)
{
_windowed_mouse = Cvar_Get ("_windowed_mouse", "0", CVAR_ARCHIVE, "Grab mouse and keyboard input");
m_filter = Cvar_Get ("m_filter", "0", CVAR_ARCHIVE, "None");
if (COM_CheckParm ("-nomouse") && !_windowed_mouse->int_val)
return;
mouse_x = mouse_y = 0.0;
mouse_avail = 1;
SDL_ShowCursor (0);
SDL_WM_GrabInput (SDL_GRAB_ON);
// FIXME: disable DGA if in_dgamouse says to
}
void
IN_Shutdown (void)
{
mouse_avail = 0;
}
void
IN_Commands(void)
{
if (old__windowed_mouse != _windowed_mouse->int_val) {
old__windowed_mouse = _windowed_mouse->int_val;
if (_windowed_mouse->int_val) { // grab the pointer
SDL_ShowCursor (0);
SDL_WM_GrabInput (SDL_GRAB_ON);
} else { // ungrab the pointer
SDL_WM_GrabInput (SDL_GRAB_OFF);
SDL_ShowCursor (1);
}
}
}
void
IN_Move(usercmd_t *cmd)
{
if (!mouse_avail)
return;
if (m_filter->int_val) {
mouse_x = (mouse_x + old_mouse_x) * 0.5;
mouse_y = (mouse_y + old_mouse_y) * 0.5;
}
old_mouse_x = mouse_x;
old_mouse_y = mouse_y;
mouse_x *= sensitivity->value;
mouse_y *= sensitivity->value;
if ( (in_strafe.state & 1) || (lookstrafe->int_val && (in_mlook.state & 1) ))
cmd->sidemove += m_side->value * mouse_x;
else
cl.viewangles[YAW] -= m_yaw->value * mouse_x;
if (in_mlook.state & 1)
V_StopPitchDrift ();
if ( (in_mlook.state & 1) && !(in_strafe.state & 1)) {
cl.viewangles[PITCH] = bound (-70, cl.viewangles[PITCH] + (m_pitch->value * mouse_y), 80);
} else {
if ((in_strafe.state & 1) && noclip_anglehack)
cmd->upmove -= m_forward->value * mouse_y;
else
cmd->forwardmove -= m_forward->value * mouse_y;
}
mouse_x = mouse_y = 0.0;
}
void
VID_SetCaption (char *text)
{
SDL_WM_SetCaption(text, NULL);
}
void VID_HandlePause (qboolean pause)
{
}
void IN_HandlePause (qboolean pause)
{
}
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