Importantly, while these lighting modes can affect performance greatly, the impact also depends on the other relevant settings you have enabled. Note that once again, HDR lighting is enabled by default if this mode is chosen and cannot be disabled. This mode should only be enabled on high-end graphics cards. While this is very realistic, in areas with lots of complex objects or NPCs this can cause severe slowdowns. will all interact with the environment and cast complex shadows which constantly change as the light sources move. This can severely reduce performance on lower-end systems, because multiple light sources such as the sun, campfires, torches, etc. Full Dynamic Lighting - In this mode, full DirectX9 rendering is enabled, include major use of dynamic lighting.This mode is a good balance of performance and image quality, as even without dynamic lighting most of the benefits of DX9 rendering are visible. Note that High Dynamic Range (HDR) lighting will also be enabled automatically and cannot be turned off. In the Full Dynamic Lighting mode (see below) the tree shadow will be more detailed, and will move around and change shape as the sun moves. For example look at a tree as the sun sets in this mode the shadow remains the same size and shape. Certain fixed objects such as trees or buildings will still cast shadows, but these shadows are not dynamically affected by light sources - they are fixed light maps. Most objects in the game world will not cast shadows.

Objects Dynamic Lighting - In this mode, full DirectX9 graphics are used, however dynamic lighting is minimal, restricted only to the way your torchlight reacts with objects.

This mode is recommended for everyone who cannot get STALKER to run smoothly regardless of anything else they try. In DX8 mode, basic Static Lighting is used, which requires far less graphics card power and hence provides much faster performance. Dynamic lighting is the realistic interaction of moving light sources with objects, causing them to cast accurate shadows for example. In DX8 mode, Dynamic Lighting is completely disabled, as are various special effects such as HDR.

Static Lighting - While STALKER requires a full DirectX9-compatible graphics card to run, selecting this option switches STALKER to DirectX8 rendering mode.

Screenshot comparisons of all three are provided above, and each is explained further below: The options include Static Lighting, Objects Dynamic Lighting, and Full Dynamic Lighting.

Render: This setting determines the renderer used for generating the game's graphics, and hence has a major impact on the overall visual quality and performance in the game.

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