StorageTexture: Mipmaps

[sunag]

Related issue: Closes #27274

Description

Whenever StorageTexture is computed and storageTexture.generateMipmaps=true and storageTexture.minFilter=Mipmaps.. the Backend.generateMipmaps() will be called.

--

• WebGPURenderer.getMaxAnisotropy()

[Spiri0]

Hi Sunag,

I immediately downloaded r160 and also looked at the two compute texture examples to see whether mipmaps were created. In compute textures I saw a commented out line.

I just did this after the computed storageTextures:

Update(){

   //Here the textures are computed


   this.displacement.generateMipmaps = true;
   this.derivative.generateMipmaps = true;
   this.jacobian.generateMipmaps = true;

   this.displacement.magFilter = THREE.LinearFilter;
   this.derivative.magFilter = THREE.LinearFilter;
   this.jacobian.magFilter = THREE.LinearFilter;

   this.displacement.minFilter = THREE.LinearMipMapLinearFilter;
   this.derivative.minFilter = THREE.LinearMipMapLinearFilter;
   this.jacobian.minFilter = THREE.LinearMipMapLinearFilter;

   this.displacement.anisotropy = this.params_.renderer.getMaxAnisotropy();
   this.derivative.anisotropy = this.params_.renderer.getMaxAnisotropy();
   this.jacobian.anisotropy = this.params_.renderer.getMaxAnisotropy();

  
   document.getElementById("testfield5").value = Object.keys(this.displacement);
   document.getElementById("testfield6").value = this.displacement.mipmaps.length;  //to check whether the mipmaps have been created
}

The length of the mipmaps is shown to me as 0. At 256 x 256 for the storageTextures my expected value is 8 mipmaps.
Is Mipmaps.. a new node element in your comment? In any case, I couldn't find it in nodes.js.
The code runs without error messages and that's a good thing. Only the mipmaps are not created.

If it's ever of interest, I've uploaded my repo to github.
Maybe this would be useful as a test environment for future expansions around webgpu. So far I'm probably the only one who uses webgpu and the node system to such a large extent. And I'll add more.

But that's just a thought.

[sunag]

It was not intentional to store the automatically generated mipmaps in texture.mipmaps, this field is being used to load manually mipmaps generated.
It's possible to perform another test.

Open webgpu_compute_texture and make some changes:

const storageTexture = new StorageTexture( width, height );
storageTexture.minFilter = THREE.LinearMipMapLinearFilter;

...

const material = new MeshBasicNodeMaterial( { color: 0x00ff00 } );
material.colorNode = texture( storageTexture ).level( float( 5 ) );

minFilter will enable mipmaps and the node level will access the mipmap selected .level( float( 5 ) );

[Spiri0]

I imagine I know a lot, but I didn't know that there is a distinction between manual and automatic mipmaps. I've now tested this with textureLoad, because I can also specify the lod level there. I see the mipmaps, very nice. Let's see if I can get a V2 this year. Probably not because Christmas is always a special time for me and I approach things a little more calmly. I wish you all a Merry Christmas and thank you for r160 sunag ***@***.***> schrieb am Sa., 23. Dez. 2023, 15:01:

…

It was not intentional to store the automatically generated mipmaps in texture.mipmaps, this field is being used to load manually generated mipmaps. It's possible to perform another test. Open webgpu_compute_texture and make some changes: const storageTexture = new StorageTexture( width, height );storageTexture.minFilter = THREE.LinearMipMapLinearFilter; ... const material = new MeshBasicNodeMaterial( { color: 0x00ff00 } );material.colorNode = texture( storageTexture ).level( float( 5 ) ); minFilter will enable mipmaps and the node level will access the mipmap selected .level( float( 5 ) ); — Reply to this email directly, view it on GitHub <#27332 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AQOTTXSVI2T2HDCKKCCAPITYK3P2NAVCNFSM6AAAAABAKKULUSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQNRYGMYDAMZRGA> . You are receiving this because you commented.Message ID: <mrdoob/three. ***@***.***>