pseudostereo

I'm trying to reconcile the various interactions between lights, materials and models, and as far as I can determine, some of the lighting parameters for jit.gl.model are broken. Example attached, along with a simple 1x1 plane to load into jit.gl.model.

Open the patch and load the 'plane.dae' file into jit.gl.model. This gives a side by side comparison of two ‘identical’ planes, one a jit.gl.gridshape and the other a jit.gl.model. There's a spotlight aimed at the two planes. The four material components can be affected by the sliders feeding jit.gl.material (if jit.gl.material's @override is on) or by the sliders feeding the two objects (if @override is off).

While mat_specular and mat_emission have the same effect on both planes, mat_diffuse and mat_ambient have no effect on the jit.gl.model plane. In fact, the mat_diffuse and mat_ambient attributes of jit.gl.model seem to be permanently set to 1.

Another anomaly is that, if @override is off, changing any of the sliders to jit.gl.material instantly turns @override on (the object sliders stop having any effect) even though the attrui object doesn’t update until the patch is unlocked. This can make things really confusing.

To summarize: Turn override (on jit.gl.material) off. Set the sliders for diffuse and ambient to 1 for each of the two objects. Now when you play with specular or emission, both planes appear identical. But changing diffuse or ambient only affects the lefthand (gridshape) plane.

Open the patch and load the 'plane.dae' file into jit.gl.model. This gives a side by side comparison of two ‘identical’ planes, one a jit.gl.gridshape and the other a jit.gl.model. There's a spotlight aimed at the two planes. The four material components can be affected by the sliders feeding jit.gl.material (if jit.gl.material's @override is on) or by the sliders feeding the two objects (if @override is off). 

While mat_specular and mat_emission have the same effect on both planes, mat_diffuse and mat_ambient have no effect on the jit.gl.model plane. In fact, the mat_diffuse and mat_ambient attributes of jit.gl.model seem to be permanently set to 1. 

problems with lights, materials & models