jMonkeyEngine / jMonkeyEngine/jmonkeyengine

Not calling Mesh.updateCounts() causes negative statistics

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bug Contribution welcome
Dominant language
Java
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Description

If the user forgets to call Mesh.updateCounts(), the vertices / triangles value will be -1, thus causing the renderer statistics to be subtracted and eventually become negative. If the stats value is -1 the mesh should be considered invalid and crash with exception.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating Mesh.updateCounts() and the renderer statistics code that consumes vertex and triangle counts. Reproduce a mesh with counts left at -1, then trace where the statistics are decremented. Done means invalid counts are rejected with an exception before they can make renderer statistics negative.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
game-dev
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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