0006214: Scissoring issue on low renderscale

ID	Project	Category	View Status	Date Submitted	Last Update

0006214	The Dark Mod	Graphics	public	03.01.2023 13:00	06.12.2023 20:01

Reporter	stgatilov	Assigned To	stgatilov
Priority	normal	Severity	normal	Reproducibility	sometimes
Status	resolved	Resolution	fixed
Product Version	TDM 2.11
Target Version	TDM 2.12	Fixed in Version	TDM 2.12

Summary	0006214: Scissoring issue on low renderscale
Description	When we convert renderscale from vidsize (where it is computed) to actual FBO size, we round in non-conservative way. As the result, we can get some thin gaps between neighboring surfaces in a perfectly solid geometry. This usually happens in axis-aligned brush geometry where visportal splits the geometry into different surfaces.
Steps To Reproduce	It also happens on "Down and Out on Newford Road". Execute: setviewpos -118.38 -169.18 200.25 6.5 33.5 0.0 Make sure to set RenderScale like 0.14.
Tags	No tags attached.

stgatilov 03.01.2023 13:08 administrator ~0015685 Last edited: 03.01.2023 13:09	The original bug happened on Frost_Salamander's WIP map (codename FSX). I have attached screenshots showing 1-pixel holes at the window edges. The window contains a visportal, matching the edges exactly where the holes are. The holes are bright-blue, because that's the color of skybox. This issue was fixed only when I fixed rounding in CalcScissorParam in DepthStage (yeah, this shader-implemented scissor was quite hard to find). The fix is in svn rev 10231. test_fsx (2023-01-03 14-06-07) (2144.25 3408.25 116.25).jpg (59,623 bytes) test_fsx (2023-01-03 14-06-07) (2144.25 3408.25 116.25).jpg (59,623 bytes) test_fsx (2023-01-03 14-05-32) (2144 3440 116.25).jpg (72,632 bytes) test_fsx (2023-01-03 14-05-32) (2144 3440 116.25).jpg (72,632 bytes) test_fsx (2023-01-03 14-05-44) (2153.58 3439.7 116.25).jpg (72,296 bytes) test_fsx (2023-01-03 14-05-44) (2153.58 3439.7 116.25).jpg (72,296 bytes)

Daft Mugi 07.01.2023 02:56 developer ~0015718	r10231 made the compass disappear, at least for me.

stgatilov 07.01.2023 11:30 administrator ~0015721	Fixed in svn rev 10236.

Date Modified	Username	Field	Change
03.01.2023 13:00	stgatilov	New Issue
03.01.2023 13:00	stgatilov	Status	new => assigned
03.01.2023 13:00	stgatilov	Assigned To	=> stgatilov
03.01.2023 13:08	stgatilov	Note Added: 0015685
03.01.2023 13:08	stgatilov	File Added: test_fsx (2023-01-03 14-06-07) (2144.25 3408.25 116.25).jpg
03.01.2023 13:08	stgatilov	File Added: test_fsx (2023-01-03 14-05-32) (2144 3440 116.25).jpg
03.01.2023 13:08	stgatilov	File Added: test_fsx (2023-01-03 14-05-44) (2153.58 3439.7 116.25).jpg
03.01.2023 13:09	stgatilov	Note Edited: 0015685
03.01.2023 13:11	stgatilov	Steps to Reproduce Updated
07.01.2023 02:56	Daft Mugi	Note Added: 0015718
07.01.2023 11:30	stgatilov	Note Added: 0015721
05.12.2023 01:15	nbohr1more	Status	assigned => resolved
05.12.2023 01:15	nbohr1more	Resolution	open => fixed
05.12.2023 01:15	nbohr1more	Fixed in Version	=> TDM 2.12
06.12.2023 20:01	stgatilov	Issue cloned: 0006349
06.12.2023 20:01	stgatilov	Relationship added	related to 0006349
06.12.2023 20:01	stgatilov	Summary	Cleaning the scissors mess => Scissoring issue on low renderscale
06.12.2023 20:01	stgatilov	Description Updated