tree 68edbd7c7f96c528f0b5623bf59b7d11c1c714a2
parent 8c3aa0548766e6fef7da184107d35fd81315c1a5
author Fabian Giesen <rygorous@gmail.com> 1683072885 -0700
committer Fabian Giesen <rygorous@gmail.com> 1683073735 -0700

stb_image: create_png_image_raw restructuring

Allocate filter_buf for two scan lines that we do all the filter
processing in, then do all other conversions (bit depth,
endianness, inserting alpha=255 values) on the way out.

Separating the two concerns makes everything much clearer.