dp2add - ps
Microsoft DirectX 9.0 SDK Update (October 2004)

dp2add - ps


Performs a 2-D dot product and a scalar addition.

Syntax

dp2add dst, src0, src1, src2.{x|y|z|w}

Where:

Remarks

Pixel shader versions1_11_21_31_42_02_x2_sw3_03_sw
dp2addxxxxx

The scalar value for add is chosen by the replicate swizzle on src2.

The following code snippet shows the operations performed.

dest = src0.r * src1.r + src0.g * src1.g + src2.replicate_swizzle
// The scalar result is replicated to the write mask components


© 2004 Microsoft Corporation. All rights reserved.
Feedback? Please provide us with your comments on this topic.
For more help, visit the DirectX Developer Center.