void GrPatternDrawString(void *text,int length,int x,int y,
const GrTextOption *opt,GrPattern *p)
{
GRX_ENTER();
_GrDrawString(text,length,x,y,opt,p,PatternFilledBmp);
GRX_LEAVE();
}
static INLINE
void drawpixel(int x,int y,GrxColor color)
{
GR_int32u offs;
char *p0,*p1,*p2;
GRX_ENTER();
offs = FOFS(x,y,CURC->gc_line_offset);
p0 = &CURC->gc_base_address.plane0[offs];
p1 = &CURC->gc_base_address.plane1[offs];
p2 = &CURC->gc_base_address.plane2[offs];
switch(C_OPER(color)) {
case C_XOR: poke_b_xor(p0,RD24BYTE(color,0));
poke_b_xor(p1,RD24BYTE(color,1));
poke_b_xor(p2,RD24BYTE(color,2));
break;
case C_OR: poke_b_or(p0,RD24BYTE(color,0));
poke_b_or(p1,RD24BYTE(color,1));
poke_b_or(p2,RD24BYTE(color,2));
break;
case C_AND: poke_b_and(p0,RD24BYTE(color,0));
poke_b_and(p1,RD24BYTE(color,1));
poke_b_and(p2,RD24BYTE(color,2));
break;
default: poke_b(p0,RD24BYTE(color,0));
poke_b(p1,RD24BYTE(color,1));
poke_b(p2,RD24BYTE(color,2));
break;
}
GRX_LEAVE();
}
static int detect(void)
{
int res;
GRX_ENTER();
res = SDL_WasInit(SDL_INIT_VIDEO) || SDL_Init(SDL_INIT_VIDEO) == 0;
GRX_RETURN(res);
}
void _GrFrDrvGenericBitBlt(GrxFrame *dst,int dx,int dy,GrxFrame *src,int x,int y,int w,int h,GrxColor op)
{
GrxFrame csave;
GrxColor (*readpix)(GrxFrame *,int,int);
void (*drawpix)(int,int,GrxColor);
GrxColor skipc;
int step;
GRX_ENTER();
readpix = src->driver->readpixel;
drawpix = dst->driver->drawpixel;
skipc = op ^ GRX_COLOR_MODE_IMAGE;
step = 1;
op &= GRX_COLOR_MODE_MASK;
sttcopy(&csave,&CURC->frame);
sttcopy(&CURC->frame,dst);
if((dy > y) || ((dy == y) && (dx > x))) {
x += (w - 1); dx += (w - 1);
y += (h - 1); dy += (h - 1);
step = (-1);
}
do {
int dxx = dx,xx = x,ww = w;
do {
GrxColor c = (*readpix)(src,xx,y);
if(c != skipc) (*drawpix)(dxx,dy,(c | op));
dxx += step; xx += step;
} while(--ww > 0);
dy += step; y += step;
} while(--h > 0);
sttcopy(&CURC->frame,&csave);
GRX_LEAVE();
}
GrVideoMode * _gr_selectmode(GrVideoDriver *drv,int w,int h,int bpp,
int txt,unsigned int *ep)
{
# define ERROR(des,act) ((des > act) ? ((des - act) + 20000) : (act - des))
int n;
unsigned int cerr,serr,err[2];
GrVideoMode *best,*mp;
GRX_ENTER();
best = NULL;
mp = drv->modes;
for(n = drv->nmodes; --n >= 0; mp++) {
if(!mp->present) continue;
if(!mp->extinfo) continue;
if((mp->extinfo->mode != GR_frameText) ? txt : !txt) continue;
cerr = ERROR(bpp,mp->bpp);
serr = ERROR(w,mp->width) + ERROR(h,mp->height);
if(((ep) ? FALSE : ((ep = err),TRUE)) ||
((cerr < ep[0])) ||
((cerr == ep[0]) && (serr < ep[1]))) {
best = mp;
if (!cerr && !serr) break;
ep[0] = cerr;
ep[1] = serr;
}
}
if(drv->inherit) {
mp = (drv->inherit->selectmode) (drv->inherit,w,h,bpp,txt,ep);
if(mp) best = mp;
}
GRX_RETURN(best);
}
void drawhline(int x,int y,int w,GrxColor c)
{
GRX_ENTER();
w += x;
do { drawpixel(x,y,c); } while(++x != w);
GRX_LEAVE();
}
static void PatternFilledBmp(int x,int y,int w,int h,int ox, int oy,
char *bmp,int pitch,int start,
GrColor fg,GrColor bg,GrPattern *p)
{
