[quake3-bugzilla] [Bug 5442] New: DDS format image loader
bugzilla-daemon at icculus.org
bugzilla-daemon at icculus.org
Thu Mar 15 10:38:49 EDT 2012
https://bugzilla.icculus.org/show_bug.cgi?id=5442
Summary: DDS format image loader
Product: ioquake3
Version: SVN HEAD
Platform: All
OS/Version: All
Status: NEW
Severity: enhancement
Priority: P3
Component: Video
AssignedTo: zakk at icculus.org
ReportedBy: matthias.bentrup at googlemail.com
QAContact: quake3-bugzilla at icculus.org
The DDS file format is commonly used to store precompressed texture images.
This patch series implements a DDS file loader.
Up to now the image loaders unpack the image into RGBA8 format and let tr_image
compute the required mipmaps for OpenGL. DDS images can store all the mipmaps
of an image, so the LoadImage/CreateImage APIs had to be changed.
The fifth patch implements a DXT decompressor that allow using compressed
images on hardware that doesn't support DXT formats, but this may be covered by
patents, so maybe you want to skip that part.
The DDS file format can actually encode images in 100s of internal formats,
with numerous vendor extensions etc., so there probably exist DDS files which
this patch cannot load, I have tested the common DDS files with DXTn
compression only.
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