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Your raytraced shadow maps have a bit of a "glossy" feel, it suggests that you don't use linear colorspace for rendering these. I think colormagick also needs a
by leni536 8y ago
Your raytraced shadow maps have a bit of a "glossy" feel, it suggests that you don't use linear colorspace for rendering these. I think colormagick also needs additional options to handle multiplication in linear colorspace. I didn't look into any of your code, so I'm sorry if I'm wrong about this.
- tylermw 8y agoI'll look into that, thanks for the note. My Imagemagick knowledge is by far my weakest link.
- a_e_k 8y agoSomething like "-set colorspace RGB -colorspace sRGB" converts from linear RGB to sRGB. Switch those two to go the other way as needed.
- JKCalhoun 8y agoI don't know about "glossy" (this is not my field) but I did feel the way that the shadows diffused (considering moving from the object casting the shadow to the shadows terminus) seemed ... unnatural? There seem to be odd contours, banding, striations. Perhaps it is the gamma-thing that you point out — the blackness falling off too quickly. Or perhaps the algorithm has been overly optimized and the math is taking unnatural shortcuts.