gl_vidlinux.c

quake1 dos源代码最新版本

/*
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
#include <termios.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/vt.h>
#include <stdarg.h>
#include <stdio.h>
#include <signal.h>

#include <asm/io.h>
#include <dlfcn.h>

/*#include "vga.h" */
#include "vgakeyboard.h"
#include "vgamouse.h"

#include "quakedef.h"
#include "GL/fxmesa.h"

#define WARP_WIDTH		320
#define WARP_HEIGHT		200

static fxMesaContext fc = NULL;
#define stringify(m) { #m, m }

unsigned short	d_8to16table[256];
unsigned	d_8to24table[256];
unsigned char d_15to8table[65536];

int num_shades=32;

struct
{
	char *name;
	int num;
} mice[] =
{
	stringify(MOUSE_MICROSOFT),
	stringify(MOUSE_MOUSESYSTEMS),
	stringify(MOUSE_MMSERIES),
	stringify(MOUSE_LOGITECH),
	stringify(MOUSE_BUSMOUSE),
	stringify(MOUSE_PS2),
};

static unsigned char scantokey[128];

int num_mice = sizeof (mice) / sizeof(mice[0]);

int	d_con_indirect = 0;

int		svgalib_inited=0;
int		UseMouse = 1;
int		UseKeyboard = 1;

int		mouserate = MOUSE_DEFAULTSAMPLERATE;

cvar_t		*vid_mode;
cvar_t		*vid_redrawfull;
cvar_t		*vid_waitforrefresh;

char	*framebuffer_ptr;

cvar_t	*mouse_button_commands[3];

int		mouse_buttons;
int		mouse_buttonstate;
int		mouse_oldbuttonstate;
float	mouse_x, mouse_y;
float	old_mouse_x, old_mouse_y;
int		mx, my;

cvar_t	*m_filter;

int scr_width, scr_height;

/*-----------------------------------------------------------------------*/

//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;

cvar_t	*gl_ztrick;

const char *gl_vendor;
const char *gl_renderer;
const char *gl_version;
const char *gl_extensions;

void (*qgl3DfxSetPaletteEXT) (GLuint *);
void (*qglColorTableEXT) (int, int, int, int, int, const void *);

static float vid_gamma = 1.0;

qboolean is8bit = false;
qboolean isPermedia = 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)
{
}

int matchmouse(int mouse, char *name)
{
	int i;
	for (i=0 ; i<num_mice ; i++)
		if (!strcmp(mice[i].name, name))
			return i;
	return mouse;
}

#if 0

void vtswitch(int newconsole)
{

	int fd;
	struct vt_stat x;

// switch consoles and wait until reactivated
	fd = open("/dev/console", O_RDONLY);
	ioctl(fd, VT_GETSTATE, &x);
	ioctl(fd, VT_ACTIVATE, newconsole);
	ioctl(fd, VT_WAITACTIVE, x.v_active);
	close(fd);

}

#endif

void keyhandler(int scancode, int state)
{

	int sc;

	sc = scancode & 0x7f;

	Key_Event(scantokey[sc], state == KEY_EVENTPRESS);

}

void VID_Shutdown(void)
{
	if (!fc)
		return;

	fxMesaDestroyContext(fc);

	if (UseKeyboard)
		keyboard_close();
}

void signal_handler(int sig)
{
	printf("Received signal %d, exiting...\n", sig);
	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		j,k,l,m;
	unsigned short i;
	unsigned	*table;
	FILE *f;
	char s[255];
	int dist, bestdist;
	static qboolean palflag = false;