GRX_ENTER();
_GrFillBitmapPattern(x,y,w,h,bmp,pitch,start,p,bg);
GRX_LEAVE();
}
void _GR_swap16(GR_int16 *w) {
GR_int16 res;
GRX_ENTER();
res = SWAPBYTE(GR_int16,*w,1,0);
res |= SWAPBYTE(GR_int16,*w,0,1);
*w = res;
GRX_LEAVE();
}
static void swapbytes(GR_int8 *b1, GR_int8 *b2) {
GR_int8 b;
GRX_ENTER();
b = peek_b(b1);
poke_b(b1, peek_b(b2));
poke_b(b2, b);
GRX_LEAVE();
}
void _GR_swap64(GR_int64 *h) {
GRX_ENTER();
swapbytes(((GR_int8 *)h) , ((GR_int8 *)h)+7);
swapbytes(((GR_int8 *)h)+1, ((GR_int8 *)h)+6);
swapbytes(((GR_int8 *)h)+2, ((GR_int8 *)h)+5);
swapbytes(((GR_int8 *)h)+3, ((GR_int8 *)h)+4);
GRX_LEAVE();
}
void _GR_swap32(GR_int32 *l) {
GR_int32 res;
GRX_ENTER();
res = SWAPBYTE(GR_int32,*l,3,0);
res |= SWAPBYTE(GR_int16,*l,0,3);
res |= SWAPBYTE(GR_int16,*l,2,1);
res |= SWAPBYTE(GR_int16,*l,1,2);
*l = res;
GRX_LEAVE();
}
void drawpattern(int x,int y,int w,char patt,GrColor fg,GrColor bg)
{
GR_int8u mask;
GRX_ENTER();
mask = 0x80;
w += x;
do {
drawpixel(x,y,(patt & mask) ? fg : bg);
if((mask >>= 1) == 0) mask = 0x80;
} while(++x != w);
GRX_LEAVE();
}
static int buildframedriver(GrVideoMode *mp,GrFrameDriver *drv)
{
GrFrameDriver *d1, *d2;
int res = TRUE;
GRX_ENTER();
res = TRUE;
d1 = _GrFindFrameDriver(mp->extinfo->mode);
d2 = mp->extinfo->drv;
if(d1) sttcopy(drv,d1);
if(d2) {
int compl = TRUE;
# define MERGE(F) if(d2->F) drv->F = d2->F; else compl = FALSE;
MERGE(readpixel);
MERGE(drawpixel);
MERGE(drawhline);
MERGE(drawvline);
MERGE(drawblock);
MERGE(drawline);
MERGE(drawbitmap);
MERGE(drawpattern);
MERGE(bitblt);
MERGE(bltv2r);
MERGE(bltr2v);
MERGE(getindexedscanline);
MERGE(putscanline);
if(compl) {
memcpy(drv,d2,offsetof(GrFrameDriver,readpixel));
goto done; /* TRUE */
}
if(!d1) {
res = FALSE;
goto done;
}
if((d2->mode == d1->mode) &&
(d2->rmode == d1->rmode) &&
(d1->is_video ? d2->is_video : !d2->is_video) &&
(d2->row_align <= d1->row_align) && !(d1->row_align % d2->row_align) &&
(d2->num_planes == d1->num_planes) &&
(d2->max_plane_size >= d1->max_plane_size) &&
(d2->bits_per_pixel == d1->bits_per_pixel)) {
drv->init = d2->init ? d2->init : d1->init;
goto done; /* TRUE */
}
}
if(!d1) {
res = FALSE;
goto done;
}
sttcopy(drv,d1);
done:
GRX_RETURN(res);
}
static INLINE
GrxColor readpixel(GrxFrame *c,int x,int y)
{
GR_int32u offs;
GrxColor pix;
GRX_ENTER();
offs = FOFS(x,y,c->line_offset);
pix = 0;
WR24BYTE(pix,0,peek_b(&c->base_address.plane0[offs]));
WR24BYTE(pix,1,peek_b(&c->base_address.plane1[offs]));
WR24BYTE(pix,2,peek_b(&c->base_address.plane2[offs]));
GRX_RETURN(pix);
}
static void bitblit(GrxFrame *dst,int dx,int dy,
GrxFrame *src,int sx,int sy,
int w,int h,GrxColor op)
{
int pl;
GRX_ENTER();
if(grx_color_get_mode(op) == GRX_COLOR_MODE_IMAGE)
bitblt(dst,dx,dy,src,sx,sy,w,h,op);
else
for (pl=0; pl < 3; ++pl)
_GrFrDrvPackedBitBltR2Rpl(dst,dx,dy,src,sx,sy,w,h,op,pl);
GRX_LEAVE();
}
static void w32_drawblock(int x, int y, int w, int h, GrxColor color)
{
RECT Rect;
GRX_ENTER();
