void cyber_select_alpha_src(int src)
{
cyber_grphw(0xfa, 0);
cyber_out8(cyber_mmio, SEQINDEX, 0x49);
cyber_out8(cyber_mmio, SEQDATA, (cyber_in8(cyber_mmio, SEQDATA) & ~0x60) | (src << 5));
/*if alpha source comes form Overlay2, we need to disable Overlay2 color key function*/
if(src == ALPHA_OVERLAY2) {
/*Disable Overlay 2 in Source B path*/
cyber_out8(cyber_mmio, GRAINDEX, 0xfa);
cyber_out8(cyber_mmio, GRADATA, 0x08);
cyber_out8(cyber_mmio, SEQINDEX, 0x4f);
cyber_out8(cyber_mmio, SEQDATA, cyber_in8(cyber_mmio, SEQDATA) | 0x08);
/*Disable V2 generally */
cyber_out8(cyber_mmio, GRADATA, 0x20);
cyber_out8(cyber_mmio, SEQINDEX, 0x47);
cyber_out8(cyber_mmio, SEQDATA, cyber_in8(cyber_mmio, SEQDATA) | 0x02);
cyber_out8(cyber_mmio, GRADATA, 0x00);
}
}
void cyber_cleanup_alpha(void)
{
int i;
cyber_grphw(0xfa, 0);
for (i=0; i<16; i++) {
if (i == 0x0A) {/*Don't clean up SyncLock video path if there is one*/
cyber_out8(cyber_mmio, SEQINDEX, 0x40 + i);
cyber_out8(cyber_mmio, SEQDATA, cyber_in8(cyber_mmio, SEQDATA) & 0x08);
}
else {
cyber_out8(cyber_mmio, SEQINDEX, 0x40 + i);
cyber_out8(cyber_mmio, SEQDATA, 0x00);
}
}
cyber_grphw(0xfa, 8);
for (i=0; i<16; i++) {
if(i==0x0F) {/*Just in case there is a SyncLock video*/
cyber_out8(cyber_mmio, SEQINDEX, 0x40 + i);
cyber_out8(cyber_mmio, SEQDATA, 0x00);
cyber_out8(cyber_mmio, SEQDATA, cyber_in8(cyber_mmio, SEQDATA) | 0xC0);
}
else {
cyber_out8(cyber_mmio, SEQINDEX, 0x40 + i);
cyber_out8(cyber_mmio, SEQDATA, 0x00);
}
}
cyber_grphw(0xfa, 0x10);
for (i=0; i<16; i++) {
cyber_out8(cyber_mmio, SEQINDEX, 0x40 + i);
cyber_out8(cyber_mmio, SEQDATA, 0x00);
}
cyber_grphw(0xfa, 0x18);
for (i=0; i<16; i++) {
cyber_out8(cyber_mmio, SEQINDEX, 0x40 + i);
cyber_out8(cyber_mmio, SEQDATA, 0x00);
}
cyber_grphw(0xfa, 0x20);
for (i=0; i<16; i++) {
cyber_out8(cyber_mmio, SEQINDEX, 0x40 + i);
cyber_out8(cyber_mmio, SEQDATA, 0x00);
}
cyber_out8(cyber_mmio, SEQINDEX, 0xA6);
/*for video capture*/
cyber_out8(cyber_mmio, SEQDATA, cyber_in8(cyber_mmio, SEQDATA) & 0xF0);
#if 0
/*for 8-bit Index mode*/
if(bEnabled8Bit) /*if we are in 8-bit alpha-blending mode, remember to disable it*/
EnablePaletteMode(0);
#endif
cyber_out8(cyber_mmio, GRAINDEX, 0xfa);
cyber_out8(cyber_mmio, GRADATA, 0x80);
cyber_out8(cyber_mmio, GRAINDEX, 0xe0);
cyber_out8(cyber_mmio, GRADATA, cyber_in8(cyber_mmio, 0x03cf) | 0x04);
cyber_out8(cyber_mmio, GRAINDEX, 0xfa);
cyber_out8(cyber_mmio, GRADATA, 0x00);
}
