def - vs

Defines vertex shader constants.

Syntax

def dst, float1, float2, float3, float4

where

dst is the destination register.
float1, float2, float3, float4 are four floating point numbers.

Remarks

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

The def instruction defines a shader constant whose value is loaded anytime a shader is set to a device. These are called immediate constants. Immediate constants take precedence over constants set by API methods SetVertexShaderConstantF.

There are two ways to set a constant in a shader.

Use def - vs to define the constant directly inside a shader.
def - vs can only define floating-point constants.
Use the API methods to set a constant.
- Use IDirect3DDevice9::SetVertexShaderConstantF to set a floating-point constant.

def - vs

Syntax

Remarks

See Also