XinJiangBBH_LBE/Plugins/Streamline/Docs/Debugging - NRD.md

Debugging NRD

Currently NRD plugin supports debbugging through the validation layer.

VALIDATION LAYER

If NRDCommonSettings::enableValidation = true REBLUR & RELAX denoisers render debug information into OUT_VALIDATION output. Alpha channel contains layer transparency to allow easy mix with the final image on the application side. Currently the following viewport layout is used on the screen:

0	1	2	3
4	5	6	7
8	9	10	11
12	13	14	15

where:

• Viewport 0 - world-space normals
• Viewport 1 - linear roughness
• Viewport 2 - linear viewZ
  • green = +
  • blue = -
  • red = out of denoising range
• Viewport 3 - difference between MVs, coming from IN_MV, and expected MVs, assuming that the scene is static
  • blue = out of screen
  • pixels with moving objects have non-0 values
• Viewport 4 - world-space grid & camera jitter:
  • 1 cube = 1 unit
  • the square in the bottom-right corner represents a pixel with accumulated samples
  • the red boundary of the square marks jittering outside of the pixel area

REBLUR specific:

• Viewport 7 - amount of virtual history
• Viewport 8 - number of accumulated frames for diffuse signal (red = history reset)
• Viewport 11 - number of accumulated frames for specular signal (red = history reset)
• Viewport 12 - input normalized hitT for diffuse signal (ambient occlusion, AO)
• Viewport 15 - input normalized hitT for specular signal (specular occlusion, SO)