Code here for vid_sdl.c:
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/*
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.
*/
// vid_sdl.h -- sdl video driver
// SDLGL Support by Rikku2000
#include "SDL.h"
#include "quakedef.h"
#ifndef GLQUAKE
#include "d_local.h"
#endif
// Much better for high resolution displays
#define BASEWIDTH (320*2)
#define BASEHEIGHT (200*2)
int VGA_width, VGA_height, VGA_rowbytes, VGA_bufferrowbytes = 0;
byte *VGA_pagebase;
viddef_t vid; // global video state
static SDL_Surface *screen = NULL;
unsigned short d_8to16table[256];
#ifdef GLQUAKE
static int scr_width, scr_height;
static float vid_gamma = 1.0;
qboolean is8bit = false;
qboolean fullsbardraw = true;
qboolean isPermedia;
qboolean gl_mtexable;
int min_vid_width;
unsigned d_8to24table[256];
unsigned char d_15to8table[65536];
void (*VID_SetGammaRamp)(unsigned short ramp[3][256]);
static cvar_t m_filter = {"m_filter", "0"};
int texture_mode = GL_NEAREST;
int texture_extension_number = 1;
float gldepthmin, gldepthmax;
cvar_t gl_ztrick = {"gl_ztrick", "1"};
const char *gl_vendor;
const char *gl_renderer;
const char *gl_version;
const char *gl_extensions;
#endif
static qboolean mouse_avail;
static float mouse_x, mouse_y;
static int mouse_oldbuttonstate = 0;
void VID_SetPalette (unsigned char *palette)
{
#ifdef GLQUAKE
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];
float gamma;
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;
for (i=0; i < (1<<15); i++) {
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,l=10000*10000; v<256; v++,pal+=4) {
r1 = r-pal[0];
g1 = g-pal[1];
b1 = b-pal[2];
j = (r1*r1)+(g1*g1)+(b1*b1);
if (j<l) {
k=v;
l=j;
}
}
d_15to8table[i]=k;
}
#else
int i;
SDL_Color colors[256];
for ( i=0; i<256; ++i )
{
colors[i].r = *palette++;
colors[i].g = *palette++;
colors[i].b = *palette++;
}
SDL_SetColors(screen, colors, 0, 256);
#endif
}
void VID_ShiftPalette (unsigned char *palette)
{
#ifndef GLQUAKE
VID_SetPalette(palette);
#endif
}
#ifdef GLQUAKE
void CheckMultiTextureExtensions(void) {
gl_mtexable = false;
}
void GL_Init (void) {
gl_vendor = (const char*)glGetString (GL_VENDOR);
printf("GL_VENDOR: %s\n", gl_vendor);
gl_renderer = (const char*)glGetString (GL_RENDERER);
printf("GL_RENDERER: %s\n", gl_renderer);
gl_version = (const char*)glGetString (GL_VERSION);
printf("GL_VERSION: %s\n", gl_version);
gl_extensions = (const char*)glGetString (GL_EXTENSIONS);
printf("GL_EXTENSIONS: %s\n", gl_extensions);
fullsbardraw = true;
CheckMultiTextureExtensions ();
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
glClearColor (0,0,0,0);
glCullFace(GL_FRONT);
glEnable(GL_TEXTURE_2D);
glEnable(GL_ALPHA_TEST);
glAlphaFunc(GL_GREATER, 0.666);
glPolygonOffset(0.05, 25);
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_REPLACE);
}
/*
=================
GL_BeginRendering
=================
*/
void GL_BeginRendering (int *x, int *y, int *width, int *height) {
*x = *y = 0;
*width = vid.width;
*height = vid.height;
}
void GL_EndRendering (void) {
SDL_GL_SwapBuffers();
if (fullsbardraw)
Sbar_Changed();
}
extern qboolean VID_Is8bit(void) {
return is8bit;
}
void VID_Init8bitPalette(void) {
}
#endif
#ifdef GLQUAKE
static void Check_Gamma (unsigned char *pal) {
float f, inf;
unsigned char palette[768];
int i;
if (i = COM_CheckParm("-gamma"))
{
vid_gamma = Q_atof(com_argv[i+1]);
}
else
{
vid_gamma = 0.75f;
}
printf( "Gamma is %f\n", vid_gamma );
for (i=0 ; i<768 ; i++)
{
f = pow ( (pal[i]+1)/256.0 , vid_gamma );
inf = f*255 + 0.5;
if (inf < 0)
inf = 0;
if (inf > 255)
inf = 255;
palette[i] = inf;
}
memcpy (pal, palette, sizeof(palette));
}
#endif
void VID_Init (unsigned char *palette)
{
#ifdef GLQUAKE
int pnum;
Uint32 flags;
char gldir[MAX_OSPATH];
// Create native window.
