defb - ps

Defines a boolean constant value, which should be loaded any time a shader is set to a device.

Syntax

defb dest, booleanValue

 

where

• dst is the destination register.
• booleanValue is a single boolean value, either true or false.

Remarks

Pixel shader versions	1_1	1_2	1_3	1_4	2_0	2_x	2_sw	3_0	3_sw
defb						x	x	x	x

 

The defb instruction defines a boolean 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 the API method SetPixelShaderConstantB.

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

1. Use defb to define the constant directly inside a shader.
2. Use the API methods to set a constant.
   • Use SetPixelShaderConstantB to set a Boolean constant.

Related topics

Pixel Shader Instructions

def - ps

defi - ps