drawblock(x, y, w, h, color);
Rect.left = x;
Rect.top = y;
Rect.right = x + w;
Rect.bottom = y + h;
InvalidateRect(hGRXWnd, &Rect, FALSE);
GRX_LEAVE();
}
static void w32_bitblt(GrxFrame *dst, int dx, int dy, GrxFrame *src,
int sx, int sy, int w, int h, GrxColor op)
{
RECT Rect;
GRX_ENTER();
bitblt(dst, dx, dy, src, sx, sy, w, h, op);
Rect.left = dx;
Rect.top = dy;
Rect.right = dx + w;
Rect.bottom = dy + h;
InvalidateRect(hGRXWnd, &Rect, FALSE);
GRX_LEAVE();
}
static int init(GrVideoMode *mp)
{
GRX_ENTER();
/* set write mode 0 */
outport_w(VGA_GR_CTRL_PORT,((0 << 8) | VGA_MODE_REG));
/* don't care register to 0 */
outport_w(VGA_GR_CTRL_PORT,((0 << 8) | VGA_COLOR_DONTC_REG));
/* enable all 4 planes for writing */
outport_w(VGA_SEQUENCER_PORT,((0x0f << 8) | VGA_WRT_PLANE_ENB_REG));
/* enable all 4 planes for set/reset */
outport_w(VGA_GR_CTRL_PORT,((0x0f << 8) | VGA_SET_RESET_ENB_REG));
lastcolor = (-1L);
GRX_RETURN(TRUE);
}
static void w32_drawbitmap(int x, int y, int w, int h, unsigned char *bmp,
int pitch, int start, GrxColor fg, GrxColor bg)
{
RECT Rect;
GRX_ENTER();
drawbitmap(x, y, w, h, bmp, pitch, start, fg, bg);
Rect.left = x;
Rect.top = y;
Rect.right = x + w;
Rect.bottom = y + h;
InvalidateRect(hGRXWnd, &Rect, FALSE);
GRX_LEAVE();
}
static void w32_drawpattern(int x, int y, int w, unsigned char patt,
GrxColor fg, GrxColor bg)
{
RECT Rect;
GRX_ENTER();
drawpattern(x, y, w, patt, fg, bg);
Rect.left = x;
Rect.top = y;
Rect.right = x + w;
Rect.bottom = y + 1;
InvalidateRect(hGRXWnd, &Rect, FALSE);
GRX_LEAVE();
}
static void reset(void)
{
GRX_ENTER();
#if defined(__WIN32__)
_SGrActive = TRUE;
if(_SGrBackup != NULL) free(_SGrBackup);
_SGrBackup = NULL;
#endif
if(_SGrScreen != NULL)
if(SDL_MUSTLOCK(_SGrScreen)) SDL_UnlockSurface(_SGrScreen);
if(SDL_WasInit(SDL_INIT_VIDEO)) SDL_Quit();
_SGrScreen = NULL;
GRX_LEAVE();
}
void _GR_swap64(GR_int64 *h) {
GR_int64 res;
GRX_ENTER();
res = SWAPBYTE(GR_int64,*h,7,0);
res |= SWAPBYTE(GR_int64,*h,0,7);
res |= SWAPBYTE(GR_int64,*h,6,1);
res |= SWAPBYTE(GR_int64,*h,1,6);
res |= SWAPBYTE(GR_int64,*h,5,2);
res |= SWAPBYTE(GR_int64,*h,2,5);
res |= SWAPBYTE(GR_int64,*h,4,3);
res |= SWAPBYTE(GR_int64,*h,3,4);
*h = res;
GRX_LEAVE();
}
static void w32_drawpixel(int x, int y, GrxColor color)
{
HDC hDC;
COLORREF c;
GRX_ENTER();
drawpixel(x, y, color);
c = GetPixel ( hDCMem, x, y );
hDC = GetDC ( hGRXWnd );
SetPixelV ( hDC, x, y, c );
ReleaseDC ( hGRXWnd, hDC );
GRX_LEAVE();
}
static INLINE
void drawpixel(int x,int y,GrColor color)
{
char *ptr;
GRX_ENTER();
ptr = &CURC->gc_baseaddr[0][FOFS(x,y,SCRN->gc_lineoffset)];
setup_far_selector(CURC->gc_selector);
if(lastcolor != color) {
outport_w(VGA_GR_CTRL_PORT,writeops[C_OPER(color) & 3]);
outport_w(VGA_GR_CTRL_PORT,((((int)color & 0x0f) << 8) | VGA_SET_RESET_REG));
lastcolor = color;
}
outport_w(VGA_GR_CTRL_PORT,((0x8000U >> (x & 7)) | VGA_BIT_MASK_REG));
poke_b_f_or(ptr,0);
GRX_LEAVE();
}
static INLINE
GrColor readpixel(GrFrame *c,int x,int y)
