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quakeforge/libs/video/targets/vid_3dfxsvga.c

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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 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
$Id$
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <glide/glide.h>
#include <glide/sst1vid.h>
#include <sys/signal.h>
#ifdef HAVE_DLOPEN
# include <dlfcn.h>
#endif
#include "compat.h"
#include "QF/console.h"
#include "QF/cvar.h"
#include "QF/qargs.h"
#include "QF/qendian.h"
#include "sbar.h"
#include "QF/GL/extensions.h"
#include "QF/GL/funcs.h"
#include "QF/sys.h"
#include "QF/va.h"
#include "QF/vid.h"
#include "r_cvar.h"
#define WARP_WIDTH 320
#define WARP_HEIGHT 200
#define GLAPI extern
#define GLAPIENTRY
#define FXMESA_NONE 0 /* to terminate attribList */
#define FXMESA_DOUBLEBUFFER 10
#define FXMESA_ALPHA_SIZE 11 /* followed by an integer */
#define FXMESA_DEPTH_SIZE 12 /* followed by an integer */
#define GL_DITHER 0x0BD0
typedef struct tfxMesaContext *fxMesaContext;
void (* fxMesaDestroyContext) (fxMesaContext ctx);
void (* fxMesaSwapBuffers) (void);
fxMesaContext (* fxMesaCreateContext) (GLuint win, GrScreenResolution_t, GrScreenRefresh_t, const GLint attribList[]);
void (* fxMesaMakeCurrent) (fxMesaContext ctx);
// FIXME!!!!! This belongs in include/qfgl_ext.h -- deek
typedef void (GLAPIENTRY * QF_3DfxSetDitherModeEXT) (GrDitherMode_t mode);
cvar_t *vid_system_gamma;
cvar_t *tdfx_brighten;
static fxMesaContext fc = NULL;
void *libgl_handle;
int VID_options_items = 0;
extern void GL_Init_Common (void);
extern void VID_Init8bitPalette (void);
/*-----------------------------------------------------------------------*/
void
VID_Shutdown (void)
{
if (!fc)
return;
fxMesaDestroyContext (fc);
}
void
signal_handler (int sig)
{
printf ("Received signal %d, exiting...\n", sig);
Sys_Quit ();
}
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);
}
/*
GL_Init
*/
void
GL_Init (void)
{
QF_3DfxSetDitherModeEXT dither_select = NULL;
int p;
GL_Init_Common ();
if (!(QFGL_ExtensionPresent ("3DFX_set_dither_mode")))
return;
if (!(dither_select = QFGL_ExtensionAddress ("gl3DfxSetDitherModeEXT")))
return;
Con_Printf ("Dithering: ");
if ((p = COM_CheckParm ("-dither")) && p < com_argc) {
if (strequal (com_argv[p+1], "2x2")) {
dither_select (GR_DITHER_2x2);
Con_Printf ("2x2.\n");
}
if (strequal (com_argv[p+1], "4x4")) {
dither_select (GR_DITHER_4x4);
Con_Printf ("4x4.\n");
}
} else {
qfglDisable (GL_DITHER);
Con_Printf ("disabled.\n");
}
}
void
GL_EndRendering (void)
{
qfglFlush ();
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;
}
void
TDFX_BrightenPalette (unsigned char *palette)
{
byte *pal;
int i;
float red, green, blue, maxnum, somenum;
pal = palette;
for (i = 0; i < 255; i++)
{
red = (float) pal[0];
green = (float) pal[1];
blue = (float) pal[2];
maxnum = max (red, max (green, blue));
somenum = (bound (0.0, (maxnum * tdfx_brighten->value), 255.0) / maxnum);
pal[0] = (byte) ((somenum * red) + 0.5);
pal[1] = (byte) ((somenum * green) + 0.5);
pal[2] = (byte) ((somenum * blue) + 0.5);
pal += 3;
}
}
void
VID_Init (unsigned char *palette)
{
int i;
GLint attribs[32];
#ifdef HAVE_DLOPEN
if (!(libgl_handle = dlopen (gl_libgl->string, RTLD_NOW))) {
Sys_Error ("Can't open OpenGL library \"%s\": %s\n", gl_libgl->string, dlerror());
return;
}
#else
# error "No dynamic library support. FIXME."
#endif
fxMesaCreateContext = QFGL_ProcAddress (libgl_handle, "fxMesaCreateContext", true);
fxMesaDestroyContext = QFGL_ProcAddress (libgl_handle, "fxMesaDestroyContext", true);
fxMesaMakeCurrent = QFGL_ProcAddress (libgl_handle, "fxMesaMakeCurrent", true);
fxMesaSwapBuffers = QFGL_ProcAddress (libgl_handle, "fxMesaSwapBuffers", true);
QFGL_ProcAddress (NULL, NULL, false);
VID_GetWindowSize (640, 480);
Con_CheckResize (); // Now that we have a window size, fix console
vid.maxwarpwidth = WARP_WIDTH;
vid.maxwarpheight = WARP_HEIGHT;
vid.colormap = vid_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 ("-conwidth")))
vid.conwidth = atoi (com_argv[i + 1]);
else
vid.conwidth = 640;
vid.conwidth &= 0xfff8; // make it a multiple of eight
vid.conwidth = max (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]);
vid.conheight = max (vid.conheight, 200);
fc = fxMesaCreateContext (0, findres (&scr_width, &scr_height),
GR_REFRESH_75Hz, attribs);
if (!fc)
Sys_Error ("Unable to create 3DFX context.\n");
fxMesaMakeCurrent (fc);
vid.width = vid.conwidth = min (vid.conwidth, scr_width);
vid.height = vid.conheight = min (vid.conheight, scr_height);
vid.aspect = ((float) vid.height / (float) vid.width) * (320.0 / 240.0);
vid.numpages = 2;
InitSig (); // trap evil signals
vid_gamma_avail = 1;
GL_Init ();
if (tdfx_brighten->int_val)
TDFX_BrightenPalette(palette);
VID_InitGamma (palette);
VID_SetPalette (palette);
// Check for 3DFX Extensions and initialize them.
VID_Init8bitPalette ();
vid.initialized = true;
Con_Printf ("Video mode %dx%d initialized.\n", scr_width, scr_height);
vid.recalc_refdef = 1; // force a surface cache flush
}
void
VID_Init_Cvars (void)
{
vid_system_gamma = Cvar_Get ("vid_system_gamma", "1", CVAR_ARCHIVE, NULL, "Use system gamma control if available");
tdfx_brighten = Cvar_Get ("tdfx_brighten", "0", CVAR_ROM, NULL, "Brighten 3DFX palette");
}
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_SetCaption (const char *text)
{
}
qboolean
VID_SetGamma (double gamma)
{
grGammaCorrectionValue((float) gamma);
return true;
}
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