ff471376(v=vs.85).aspx

Intrinsic Functions

The following table lists the intrinsic functions available in HLSL. Each function has a brief description, and a link to a reference page that has more detail about the input argument and return type.

Name	Description	Minimum shader model
abort	Terminates the current draw or dispatch call being executed.	4
abs	Absolute value (per component).	1¹
acos	Returns the arccosine of each component of x.	1¹
all	Test if all components of x are nonzero.	1¹
AllMemoryBarrier	Blocks execution of all threads in a group until all memory accesses have been completed.	5
AllMemoryBarrierWithGroupSync	Blocks execution of all threads in a group until all memory accesses have been completed and all threads in the group have reached this call.	5
any	Test if any component of x is nonzero.	1¹
asdouble	Reinterprets a cast value into a double.	5
asfloat	Convert the input type to a float.	4
asin	Returns the arcsine of each component of x.	1¹
asint	Convert the input type to an integer.	4
asuint	Reinterprets the bit pattern of a 64-bit type to a uint.	5
asuint	Convert the input type to an unsigned integer.	4
atan	Returns the arctangent of x.	1¹
atan2	Returns the arctangent of of two values (x,y).	1¹
ceil	Returns the smallest integer which is greater than or equal to x.	1¹
CheckAccessFullyMapped	Determines whether all values from a Sample or Load operation accessed mapped tiles in a tiled resource.	5
clamp	Clamps x to the range [min, max].	1¹
clip	Discards the current pixel, if any component of x is less than zero.	1¹
cos	Returns the cosine of x.	1¹
cosh	Returns the hyperbolic cosine of x.	1¹
countbits	Counts the number of bits (per component) in the input integer.	5
cross	Returns the cross product of two 3D vectors.	1¹
D3DCOLORtoUBYTE4	Swizzles and scales components of the 4D vector xto compensate for the lack of UBYTE4 support in some hardware.	1¹
ddx	Returns the partial derivative of x with respect to the screen-space x-coordinate.	2¹
ddx_coarse	Computes a low precision partial derivative with respect to the screen-space x-coordinate.	5
ddx_fine	Computes a high precision partial derivative with respect to the screen-space x-coordinate.	5
ddy	Returns the partial derivative of x with respect to the screen-space y-coordinate.	2¹
ddy_coarse	Computes a low precision partial derivative with respect to the screen-space y-coordinate.	5
ddy_fine	Computes a high precision partial derivative with respect to the screen-space y-coordinate.	5
degrees	Converts x from radians to degrees.	1¹
determinant	Returns the determinant of the square matrix m.	1¹
DeviceMemoryBarrier	Blocks execution of all threads in a group until all device memory accesses have been completed.	5
DeviceMemoryBarrierWithGroupSync	Blocks execution of all threads in a group until all device memory accesses have been completed and all threads in the group have reached this call.	5
distance	Returns the distance between two points.	1¹
dot	Returns the dot product of two vectors.	1
dst	Calculates a distance vector.	5
errorf	Submits an error message to the information queue.	4
EvaluateAttributeAtCentroid	Evaluates at the pixel centroid.	5
EvaluateAttributeAtSample	Evaluates at the indexed sample location.	5
EvaluateAttributeSnapped	Evaluates at the pixel centroid with an offset.	5
exp	Returns the base-e exponent.	1¹
exp2	Base 2 exponent (per component).	1¹
f16tof32	Converts the float16 stored in the low-half of the uint to a float.	5
f32tof16	Converts an input into a float16 type.	5
faceforward	Returns -n * sign(dot(i, ng)).	1¹
firstbithigh	Gets the location of the first set bit starting from the highest order bit and working downward, per component.	5
firstbitlow	Returns the location of the first set bit starting from the lowest order bit and working upward, per component.	5
floor	Returns the greatest integer which is less than or equal to x.	1¹
fma	Returns the double-precision fused multiply-addition of a * b + c.	5
fmod	Returns the floating point remainder of x/y.	1¹
frac	Returns the fractional part of x.	1¹
frexp	Returns the mantissa and exponent of x.	2¹
fwidth	Returns abs(ddx(x)) + abs(ddy(x))	2¹
GetRenderTargetSampleCount	Returns the number of render-target samples.	4
GetRenderTargetSamplePosition	Returns a sample position (x,y) for a given sample index.	4
GroupMemoryBarrier	Blocks execution of all threads in a group until all group shared accesses have been completed.	5
GroupMemoryBarrierWithGroupSync	Blocks execution of all threads in a group until all group shared accesses have been completed and all threads in the group have reached this call.	5
InterlockedAdd	Performs a guaranteed atomic add of value to the dest resource variable.	5
