Raytracing

AO Quality

Number of rays used for AO. Low quality - noisy image. High quality slower render.

AO Radius

Maximum ray length for AO. Two obejct can not affect each other if distance between them is bigger that AO radius.

AO Attenuation

Controls AO falloff with distance.

AO Blend intensity

Using this parameter AO layer is applied to the scene with given intensity.

AO Color

Using this parameter AO layer is applied to the scene with given color.

Rasterization

AO Layer Size

Ambient occlusion is rendered using its own resolution (similar to color bleeding), this resolution affects performance and quality greatly. Using this parameter it can be adjusted to match the current needs for performance or quality. The value is a simple multiplier where 1 means that the resolution is the same as output resolution.

AO Quality

Adjusting this parameter changes the quality/performance of AO computation greatly. Always try to find the lowest value with acceptable quality. Setting this value too high when not needed can have a notable performance hit. This attribute is common for both AO types but it affects the geometry elements type much more than the screen space type. For the screen space type this attribute represents number of directions per shaded pixel when casting rays to compute AO. The default value is usually enough for most cases.

SSAO Steps

Screen space only. Number of rays cast per direction (see AO Quality above). The default value is usually enough for most cases. Keep this value low as possible to improve performance.

SSAO Radius

Screen space only. Maximum distance to occluders that should be taken into account.

SSAO Attenuation

Screen space only. Rate of occlusion attenuation. Occlusion attenuates with distance from shaded pixel, ie. distant objects (even if large) do not occlude as much as closer objects.

SSAO Angle Bias

Screen space only. Minimum angle between surfaces to have AO between them. In some cases AO can form in places where it is not desired, eg. two almost collinear surfaces right next to each other. In such cases it is good to increase angle bias to values that gives the desired result.

SSAO Blur Radius

Screen space only. Resulting AO values are blurred together with respect to objects and scene depth to remove noise. This attribute tells how much blur should be applied, the blurring can be also disabled by setting the value to zero if noisy AO is what is wanted.

SSAO Blur Sharpness

Screen space only. Blur sharpness value affects the way blur is applied to the resulting AO layer. Blurring technique takes different objects and their depth into account so AO from one object is not blurred with AO from another object right next to it. Higher values result in more strict rule to not blur pixels from different depths.

AO Post Apply intensity

Using this parameter AO layer is applied to the scene with given intensity.

AO Color

Using this parameter AO layer is applied to the scene with given color.

Created with the Personal Edition of HelpNDoc: Easily create EPub books