lda #%11111111 sbx #%10000000 bcs .x1 eor #%01111111 eor pixels,y sta pixels,y iny lda #%01111111 .x1 sbx #%01000000 bcs .x2 eor #%00111111 eor pixels,y sta pixels,y iny lda #%00111111 .x2 sbx #%00100000 bcs .x3 . . .
you can only get away with dots/bobs without perspective imho.
I think you are aiming simply too high, your methods of doing 3d actually represent the state of the art way of doing it on the c64, you cant do it much faster. 98% of c64 demos doing 3d do it slower than how you already do it.
