How do I know the dataType of an .exr image?

marcofugaro · January 16, 2021, 6:27pm

In the two .exr examples, the EXRLoades is called with a different dataType each time:

mrdoob/three.js/blob/cf04fca253477f40e04488229cfcaf0f280e448b/examples/webgl_materials_envmaps_exr.html#L80


				planeMesh.rotation.x = - Math.PI * 0.5;
				scene.add( planeMesh );
				THREE.DefaultLoadingManager.onLoad = function ( ) {
					pmremGenerator.dispose();
				};
				new EXRLoader()
					.setDataType( THREE.UnsignedByteType )
					.load( 'textures/piz_compressed.exr', function ( texture ) {
						exrCubeRenderTarget = pmremGenerator.fromEquirectangular( texture );
						exrBackground = exrCubeRenderTarget.texture;
						texture.dispose();
					} );
				new THREE.TextureLoader().load( 'textures/equirectangular.png', function ( texture ) {

and

github.com

mrdoob/three.js/blob/cf04fca253477f40e04488229cfcaf0f280e448b/examples/webgl_loader_texture_exr.html#L51


				renderer.outputEncoding = THREE.sRGBEncoding;
				scene = new THREE.Scene();
				const aspect = window.innerWidth / window.innerHeight;
				camera = new THREE.OrthographicCamera( - aspect, aspect, 1, - 1, 0, 1 );
				new EXRLoader()
					.setDataType( THREE.FloatType )
					.load( 'textures/memorial.exr', function ( texture, textureData ) {
						// memorial.exr is NPOT
						//console.log( textureData );
						//console.log( texture );
						// EXRLoader sets these default settings
						//texture.generateMipmaps = false;
						//texture.minFilter = LinearFilter;

I have an .exr file, how do I know which type to set with the loader?

I am guessing it’s the same for the RGBELoader as well.

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How do I know the dataType of an .exr image?

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