See https://registry.khronos.org/DataFormat/specs/1.3/dataformat.1.3.inline.html#_hdr_endpoint_decoding

* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#default-material

Create a textured cube VAO centered at origin.

Create a screen-space quad for debug text overlay.

Input is a texture array of mipmapped gpu_image's: gpu_images[array_index][level_index]

Quick function to create a visualization of the Mandelbrot set as an float HDR image.

Create a quad VAO centered at origin with given aspect ratio.

Assumes ise 20 (256 levels)

Used for generating random test data

Draw debug text overlay.

rgba base+scale, dual plane a, ccs_index must be 3

lum+alpha direct, dual plane

rgb/rgba direct or rgb/rgba base+offset, single plane

rgb/rgba direct, or rgb/rgba base+offset, dual plane

This LDR example function uses the basis_compress() C-style function to compress a ETC1S .KTX2 file.

This HDR example function directly uses the basis_compressor_params and basis_compressor classes to compress to a UASTC HDR .KTX2 file. These classes

This LDR example function uses the basis_compress() C-style function to compress a UASTC LDR .KTX2 file.

Returns the nearest ISE symbol given a [0,255] endpoint value.

Returns the nearest ISE weight given a [0,64] endpoint value.

floor_log2 is not correct for the denorm and zero values, but we are going to do a max of this value with the minimum rgb9e5 exponent that will hide t