DrDebug is a 6,000+ line C++ render diagnostics toolkit for Unreal Engine 5.5+. It provides real-time split-screen debug buffer comparisons alongside the final render, native RGB histograms, false color views, EV100/lux exposure measurements, DBuffer decal inspection, albedo luminance analysis, and ray tracing validation. The tool uses a transient memory architecture to ensure zero runtime performance impact on projects.
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