I will submit this bug/typo on GitHub too.
ColorTransformMethod.as line 72
override arcane function activate(context : Context3D, contextIndex : uint) : void
{
_colorTransformData[0] = _colorTransform.redMultiplier;
_colorTransformData[1] = _colorTransform.greenMultiplier;
_colorTransformData[2] = _colorTransform.blueMultiplier;
_colorTransformData[3] = _colorTransform.alphaMultiplier;
_colorTransformData[4] = _colorTransform.redOffset;
_colorTransformData[5] = _colorTransform.greenOffset;
_colorTransformData[6] = _colorTransform.blueOffset;
_colorTransformData[7] = _colorTransform.alphaOffset;
context.setProgramConstantsFromVector(Context3DProgramType.FRAGMENT, _colorTransformIndex, _colorTransformData, 2);
}
the ColorTransform class asks for offsets between -255 and 255. However the shading code uses colors between 0 and 1. Additional code needs to be added to convert the offsets to the correct range.
Maybe this - not sure if the boundary conditions matter for the shader.
_colorTransformData[4] = _colorTransform.redOffset / 0xff;
_colorTransformData[5] = _colorTransform.greenOffset / 0xff;
_colorTransformData[6] = _colorTransform.blueOffset / 0xff;
_colorTransformData[7] = _colorTransform.alphaOffset / 0xff;
