<div dir="ltr">So, you'd need a shared GL/Vk context in order to Vk load the data and then GL trace it, if I understand correctly?<div><br></div><div>We could probably bring VSG into play to load the data. I think there's enough working code there already to do so. Or, really, we could just us what VSG has already and compose and execute the RTX commands without OSG, but copying already-composed scene data over from the OSG side.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Feb 21, 2019 at 3:15 PM Lionel Lagarde <<a href="mailto:lionel.lagarde@oktal-se.fr">lionel.lagarde@oktal-se.fr</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<p>Hi, <br>
</p>
<p> It is a GLSL extension, the ray tracing functions use some input
data (like the acceleration structure) that can only be
constructed and uploaded using the vk API.</p>
<p><br>
</p>
<div class="gmail-m_8137870979081223599moz-cite-prefix">On 21/02/2019 13:34, Chris Hanson
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">One of my guys pointed out this recent addition:<br>
<br>
<a href="https://github.com/KhronosGroup/GLSL/blob/master/extensions/nv/GLSL_NV_ray_tracing.txt" target="_blank">https://github.com/KhronosGroup/GLSL/blob/master/extensions/nv/GLSL_NV_ray_tracing.txt</a> <br>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, Feb 20, 2019 at 9:47
PM Chris Hanson <<a href="mailto:xenon@alphapixel.com" target="_blank">xenon@alphapixel.com</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr"><br>
Well, I was wondering if there was an OpenGL RTX API
anywhere, but it doesn't seem there is.
<div><br>
</div>
<div>Vulkan would appear to be the way to go for the future,
but since that's not ready for the oven yet (don't even
have all the mise en place), it might be we just have to
make a utility library to shovel OSG data into OptiX and
let it do the work for now. There's always going to have
to be some kind of bridge from OSG to either Vulkan or
something else if no OpenGL support extension ever
appears.</div>
</div>
</blockquote>
</div>
<br clear="all">
<div><br>
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<div dir="ltr">
<div>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div style="text-align:center">Chris 'Xenon' Hanson, omo sanza lettere. Xenon@AlphaPixel.com <a href="http://www.alphapixel.com/" target="_blank">http://www.alphapixel.com/</a></div><div style="text-align:center">Training • Consulting • Contracting</div><div style="text-align:center">3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL</div><div style="text-align:center"><span style="font-size:12.8px">Legal/IP •</span><span style="font-size:12.8px"> </span><span style="font-size:12.8px">Forensics •</span><span style="font-size:12.8px"> </span>Imaging <span style="font-size:12.8px">•</span><span style="font-size:12.8px"> </span><span style="font-size:12.8px">UAVs </span><span style="font-size:12.8px">• GIS • GPS • osgEarth • Terrain • Telemetry • Cryptography • LIDAR • Embedded • Mobile • iPhone/iPad/iOS • Android</span></div><div style="text-align:center"><a href="https://twitter.com/alphapixel" target="_blank">@alphapixel</a> <a href="http://facebook.com/alphapixel" target="_blank">facebook.com/alphapixel</a> (775) 623-PIXL [7495]<br></div></div></div></div></div></div>