ref: 7b70a3e6d9caf58d84792c9c2ddd6547a13b7843
dir: /draw.c/
#include "quakedef.h"
typedef struct {
vrect_t rect;
int width;
int height;
pixel_t *ptexpixels;
int rowbytes;
} rectdesc_t;
qpic_t *draw_disc;
static rectdesc_t r_rectdesc;
static pixel_t draw_chars[128*128]; // 8*8 graphic characters
static qpic_t *draw_backtile;
Wad *wad_gfx;
//=============================================================================
/* Support Routines */
typedef struct cachepic_s
{
char name[Npath];
mem_user_t cache;
} cachepic_t;
#define MAX_CACHED_PICS 128
static cachepic_t menu_cachepics[MAX_CACHED_PICS];
static int menu_numcachepics;
/*
================
Draw_CachePic
================
*/
qpic_t *Draw_CachePic (char *path)
{
cachepic_t *pic;
int i, n;
qpic_t *q;
for (pic=menu_cachepics, i=0 ; i<menu_numcachepics ; pic++, i++)
if (!strcmp (path, pic->name))
break;
if (i == menu_numcachepics)
{
if (menu_numcachepics == MAX_CACHED_PICS)
fatal ("menu_numcachepics == MAX_CACHED_PICS");
menu_numcachepics++;
strcpy (pic->name, path);
}
q = Cache_Check(&pic->cache);
if(q)
return q;
// load the pic from disk
q = loadcachelmp(path, &pic->cache);
if(q == nil)
fatal("Draw_CachePic: %s", lerr());
q->width = LittleLong(q->width);
q->height = LittleLong(q->height);
n = q->width*q->height;
q = Cache_Realloc(&pic->cache, sizeof(*q)+n*sizeof(pixel_t));
torgbx((byte*)q->pixels, q->pixels, n);
return q;
}
qpic_t *
Draw_PicFromWad(char *name)
{
return W_ReadQpic(wad_gfx, name, nil);
}
/*
===============
Draw_Init
===============
*/
void Draw_Init (void)
{
int i;
if(W_ReadPixels(wad_gfx, "conchars", draw_chars, nelem(draw_chars)) < 0)
fatal("Draw_Init: %s", lerr());
/* black is transparent */
for(i = 0; i < nelem(draw_chars); i++){
if((draw_chars[i] & 0xffffff) == 0)
draw_chars[i] = 0;
}
if((draw_disc = Draw_PicFromWad("disc")) == nil)
fatal("Draw_Init: %s", lerr());
if((draw_backtile = Draw_PicFromWad("backtile")) == nil)
fatal("Draw_Init: %s", lerr());
r_rectdesc.width = draw_backtile->width;
r_rectdesc.height = draw_backtile->height;
r_rectdesc.ptexpixels = draw_backtile->pixels;
r_rectdesc.rowbytes = draw_backtile->width;
}
/*
================
Draw_Character
Draws one 8*8 graphics character with 0 being transparent.
It can be clipped to the top of the screen to allow the console to be
smoothly scrolled off.
================
*/
void Draw_Character (int x, int y, int num)
{
pixel_t *dest, *source;
int drawline, row, col;
num &= 255;
if (y <= -8)
return; // totally off screen
#ifdef PARANOID
if (y > vid.height - 8 || x < 0 || x > vid.width - 8)
fatal ("Con_DrawCharacter: (%d, %d)", x, y);
if (num < 0 || num > 255)
fatal ("Con_DrawCharacter: char %d", num);
#endif
row = num>>4;
col = num&15;
source = draw_chars + (row<<10) + (col<<3);
if (y < 0)
{ // clipped
drawline = 8 + y;
source -= 128*y;
y = 0;
}
else
drawline = 8;
dest = vid.conbuffer + y*vid.conrowbytes + x;
while(drawline--){
if(source[0]) dest[0] = source[0];
if(source[1]) dest[1] = source[1];
if(source[2]) dest[2] = source[2];
if(source[3]) dest[3] = source[3];
if(source[4]) dest[4] = source[4];
if(source[5]) dest[5] = source[5];
if(source[6]) dest[6] = source[6];
if(source[7]) dest[7] = source[7];
source += 128;
