func cls() {
//
Colours(col.ScreenF, col.ScreenB)
if underX {
xker.Clr(0, 0, nX[mode], nY[mode])
return
}
if !visible {
return
}
B := cc(col.Code(col.ScreenB))
l := int(colourdepth) * int(nX[mode])
a := 0
for y := 0; y < int(nY[mode]); y++ {
for x := 0; x < int(nX[mode]); x++ {
copy(emptyBackground[a:a+int(colourdepth)], B)
a += int(colourdepth)
}
}
a = 0
for y := 0; y < int(nY[mode]); y++ {
copy(fbmem[a:a+l], emptyBackground)
copy(fbcop[a:a+l], emptyBackground)
a += int(XX) * int(colourdepth)
}
setColours(col.ScreenB)
}
func p6Dec(x, y uint, p []byte) []byte {
//
w, h, fix, n := p6dec(p)
if w == 0 || h == 0 || fix != 255 {
return nil
}
i := 4 * clz
b := make([]byte, Codelen(w, h))
copy(b[:i], enc(x, y, w, h))
if underX {
xker.P6Decode(x, y, w, h, p[n:], b[i:])
} else {
j := int(n)
di, dj := int(colourdepth), col.P6
var c col.Colour
for y := uint(0); y < h; y++ {
for x := uint(0); x < w; x++ {
col.Decode(&c, p[j:j+dj])
copy(b[i:i+di], cc(col.Code(c)))
i += di
j += dj
}
}
}
return b
}
func P6Decode(x, y, w, h uint, p, b []byte) {
//
var c col.Colour
i, j := uint(0), uint(0)
di := uint(clz)
for y := uint(0); y < h; y++ {
for x := uint(0); x < w; x++ {
col.Decode(&c, p[j:j+col.P6])
copy(b[i:i+di], obj.Encode(col.Code(c)))
i += di
j += col.P6
}
}
}
func cc(c col.Colour) C.ulong {
//
return C.ulong(col.Code(c))
}