{
char *ptr;
unsigned mask, pixval;
GRX_ENTER();
ptr = &SCRN->gc_baseaddr[0][FOFS(x,y,SCRN->gc_lineoffset)];
mask= 0x80U >> (x &= 7);
setup_far_selector(SCRN->gc_selector);
outport_w(VGA_GR_CTRL_PORT,((3 << 8) | VGA_RD_PLANE_SEL_REG));
pixval = (peek_b_f(ptr) & mask);
outport_b(VGA_GR_CTRL_DATA,2);
pixval = (peek_b_f(ptr) & mask) | (pixval << 1);
outport_b(VGA_GR_CTRL_DATA,1);
pixval = (peek_b_f(ptr) & mask) | (pixval << 1);
outport_b(VGA_GR_CTRL_DATA,0);
pixval = (peek_b_f(ptr) & mask) | (pixval << 1);
lastcolor = (-1L);
GRX_RETURN((GrColor)(pixval >> (7 - x)));
}
void GrPatternDrawChar(long chr,int x,int y,const GrTextOption *opt,GrPattern *p)
{
char cbuff[2];
short sbuff[2];
GRX_ENTER();
switch(opt->txo_chrtype) {
case GR_UTF8_TEXT:
GrPatternDrawString((void *)&chr,1,x,y,opt,p);
break;
case GR_WORD_TEXT:
case GR_ATTR_TEXT:
sbuff[0] = chr;
GrPatternDrawString(sbuff,1,x,y,opt,p);
break;
default:
cbuff[0] = chr;
GrPatternDrawString(cbuff,1,x,y,opt,p);
break;
}
GRX_LEAVE();
}
static void drawhline(int x,int y,int w,GrxColor color) {
int copr, pl;
GR_int32u offs;
GRX_ENTER();
copr = C_OPER(color);
offs = FOFS(x,y,CURC->gc_line_offset);
for (pl=0; pl < 3; ++pl) {
if(DOCOLOR8(color,copr)) {
GR_repl cval = freplicate_b(color);
char *pp = &GRX_FRAME_MEMORY_PLANE(&CURC->gc_base_address,pl)[offs];
int ww = w;
switch(copr) {
case C_XOR: repfill_b_xor(pp,cval,ww); break;
case C_OR: repfill_b_or( pp,cval,ww); break;
case C_AND: repfill_b_and(pp,cval,ww); break;
default: repfill_b( pp,cval,ww); break;
}
}
color >>= 8;
}
GRX_LEAVE();
}
void w32_putscanline(int x, int y, int w,
const GrxColor *scl, GrxColor op )
{
GrxColor skipc;
RECT Rect;
GRX_ENTER();
Rect.left = x;
Rect.top = y;
Rect.right = x + w;
Rect.bottom = y + 1;
skipc = op ^ GRX_COLOR_MODE_IMAGE;
op &= GRX_COLOR_MODE_MASK;
for ( w += x; x < w; ++x) {
GrxColor c = *(scl++);
if (c != skipc) drawpixel(x, y, (c|op));
}
InvalidateRect(hGRXWnd, &Rect, FALSE);
GRX_LEAVE();
}
static void w32_drawline(int x, int y, int dx, int dy, GrxColor color)
{
RECT Rect;
GRX_ENTER();
drawline(x, y, dx, dy, color);
if (dx > 0 ) {
Rect.left = x;
Rect.right = x + dx + 1;
} else {
Rect.left = x + dx;
Rect.right = x + 1;
}
if (dy > 0 ) {
Rect.top = y;
Rect.bottom = y + dy + 1;
} else {
Rect.top = y + dy;
Rect.bottom = y + 1;
}
InvalidateRect(hGRXWnd, &Rect, FALSE);
GRX_LEAVE();
}
static void drawvline(int x,int y,int h,GrxColor color)
{
int copr, pl;
GR_int32u offs;
unsigned lwdt;
GRX_ENTER();
copr = C_OPER(color);
lwdt = CURC->gc_line_offset;
offs = FOFS(x,y,lwdt);
for (pl=0; pl < 3; ++pl) {
if(DOCOLOR8(color,copr)) {
char *pp = &GRX_FRAME_MEMORY_PLANE(&CURC->gc_base_address,pl)[offs];
int hh = h;
switch(copr) {
case C_XOR: colfill_b_xor(pp,lwdt,(GR_int8u)color,hh); break;
case C_OR: colfill_b_or( pp,lwdt,(GR_int8u)color,hh); break;
case C_AND: colfill_b_and(pp,lwdt,(GR_int8u)color,hh); break;
default: colfill_b( pp,lwdt,(GR_int8u)color,hh); break;
}
}
color >>= 8;
}
GRX_LEAVE();
}