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<div class="moz-cite-prefix">Hi Bruno, <br>
</div>
<blockquote
cite="mid:CAO-SbSt+_O2ffkwdQ4Y9ufVPVhk+S78fr4X6a5Yg-8LzuRv-HQ@mail.gmail.com"
type="cite">
<div dir="ltr">I intend to render a 16 bit per channel, 4 channel
image, i.e., each pixel is 4 x unsigned 16bit (uint16_t) RGBA,
leading to 64bit per pixel. <br>
</div>
</blockquote>
This clarified you probably need:<br>
internal: GL_RGBA16UI<br>
format: GL_RGBA<br>
type: GL_UNSIGNED_SHORT<br>
<br>
<br>
<a class="moz-txt-link-freetext" href="https://www.opengl.org/sdk/docs/man/docbook4/xhtml/glTexImage2D.xml">https://www.opengl.org/sdk/docs/man/docbook4/xhtml/glTexImage2D.xml</a><br>
<br>
Hope that helps<br>
Cheers<br>
Sebastian <br>
<blockquote
cite="mid:CAO-SbSt+_O2ffkwdQ4Y9ufVPVhk+S78fr4X6a5Yg-8LzuRv-HQ@mail.gmail.com"
type="cite">
<div class="gmail_extra"><br>
<div class="gmail_quote">2016-07-20 8:48 GMT+01:00 Sebastian
Messerschmidt <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:sebastian.messerschmidt@gmx.de"
target="_blank">sebastian.messerschmidt@gmx.de</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Hi Bruno, <br>
</div>
<span class="">
<blockquote type="cite">
<div>Ok so I meant GL_ vars. Could you suggest any
code for substituting that setImage line? Thank you</div>
</blockquote>
<br>
</span> To what end? You haven't told us, what you want to
achieve, except from using integer. <br>
If you want to fill it with 16bit integer values you
probably need <br>
<br>
<br>
internal: GL_R16UI<br>
format: GL_RED_INTEGER <br>
type: GL_UNSIGNED_SHORT<br>
<br>
will give you a format, where the red channel is 16bit
with unsigned values and your source type is unsigned
short values. <br>
<br>
Cheers<span class="HOEnZb"><font color="#888888"><br>
Sebastian <br>
</font></span>
<div>
<div class="h5"> <br>
<blockquote type="cite">
<div><br>
On 19 Jul 2016, at 09:35, Sebastian Messerschmidt
<<a moz-do-not-send="true"
href="mailto:sebastian.messerschmidt@gmx.de"
target="_blank">sebastian.messerschmidt@gmx.de</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>
<div>Hi Bruno,<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>
<div>Sorry but I didn't quite catch that.<br>
</div>
What do you mean by "but I thing you need
to use GL_RGBA_INTEGER_EXT as source"<br>
</div>
</div>
</blockquote>
The source type needs to be GL_RGBA_INTEGER_EXT
afaik when using integer textures. <br>
<blockquote type="cite">
<div dir="ltr">Alternatively, how can I
replace the macros in that setImage function
call?<br>
</div>
</blockquote>
Which macros? The GL_ are constants. <br>
<br>
Cheers<br>
Sebastian <br>
<blockquote type="cite">
<div class="gmail_extra"><br>
<div class="gmail_quote">2016-07-19 8:45
GMT+01:00 Sebastian Messerschmidt <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:sebastian.messerschmidt@gmx.de" target="_blank">sebastian.messerschmidt@gmx.de</a>></span>:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Hi,<br>
<br>
Your internal format needs to be
16bit per channel to I think, so
GL_UNSIGNED_INT_8_8_8_8_REV might be
inappropriate. <br>
GL_R16UI might do, but I thing you
need to use GL_RGBA_INTEGER_EXT as
source. Alternatively you can use
GL_LUMINANCE with GL_LUMINACE16F.<br>
<br>
What exactly are you doing with the
image? <br>
<br>
Cheers<br>
Sebastian<br>
</div>
<blockquote type="cite">
<div>
<div>
<div dir="ltr">
<div>
<div>
<div>
<div>
<div>
<div>
<div>Hello,<br>
<br>
</div>
I have a 16bit per
channel, 4
channel, image.
The format is
short (uint16_t).
Note that this
image is scaled to
the full 16bit
depth [0, 65536]<br>
<br>
<br>
</div>
I have this code
that works well for
a 8bit, 4 channel
image:<br>
<br>
osg::ref_ptr<osg::Image> image = new osg::Image(); <br>
image->setImage(ImageSize, ImageSize,1,<br>
GL_RGBA8,<br>
GL_RGBA,<br>
GL_UNSIGNED_INT_8_8_8_8_REV, <br>
</div>
MyDataPtr,<br>
osg::Image::NO_DELETE);<br>
<br>
<br>
<br>
</div>
Now I want to por this
to 16bit depth.<br>
</div>
How is this done?<br>
<br>
</div>
I tried<br>
<br>
image->setImage(ImageSize, ImageSize,1,<br>
GL_RGBA16UI,<br>
GL_RGBA,<br>
GL_UNSIGNED_INT_8_8_8_8_REV,
<br>
MyDataPtr,<br>
osg::Image::NO_DELETE);<br>
<br>
</div>
But this yields all black
textures. How can I do this
without converting my 16bit
image pixel data?<br>
</div>
<br>
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