Hi Mikhail,
I think you have mis-intrepted my suggestion that DTX1a and DTX1c have
essential the same header and contents - I mean in that they are the
same format in memory so we can't distinguish between the two.
One would not expect nvcompress to produce the same output for DXT1a
and DTX1c and
14.04.2011 16:43, Mikhail I. Izmestev пишет:
14.04.2011 16:34, Mikhail I. Izmestev wrote:
14.04.2011 16:16, Robert Osfield wrote:
The heart of the problem is that the DDS file format doesn't
distiguish between the
two varients of DXT1, there is an alpha bit in the DDS header that
could be used
14.04.2011 16:34, Mikhail I. Izmestev wrote:
14.04.2011 16:16, Robert Osfield wrote:
The heart of the problem is that the DDS file format doesn't
distiguish between the
two varients of DXT1, there is an alpha bit in the DDS header that
could be used,
but 3rd party tools like nvdxt and nvcompres
14.04.2011 16:16, Robert Osfield wrote:
The heart of the problem is that the DDS file format doesn't
distiguish between the
two varients of DXT1, there is an alpha bit in the DDS header that
could be used,
but 3rd party tools like nvdxt and nvcompress that write DDS files
don't set this bit
so b
Hi Wojtek,
On Thu, Apr 14, 2011 at 12:23 PM, Wojciech Lewandowski
wrote:
> I hope I do not spread misinformation, as I am not fully sure nor I know
> exact details but I believe that logic for finding if DXT1 pixels are
> transparent, should first check the order of entries in chunk( 4x4pixels)
>
Lewandowski
-Oryginalna wiadomość-
From: Robert Osfield
Sent: Thursday, April 14, 2011 1:03 PM
To: OpenSceneGraph Users
Subject: Re: [osg-users] DDS with DXT1 with and without alpha
Hi All,
I have now implemented the various options I suggested in my previous
post, and for now have opted to
Hi All,
I have now implemented the various options I suggested in my previous
post, and for now have opted to default to DXT1 RGB pixle format for
DXT1 files, unless the alpha bit in the dds header is set, then it
will choose DXT1 RGBA pixel format. The OSG's DDS plugin does set the
alpha bit wh
Hi All,
I have been investigating issues with handling of .dds image files
that contain DXT1 compressed RGB data, with some of these files being
picked out as being RGBA because they have a black pixel within them.
I've looked at what documentation on DXT1 I can find on the web and
have what looks
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