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newtree/source/vid_3dfxsvga.c
Zephaniah E. Hull 4f8cabf049 Small syntax cleanup in cmd.h. 
Reworking of extension handling in -3dfx..
Support for changing the 3dfx dithering mode, if the extension is supported.
(Extension is /not/ in upstream mesa yet.)
2000-06-21 16:24:17 +00:00

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/*
vid_3dfxsvga.c
OpenGL device driver for 3Dfx chipsets running Linux
Copyright (C) 1996-1997 Id Software, Inc.
Copyright (C) 1999,2000 Nelson Rush.
Copyright (C) 1999,2000 contributors of the QuakeForge project
Please see the file "AUTHORS" for a list of contributors
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
$Id$
*/
#include "qtypes.h"
#include "quakedef.h"
#include "glquake.h"
#include "sys.h"
#include "console.h"
#include "cvar.h"
#include "sbar.h"
#include "qendian.h"
#include "qargs.h"
//#include "lib_replace.h"
#include <stdio.h>
#include <stdlib.h>
#include <signal.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/gl.h>
#include <GL/fxmesa.h>
#include <glide/sst1vid.h>
#define WARP_WIDTH 320
#define WARP_HEIGHT 200
//unsigned short d_8to16table[256];
unsigned d_8to24table[256];
unsigned char d_15to8table[65536];
static cvar_t *vid_mode;
static cvar_t *vid_redrawfull;
static cvar_t *vid_waitforrefresh;
extern cvar_t *gl_triplebuffer;
#ifdef HAVE_DLOPEN
static void *dlhand = NULL;
#endif
static fxMesaContext fc = NULL;
static int scr_width, scr_height;
static qboolean is8bit = 0;
int VID_options_items = 0;
/*-----------------------------------------------------------------------*/
//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;
// ARB Multitexture
int gl_mtex_enum = TEXTURE0_SGIS;
qboolean gl_arb_mtex = false;
qboolean gl_mtexable = false;
/*-----------------------------------------------------------------------*/
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 (!fc)
return;
fxMesaDestroyContext(fc);
}
void signal_handler(int sig)
{
printf("Received signal %d, exiting...\n", sig);
Host_Shutdown();
abort();
//Sys_Quit();
exit(0);
}
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);
}
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];
//#endif
float dist, bestdist;
//
// 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.
{
static qboolean palflag = false;
// 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
}
typedef void (GLAPIENTRY *gl3DfxSetDitherModeEXT_FUNC) (GrDitherMode_t mode);
/*
===============
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);
CheckMultiTextureExtensions ();
glClearColor (1,0,0,0);
glCullFace(GL_FRONT);
glEnable(GL_TEXTURE_2D);
glEnable(GL_ALPHA_TEST);
glAlphaFunc(GL_GREATER, 0.666);
glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
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);
Con_Printf ("Dithering: ");
dlhand = dlopen (NULL, RTLD_LAZY);
if (dlhand == NULL) {
Con_SafePrintf ("unable to set.\n");
return;
}
if (strstr(gl_extensions, "3DFX_set_dither_mode")) {
gl3DfxSetDitherModeEXT_FUNC dither_select = NULL;
dither_select = (void *) dlsym(dlhand, "gl3DfxSetDitherModeEXT");
if (COM_CheckParm ("-dither_2x2")) {
dither_select(GR_DITHER_2x2);
Con_Printf ("2x2.\n");
} else if (COM_CheckParm ("-dither_4x4")) {
dither_select(GR_DITHER_4x4);
Con_Printf ("4x4.\n");
} else {
glDisable(GL_DITHER);
Con_Printf ("disabled.\n");
}
}
dlclose(dlhand);
dlhand = NULL;
}
/*
=================
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();
fxMesaSwapBuffers();
Sbar_Changed ();
}
static int resolutions[][3]={
{ 320, 200, GR_RESOLUTION_320x200 },
{ 320, 240, GR_RESOLUTION_320x240 },
{ 400, 256, GR_RESOLUTION_400x256 },
{ 400, 300, GR_RESOLUTION_400x300 },
{ 512, 256, GR_RESOLUTION_512x256 },
{ 512, 384, GR_RESOLUTION_512x384 },
{ 640, 200, GR_RESOLUTION_640x200 },
{ 640, 350, GR_RESOLUTION_640x350 },
{ 640, 400, GR_RESOLUTION_640x400 },
{ 640, 480, GR_RESOLUTION_640x480 },
{ 800, 600, GR_RESOLUTION_800x600 },
{ 856, 480, GR_RESOLUTION_856x480 },
{ 960, 720, GR_RESOLUTION_960x720 },
#ifdef GR_RESOLUTION_1024x768
{ 1024, 768, GR_RESOLUTION_1024x768 },
#endif
#ifdef GR_RESOLUTION_1152x864
{ 1152, 864, GR_RESOLUTION_1152x864 },
#endif
#ifdef GR_RESOLUTION_1280x960
{ 1280, 960, GR_RESOLUTION_1280x960 },
#endif
#ifdef GR_RESOLUTION_1280x1024
{ 1280, 1024, GR_RESOLUTION_1280x1024 },
#endif
#ifdef GR_RESOLUTION_1600x1024
{ 1600, 1024, GR_RESOLUTION_1600x1024 },
#endif
#ifdef GR_RESOLUTION_1600x1200
{ 1600, 1200, GR_RESOLUTION_1600x1200 },
#endif
#ifdef GR_RESOLUTION_1792x1344
{ 1792, 1344, GR_RESOLUTION_1792x1344 },
#endif
#ifdef GR_RESOLUTION_1856x1392
{ 1856, 1392, GR_RESOLUTION_1856x1392 },
#endif
#ifdef GR_RESOLUTION_1920x1440
{ 1920, 1440, GR_RESOLUTION_1920x1440 },
#endif
#ifdef GR_RESOLUTION_2048x1536
{ 2048, 1536, GR_RESOLUTION_2048x1536 },
#endif
#ifdef GR_RESOLUTION_2048x2048
{ 2048, 2048, GR_RESOLUTION_2048x2048 }
#endif
};
#define NUM_RESOLUTIONS (sizeof(resolutions)/(sizeof(int)*3))
static int
findres(int *width, int *height)
{
int i;
for(i=0; i < NUM_RESOLUTIONS; i++) {
if((*width <= resolutions[i][0]) &&
(*height <= resolutions[i][1])) {
*width = resolutions[i][0];
*height = resolutions[i][1];
return resolutions[i][2];
}
}
*width = 640;
*height = 480;
return GR_RESOLUTION_640x480;
}
qboolean VID_Is8bit(void)
{
return is8bit;
}
typedef void (GLAPIENTRY *glColorTableEXT_FUNC) (GLenum, GLenum, GLsizei,
GLenum, GLenum, const GLvoid *);
typedef void (GLAPIENTRY *gl3DfxSetPaletteEXT_FUNC) (GLuint *pal);
void VID_Init8bitPalette()
{
// Check for 8bit Extensions and initialize them.
