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dp3 (sm4 - asm)

  • Article

3-dimensional vector dot-product of components rgb, POS-swizzle.

dp3[_sat] dest[.mask], [-]src0[_abs][.swizzle], [-]src1[_abs][.swizzle],
Item Description
dest
 [in] The result of the operation.
dest = src0.r * src1.r + src0.g * src1.g + src0.b * src1.b
src0
 [in] The components in the opertation.
src1
 [in] The components in the opertation.

Remarks

Scalar result replicated to components in write mask.

This instruction applies to the following shader stages:

Vertex Shader Geometry Shader Pixel Shader
x x x

Minimum Shader Model

This function is supported in the following shader models.

Shader Model Supported
Shader Model 5 yes
Shader Model 4.1 yes
Shader Model 4 yes
Shader Model 3 (DirectX HLSL) no
Shader Model 2 (DirectX HLSL) no
Shader Model 1 (DirectX HLSL) no

Shader Model 4 Assembly (DirectX HLSL)