#matcap — Public Fediverse posts

Several cross products and a few dot products later, I have what appears to be a proper camera space coordinates setup for rendering #matcap textures. If the stakes are about as low as the computing power, I might still use the magic number approach for realtime implementations for reduced calculation load. 😅

Blender file can be downloaded here: https://github.com/jeinselen/Blender-NodeKit/blob/main/Launch_NodeKit/MatNodes-Matcap.blend

Technical art support question! How do you calculate #matcap mapping?

I used a cross product of the surface normal and view vector on a Unity project a few years ago, and it works in #Blender…but the perspective distortion ends up cropping some of the edges. I hacked together a slightly improved version that uses magic numbers and the Z component, but that can't be correct. 😅

Attached images: matcap source, #blender3d material nodes setup (with hacky fix selected), and render.

kifs preset 137.7

#noodlesplate #sdf #signed #distance #field #shader #glsl #matcap #kifs #ifs

kifs preset 137.7

#noodlesplate #sdf #signed #distance #field #shader #glsl #matcap #kifs #ifs

kifs preset 137.7

#noodlesplate #sdf #signed #distance #field #shader #glsl #matcap #kifs #ifs

kifs preset 137.7

#noodlesplate #sdf #signed #distance #field #shader #glsl #matcap #kifs #ifs

kifs preset 137.7

#noodlesplate #sdf #signed #distance #field #shader #glsl #matcap #kifs #ifs

I forgot matcaps on blender are a thing
#b3d #blender #blender3D #matcap #gameart

RT Ksenia Kondrashova
#genuary16 as an excuse to publish this one
Cheap way to turn @threejs primitive to disco ball
- instanced planes w/ matcap material
- positions & normals taken from original geometry merged vertices
Hosted on @CodePen
#genuary #threejs #matcap #codepen
https://codepen.io/ksenia-k/pen/ZEjJxWQ

:sys_twitter: https://twitter.com/uuuuuulala/status/1614864864106917888