Vertex rendering

Deprecated Krakatoa 1.0 Beta Discussion
1

I tried to render a mesher of a particle system using the vertex rendering option. The render threw an assert failure, but DID render. When I added the turn to poly modifier, the render did nothing. The mesher was ignored.


  • Chad
2

Yeah, I’m having a real hard time rendering meshers of particle systems.



A plain ol teapot renders fine, but it’s the meshers of particles that are giving me fits.

3

Oh, odd one… How do you define which meshes are the ones to render the vertices of, and which are the matte objects?


4

I tried using vertex paint to set the colors. Crashed. How do you define per-vertex color and opacity?

5

I tried using vertex paint to set the colors. Crashed. How do you define

per-vertex color and opacity? <<



The crash is likely related to the other geometry-vertex problem in the

current 0.9.3 beta.



On the upcoming build, I was able to render vertex colors as follows:


  1. Assign vertex colors to mesh using Assign Vertex Color utility with

    scanline renderer.
  2. Create a new material, and assign Vertex Color map to the

    Self-Illumination channel
  3. Set Particle Color to “Material Self-Illumination”
  4. Render “All Geometry Vertices”



    You could do the same with density scaling in the opacity channel.
6

Here is my simple example of vertex color rendering.

7

Oh, odd one… How do you define which meshes are the ones to render the

vertices of, and which are the matte objects? <<



Not odd at all… It looks like an oversight in the interface. I will talk

to the developers.


8

At present, I don’t see a way to render some geometry as particles with

other geometry as matte objects in a single pass.



The workaround would be to render your geometry vertices to a file, and then

render from file with your other matte objects active.

9

It occurs to me that vertex colors won’t work too well since vertex colors are a face data, not a vertex data. Umm… This is more complex than I had first thought. Perhaps read in a UVW map? Oh wait, same problem…

10

Yeah, I’m having a real hard time rendering meshers of particle systems.

A plain ol teapot renders fine, but it’s the meshers of particles that are

giving me fits. <<



Until I get the next build posted, I can’t offer much help. There is a

serious bug in the geometry-vertex rendering code that is causing the

assertion failures and crashes. I’ll try particle meshers on my internal

build and see if things are better.



I’ll get a new installer posted ASAP.