Bug with preprocess function of BABYLON.Scene

[rixdeturcan]

Hello,

 

I'm an user of your great webgl framework. Actually, i'm trying to reproduce some realistic environement.

In order to realize an ocean, i useda grid uniformly sampled in the eye space, then projected on the world Y-plane.

 

To do that efficiently, I precompute the border positions of the tetragon out of the shader, then I interpolate in the shader linearly using the uv coordinates.

 

To precompute them, I use the camera transform matrix (which I invert). This is done in the preprocess of the render function (BABYLON.Scene.beforeRender)

 

I saw that if I move the camera fastly, there is a strange sliding effect of the plane, as it was late in time.

I investigated, and saw that the transform matrix used in the render is not the same that the one in the preprocess !

 

I've found the source : the function BABYLON.Scene.setTransformMatrix is called for each cameras after the preprocess function: There is an issue I think.

 

To solve that, I think that we should be able to register a preprocess function for each camera, in addition to the actual global preprocess function, which does not depend on the camera.

 

What do you think about this fix ?

 

Cordialy

[GameMonetize]

Next version will add two new callbacks:

beforeCameraRender(camera) and afterCameraRender(camera)

 

I think this will help you I'll update the repo later today

[rixdeturcan]

It's great

 

Thank you !