void
vbeclrscr(gfxpix32 pix)
{
uint8_t *ptr = vbepixadr(0, 0);
long incr = vbescreen.pixsize;
long n = vbescreen.w * vbescreen.h;
long nbpp = vbescreen.nbpp;
long lim;
if (nbpp == 24) {
while (n) {
lim = min(n, 4);
switch (lim) {
case 4:
vbeputpix(pix, &ptr[3 * incr]);
case 3:
vbeputpix(pix, &ptr[2 * incr]);
case 2:
vbeputpix(pix, &ptr[incr]);
case 1:
vbeputpix(pix, ptr);
break;
}
n -= lim;
ptr += lim * incr;
}
}
return;
}
void
vbeclrscr(uint32_t pix)
{
long x;
long y;
for (x = 0 ; x < vbescreen.w ; x++) {
for (y = 0 ; y < vbescreen.h ; y++) {
vbeputpix(pix, x, y);
}
}
return;
}
/* draw character without background (transparent) */
void
vbedrawcharfg(unsigned char c, int x, int y, argb32_t fg, argb32_t bg)
{
int _cy;
int _yofs;
uint8_t *_gp = (uint8_t *)vgafontbuf + ((int)c << 4);
uint8_t _g;
for (_cy = 0 ; _cy < VGAGLYPHH >> 1; _cy++) {
_g = *_gp;
_yofs = y + _cy;
if (_g & 0x01) {
vbeputpix(fg, x + 7, _yofs);
}
if (_g & 0x02) {
vbeputpix(fg, x + 6, _yofs);
}
if (_g & 0x04) {
vbeputpix(fg, x + 5, _yofs);
}
if (_g & 0x08) {
vbeputpix(fg, x + 4, _yofs);
}
if (_g & 0x10) {
vbeputpix(fg, x + 3, _yofs);
}
if (_g & 0x20) {
vbeputpix(fg, x + 2, _yofs);
}
if (_g & 0x40) {
vbeputpix(fg, x + 1, _yofs);
}
if (_g & 0x80) {
vbeputpix(fg, x + 0, _yofs);
}
_gp++;
}
return;
}
