English Amiga Board - View Single Post - Really DUMB stuff you learned/unlearned recently

dodke · 31 October 2019, 17:28

I've released a few AGA demos that didn't use the AGA fetch modes. They had mainly c2p effects, no sprites or hw scrolling, so there was no technical reason I couldn't use 4x fetch.
For example this demo: https://www.pouet.net/prod.php?which=69702 runs about 10% faster with this fixed.
In other cases like when using blitter, on slow CPUs etc the difference can be much bigger.

So, on AGA, always use 4x if you can.

31 October 2019, 17:28	#6
dodke Registered User Join Date: Feb 2018 Location: London / UK Posts: 112	I've released a few AGA demos that didn't use the AGA fetch modes. They had mainly c2p effects, no sprites or hw scrolling, so there was no technical reason I couldn't use 4x fetch. For example this demo: https://www.pouet.net/prod.php?which=69702 runs about 10% faster with this fixed. In other cases like when using blitter, on slow CPUs etc the difference can be much bigger. So, on AGA, always use 4x if you can.