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Shader Type

  • Article

The syntax for declaring a shader variable in an effect changed from Direct3D 9 to Direct3D 10.

Shader Type for Direct3D 10

Declare a shader variable within an effect pass (in Direct3D 10) using the shader type syntax:
SetPixelShader Compile( ShaderTarget, ShaderFunction ); SetGeometryShader Compile( ShaderTarget, ShaderFunction ); SetVertexShader Compile( ShaderTarget, ShaderFunction );

Parameters

Item Description
SetXXXShader
 The Direct3D API call that creates the shader object. Can be either: SetPixelShader or SetGeometryShader or SetVertexShader.
ShaderTarget
 The shader model to compile against. This is valid for any target including all Direct3D 9 targets plus the shader model 4 targets: vs_4_0, gs_4_0, and ps_4_0.
ShaderFunction
 An ASCII string that contains the name of the shader entry point function; this is the function that begins execution when the shader is invoked. The (...) represents the shader arguments; these are the same arguments passed to the shader creation API's: VSSetShader or GSSetShader or PSSetShader.

Example

Here is an example that creates a vertex shader and pixel shader object, compiled for a particular shader model. In the Direct3D 10 example, there is no geometry shader, so the pointer is set to NULL.

// Direct3D 10
technique10 Render
{
    pass P0
    {
        SetVertexShader( CompileShader( vs_4_0, VS() ) );
        SetGeometryShader( NULL );
        SetPixelShader( CompileShader( ps_4_0, PS() ) );
    }
}

Shader Type for Direct3D 9

Declare a shader variable within an effect pass (for Direct3D 9) using the shader type syntax:
PixelShader = compile ShaderTarget ShaderFunction(...);VertexShader = compile ShaderTarget ShaderFunction(...);

Parameters

Item Description
XXXShader
 A shader variable, which represents the compiled shader. Can be either: PixelShader or VertexShader.
ShaderTarget
 The shader model to compile against; depends on the type of shader variable.
ShaderFunction(...)
 An ASCII string that contains the name of the shader entry point function; this is the function that begins execution when the shader is invoked. The (...) represents the shader arguments; these are the same arguments passed to the shader creation API's: SetVertexShader or SetPixelShader.

Example

Here is an example of a vertex shader and pixel shader object, compiled for a particular shader model.

// Direct3D 9
technique RenderSceneWithTexture1Light
{
    pass P0
    {          
        VertexShader = compile vs_2_0 RenderSceneVS( 1, true, true );
        PixelShader  = compile ps_2_0 RenderScenePS( true );
    }
}

See also

Data Types (DirectX HLSL)