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Latest NormalMapping Activity

buzzelliart
November 29, 2023 08:14 AM
OpenGL procedural terrain - triplanar texture mapping + normal mapping

Just a small demo of triplanar texture mapping + normal mapping in action over a procedurally generated surface.

To better show the effect, in this simple demo I used a brick texture over a very smooth terrain (generated using small values of "persistence").

Textures from:

. FreePBR.com

. Textures.com

C…

2,016 views
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@JoeJ 

JoeJ said:
Notice both methods have in common that you have to duplicate vertices.

very true, didn't even think about that.

JoeJ said:
If you think of a detailed mesh with thousands of triangles, those duplicated vertices are few in comparison to the total vertex count, so it's no problem an…

3,844 views
Normal map issues, I think the tangents are wrong

I'm stumped. Here's what information I could gather, throwing it out there in case someone can solve this, because I sure can't. 

I made a model that is fully triangulated, a box. In the .dae/collada file I get 72 uv values (s and t values), which would correspond to 36 vertices (3 for every tr…

5,193 views
Specular shimmer on edges of normal mapped object

I recall having this effect a number of times. In my case the cause were normals that didn't all point in the same direction. I'm not sure if there's a quick fix for it. Either anti-aliasing as mentioned (but I doubt that), or maybe a different shadowing approach. Should these pixels actually be li…

5,395 views
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