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While some older versions or equivalent algorithms might be available for free through specific NVIDIA drivers iMMERSE library , the official "Pro" versions require the subscription. Helpful Installation Report
Screen-space ray tracing is naturally noisy. Turning the denoiser up helps smooth out graininess at the cost of a small processing overhead.
The benefits of RTGI are numerous:
: It significantly improves lighting accuracy by adding subtle light bounces, more realistic shadows, and global illumination that "grounds" objects in the world.
Pascal Gilcher distributes the RTGI shader exclusively through his personal Patreon page ( Marty McFly / Pascal Gilcher ).
If you're not ready to commit to a subscription, there are free and open-source alternatives that deliver a similar effect.
Simulates real-time light bounces based on what is visible on your screen.
Light sources accurately bounce color onto nearby walls and objects.
Move any accompanying texture or helper files into the Textures subfolder. Step 3: Configure the Depth Buffer
Find the reshade-shaders folder created during the ReShade installation. Move the qUINT_rtgi.fx file into reshade-shaders/Shaders .