Vertex RGBA Value

Game Engine Game Engine Support and Discussion
1

Why doesn’t .getRGBA() return something like [R, G, B, A] instead of a value like -65536…what is that???
How can I convert [R, G, B, A] values into one of these numbers so I may set vertex colors in realtime?
Please help! :frowning:

2

getRGBA() and setRGBA return and expect 32bit signed integer values.

here are a couple functions to convert back and forth between RGBA and integer formats:

def RGBA2int(R, G, B, A):
	"Takes a list in format [R, G, B, A] and maps it to an integer."
	return (A << 24) + (B << 16) + (G << 8) + R

def int2RGBA(value):
	"Returns a list of RGBA values from an integer."
	return [value & 255, (value >> 8) & 255, (value >> 16) & 255, (value >> 24) & 255]

Add these to the top of your script and use them to convert your RGBA lists to a value that setRGBA() can use, and to understand the values returned by getRGBA()

I hope this helps :smiley:

3

Thanks alot wiseman303, exactly what I needed!

4

Okay I’m having trouble:
When the mesh only has one texture every vertex in the mesh has it’s RGBA changed but, when I set the vertex RGBA on a mesh with multiple textures only parts of the mesh that have a certain texture are set. (The texture is randomly chosen everytime I run the game.)
Whats a solution to this problem?

5

That’s probably because whatever method you’re using to get the vertices is only getting the vertices of one material. The first argument in getVertex() Is the material number.

6

I fixed the problem, it works perfectly now!!
I forgot to use the material number on getVertexArrayLength()
I just left it with ‘0’ :expressionless:

7

Glad to hear you got it working :smiley: