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Ingun전인건's user avatar
Ingun전인건's user avatar
Ingun전인건's user avatar
Ingun전인건
  • Member for 3 years, 1 month
  • Last seen more than 2 years ago
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Contour-line looking artifact on diffuse irradiance map
@NathanReed And I just realized you pointed out it in the first comment months ago. I could have solved it much earlier if I had listened!
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Contour-line looking artifact on diffuse irradiance map
@NathanReed Also the same problem is addressed in the comment section and they say it's because the HDR image I'm using has abnormally high value by, for example, directly catching the sun, which is indeed my case.
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Contour-line looking artifact on diffuse irradiance map
@NathanReed Nevermind, I was wrong. They turn HDR into LDR only when they are rendering the skybox. 😅
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Contour-line looking artifact on diffuse irradiance map
But I still don't understand. Why would they use LDR environment in PBR rendering?
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Contour-line looking artifact on diffuse irradiance map
I was following Learn OpenGL's PBR-Diffuse Irradiance chapter and turns out they were converting HDR into LDR before the sampling. I must have missed that step.
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Contour-line looking artifact on diffuse irradiance map
I guess the samples that hits the sun are not properly weighted. I’m going to look into that part.
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Contour-line looking artifact on diffuse irradiance map
@NathanReed I tried more-sampling but the bright-dot problem persists. They just get little more blurry.
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Contour-line looking artifact on diffuse irradiance map
@NathanReed You were right I was indeed undersampling. I’ll try more-sampling and see how it go.
asked
Contour-line looking artifact on diffuse irradiance map