HDR Diagnostics

Debugging and data-export tools for the HDR tone-mapping pipeline.

Available Tools

Log Metering Values

Property	Value
Type	Toggle (On / Off)
Default	Off

When enabled, the following metering values are printed to the console every frame:

• EV — exposure value
• max_i — maximum scene intensity
• min_i — minimum scene intensity
• content_peak — detected content peak luminance

Useful for verifying that peak detection and exposure tracking behave as expected during live playback.

Export EV History to CSV

Property	Value
Type	Action

Exports the accumulated exposure-value metering history to a CSV file. Use this to analyse metering behaviour over time in a spreadsheet or plotting tool.

Not Yet Implemented

This action is planned but not yet functional.

Export Histogram to CSV

Property	Value
Type	Action

Exports the current frame histogram data to a CSV file. Helpful for offline analysis of luminance distribution.

Not Yet Implemented

This action is planned but not yet functional.

Recommended Settings

For day-to-day use, leave Log Metering Values off — the per-frame console output adds overhead. Enable it temporarily when diagnosing tone-mapping issues such as unexpected brightness shifts or clipping.

Menu Path

Main Menu > HDR Settings > Diagnostics