Yan:
I see... I understand the issue now.
The pixels in the light beam are pure white, and this pure white color is normally at 25% transparency, and blended with a brown background at that level.
But when the image is scaled, you have white pixels being blended with the brown pixels, and you end up with pixels that have a lot of white but their opacity is such that they're not blending with the background to produce the same result as the 25% white pixels in the pure beam.
There's two ways to fix this.
The first way is to change the 3D hardware so it blends the images differently. :-)
The second way which is actually possible is to blend the white layer seperately from the image of the hole. So make the light beam a seperate image with no brown. That will solve the problem.
I see... I understand the issue now.
The pixels in the light beam are pure white, and this pure white color is normally at 25% transparency, and blended with a brown background at that level.
But when the image is scaled, you have white pixels being blended with the brown pixels, and you end up with pixels that have a lot of white but their opacity is such that they're not blending with the background to produce the same result as the 25% white pixels in the pure beam.
There's two ways to fix this.
The first way is to change the 3D hardware so it blends the images differently. :-)
The second way which is actually possible is to blend the white layer seperately from the image of the hole. So make the light beam a seperate image with no brown. That will solve the problem.