printf( "VID_Init: Creating the window\n" );
// Set up display mode (width and height)
vid.width = 640;
vid.height = 400;
if ((pnum=COM_CheckParm("-winsize")))
{
if (pnum >= com_argc-2)
Sys_Error("VID: -winsize <width> <height>\n");
vid.width = Q_atoi(com_argv[pnum+1]);
vid.height = Q_atoi(com_argv[pnum+2]);
if (!vid.width || !vid.height)
Sys_Error("VID: Bad window width/height\n");
}
// Set video width, height and flags
flags = (SDL_OPENGL);
if (COM_CheckParm ("-fullscreen")) {
flags |= SDL_FULLSCREEN;
vid.bpp = 16;
} else
vid.bpp = 8;
if (!(screen = SDL_SetVideoMode(vid.width, vid.height, vid.bpp, flags)))
Sys_Error("VID: Couldn't set video mode: %s\n", SDL_GetError());
Cvar_RegisterVariable (&m_filter);
Cvar_RegisterVariable (&gl_ztrick);
vid.aspect = 1.0;
vid.numpages = 1;
vid.colormap = host_colormap;
vid.fullbright = 256 - LittleLong (*((int *)vid.colormap + 2048));
vid.rowbytes = vid.conrowbytes = vid.width;
vid.recalc_refdef = true;
min_vid_width = vid.width;
printf( "VID_Init: GL_Init starting\n" );
GL_Init();
printf( "VID_Init: GL_Init finished\n" );
SDL_WM_SetCaption("glquake","glquake");
sprintf (gldir, "%s/glquake", com_gamedir);
Sys_mkdir (gldir);
Check_Gamma(palette);
VID_SetPalette (palette);
// Check for 3DFX Extensions and initialize them.
VID_Init8bitPalette();
#else
int pnum, chunk;
byte *cache;
int cachesize;
Uint8 video_bpp;
Uint16 video_w, video_h;
Uint32 flags;
// Load the SDL library
if (SDL_Init(SDL_INIT_VIDEO|SDL_INIT_AUDIO|SDL_INIT_CDROM) < 0)
Sys_Error("VID: Couldn't load SDL: %s", SDL_GetError());
// Set up display mode (width and height)
vid.width = BASEWIDTH;
vid.height = BASEHEIGHT;
vid.maxwarpwidth = WARP_WIDTH;
vid.maxwarpheight = WARP_HEIGHT;
if ((pnum=COM_CheckParm("-winsize")))
{
if (pnum >= com_argc-2)
Sys_Error("VID: -winsize <width> <height>\n");
vid.width = Q_atoi(com_argv[pnum+1]);
vid.height = Q_atoi(com_argv[pnum+2]);
if (!vid.width || !vid.height)
Sys_Error("VID: Bad window width/height\n");
}
// Set video width, height and flags
flags = (SDL_SWSURFACE|SDL_HWPALETTE);
if ( COM_CheckParm ("-fullscreen") )
flags |= SDL_FULLSCREEN;
// Initialize display
if (!(screen = SDL_SetVideoMode(vid.width, vid.height, 8, flags)))
Sys_Error("VID: Couldn't set video mode: %s\n", SDL_GetError());
VID_SetPalette(palette);
SDL_WM_SetCaption("sdlquake","sdlquake");
// now know everything we need to know about the buffer
VGA_width = vid.conwidth = vid.width;
VGA_height = vid.conheight = vid.height;
vid.aspect = ((float)vid.height / (float)vid.width) * (320.0 / 240.0);
vid.numpages = 1;
vid.colormap = host_colormap;
vid.fullbright = 256 - LittleLong (*((int *)vid.colormap + 2048));
VGA_pagebase = vid.buffer = screen->pixels;
VGA_rowbytes = vid.rowbytes = screen->pitch;
vid.conbuffer = vid.buffer;
vid.conrowbytes = vid.rowbytes;
vid.direct = 0;
// allocate z buffer and surface cache
chunk = vid.width * vid.height * sizeof (*d_pzbuffer);
cachesize = D_SurfaceCacheForRes (vid.width, vid.height);
chunk += cachesize;
d_pzbuffer = Hunk_HighAllocName(chunk, "video");
if (d_pzbuffer == NULL)
Sys_Error ("Not enough memory for video mode\n");
// initialize the cache memory
cache = (byte *) d_pzbuffer
+ vid.width * vid.height * sizeof (*d_pzbuffer);
D_InitCaches (cache, cachesize);
#endif
// initialize the mouse
SDL_ShowCursor(0);
}
void VID_Shutdown (void)
{
#ifdef GLQUAKE
SDL_QuitSubSystem(SDL_INIT_VIDEO);
#else
SDL_Quit();
#endif
#endif
}
#ifndef GLQUAKE
void VID_Update (vrect_t *rects)
{
SDL_Rect *sdlrects;
int n, i;
vrect_t *rect;
// Two-pass system, since Quake doesn't do it the SDL way...