//
// 8 8 8 encoding
//
	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<<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.
	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*10000; v<256; v++,pal+=4) {
			r1 = (int)r - (int)pal[0];
			g1 = (int)g - (int)pal[1];
			b1 = (int)b - (int)pal[2];
			dist = (r1*r1)+(g1*g1)+(b1*b1);
			if (dist < bestdist) {
				k=v;
				bestdist = dist;
			}
		}
		d_15to8table[i]=k;
	}
}

void CheckMultiTextureExtensions(void)
{
	void *prjobj;

	if (strstr(gl_extensions, "GL_SGIS_multitexture ") && !COM_CheckParm("-nomtex")) {
		Con_Printf("Found GL_SGIS_multitexture...\n");

		if ((prjobj = dlopen(NULL, RTLD_LAZY)) == NULL) {
			Con_Printf("Unable to open symbol list for main program.\n");
			return;
		}

		qglMTexCoord2fSGIS = (void *) dlsym(prjobj, "glMTexCoord2fSGIS");
		qglSelectTextureSGIS = (void *) dlsym(prjobj, "glSelectTextureSGIS");

		if (qglMTexCoord2fSGIS && qglSelectTextureSGIS) {
			Con_Printf("Multitexture extensions found.\n");
			gl_mtexable = true;
		} else
			Con_Printf("Symbol not found, disabled.\n");

		dlclose(prjobj);
	}
}

/*
===============
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 (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);
	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
}

/*
=================
GL_BeginRendering

=================
*/
void GL_BeginRendering (int *x, int *y, int *width, int *height)
{
	extern cvar_t	*gl_clear;

	*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();
}

void Init_KBD(void)
{
	int i;

	if (COM_CheckParm("-nokbd")) UseKeyboard = 0;

	if (UseKeyboard)
	{
		for (i=0 ; i<128 ; i++)
			scantokey[i] = ' ';

		scantokey[42] = K_SHIFT;
		scantokey[54] = K_SHIFT;
		scantokey[72] = K_UPARROW;
		scantokey[103] = K_UPARROW;
		scantokey[80] = K_DOWNARROW;
		scantokey[108] = K_DOWNARROW;
		scantokey[75] = K_LEFTARROW;
		scantokey[105] = K_LEFTARROW;
		scantokey[77] = K_RIGHTARROW;
		scantokey[106] = K_RIGHTARROW;
		scantokey[29] = K_CTRL;
		scantokey[97] = K_CTRL;
		scantokey[56] = K_ALT;
		scantokey[100] = K_ALT;
//		scantokey[58] = JK_CAPS;
//		scantokey[69] = JK_NUM_LOCK;
		scantokey[71] = K_HOME;
		scantokey[73] = K_PGUP;
		scantokey[79] = K_END;
		scantokey[81] = K_PGDN;
		scantokey[82] = K_INS;
		scantokey[83] = K_DEL;
		scantokey[1 ] = K_ESCAPE;
		scantokey[28] = K_ENTER;
		scantokey[15] = K_TAB;
		scantokey[14] = K_BACKSPACE;
		scantokey[119] = K_PAUSE;
		scantokey[57] = ' ';

		scantokey[102] = K_HOME;
		scantokey[104] = K_PGUP;
		scantokey[107] = K_END;
		scantokey[109] = K_PGDN;
		scantokey[110] = K_INS;
		scantokey[111] = K_DEL;

		scantokey[2] = '1';
		scantokey[3] = '2';
		scantokey[4] = '3';
		scantokey[5] = '4';
		scantokey[6] = '5';
		scantokey[7] = '6';
		scantokey[8] = '7';
		scantokey[9] = '8';
		scantokey[10] = '9';
		scantokey[11] = '0';
		scantokey[12] = '-';
		scantokey[13] = '=';
		scantokey[41] = '`';
		scantokey[26] = '[';
		scantokey[27] = ']';
		scantokey[39] = ';';
		scantokey[40] = '\'';
		scantokey[51] = ',';
		scantokey[52] = '.';
		scantokey[53] = '/';
		scantokey[43] = '\\';

		scantokey[59] = K_F1;
		scantokey[60] = K_F2;
		scantokey[61] = K_F3;
		scantokey[62] = K_F4;
		scantokey[63] = K_F5;
		scantokey[64] = K_F6;
		scantokey[65] = K_F7;
		scantokey[66] = K_F8;
		scantokey[67] = K_F9;
		scantokey[68] = K_F10;
		scantokey[87] = K_F11;
		scantokey[88] = K_F12;
		scantokey[30] = 'a';
		scantokey[48] = 'b';
		scantokey[46] = 'c';
		scantokey[32] = 'd';
		scantokey[18] = 'e';
		scantokey[33] = 'f';
		scantokey[34] = 'g';