InterlockedAnd	Performs a guaranteed atomic and.	5
InterlockedCompareExchange	Atomically compares the input to the comparison value and exchanges the result.	5
InterlockedCompareStore	Atomically compares the input to the comparison value.	5
InterlockedExchange	Assigns value to dest and returns the original value.	5
InterlockedMax	Performs a guaranteed atomic max.	5
InterlockedMin	Performs a guaranteed atomic min.	5
InterlockedOr	Performs a guaranteed atomic or.	5
InterlockedXor	Performs a guaranteed atomic xor.	5
isfinite	Returns true if x is finite, false otherwise.	1¹
isinf	Returns true if x is +INF or -INF, false otherwise.	1¹
isnan	Returns true if x is NAN or QNAN, false otherwise.	1¹
ldexp	Returns x * 2exp	1¹
length	Returns the length of the vector v.	1¹
lerp	Returns x + s(y – x).	1¹
lit	Returns a lighting vector (ambient, diffuse, specular, 1)	1¹
log	Returns the base-e logarithm of x.	1¹
log10	Returns the base-10 logarithm of x.	1¹
log2	Returns the base-2 logarithm of x.	1¹
mad	Performs an arithmetic multiply/add operation on three values.	5
max	Selects the greater of x and y.	1¹
min	Selects the lesser of x and y.	1¹
modf	Splits the value x into fractional and integer parts.	1¹
msad4	Compares a 4-byte reference value and an 8-byte source value and accumulates a vector of 4 sums.	5
mul	Performs matrix multiplication using x and y.	1
noise	Generates a random value using the Perlin-noise algorithm.	1¹
normalize	Returns a normalized vector.	1¹
pow	Returns xy.	1¹
printf	Submits a custom shader message to the information queue.	4
Process2DQuadTessFactorsAvg	Generates the corrected tessellation factors for a quad patch.	5
Process2DQuadTessFactorsMax	Generates the corrected tessellation factors for a quad patch.	5
Process2DQuadTessFactorsMin	Generates the corrected tessellation factors for a quad patch.	5
ProcessIsolineTessFactors	Generates the rounded tessellation factors for an isoline.	5
ProcessQuadTessFactorsAvg	Generates the corrected tessellation factors for a quad patch.	5
ProcessQuadTessFactorsMax	Generates the corrected tessellation factors for a quad patch.	5
ProcessQuadTessFactorsMin	Generates the corrected tessellation factors for a quad patch.	5
ProcessTriTessFactorsAvg	Generates the corrected tessellation factors for a tri patch.	5
ProcessTriTessFactorsMax	Generates the corrected tessellation factors for a tri patch.	5
ProcessTriTessFactorsMin	Generates the corrected tessellation factors for a tri patch.	5
radians	Converts x from degrees to radians.	1
rcp	Calculates a fast, approximate, per-component reciprocal.	5
reflect	Returns a reflection vector.	1
refract	Returns the refraction vector.	1¹
reversebits	Reverses the order of the bits, per component.	5
round	Rounds x to the nearest integer	1¹
rsqrt	Returns 1 / sqrt(x)	1¹
saturate	Clamps x to the range [0, 1]	1
sign	Computes the sign of x.	1¹
sin	Returns the sine of x	1¹
sincos	Returns the sine and cosine of x.	1¹
sinh	Returns the hyperbolic sine of x	1¹
smoothstep	Returns a smooth Hermite interpolation between 0 and 1.	1¹
sqrt	Square root (per component)	1¹
step	Returns (x >= a) ? 1 : 0	1¹
tan	Returns the tangent of x	1¹
tanh	Returns the hyperbolic tangent of x	1¹
tex1D(s, t)	1D texture lookup.	1
tex1D(s, t, ddx, ddy)	1D texture lookup.	2¹
tex1Dbias	1D texture lookup with bias.	2¹
tex1Dgrad	1D texture lookup with a gradient.	2¹
tex1Dlod	1D texture lookup with LOD.	3¹
tex1Dproj	1D texture lookup with projective divide.	2¹
tex2D(s, t)	2D texture lookup.	1¹
tex2D(s, t, ddx, ddy)	2D texture lookup.	2¹
tex2Dbias	2D texture lookup with bias.	2¹
tex2Dgrad	2D texture lookup with a gradient.	2¹
tex2Dlod	2D texture lookup with LOD.	3
tex2Dproj	2D texture lookup with projective divide.	2¹
tex3D(s, t)	3D texture lookup.	1¹
tex3D(s, t, ddx, ddy)	3D texture lookup.	2¹
tex3Dbias	3D texture lookup with bias.	2¹
tex3Dgrad	3D texture lookup with a gradient.	2¹
tex3Dlod	3D texture lookup with LOD.	3¹
tex3Dproj	3D texture lookup with projective divide.	2¹
texCUBE(s, t)	Cube texture lookup.	1¹
texCUBE(s, t, ddx, ddy)	Cube texture lookup.	2¹
texCUBEbias	Cube texture lookup with bias.	2¹
texCUBEgrad	Cube texture lookup with a gradient.	2¹
texCUBElod	Cube texture lookup with LOD.	3¹
texCUBEproj	Cube texture lookup with projective divide.	2¹
transpose	Returns the transpose of the matrix m.	1
trunc	Truncates floating-point value(s) to integer value(s)	1

CG 内置函数和 HLSL 内置函数

HLSL 内置函数：https://msdn.microsoft.com/en-us/library/ff471376(v=vs.85).aspx

Intrinsic Functions

个人收藏笔记记录

HLSL 内置函数：https://msdn.microsoft.com/en-us/library/ff471376(v=vs.85).aspx

Intrinsic Functions

个人收藏笔记记录

开通VIP