// First, count the number of rectangles
n = 0;
for (rect = rects; rect; rect = rect->pnext)
++n;
// Second, copy them to SDL rectangles and update
if (!(sdlrects = (SDL_Rect *)alloca(n*sizeof(*sdlrects))))
Sys_Error("Out of memory");
i = 0;
for (rect = rects; rect; rect = rect->pnext)
{
sdlrects[i].x = rect->x;
sdlrects[i].y = rect->y;
sdlrects[i].w = rect->width;
sdlrects[i].h = rect->height;
++i;
}
SDL_UpdateRects(screen, n, sdlrects);
}
#endif
/*
================
D_BeginDirectRect
================
*/
void D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height)
{
#ifndef GLQUAKE
Uint8 *offset;
if (!screen) return;
if ( x < 0 ) x = screen->w+x-1;
offset = (Uint8 *)screen->pixels + y*screen->pitch + x;
while ( height-- )
{
memcpy(offset, pbitmap, width);
offset += screen->pitch;
pbitmap += width;
}
#endif
}
/*
================
D_EndDirectRect
================
*/
void D_EndDirectRect (int x, int y, int width, int height)
{
#ifndef GLQUAKE
if (!screen) return;
if (x < 0) x = screen->w+x-1;
SDL_UpdateRect(screen, x, y, width, height);
#endif
}
#ifdef GLQUAKE
/*
================
VID_IsFullScreen
================
*/
qboolean VID_IsFullScreen(void) {
return false;
}
static void windowed_mouse_f(struct cvar_s *var) {
}
#endif
/*
================
Sys_SendKeyEvents
================
*/
void Sys_SendKeyEvents(void)
{
SDL_Event event;
int sym, state;
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_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_MOUSEMOTION:
if ( (event.motion.x != (vid.width/2)) ||
(event.motion.y != (vid.height/2)) ) {
mouse_x = event.motion.xrel*10;
mouse_y = event.motion.yrel*10;
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);
}
}
break;
case SDL_QUIT:
CL_Disconnect ();
Host_ShutdownServer(false);
Sys_Quit ();
break;
default:
break;
}
}
}
void IN_Init (void)
{
if ( COM_CheckParm ("-nomouse") )
return;
mouse_x = mouse_y = 0.0;
mouse_avail = 1;
}
void IN_Shutdown (void)
{
mouse_avail = 0;
}
void IN_Commands (void)
{
int i;
int mouse_buttonstate;
if (!mouse_avail) return;
i = SDL_GetMouseState(NULL, NULL);
/* Quake swaps the second and third buttons */
mouse_buttonstate = (i & ~0x06) | ((i & 0x02)<<1) | ((i & 0x04)>>1);
for (i=0 ; i<3 ; i++) {
if ( (mouse_buttonstate & (1<<i)) && !(mouse_oldbuttonstate & (1<<i)) )
Key_Event (K_MOUSE1 + i, true);
if ( !(mouse_buttonstate & (1<<i)) && (mouse_oldbuttonstate & (1<<i)) )
Key_Event (K_MOUSE1 + i, false);
}
mouse_oldbuttonstate = mouse_buttonstate;
}
void IN_Move (usercmd_t *cmd)
{
if (!mouse_avail)
return;
mouse_x *= sensitivity.value;
mouse_y *= sensitivity.value;
if ( (in_strafe.state & 1) || (lookstrafe.value && (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] += m_pitch.value * mouse_y;
if (cl.viewangles[PITCH] > 80)
cl.viewangles[PITCH] = 80;
if (cl.viewangles[PITCH] < -70)
cl.viewangles[PITCH] = -70;
} 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;
}
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unsigned height;
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int bpp;