Stacking multiple Rendertargets

[mop]

I am compositing my final result from several renderbuffers. Some of them render some additional effects.

 

Simply rendering a scene to a texture and then displaying it works like a charm. But as soon as i add another effect on top of it strange things happen

 

The result varies from 1.14 to 2.0 but both are broken.

 

For 1.14 i made a bit of debugging and have a local hackfix which works for now:

 

In Mesh.prototype.render

 

           var hardwareInstancedRendering = (engine.getCaps().instancedArrays !== null) && (batch.visibleInstances[subMesh._id] !== null);

if (scene.hihi) {

hardwareInstancedRendering = false;

}

 

No idea why it is related to instancing but this fix above works :S when i set hihi = true on my effectScene i get the desired rendering

 

Any insights or even a non hacky fix?

 

Here is a demo: http://www.babylonjs-playground.com/#WNIK9

[mop]

btw. for 1.4 a quick fix whgen using chrome (and that's how i found my hackfix) is to turn on the webglinspector extension. The extension seems to disable instancing support and then the result is as expected (red dot on greenish background).

 

A version switcher for the playground would be great

[julien-moreau]

Hello mop,

 

To "properly" use render target textures, you should add your RTTs to your scenes just after creating them (http://www.babylonjs-playground.com/#WNIK9#1 line 17 & 55). Then, BabylonJS will do everything you need =D