Bones Question

[Pryme8]

In the default material the line:
#include<bonesDeclaration>

Includes this:
 

#if NUM_BONE_INFLUENCERS > 0
	uniform mat4 mBones[BonesPerMesh];

	attribute vec4 matricesIndices;
	attribute vec4 matricesWeights;
	#if NUM_BONE_INFLUENCERS > 4
		attribute vec4 matricesIndicesExtra;
		attribute vec4 matricesWeightsExtra;
	#endif
#endif

Where does the value BonesPerMesh come from?
Where can I manually get the NUM_BONE_INFLUENCERS value from an imported mesh, so that in a custom shader I can set these values correctly.


Also when is the

finalWorld

variable defined in the process?

[Guest]

So you can have a look here where all these info are provided:

https://github.com/BabylonJS/Babylon.js/blob/master/materialsLibrary/src/simple/babylon.simpleMaterial.ts#L149

https://github.com/BabylonJS/Babylon.js/blob/master/materialsLibrary/src/simple/babylon.simpleMaterial.ts#L213

[Pryme8]

I get 

"BJS - [15:32:16]: Error: ERROR: 0:143: 'finalWorld' : undeclared identifier
ERROR: 0:143: 'finalWorld' : undeclared identifier
ERROR: 0:143: 'assign' : l-value required (can't modify a const)
ERROR: 0:143: '=' : dimension mismatch
ERROR: 0:143: 'assign' : cannot convert from 'highp 4X4 matrix of float' to 'const highp float'"

When using:
 

#if NUM_BONE_INFLUENCERS > 0

    mat4 influence;

    influence = mBones[int(matricesIndices[0])] * matricesWeights[0];

 

    #if NUM_BONE_INFLUENCERS > 1

        influence += mBones[int(matricesIndices[1])] * matricesWeights[1];

    #endif  

    #if NUM_BONE_INFLUENCERS > 2

        influence += mBones[int(matricesIndices[2])] * matricesWeights[2];

    #endif  

    #if NUM_BONE_INFLUENCERS > 3

        influence += mBones[int(matricesIndices[3])] * matricesWeights[3];

    #endif  

 

    #if NUM_BONE_INFLUENCERS > 4

        influence += mBones[int(matricesIndicesExtra[0])] * matricesWeightsExtra[0];

    #endif  

    #if NUM_BONE_INFLUENCERS > 5

        influence += mBones[int(matricesIndicesExtra[1])] * matricesWeightsExtra[1];

    #endif  

    #if NUM_BONE_INFLUENCERS > 6

        influence += mBones[int(matricesIndicesExtra[2])] * matricesWeightsExtra[2];

    #endif  

    #if NUM_BONE_INFLUENCERS > 7

        influence += mBones[int(matricesIndicesExtra[3])] * matricesWeightsExtra[3];

    #endif  

 

    finalWorld = finalWorld * influence;

#endif

But the odd thing is it works o_O...  I am pretty confused on how this is possible.

[Guest]

Well this is weird

 

[Pryme8]

I think it has to do something with fallbacks, is why its working.

I was gonna PM you about this, but I moved on and I feel like this is very specific.