exp - vs

Provides full precision exponential 2^x.

Syntax

exp dst, src

 

where

• dst is the destination register.
• src is a source register. Source register requires explicit use of replicate swizzle, that is, exactly one of the .x, .y, .z, .w swizzle components (or the .r, .g, .b, .a equivalents) must be specified. See Source Register Swizzling.

Remarks

Vertex shader versions	1_1	2_0	2_x	2_sw	3_0	3_sw
exp	x	x	x	x	x	x

 

This instruction provides at least 21 bits of precision.

The following code fragment shows the operations performed:

dest.x = dest.y = dest.z = dest.w = (float)pow(2, src.replicateSwizzleComponent);

Related topics

Vertex Shader Instructions