5. Settings Explained
Every operation mode has its own set of settings. These settings can be very important in achieving the best quality image.
- SSAA Mode: the SSAA profile at which the camera will render. Available options are X0.5, OFF, X2, X4 For the SSAA mode, each profile can be configured independently:
- Multiplier: the resolution multiplier at which the camera will render
- General Filtering settings can be configured on a per profile basis (Filter settings explained below)
- Resolution Scale: the scale at which the camera will render. Possible values are between 50% and 200%
- Don't limit the multiplier: if enabled, allows the multipliers to be set to any value custom value
- Resolution multiplier: the resolution multiplier at which the camera will render. Values over 2 are not recommended
- Don't limit the multiplier: if enabled, allows the multipliers to be set to any value custom value
- Resolution X multiplier: the resolution multiplier along the x axis at which the camera will render. Values over 2 are not recommended
- Resolution Y multiplier: the resolution multiplier along the y axis at which the camera will render. Values over 2 are not recommended
- Refresh Rate is target: if enabled, the refresh rate of the screen will be used as the target frame rate for the adaptive resolution mode
- Frame Rate target: the frame rate to be used as the target for the adaptive resolution mode
- Resolution scale range: the range of resolution scale in which the SSAA component is allowed to adapt based on frame rate. (Min / Max)
Post Process AA: The post process anti aliasing technique to be used before downscaling. Available options are: OFF, FSSAA, TSSAA
- FSSAA is inspired from the Filtering Approaches for Real-Time Anti Aliasing slides by Timothy Lottes (NVIDIA) and uses the FXAA v3 in order to smooth out the edges of the image before resizing the frame buffer to screen resolution.
- TSSAA (only on HDRP) is using super sampled temporal filtering in order to smooth out the edges of the image before resizing the frame buffer to screen resolution
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Use Filter: If enabled the final rendered image will be passed through a custom down sampler filter.
- Filter Type: The type of filter used to down sample the image.
- Sharpness: The sharpness of the down sampled image.
The simplest and crudest filtering method - it simply uses the colors of the texel closest to the main texel. While simple to implement, this results in a pixelated look at lower resolutions.
When to use Point Filtering: When looking to get a sharp image while rendering at a smaller resolution. Point can also be used to achieve a “pixelated” image
Bicubic filtering is often resulting in higher down sampling quality than Point Filter, but with a small cost in computation. Bicubic uses multiple samples in order to create a smooth curve-based interpolation between the texels' colors. Bicubic filtering also produces less image artifacts than the bilinear filtering.
When to use Bicubic Filtering: When the best quality is desired and the performance is not an issue. Depending on GPU architecture, bicubic might cause slowdown on older and integrated gpus.