Is it possible to have a texture array of compressed textures?

Usnul · June 14, 2020, 9:54am

I’ve been wondering, is it possible to have an DataTexture2DArray but instead of plain pixel values, we’d have some compressed textures instead.

I had a look around but couldn’t find anything, either in OpenGL or in WebGL. Any pointers would be appreciated.

Mugen87 · June 14, 2020, 11:16am

DataTexture2DArray and DataTexture3D do not support compressed textures.

There is WebGL2RenderingContext.compressedTexImage3D() however I’ve never worked with it so far. So I can’t tell how well it is supported in browsers.

In any event, compressedTexImage3D() is not used by three.js. Only texImage3D().

github.com

mrdoob/three.js/blob/535d94f55442160f0cb7187a5b68a35f19b8f75f/src/renderers/webgl/WebGLTextures.js#L783-L791


		} else if ( texture.isDataTexture2DArray ) {

			state.texImage3D( _gl.TEXTURE_2D_ARRAY, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );
			textureProperties.__maxMipLevel = 0;

		} else if ( texture.isDataTexture3D ) {

			state.texImage3D( _gl.TEXTURE_3D, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );
			textureProperties.__maxMipLevel = 0;

arpu · June 16, 2020, 12:04pm

any plans to support the compressedTexture Array ? would be nice to have with compressed Basis Textures

Mugen87 · June 16, 2020, 12:40pm

There are no plans yet, sorry. You might want to create a feature request at GitHub for this.

arpu · June 16, 2020, 8:19pm

done with https://github.com/mrdoob/three.js/issues/19676

Topic		Replies	Views
Rendering to Texture3D/2DArray z-slice Questions textures , render-target , webgl2	1	890	May 27, 2019
THREE.CubeTexture using THREE.CompressedTexture Questions textures	14	3770	June 2, 2019
WebGL2 2D Texture Arrays Questions webgl2 , texture-array	4	2468	January 24, 2025
Create Data Texture Questions textures	6	3630	October 8, 2019
Decompress CompressedTexture Questions textures , ktx2	14	2032	March 7, 2025

Is it possible to have a texture array of compressed textures?

Related topics