RTGI Option needs access to the depth buffer.
***** NOTES *****
-I still can't understand why all the screenshots were a solid black picture. I apologize. Anyway, I've uploaded a comparison video, check it for a visual reference.
-The images are just snapshots from the video.
-RTGI is only rendering light bounces to about 30% of the depth of field and is not rendering ambient occlussion (the game already has it), making it not so performance demanding.
-For RTGI preset you MUST own the shader. Place it in the shaders folder.
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Installation and configuration:
Install the last Reshade.
Unzip the preset to the game executable folder. Overwrite everything.
************* READ THIS **************
************ For RTGI version *************
Now the tricky part, start the game (YOU MUST BE IN-GAME AND NOT IN THE MENU) and hit the HOME key for the Reshade overlay to show up.
Enable the DisplayDepth shader.
Now, if you can see the left half of the screen in weird colors and the right side y greyscale then it already works,
turn off DisplayDepth and enjoy.
If you see a completely black screen, click on Add-ons at the top of the Reshade window and you will see all the depth buffers,
you must click on each one of them until you can see the left half in weird colors and the right half on greyscale or black. If you can see the half-half color grey then go back to Home and turn off the DisplayDepth shader. Done.
Now, if what you see is a black right side, go to the Home section, disable the Performance Mode, click on "Edit global processors definition", change the value of RESHADE_DEPTH_IS_REVERSED from 0 to 1, and click on "Edit global processors definition" again.
That should do the trick, enable the Performance Mode again and disable the DisplayDepth shader. Done.
** FINAL ADVICE **
You may want to turn up the in-game brightness a little.
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Mods used in the video:
Epic Cinematic Graphics UE3 Dev visuals enhanced in Engine rendering Fully customizable
Bioshock Infinite INI tweaks (For mid to high range PC)
