Hi, I’m very new to jME3 (so forgive me if all this sounds dumb) but, I do have a fair amount of experience with J3D and VRML etc.
I’m trying to get a model to appear to light up from inside - e.g. a brake light on a car. I’d usually do this with an emissive color but jME3 doesn’t appear to understand this terminology.
After reading the Materials docs I found the Unshaded and Lighting MatDefs contain a GlowColor parameter…which seems to be exactly what I want. However, when I apply a material with a GlowColor to a model it doesn’t appear to work and I get a message like “m_GlowColor not declared in shader”.
In fact, it appears none of the basic color parameters (Diffuse, Ambient etc.) are declared in the Lighting MatDef.
I keep getting “not declared in shader” messages for m_VertexColor, m_Diffuse, m_Ambient, m_GlowColor etc.
What’s up with it? Am I doing something wrong?
glow color only works with the BloomFilter see this doc https://wiki.jmonkeyengine.org/legacy/doku.php/jme3:advanced:bloom_and_glow
you can ignore the “m_xxx is not declared…” messages
also check this tutorial:
materials_overview
GlowMap is a texture parameter- a grayscale image used to denote the location and intensity of the glow effect on the object
GlowColor is a color paramater- it denotes the actual color you want the GlowMap to emit.
you have to set them.
for example:
[java]
Material mat = new Material(assetManager, “Common/MatDefs/Light/Lighting.j3md”);
Texture glowing = assetManager.loadTexture(“Textures/GlowMaps/MyGlowMap.png”)
mat.setTexture(“GlowMap”, glowing);
mat.setColor(“GlowColor”, ColorRGBA.Red);
[/java]
Sorry for the late reply guys and many thanks for the help. This looks like it will do the trick.