dest += vid.conrowbytes;
}
}
/*
================
Draw_String
================
*/
void Draw_String (int x, int y, char *str)
{
while (*str)
{
Draw_Character (x, y, *str);
str++;
x += 8;
}
}
/*
=============
Draw_Pic
=============
*/
void Draw_Pic (int x, int y, qpic_t *pic)
{
pixel_t *dest, *source;
int px, py;
if ((x < 0) ||
(x + pic->width > vid.width) ||
(y < 0) ||
(y + pic->height > vid.height))
{
fatal ("Draw_Pic: bad coordinates");
}
source = pic->pixels;
dest = vid.buffer + y * vid.rowbytes + x;
for(py = 0; py < pic->height; py++){
for(px = 0; px < pic->width; px++){
if(opaque(source[px]))
dest[px] = source[px];
}
dest += vid.rowbytes;
source += pic->width;
}
}
/*
=============
Draw_TransPic
=============
*/
void Draw_TransPic (int x, int y, qpic_t *pic)
{
pixel_t *dest, *source, tpix;
int v, u;
if (x < 0 || y < 0 || x+pic->width > vid.width || y+pic->height > vid.height)
fatal ("Draw_TransPic: bad coordinates");
source = pic->pixels;
dest = vid.buffer + y * vid.rowbytes + x;
if(pic->width & 7){ // general
for(v=0; v<pic->height; v++){
for(u=0; u<pic->width; u++)
if(opaque(tpix = source[u]))
dest[u] = tpix;
dest += vid.rowbytes;
source += pic->width;
}
}else{ // unwound
for(v=0; v<pic->height; v++){
for(u=0; u<pic->width; u+=8){
if(opaque(tpix = source[u]))
dest[u] = tpix;
if(opaque(tpix = source[u+1]))
dest[u+1] = tpix;
if(opaque(tpix = source[u+2]))
dest[u+2] = tpix;
if(opaque(tpix = source[u+3]))
dest[u+3] = tpix;
if(opaque(tpix = source[u+4]))
dest[u+4] = tpix;
if(opaque(tpix = source[u+5]))
dest[u+5] = tpix;
if(opaque(tpix = source[u+6]))
dest[u+6] = tpix;
if(opaque(tpix = source[u+7]))
dest[u+7] = tpix;
}
dest += vid.rowbytes;
source += pic->width;
}
}
}
/*
=============
Draw_TransPicTranslate
=============
*/
void Draw_TransPicTranslate (int x, int y, qpic_t *pic, byte *translation)
{
pixel_t *dest, *source, tpix;
int v, u;
if (x < 0 || y < 0 || x+pic->width > vid.width || y+pic->height > vid.height)
fatal ("Draw_TransPic: bad coordinates");
source = pic->pixels;
dest = vid.buffer + y * vid.rowbytes + x;
if (pic->width & 7){ // general
for(v=0; v<pic->height; v++){
for(u=0; u<pic->width; u++)
if(opaque(tpix = source[u]))
dest[u] = tpix;
dest += vid.rowbytes;
source += pic->width;
}
}else{ // unwound
for(v=0; v<pic->height; v++){
for(u=0; u<pic->width; u+=8){
if(opaque(tpix = source[u]))
dest[u] = tpix;
if(opaque(tpix = source[u+1]))
dest[u+1] = tpix;
if(opaque(tpix = source[u+2]))
dest[u+2] = tpix;
if(opaque(tpix = source[u+3]))
dest[u+3] = tpix;
if(opaque(tpix = source[u+4]))
dest[u+4] = tpix;
if(opaque(tpix = source[u+5]))
dest[u+5] = tpix;
if(opaque(tpix = source[u+6]))
dest[u+6] = tpix;
if(opaque(tpix = source[u+7]))
dest[u+7] = tpix;
}
dest += vid.rowbytes;
source += pic->width;
}
}
}
static void Draw_CharToConback (int num, pixel_t *dest)
{
int row, col, drawline, x;
pixel_t *source;
row = num>>4;
col = num&15;
source = draw_chars + (row<<10) + (col<<3);
drawline = 8;
while (drawline--)
{
for (x=0 ; x<8 ; x++)
if((source[x] & 0xffffff) != 0)
dest[x] = source[x];
source += 128;
dest += 320;
}
}
/*
================
Draw_ConsoleBackground
================
*/
void Draw_ConsoleBackground (int lines)
{
int x, y, v, n;
pixel_t *src, *dest;
int f, fstep;
qpic_t *conback;
char ver[100];
conback = Draw_CachePic ("gfx/conback.lmp");
// hack the version number directly into the pic
sprint (ver, "(9)quake %4.2f", (float)VERSION);
dest = conback->pixels + 320*186 + 320 - 11 - 8*strlen(ver);
n = strlen(ver);
for (x=0 ; x<n ; x++)
Draw_CharToConback (ver[x], dest+(x<<3));
dest = vid.conbuffer;
for(y=0; y<lines; y++, dest+=vid.conrowbytes){
v = (vid.conheight - lines + y) * 200 / vid.conheight;
src = conback->pixels + v * 320;
if(vid.conwidth == 320)
memcpy(dest, src, vid.conwidth*sizeof(pixel_t));
else{
f = 0;
fstep = 320 * 0x10000 / vid.conwidth;
for(x=0; x<(int)vid.conwidth; x+=4){
dest[x] = src[f>>16]; f += fstep;
dest[x+1] = src[f>>16]; f += fstep;
dest[x+2] = src[f>>16]; f += fstep;
dest[x+3] = src[f>>16]; f += fstep;
}
}
}
}
/*
==============
R_DrawRect8
==============
*/
void R_DrawRect8 (vrect_t *prect, int rowbytes, pixel_t *psrc, int transparent)
{
pixel_t t, *pdest;
int i, j, srcdelta, destdelta;
pdest = vid.buffer + (prect->y * vid.rowbytes) + prect->x;
srcdelta = rowbytes - prect->width;
destdelta = vid.rowbytes - prect->width;
if (transparent)
{
for (i=0 ; i<prect->height ; i++){
for (j=0 ; j<prect->width ; j++){
if(opaque(t = *psrc))
*pdest = t;
psrc++;
pdest++;
}
psrc += srcdelta;
pdest += destdelta;
}
}else{
for (i=0 ; i<prect->height ; i++){
memcpy (pdest, psrc, prect->width*sizeof(pixel_t));
psrc += rowbytes;
pdest += vid.rowbytes;
}
}
}
/*
=============
Draw_TileClear
This repeats a 64*64 tile graphic to fill the screen around a sized down
refresh window.
=============
*/
void Draw_TileClear (int x, int y, int w, int h)
{
int width, height, tileoffsetx, tileoffsety;
pixel_t *psrc;
vrect_t vr;
r_rectdesc.rect.x = x;
r_rectdesc.rect.y = y;
r_rectdesc.rect.width = w;
r_rectdesc.rect.height = h;
vr.y = r_rectdesc.rect.y;
height = r_rectdesc.rect.height;
tileoffsety = vr.y % r_rectdesc.height;
while (height > 0)
{
vr.x = r_rectdesc.rect.x;
width = r_rectdesc.rect.width;
if (tileoffsety != 0)
vr.height = r_rectdesc.height - tileoffsety;
else
vr.height = r_rectdesc.height;
if (vr.height > height)
vr.height = height;
tileoffsetx = vr.x % r_rectdesc.width;
while (width > 0)
{
if (tileoffsetx != 0)
vr.width = r_rectdesc.width - tileoffsetx;
else
vr.width = r_rectdesc.width;
if (vr.width > width)
vr.width = width;
psrc = r_rectdesc.ptexpixels +
(tileoffsety * r_rectdesc.rowbytes) + tileoffsetx;
R_DrawRect8(&vr, r_rectdesc.rowbytes, psrc, 0);
vr.x += vr.width;
width -= vr.width;
tileoffsetx = 0; // only the left tile can be left-clipped
}
vr.y += vr.height;
height -= vr.height;
tileoffsety = 0; // only the top tile can be top-clipped
}
}
/*
=============
Draw_Fill
Fills a box of pixels with a single color
=============
*/
void Draw_Fill (int x, int y, int w, int h, pixel_t c)
{
pixel_t *dest;
int u, v;
dest = vid.buffer + y*vid.rowbytes + x;
for(v=0; v<h; v++, dest+=vid.rowbytes)
for(u=0; u<w; u++)
dest[u] = c;
}
/*
================
Draw_FadeScreen
================
*/
void Draw_FadeScreen (void)
{
int x,y;
pixel_t *pbuf;
for (y=0 ; y<vid.height ; y++)
{
int t;
pbuf = vid.buffer + vid.rowbytes*y;
t = (y & 1) << 1;
for (x=0 ; x<vid.width ; x++)
{
if ((x & 3) != t)
pbuf[x] = 0;
}
}
}