int i;
dlhand = dlopen (NULL, RTLD_LAZY);
Con_SafePrintf ("8-bit GL extensions: ");
if (dlhand == NULL) {
Con_SafePrintf ("unable to check.\n");
return;
}
if (COM_CheckParm("-no8bit")) {
Con_SafePrintf("disabled.\n");
return;
}
if (strstr(gl_extensions, "3DFX_set_global_palette")) {
char *oldpal;
GLubyte table[256][4];
gl3DfxSetPaletteEXT_FUNC load_texture = NULL;
Con_SafePrintf("3DFX_set_global_palette.\n");
load_texture = (void *) dlsym(dlhand, "gl3DfxSetPaletteEXT");
glEnable( GL_SHARED_TEXTURE_PALETTE_EXT );
oldpal = (char *) d_8to24table; //d_8to24table3dfx;
for (i=0;i<256;i++) {
table[i][2] = *oldpal++;
table[i][1] = *oldpal++;
table[i][0] = *oldpal++;
table[i][3] = 255;
oldpal++;
}
load_texture((GLuint *)table);
is8bit = true;
} else if (strstr(gl_extensions, "GL_EXT_shared_texture_palette")) {
char thePalette[256*3];
char *oldPalette, *newPalette;
glColorTableEXT_FUNC load_texture = NULL;
Con_SafePrintf("GL_EXT_shared.\n");
load_texture = (void *) dlsym(dlhand, "glColorTableEXT");
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++;
}
load_texture(GL_SHARED_TEXTURE_PALETTE_EXT, GL_RGB, 256, GL_RGB, GL_UNSIGNED_BYTE, (void *) thePalette);
is8bit = true;
}
dlclose(dlhand);
dlhand = NULL;
Con_SafePrintf ("not found.\n");
}
void VID_Init(unsigned char *palette)
{
int i;
GLint attribs[32];
char gldir[MAX_OSPATH];
int width = 640, height = 480;
vid_mode = Cvar_Get ("vid_mode", "5", 0, "None");
vid_redrawfull = Cvar_Get ("vid_redrawfull", "0", 0," None");
vid_waitforrefresh = Cvar_Get ("vid_waitforrefresh", "0", CVAR_ARCHIVE,
"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
attribs[0] = FXMESA_DOUBLEBUFFER;
attribs[1] = FXMESA_ALPHA_SIZE;
attribs[2] = 1;
attribs[3] = FXMESA_DEPTH_SIZE;
attribs[4] = 1;
attribs[5] = FXMESA_NONE;
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 = 640;
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;
if ((i = COM_CheckParm("-conheight")) != 0)
vid.conheight = atoi(com_argv[i+1]);
if (vid.conheight < 200)
vid.conheight = 200;
fc = fxMesaCreateContext(0, findres(&width, &height), GR_REFRESH_75Hz,
attribs);
if (!fc)
Sys_Error("Unable to create 3DFX context.\n");
scr_width = width;
scr_height = height;
fxMesaMakeCurrent(fc);
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);
VID_SetPalette(palette);
// Check for 3DFX Extensions and initialize them.
VID_Init8bitPalette();
Con_SafePrintf ("Video mode %dx%d initialized.\n", width, height);
vid.recalc_refdef = 1; // force a surface cache flush
}
void VID_ExtraOptionDraw(unsigned int options_draw_cursor)
{
/* Port specific Options menu entrys */
}
void VID_ExtraOptionCmd(int option_cursor)
{
/*
switch(option_cursor)
{
case 12: // Always start with 12
break;
}
*/
}
void VID_InitCvars ()
{
gl_triplebuffer = Cvar_Get ("gl_triplebuffer","1",CVAR_ARCHIVE,"None");
}
void
VID_LockBuffer ( void )
{
}
void
VID_UnlockBuffer ( void )
{
}
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