将眼睛纹理的实际大小控制为设备默认分辨率的乘数。
如果值为 1.0,则使用 XR 设备指定的默认眼睛纹理分辨率。如果值小于 1.0,则使用较低分辨率的眼睛纹理,这样做可以提高性能,但会牺牲图像的清晰度。如果值大于 1.0,则使用更高分辨率的眼睛纹理,这可能会以牺牲性能和增大内存使用量为代价获得更清晰的图像。
更改此属性后,将始终重新分配眼睛纹理,此类操作的成本可能很高。要实时动态更改眼睛渲染分辨率,请考虑改用 XRSettings.renderViewportScale。
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