defi - ps

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

Syntax

defi dst, integerValue

 

• dst is the destination register.
• integerValue is a constant integer value.

Remarks

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

 

The defi 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 the API method SetPixelShaderConstantB.

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

1. Use defi to define the constant directly inside a shader.
2. Use the API methods to set a constant.
   • Use SetPixelShaderConstantB to set a Boolean constant.
   • Use SetPixelShaderConstantF to set a floating-point constant.
   • Use SetPixelShaderConstantI to set an integer constant.

Related topics

Pixel Shader Instructions