Mathematical Shader Processes
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Process |
Description |
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Absolute Value
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Inputs: Value A Output: Value of size matching A Calculates the absolute value of each component of the input A. |
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Add
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Inputs: Values A and B Output: Value of size matching larger of A and B Calculates the componentwise sum of the inputs A and B. LOD: If either input is high-detail only, then the other input is passed through unchanged in the low-detail shader. |
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Average
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Inputs: Values A and B Output: Value of size matching larger of A and B Calculates the componentwise average of the inputs A and B. LOD: If either input is high-detail only, then the other input is passed through unchanged in the low-detail shader. |
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Cosine
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Inputs: Scalar A Output: Scalar Calculates the cosine of the input A, where the input is measured in radians. |
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Cross Product
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Inputs: 3D vectors A and B Output: 3D vector Calculates the cross product of the inputs A and B. |
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Divide
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Inputs: Value A, Scalar B Output: Value of size matching A Calculates the quotient of each component of the input A and the scalar input B. Tip: If you're dividing by a constant value, then it would be more efficient to multiply by the reciprocal of the constant. For example, you should multiply by 0.5 instead of dividing by 2.0. |
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Dot Product 3D
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Inputs: 3D vectors A and B Output: Scalar Calculates the dot product of the inputs A and B. |
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Dot Product 4D
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Inputs: 4D vectors A and B Output: Scalar Calculates the dot product of the inputs A and B. |
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Exp Base 2
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Inputs: Scalar A Output: Scalar Calculates 2 raised to the power given by the input A. |
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Expand
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Inputs: Value A Output: Value of size matching A Multiplies each component of the input A by 2.0 and then subtracts 1.0. |
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Floor
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Inputs: Value A Output: Value of size matching A Calculates the floor of each component of the input A. To calculate a ceiling, negate the input and output of the Floor process. |
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Fraction
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Inputs: Value A Output: Value of size matching A Calculates the fraction of each component of the input A. The fraction of a number is the difference between that number and its floor. |
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Invert
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Inputs: Value A Output: Value of size matching A Subtracts each component of the input A from 1.0. |
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Linear Interpolate
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Inputs: Values A, B, and t Output: Value of size matching largest of A, B, and t Calculates the linear interpolation between the components of A and B using the components of the input t as the interpolation parameter. LOD: If either input A or B is high-detail only, then the other input in that pair is passed through unchanged in the low-detail shader, and the input t is ignored. |
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Log Base 2
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Inputs: Scalar A Output: Scalar Calculates the logarithm base 2 of the input A. If the input is not positive, then the result is undefined. |
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Magnitude 3D
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Inputs: 3D vector A Output: Scalar Calculates the magnitude of the input A. |
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Maximum
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Inputs: Values A and B Output: Value of size matching larger of A and B Calculates the componentwise maximum of the inputs A and B. LOD: If either input is high-detail only, then the other input is passed through unchanged in the low-detail shader. |
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Minimum
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Inputs: Values A and B Output: Value of size matching larger of A and B Calculates the componentwise minimum of the inputs A and B. LOD: If either input is high-detail only, then the other input is passed through unchanged in the low-detail shader. |
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Multiply
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Inputs: Values A and B Output: Value of size matching larger of A and B Calculates the componentwise product of the inputs A and B. LOD: If either input is high-detail only, then the other input is passed through unchanged in the low-detail shader. |
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Multiply Add
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Inputs: Values A, B, and C Output: Value of size matching largest of A, B, and C Calculates the componentwise product of the inputs A and B and then adds the components of the input C. LOD: If any two inputs are high-detail only, then the third input is passed through unchanged in the low-detail shader. If only the input C is high-detail only, then the product of the inputs A and B is calculated. If only the input A or only the input B is high-detail only, then the sum of the other input in that pair and the input C is calculated. |
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Normalize 3D
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Inputs: 3D vector A Output: 3D vector Normalizes the input A. If the input is the zero vector, then the result is undefined. |
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Power
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Inputs: Scalars A and B Output: Scalar Calculates the input A raised to the power of the input B. If the input A is negative, then the result is undefined. If the input A is zero and the input B is not positive, then the result is undefined. Tip: If you're just squaring a value, then it would be more efficient to multiply the value by itself. That is, you should calculate A × A using the Multiply process instead of raising A to the power of 2. |
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Reciprocal
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Inputs: Scalar A Output: Scalar Calculates the reciprocal of the input A. If the input is zero, then the result is undefined. |
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Reciprocal Square Root
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Inputs: Scalar A Output: Scalar Calculates the reciprocal square root of the input A. If the input is not positive, then the result is undefined. |
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Round
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Inputs: Value A Output: Value of size matching A Rounds each component of the input A to the nearest integer. |
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Saturate
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Inputs: Value A Output: Value of size matching A Clamps each component of the input A to the range [0,1]. |
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Set if Equal
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Inputs: Value A (required), Value B (optional) Output: Value of size matching larger of A and B For each component of the inputs A and B, the corresponding component of the output is set to 1.0 if the component of A is equal to the same component of B, and 0.0 otherwise. If input B is omitted, then it is assumed to be a vector of zeros. |
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Set if Greater Equal
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Inputs: Value A (required), Value B (optional) Output: Value of size matching larger of A and B For each component of the inputs A and B, the corresponding component of the output is set to 1.0 if the component of A is greater than or equal to the same component of B, and 0.0 otherwise. If input B is omitted, then it is assumed to be a vector of zeros. |
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Set if Greater Than
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Inputs: Value A (required), Value B (optional) Output: Value of size matching larger of A and B For each component of the inputs A and B, the corresponding component of the output is set to 1.0 if the component of A is greater than the same component of B, and 0.0 otherwise. If input B is omitted, then it is assumed to be a vector of zeros. |
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Set if Less Equal
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Inputs: Value A (required), Value B (optional) Output: Value of size matching larger of A and B For each component of the inputs A and B, the corresponding component of the output is set to 1.0 if the component of A is less than or equal to the same component of B, and 0.0 otherwise. If input B is omitted, then it is assumed to be a vector of zeros. |
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Set of Less Than
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Inputs: Value A (required), Value B (optional) Output: Value of size matching larger of A and B For each component of the inputs A and B, the corresponding component of the output is set to 1.0 if the component of A is less than the same component of B, and 0.0 otherwise. If input B is omitted, then it is assumed to be a vector of zeros. |
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Set if Not Equal
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Inputs: Value A (required), Value B (optional) Output: Value of size matching larger of A and B For each component of the inputs A and B, the corresponding component of the output is set to 1.0 if the component of A is not equal to the same component of B, and 0.0 otherwise. If input B is omitted, then it is assumed to be a vector of zeros. |
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Sine
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Inputs: Scalar A Output: Scalar Calculates the sine of the input A, where the input is measured in radians. |
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Square Root
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Inputs: Scalar A Output: Scalar Calculates the square root of the input A. If the input is negative, then the result is undefined. |
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Subtract
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Inputs: Values A and B Output: Value of size matching larger of A and B Calculates the componentwise difference of the inputs A and B. LOD: If either input is high-detail only, then the other input is passed through unchanged in the low-detail shader. |
