Version 1 - Public

JamEditor v1.0 — first public release

A texture editor for the Grand Prix series by Geoff Crammond — GP2 and GP3
JAM files, with experimental GP3/GP4 JIP support.

Highlights

• Open, view, edit and save GP2 / GP3 software (SW) and hardware (HW) JAM textures
• Import / export as BMP & PNG — a single texture, the whole canvas, or every
  texture at once (pre-filled <JamName>_<JamID>.bmp names)
• Batch conversion of whole folders (HW↔SW, GP2↔GP3) with per-file retry and progress
• "Proper palette" generation and simplification (quad / seed / mean / neighbour) for SW JAMs
• Canvas tools — bin-packing auto-layout, drag-to-move with snap guides, smooth
  zoom & pan, per-monitor high-DPI, transparency checkerboard
• Undo / redo and clipboard cut / copy / paste between entries
• Jam Browser and Analysis tools — scan folders of JAMs with thumbnails
• RCR (car) JAM viewer — renders GP2, GP3 wheel, and GP3 multi-surface car
  sprites, with per-entry and full sprite-sheet PNG export

Known limitations in v1

• RCR (car) JAMs are view / render-only. You can load and export RCR sprites,
  but not edit or save them. A dedicated Car Editor is planned for a future release.
• Check your conversions. HW↔SW and GP2↔GP3 work for the common cases, but
  entries that use local (per-entry) palettes may not convert perfectly faithfully —
  verify output before relying on it, especially SW↔HW round-trips..
• Single-texture / canvas export overwrite existing files without a prompt.

Building from source

Built with Embarcadero Delphi (VCL). Virtual TreeView is bundled (virtualTrees/).
You must supply madExcept and EasyListView separately — the project
references both and won't compile without them.

Feedback

Please report issues with a sample JAM and which game (GP2 / GP3) it came from.