luanti-org/luanti

“TGA Type 2 (uncompressed RGB) top-bottom Test Node” devtest node texture is flipped upside down

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#12,570 opened on Jul 21, 2022

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@ Devtest GameBugLow prioritygood first issue

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Description

Minetest version

Commits 7c227d2a004068267dbe713259d57374a70c29e4 up to 2cf52642fa89a9497b0200f5a4637a25a82f9c3d

OS / Hardware

It does not matter, as this is not a rendering error.

Summary

The file games/devtest/mods/testnodes/textures/testnodes_tga_type2_16bpp_tb.tga is flipped upside down.

Possible reason: Converting from bottom-top to top-bottom pixel order using imagemagick can erroneously flip images.

Steps to reproduce
  1. Place the TGA test nodes in devtest.
  2. Notice that one of the nodes has a ttexture that is flipped upside down.
Additional Information

If you fix this by flipping the texture, make sure that the resulting image is actually a type 2 TGA with 16bpp (A1R5G5B5) colors for which imagemagick's identify(1) reports an orientation of TopLeft.

Contributor guide

Research direction
Flip the texture file 'testnodes tga type2 16bpp tb.tga' vertically, ensuring it remains a valid type 2 TGA with 16bpp (A1R5G5B5) and TopLeft orientation.
Tech stack
None
Domain
game dev
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
None
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
90