<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><div class="gmail_extra"><br><div class="gmail_quote">2016-07-20 8:48 GMT+01:00 Sebastian Messerschmidt <span dir="ltr"><<a 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 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 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>
<fieldset></fieldset>
<br>
</div>
</div>
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