How to draw wireframe objects with a halo

[azerty69]

Hello,

I'm searching for a way to draw wireframe objects with a halo. Which technique would you recommend?

Thanks in advance for any answer.

azerty

[chronologicaldot]

What do you mean? Do you have an example image? Is the entire object a wireframe mesh but not the halo or is the halo also a wireframe mesh?
As I recall, I believe you can tell irrlicht to draw wireframe. I'd start by checking the SMaterial flags.

[azerty69]

Hi,

@chronologicaldot
Here is an example image: https://docs.google.com/file/d/0Bys1p-N ... sp=sharing

SMaterial.Thickness is for 2D, how to draw bigger lines in wireframe mode?

Thanks in advance,
azerty

[hendu]

I see no halo in that pic?

[azerty69]

Hi,

@hendu
The image is an example of a scene I want to glow.

I've been advised to use a render texture and a shader. Are there other ways to do it?


Thanks for any reply,
azerty

[ent1ty]

That is the most usual way, yes. You can also add billboard scene nodes with a halo texture, but those are better for example for light sources like street lamps etc. In your case, post processing(rendering to a render texture and then altering that texture. Or you can also render to two textures - one the color, the other a "glow map" that marks the areas to receive glow for increased quality) seems to be a good approach.

[azerty69]

Hi,

I've implemented the technic described in the following URL: http://devmaster.net/posts/3100/shader- ... glow-bloom

Here is the result: