CgFX几何体着色器

Question

如何将几何体着色器与CgFX一起使用？实际上，如何在"技术"中指定几何体着色器？

列表如下，顶点着色器和片段着色器编译良好。但在我将'GeometryProgram'添加到'technique'之后，"NVIDIA FX Composer 2.5"会触发'error C3001 no program defined'。

float4x4 WorldITXf : WorldInverseTranspose;
float4x4 WorldViewProjXf : WorldViewProjection;
float4x4 WorldXf : World;
struct appdata
{
    float4 Position : POSITION;
    float4 Color    : COLOR0;
};
struct vertexOutput
{
    float4 Position : POSITION;
    float4 Color : COLOR0;
};

TRIANGLE void gshader1(AttribArray<float4> pos : POSITION,
                      AttribArray<float4> col : COLOR0)
{
//    some code will be here;
}

vertexOutput vshader1(appdata IN)
{
    vertexOutput OUT;
    float4 Po = float4(IN.Position.xyz,1.0f);
    OUT.Position = mul(WorldViewProjXf, Po);
    OUT.Color = IN.Color;
    return OUT;
}
float4 fshader1(vertexOutput IN) : COLOR
{
    return  IN.Color;
}
technique Tec1 {
    pass p0 {
        GeometryProgram = compile glslg gshader1();
        VertexProgram = compile glslv vshader1();
        FragmentProgram = compile glslf fshader1();
    }
}

Answer 1

已解决。'glslg'配置文件出现问题，将其更改为'gp4gp'可修复此问题。