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mark_k · 05 April 2012, 18:43

I hope this is beta related, since I didn't see this issue before.

Testing 2.4.1 beta 4. Using AmigaOS 3.1, PAL ECS Agnus, PAL interlaced 640x560 Workbench. Windowed display, size 768x595 (which gives a small black border around the Amiga image). No scaling, no filter, graphics API Direct3D.

In some cases, the bottom-most scanline flickers between colour 0 and black. it seems each frame it is different.

The flickering isn't present when I boot to Workbench, but sometimes appears when I use a program which opens a non-laced screen then put that screen to the back revealing Workbench. So it's probably related to non-laced ⟶ laced switching. The effect only shows up occasionally and I haven't figured out a way to reliably reproduce it yet.

05 April 2012, 18:43	#19
mark_k Registered User Join Date: Aug 2004 Location: Posts: 3,343	I hope this is beta related, since I didn't see this issue before. Testing 2.4.1 beta 4. Using AmigaOS 3.1, PAL ECS Agnus, PAL interlaced 640x560 Workbench. Windowed display, size 768x595 (which gives a small black border around the Amiga image). No scaling, no filter, graphics API Direct3D. In some cases, the bottom-most scanline flickers between colour 0 and black. it seems each frame it is different. The flickering isn't present when I boot to Workbench, but sometimes appears when I use a program which opens a non-laced screen then put that screen to the back revealing Workbench. So it's probably related to non-laced ⟶ laced switching. The effect only shows up occasionally and I haven't figured out a way to reliably reproduce it yet.