Can't change the TextureFormat for a RenderTargetTexture

[rockefeller 3]

Hey guys,

I want to create a custom RenderTargetTexture of type BABYLON.Engine.TEXTUREFORMAT_LUMINANCE but it doesn't work. here's my code:

textureFormat is always 5 (probably TEXTUREFORMAT_RGBA), regardless of what I set it to be.

 

// Render target

var renderTarget = new BABYLON.RenderTargetTexture( "depth",

128, // res

scene,

false, // generateMipMaps

true, // doNotChangeAspectRatio

BABYLON.Engine.TEXTURETYPE_UNSIGNED_INT, // type

false, // isCube

BABYLON.Texture.BILINEAR_SAMPLINGMODE, // samplingMode

false, // generateDepthBuffer

false, // generateStencilBuffer

false); //isMulti

 

renderTarget.noMipmap = true;

renderTarget.wrapU = BABYLON.Texture.CLAMP_ADDRESSMODE;

renderTarget.wrapV = BABYLON.Texture.CLAMP_ADDRESSMODE;

renderTarget.wrapR = BABYLON.Texture.CLAMP_ADDRESSMODE;

renderTarget.textureFormat = BABYLON.Engine.TEXTUREFORMAT_LUMINANCE;

renderTarget.hasAlpha = false;

renderTarget.gammaSpace= false;

 

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

My wild guess is that the constructor doesn't pass textureFormat to _renderTargetOptions

this._renderTargetOptions = {

                generateMipMaps: generateMipMaps,

                type: type,

                samplingMode: samplingMode,

                generateDepthBuffer: generateDepthBuffer,

                generateStencilBuffer: generateStencilBuffer

            };

[RaananW 983]

textureFormat is a read-only parameter after the texture was created.

You can create a raw texture of type BABYLON.Engine.TEXTUREFORMAT_LUMINANCE using BABYLON.RawTexture.CreateLuminanceTexture(...) would that be helpful?

[rockefeller 3]

Can I use raw textures as rendertargets? if not, it doesn't help me much

[Deltakosh 4312]

Nope unfortunately.

RTT can be int, half, float but you cannot define the format (always RGBA)

if you want to, you can create a feature issue on our repo as I think it could be a good idea to support this use case

 

[rockefeller 3]

Done, here's the issue https://github.com/BabylonJS/Babylon.js/issues/3901

[Deltakosh 4312]

Will work on it asap!