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Can't change the TextureFormat for a RenderTargetTexture


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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
false, // generateMipMaps
true, // doNotChangeAspectRatio
false, // isCube
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
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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


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