exp (Vertex Shader)
Provides full precision exponential 2x.
Syntax
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.
Remarks
| Vertex shader versions | 1_1 | 2_0 | 2_x | 2_sw | 3_0 | 3_sw |
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| exp | x | x | x | x | x | x |
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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, src0.w);
Instruction Information
| Minimum operating system | Windows 98 |
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