defi (Pixel Shader)

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

Syntax

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

Remarks

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 application programming interface (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 IDirect3DDevice9::SetPixelShaderConstantB to set a Boolean constant.
   • Use IDirect3DDevice9::SetPixelShaderConstantF to set a floating-point constant.
   • Use IDirect3DDevice9::SetPixelShaderConstantI to set an integer constant.

Instruction Information