defb - ps

  • Article

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.

Pixel Shader Instructions

def - ps

defi - ps