RTGI 0.17.0.2 is an early beta version of the popular screen-space ray tracing shader. Unlike native Ray Tracing, which requires specific hardware like NVIDIA's RTX cores, RTGI works through , a post-processing injector. It calculates lighting and shadows based on the game's depth buffer .

: This is critical for the shader to "see" depth in the game. Open the ReShade menu in-game (usually the Activate the DisplayDepth shader to ensure you see a greyscale depth map. If the screen is blank or inverted, adjust the Global Preprocessor Definitions (e.g., set RESHADE_DEPTH_INPUT_IS_INVERTED 3. Usage & Optimization Activation

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Simulates the way light transfers color from one surface to another.