GLSL Geometry shader points render

Beginners
1

Hi. I have a problem with the geometric shader when using <layout (points) in> the geometry is not rendered even though I convert the SOP geometry to particles.

del.toe (4.8 KB)

2

Hey,

  1. All vertices emitted from geometry shader have the exact same coordinates, therefore no surface is rendered. Giving each vertex a small offset “reveals” the geometry.

  2. As far as I know a triangle strip contains exactly 3 vertices. To draw a square you’d have to split the quad into two triangles, emitting 6 vertices in total (call EndPrimitive() after each set of three).

  3. The Particle Type of the convert node was set to “Lines”. Works nevertheless, but changing it to “Point Sprite” gives a feeling of more consistency. :wink:

del_v2.toe (4.9 KB)

3

Thanks a lot for your answer:slightly_smiling_face: