Render CustomProceduralTexture when uniform changes

adam · August 28, 2020, 3:17pm

Is there a way to only render a custom procedural texture when a uniform changes?

I’m looking at ProceduralTexture.shouldRender function and it appears that you need to give the texture a refresh rate or set it to animate for it to render.

github.com

BabylonJS/Babylon.js/blob/master/src/Materials/Textures/Procedurals/proceduralTexture.ts#L298


public get refreshRate(): number {

    return this._refreshRate;

}



public set refreshRate(value: number) {

    this._refreshRate = value;

    this.resetRefreshCounter();

}



/** @hidden */

public _shouldRender(): boolean {

    if (!this.isEnabled || !this.isReady() || !this._texture) {

        if (this._texture) {

            this._texture.isReady = false;

        }

        return false;

    }



    if (this._fallbackTextureUsed) {

        return false;

    }

adam · August 28, 2020, 3:57pm

I just found ProceduralTexture.resetRefreshCounter:

github.com

BabylonJS/Babylon.js/blob/master/src/Materials/Textures/Procedurals/proceduralTexture.ts#L271


            this._fallbackTextureUsed = true;

        });



    return this._effect.isReady();

}



/**

 * Resets the refresh counter of the texture and start bak from scratch.

 * Could be useful to regenerate the texture if it is setup to render only once.

 */

public resetRefreshCounter(): void {

    this._currentRefreshId = -1;

}



/**

 * Set the fragment shader to use in order to render the texture.

 * @param fragment This can be set to a path (into the shader store) or to a json object containing a fragmentElement property.

 */

public setFragment(fragment: any) {

    this._fragment = fragment;

}

I’ll call that whenever I change a uniform.

Deltakosh · August 28, 2020, 5:44pm

good job

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Render CustomProceduralTexture when uniform changes

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