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Downsampling a Render Target Texture

by Lorne McIntosh · in Technical Issues · 12/17/2008 (2:06 am) · 2 replies

EDIT: moved to
www.garagegames.com/mg/forums/result.thread.php?qt=81704
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Torque 3D Owner Lorne McIntosh
Ubiq Visuals Inc,

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Ubiq Visuals is a software and creative content developer for the entertainment industry. Our vision is to provide inspiration and the tools for soon-to-be game designers and creative minds of all ages.

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    Associate Tom Spilman
    Sickhead Games
    #1
    12/17/2008 (1:41 pm)
    First off you should move this discussion to the private forums... we're not supposed to post a bunch of engine code out here.

    Writing a shader to do the downsample isn't that crazy of an idea as often you want some specialized filtering.

    Still if you do a little digging in the code you'll find a few places that use StretchRect...

    GFXD3D9TextureObject::readBackBuffer()
    GFXD3D9TextureTarget::deactivate()
    GFXPCD3D9Device::copyBBToSfxBuff()

    It seems that readBackBuffer() was originally intended to do downsampling, but it was never finished... i would start there.

    Torque 3D Owner Lorne McIntosh
    Ubiq Visuals Inc,
    #2
    12/17/2008 (2:24 pm)
    Whoops, I'll move it now.

    Okay, it's here now:
    www.garagegames.com/mg/forums/result.thread.php?qt=81704