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Everything posted by tar

  1. OpenGL VR shaders

    Quick question. Is there any barrier to having a VR lens shader in the OpenGL viewport? Shader Toy talks about it: Shadertoy shaders can create images for Virtual Reality (VR) mediums seamlessly. For that shaders must implement the mainVR() entry point, which is optional and has this prototype:void mainVR( out vec4 fragColor, in vec2 fragCoord, in vec3 fragRayOri, in vec3 fragRayDir )where fragCoord and fracColor work the same as in regular 2D image shaders: they contain the pixel coordinates in surface space and the output pixel color.the variables fragRayOri and fragRayDir contain the ray origin and ray direction of the ray that goes through that pixel in the virtual world, given in tracker space. The shader is expected to transform these values into camera space if a moving camera is to be moved though the virtual world. The ray origin is given as variable and not uniform for VR systems where the camera is not modelled as a pinhole camera.Shaders that implement the mainVR entrypoint will automatically be flagged as VR ready and will be searchable though the filter system under the VR qualifier. https://www.shadertoy.com/howto
  2. How much memory do you use?

    I was pushing through 1 billion voxel sims with 64GB but I'm now looking at Eddie's much better memory management system as a solution to stop run away ram installations. It has many bounding boxes with 6(pow)3 voxels in each that adhere to the simulation instead of single box as in houdini.
  3. Houdini 17 Wishlist

    if I heard it correctly at the Sydney Sidefx presentation H17 will be released around Sept, also there is some nice work done on the muscles that might be available in some months. Had to leave early so probably missed a ton of stuff too.
  4. Please allow me...

    Usefulness of any forums for me is weighed in this philosophy: The amount of energy necessary to refute bullshit is an order of magnitude bigger than to produce it. And whilst Odforce was quite unique years ago there are many many other avenues today that will help me achieve the unique vfx work I want to produce.
  5. Common Sense

    ummm I have no interest in you, my interest is in robust solutions that scale in Houdini. For whatever reason you are personalising this feedback.
  6. Common Sense

    I did test it at various other settings it's a pretty poor solution to start a thread with and trumpet to other solutions. Not sure of the goal tbh unless you are aiming for ad hoc instead of robust solutions.
  7. Common Sense

    and that doesn't work for a scatter of 113..
  8. Common Sense

    Scatter set to 55.. In the end not sure of why this entire thread exists. Common sense is nothing more than the education you have before you are about 20. attrTransfer_fixed_55.hipnc
  9. Houdini for Mathematicians

    Im sure French schools teach continuos geometry. Discrete always comes after calculus.
  10. Houdini for Mathematicians

    Which school teaches discrete geometry mathematics in middle school?
  11. Common Sense

    Eh? ...the common sense solution isn't very robust. Just add more scatter points to see it fall apart.
  12. Cache Optimization

    On the Save filter tab, cast all the attributes to 16bit float. Also remove any you don't want.
  13. I'm looking at improving my bug submission to SESI. Some of the bugs submitted are a ninja combination of twister-like keyboard and mouse sequences. Screen recordings help with HUD displays of keys pressed and mouses clicked but a macro playback system would be another step up. Any recommendations?
  14. So the new Radeon Vega is shipping with pro drivers for a $1k card. This sounds like it will be nice and stable compared to the ever changing Nvidia game drivers. Long shot here but does anyone use AMD pro drivers and are they nice and stable?
  15. Random link of interest

    Out of interest are oscars also awarded to individuals instead of companies?
  16. Is AMD potentially risky? (Threadripper)

    I assume we can disable the patch if we prefer full speed over security, or, just run an unpatched OS, if the bug even affects us.... sidefx?
  17. GLSL Pipeline in Houdini

    What do you want the points to look like?
  18. Zdepth in point VOP

    Haven't heard you can pull back GL info into Houdini. It's a one way street afaik.
  19. Zdepth in point VOP

    that Zbuffer is a low res 12bit(?) z buffer calculated on the GPU. Nothing to do with a VOP.
  20. @Sedatyf it's defiantly a bug but you may be able to open a new 'Scene View' tab instead of restarting Houdini.
  21. OpenCL and multiple GPU's

    The space is fine when put into the 'houdini.env' file but not with a shell environment variable export
  22. Faster RAM, is it worth it?

    Houdini defaults to using all cpus but you can limit it, with the -j flag, to test threading processes or leave processing cores available for other tasks. i.e. Mantra IPR defaults to all but 1 process so you can still use the machine whilst interactively rendering. You can see that under Mantra/Rendering/Render -> Use Max Processors menu
  23. Can you update? That version is epically old and might be fixed in a later version like 16.0.822 or 16.5.325. If there bug remains then send it into SideFx via their website.
  24. You can just Bypass, the yellow flag, on the unpin node.
  25. @LaidlawFX thanks! @bobc4d Python the Hard way has very good recommendations. https://learnpythonthehardway.org