purelogiccode/CHDStudio release_3.9.2

3.9.2

on GitHub

3.9.2 (2026-10-05)

Duplicate outputs are skipped before conversion

• A duplicate input is stopped before any encoding starts. When two inputs in one batch resolve to the same output CHD and the collision only becomes visible once an archive is extracted (its product is named after a file inside the archive), the duplicate is now skipped immediately; previously it was converted in full and the finished product discarded. The first product is kept exactly as before — the only difference is that no time is spent encoding something that will not be used.
• The duplicate notice can no longer become a bug report. "<name>.chd was already produced earlier in this batch; keeping the first one." is now logged at information level instead of warning. Combined with the 3.9.1 exclusion pattern (kept as a safety net), this ends the false reports that 3.9.0 clients sent for every duplicated game in a batch.

Reliability

• Screenshot capture no longer risks a disposed bitmap. The F8 capture now hands the RenderTargetBitmap to a dedicated SaveScreenshot overload owned by ScreenshotService, instead of capturing it in a delegate that escaped the using block that disposes it.

Housekeeping

• MDSSharp cleanups: the index00Tracks null check is expressed as index00Tracks?.Contains(track.Number) ?? pregapsInFile, and long locals use var where the type is apparent.
• PBPSharp and test-project cleanups of the same kind; the throughput test documents its deliberate captured-counter lambda with a SuppressMessage.