Fix T51529: Black boxes on a denoising render when using a .exr image as a environmental texture
Fix T51529: Black boxes on a denoising render when using a .exr image as a environmental texture

It is caused by NaN value in the input texture. Now we check for all the pixels
having proper finite values.

Should also help here in the studio,

tangent-opensource/coreBlackbird,tangent-opensource/coreBlackbird,tangent-opensource/coreBlackbird