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Old 07-30-2017   #1
frozenLake's Avatar
Default Software deforms sector shapes at higher resolutions.

To showcase this bug, the map I have created is a 512x512 box, with a small diagonal sector to help showcase it.

To show this example, I have provided the example in different recording resolutions, even though making the gifs downsample it. The issue is still highly noticeable though.





Please note that this issue does not exist in OpenGL, due to its usage of polygons instead of the fake 3D rendering that software mode uses. Switching to something similar to QZDoom's Software Renderer might be a solution to this issue, but can't really be expected. Though, I'm pretty sure I have heard about some source ports that have fixed this issue by itself, so...

Last edited by toaster; 07-31-2017 at 07:34 AM.
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Old 07-31-2017   #2
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If I recall correctly, this is due to inherent inaccuracies in the rendering code because Doom approximates things, rounding for speed reasons instead of doing the math exactly. This creates quirks when the rounding changes each time the function is called, creating an answer that's slightly off in a different way each time. You can mitigate this in areas where it's exceptionally problematic by adding redundant vertices to the map, but it won't go away entirely, especially at higher resolutions.

Last edited by Mystic; 07-31-2017 at 06:43 AM. Reason: Slight wording change for clarity.
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Old 07-31-2017   #3
'That brit'
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I think this is a good explanation of what it is?
<MonsterIestyn> try ctrl+f masturbation and get to the point
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