vs (Vertex Shader)

This instruction specifies the shader version number. This instruction works on all shader versions.

Syntax

vs_mainVer_subVer

Input Arguments

Input arguments contain a single main version number with a single sub version number. The allowable combinations are listed in the table below.

Remarks

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

This instruction must be the first non-comment instruction in a vertex shader.

This instruction is supported in all vertex shader versions.

Hardware accelerated versions of the software (versions without _sw in the version number), can process vertices with hardware accelearation or use software vertex processing. Software versions (versions with _sw in the version number) process vertices only with software.

Examples

This partial example declares a version 1_1 vertex shader.

vs_1_1

This partial example declares a version 2 software vertex shader.

vs_2_sw