Hi, We're currently looking to switch to ASTC, though I do have some queries regarding the graphics pipeline for HDR formats.
Since we're looking to retain image quality as much as possible, can we use an Exr format for rendering (We currently use this for creating out lightmaps), and convert them directly to ASTC for our build?
It just when I've loaded exr files in to Mali it appears to compromise the image data (Darkening down), I presume it's clamping the channels?
Is there a recommended pipeline for converting HDR images to ASTC that won't compromise the data?
Cheers,
Caroline
Hi Peter,
Yes I wanted to send you the original file so you take a look at it in more detail, I've just tried to reattach (See image below), It looks as though I can't send you the original OpenExr file as this blog doesn't seem to recognize that file format? Though you can see it in the example below; test file just show a very basic 'Render To Texture' setup using OpenExr for light mapping.
Ideally we would like to be able to view HDR files within the Mali Texture Compression Tool and be able to view the before and after compression, so we can evaluate what optimal compression settings would be suitable for our work. But you seem to indicating that it Mali can not handle HDR files without altering and compromising the values, is that the case?
Thanks,