function |
description |
minimum shader model |
---|---|---|

abs(value) |
Absolute value (per component). | 1.1 |

acos(x) |
Returns the arccosine of each component of x. | 1.1 |

all(x) |
Test if all components of x are nonzero. | 1.1 |

any(x) |
Test if any component of x is nonzero. | 1.1 |

asin(x) |
Returns the arcsine of each component of x. | 1.1 |

atan(x) |
Returns the arctangent of x. | 1.1 |

atan2(x, y) |
Returns the arctangent of of two values (x,y). | 1.1 |

ceil(x) |
Returns the smallest integer which is greater than or equal to x. | 1.1 |

clamp(x, min, man) |
Clamps x to the range [min, max]. | 1.1 |

clip(x) |
Discards the current pixel, if any component of x is less than zero. | 1.1 |

cos(x) |
Returns the cosine of x. | 1.1 |

cosh(x) |
Returns the hyperbolic cosine of x. | 1.1 |

cross(I, J) |
Returns the cross product of two 3D vectors I and J. | 1.1 |

D3DCOLORtoUBYTE4(x) |
Swizzles and scales components of the 4D vector x to compensate for the lack of UBYTE4 support in some hardware. | 1.1 |

ddx(x) |
Returns the partial derivative of x with respect to the screen-space x-coordinate. | 2.1 |

ddy(x) |
Returns the partial derivative of x with respect to the screen-space y-coordinate. | 2.1 |

degrees(x) |
Converts x from radians to degrees. | 1.1 |

determinant(m) |
Returns the determinant of the square matrix m. | 1.1 |

distance(x, y) |
Returns the distance between two points x and y. | 1.1 |

dot(I, J) |
Returns the dot product of two vectors I and J. | 1 |

exp(x) |
Returns the base-e exponent. | 1.1 |

exp2(value) |
Base 2 exponent (per component). | 1.1 |

faceforward(n, i, ng) |
Returns -n * sign(•(i, ng)). | 1.1 |

floor(x) |
Returns the greatest integer which is less than or equal to x. | 1.1 |

fmod(x, y) |
Returns the floating point remainder of x/y. | 1.1 |

frac(x) |
Returns the fractional part of x. | 1.1 |

frexp(x, exp) |
Returns the mantissa and exponent of x. | 2.1 |

fwidth(x) |
Returns abs(ddx(x)) + abs(ddy(x)) | 2.1 |

isfinite(x) |
Returns true if x is finite, false otherwise. | 1.1 |

isinf(x) |
Returns true if x is +INF or -INF, false otherwise. | 1.1 |

isnan(x) |
Returns true if x is NAN or QNAN, false otherwise. | 1.1 |

ldexp(x, exp) |
Returns x * 2exp | 1.1 |

length(I) |
Returns the length of the vector I. | 1.1 |

lerp(x, y, s) |
Returns x + s(y - x). | 1.1 |

lit(a, d, s, 1) |
Returns a lighting vector (ambient, diffuse, specular, 1) | 1.1 |

log(x) |
Returns the base-e logarithm of x. | 1.1 |

log10(x) |
Returns the base-10 logarithm of x. | 1.1 |

log2(x) |
Returns the base-2 logarithm of x. | 1.1 |

max(x, y) |
Selects the greater of x and y. | 1.1 |

min(x, y) |
Selects the lesser of x and y. | 1.1 |

modf(x, ip) |
Splits the value x into fractional and integer parts. | 1.1 |

mul(x, y) |
Performs matrix multiplication using x and y. | 1 |

noise(x) |
Generates a random value using the Perlin-noise algorithm. | 1.1 |

normalize(I) |
Returns a normalized vector I. | 1.1 |

pow(x, y) |
Returns x pow y. | 1.1 |

radians(x) |
Converts x from degrees to radians. | 1 |

reflect |
Returns a reflection vector. | 1 |

refract |
Returns the refraction vector. | 1.1 |

round |
Rounds x to the nearest integer | 1.1 |

rsqrt(x) |
Returns 1 / sqrt(x) | 1.1 |

saturate(x) |
Clamps x to the range [0, 1] | 1 |

sign(x) |
Computes the sign of x. | 1.1 |

sin(x) |
Returns the sine of x | 1.1 |

sincos(x) |
Returns the sine and cosine of x. | 1.1 |

sinh(x) |
Returns the hyperbolic sine of x | 1.1 |

smoothstep |
Returns a smooth Hermite interpolation between 0 and 1. | 1.1 |

sqrt(value) |
Square root (per component) | 1.1 |

step(a, x) |
Returns (x >= a) ? 1 : 0 | 1.1 |

tan(x) |
Returns the tangent of x | 1.1 |

tanh(x) |
Returns the hyperbolic tangent of x | 1.1 |

tex1D(s, t) |
1D texture lookup. | 1 |

tex1D(s, t, ddx, ddy) |
1D texture lookup. | 2.1 |

tex1Dbias |
1D texture lookup with bias. | 2.1 |

tex1Dgrad |
1D texture lookup with a gradient. | 2.1 |

tex1Dlod |
1D texture lookup with LOD. | 3.1 |

tex1Dproj |
1D texture lookup with projective divide. | 2.1 |

tex2D(s, t) |
2D texture lookup. | 1.1 |

tex2D(s, t, ddx, ddy) |
2D texture lookup. | 2.1 |

tex2Dbias |
2D texture lookup with bias. | 2.1 |

tex2Dgrad |
2D texture lookup with a gradient. | 2.1 |

tex2Dlod |
2D texture lookup with LOD. | 3 |

tex2Dproj |
2D texture lookup with projective divide. | 2.1 |

tex3D(s, t) |
3D texture lookup. | 1.1 |

tex3D(s, t, ddx, ddy) |
3D texture lookup. | 2.1 |

tex3Dbias |
3D texture lookup with bias. | 2.1 |

tex3Dgrad |
3D texture lookup with a gradient. | 2.1 |

tex3Dlod |
3D texture lookup with LOD. | 3.1 |

tex3Dproj |
3D texture lookup with projective divide. | 2.1 |

texCUBE(s, t) |
Cube texture lookup. | 1.1 |

texCUBE(s, t, ddx, ddy) |
Cube texture lookup. | 2.1 |

texCUBEbias |
Cube texture lookup with bias. | 2.1 |

texCUBEgrad |
Cube texture lookup with a gradient. | 2.1 |

texCUBElod |
Cube texture lookup with LOD. | 3.1 |

texCUBEproj |
Cube texture lookup with projective divide. | 2.1 |

transpose(m) |
Returns the transpose of the matrix m. | 1 |

trunc |
Truncates floating-point value(s) to integer value(s) | 1 |