Class FSRUtils

Utility functions relating to FidelityFX Super Resolution (FSR)

These functions are expected to be used in conjuction with the helper functions provided by FSRCommon.hlsl.

Inheritance

object

FSRUtils

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: UnityEngine.Rendering

Assembly: Unity.RenderPipelines.Core.Runtime.dll

Syntax

public static class FSRUtils

Fields

kDefaultSharpnessLinear

The default RCAS sharpness parameter as a linear value

Declaration

public const float kDefaultSharpnessLinear = 0.92

Field Value

Type	Description
float

kDefaultSharpnessStops

AMD's FidelityFX Super Resolution integration guide recommends a value of 0.2 for the RCAS sharpness parameter when specified in stops

Declaration

public const float kDefaultSharpnessStops = 0.2

Field Value

Type	Description
float

Methods

IsSupported()

Returns true if FidelityFX Super Resolution (FSR) is supported on the current system FSR requires the textureGather shader instruction which wasn't supported by OpenGL ES until version 3.1

Declaration

public static bool IsSupported()

Returns

Type	Description
bool	True if supported

SetEasuConstants(CommandBuffer, Vector2, Vector2, Vector2)

Sets the constant values required by the FSR EASU shader on the provided command buffer

Logic ported from "FsrEasuCon()" in Runtime/PostProcessing/Shaders/ffx/ffx_fsr1.hlsl

Declaration

public static void SetEasuConstants(CommandBuffer cmd, Vector2 inputViewportSizeInPixels, Vector2 inputImageSizeInPixels, Vector2 outputImageSizeInPixels)

Parameters

Type	Name	Description
CommandBuffer	cmd	Command buffer to modify
Vector2	inputViewportSizeInPixels	This the rendered image resolution being upscaled
Vector2	inputImageSizeInPixels	This is the resolution of the resource containing the input image (useful for dynamic resolution)
Vector2	outputImageSizeInPixels	This is the display resolution which the input image gets upscaled to

SetRcasConstants(CommandBuffer, float)

Sets the constant values required by the FSR RCAS shader on the provided command buffer

Logic ported from "FsrRcasCon()" in Runtime/PostProcessing/Shaders/ffx/ffx_fsr1.hlsl For a more user-friendly version of this function, see SetRcasConstantsLinear().

Declaration

public static void SetRcasConstants(CommandBuffer cmd, float sharpnessStops = 0.2)

Parameters

Type	Name	Description
CommandBuffer	cmd	Command buffer to modify
float	sharpnessStops	The scale is {0.0 := maximum, to N>0, where N is the number of stops(halving) of the reduction of sharpness

SetRcasConstantsLinear(CommandBuffer, float)

Sets the constant values required by the FSR RCAS shader on the provided command buffer

Equivalent to SetRcasConstants(), but handles the sharpness parameter as a linear value instead of one specified in stops. This is intended to simplify code that allows users to configure the sharpening behavior from a GUI.

Declaration

public static void SetRcasConstantsLinear(CommandBuffer cmd, float sharpnessLinear = 0.92)

Parameters

Type	Name	Description
CommandBuffer	cmd	Command buffer to modify
float	sharpnessLinear	The level of intensity of the sharpening filter where 0.0 is the least sharp and 1.0 is the most sharp