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Ted McGregor

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Posts posted by Ted McGregor

    Raytracing

    in General Discussion Forum

    Posted · Edited by Ted McGregor

    16 minutes ago, Liaa Nova said:

    Did you mean the specific cards listed, or from GTX to RTX in general?

    Like Zalificent has explained before, if you merely have upgraded a GPU from GTX 1xxx to RTX 3xxx only, after let's say more than 3 years of buying the complete system, chance is high components like CPU or memory will become a bottleneck of processing graphical data. This will be noticeable with so-called micro-stutters, which can be very annoying for demanding games ( FPS, racing simulators ).

    Personally, for the sake of safety, I certainly would check if your power supply supports peak currents for the newer card. With an RTX 3xxx series GPU, power supplies should at least be able to catch peaks of a few hundred watts. I chose one of 750 to be on the safe side of things. I would certainly go no lower as 600.

    • Thanks 1

    Raytracing

    in General Discussion Forum

    Posted · Edited by Ted McGregor

    20 minutes ago, Zalificent Corvinus said:

    .. "speed" would realistically need a new CPU.

    Yes. The GPU jump will require other vital PC components to be upgraded too. Otherwise you suffer indeed bottlenecks you described.

    20 minutes ago, Zalificent Corvinus said:

    Sl's opengl/pbr engine probably doesn't speak "RTX" either, and the opengl/ALM engine certainly doesn't.

    Sure. SL will not be able to use RTX hardware to project true beams of light from light sources and reflect them or other lighting effects. But again. The newer hardware will improve overall performance, included by assistance of the built-in tensa-cores, which have more functions (like processing PBR ) than mere raytracing capabilities only.

    • Like 1

    Raytracing

    in General Discussion Forum

    Posted · Edited by Ted McGregor

    21 minutes ago, Zalificent Corvinus said:

    The RTX still needs a specific client rendering engine system, that passes it the info it needs to do the ray tracing, SL, even the PBR test viewers, still use OpenGL, so, no, no ray tracing in SL, even with PBR.

    Partially true. Even though SL's engine does not support true ray tracing (that's why you see reflections and physical depth but not the actual beams of light ), the RTX hardware will certainly improve the PBR experience for lighting, reflections and depth.

    I agree you shouldn't just invest in RTX hardware, because of SL only.

    And jumping from the GTX to RTX will defenitely require upgrades to other vital PC components as well. I'd suggest a new PC as a whole while you are at it.

    • Like 4

    Raytracing

    in General Discussion Forum

    Posted · Edited by Ted McGregor

    3 hours ago, Gopi Passiflora said:

    This may be a stupid question, but can Second Life support raytracing? Just wondering.

    Yes. Well, kinda. Rays of light are calculated and surfaces respond to this by reflections. Physical Based Rendering (PBR) depends on it and is currently being released, if only with alpha's in case of certain 3rd party viewers. NVidia's RTX range has built-in hardware ( tensa-cores ), which, amongst other functions, help in calculating these reflections of light on surfaces.

     

    PBR examples in SL ( not true raytracing )

    Snapshot_018.thumb.jpg.89d49f59210bae654

    Snapshot_022.thumb.jpg.b768736d8c7ce64c5

    3 hours ago, Gopi Passiflora said:

    The reason why I ask is because I'm getting a new graphics card (RTX 4070, which is capable of raytracing). Even if RT is not possible in SL, I want to see how the graphics card improves the graphics in SL over my current GTX 1660 Super.

    You would need to try this with a viewer supporting PBR with both cards. You'd see a noticeable difference.

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