Why not render directly depth and normal when rendering the color buffer?

[BlackMojito]

With MRT support, we should be able to render directly color buffer, depth buffer, normal buffer in one pass. Is there a way to implement it? 

With ShaderMaterial, I can write whatever I want but how can I customize Babylonjs (scene, camera etc.) so that I can write to a MultiRenderTarget just as GeometryBufferRenderer? 

I really want to gain every millisecond in my app. Thanks in advance.

[Guest]

Yes no problem but it will only works on Webgl2

You can see how we deal with it here: https://github.com/BabylonJS/Babylon.js/blob/master/src/Rendering/babylon.geometryBufferRenderer.ts

[BlackMojito]

On 2018/2/7 at 3:13 AM, Deltakosh said:

Yes no problem but it will only works on Webgl2

You can see how we deal with it here: https://github.com/BabylonJS/Babylon.js/blob/master/src/Rendering/babylon.geometryBufferRenderer.ts

Hi @Deltakosh, I understand the mechanism. My question is actually how I can set the "default" output color buffer of the active scene camera to a MultiRenderTarget? 

[Guest]

The geometryBufferRender can output position:

https://github.com/BabylonJS/Babylon.js/blob/master/src/Shaders/geometry.fragment.fx

Here:

https://github.com/BabylonJS/Babylon.js/blob/master/src/Rendering/babylon.geometryBufferRenderer.ts#L32

 

[BlackMojito]

On 2018/3/2 at 12:35 AM, Deltakosh said:

The geometryBufferRender can output position:

https://github.com/BabylonJS/Babylon.js/blob/master/src/Shaders/geometry.fragment.fx

Here:

https://github.com/BabylonJS/Babylon.js/blob/master/src/Rendering/babylon.geometryBufferRenderer.ts#L32

 

https://github.com/BabylonJS/Babylon.js/blob/afed8f2afe7226add444b6da0056a759f31ef82f/src/Rendering/babylon.geometryBufferRenderer.ts#L251

I meant...where can set a MRT attached to the active camera?

[Guest]

You should just need to enable geometryBuffer like here:

https://github.com/BabylonJS/Babylon.js/blob/master/src/PostProcess/RenderPipeline/Pipelines/babylon.standardRenderingPipeline.ts#L184

 

Then you can get the gBuffer like here:

https://github.com/BabylonJS/Babylon.js/blob/master/src/PostProcess/RenderPipeline/Pipelines/babylon.standardRenderingPipeline.ts#L444