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Quellcode

VECTOR vPosition;
VECTOR vDirection;

technique TECHNIQUE1
{
    pass PASS1
    {
        // Einen Richtungslicht erstellen
        LightType[0] = DIRECTIONAL;
        LightDiffuse[0]   = {1.0, 1.0, 1.0};
        LightSpecular[0]  = {1.0, 1.0, 1.0}; 
        LightAmbient[0]   = {0.1, 0.1, 0.1};
        LightDirection[0] = {0.0, -1, 1.0};

        // Einen Spotlicht erstellen
        LightType[1] = SPOT;
        LightDiffuse[1]   = {1.0, 1.0, 1.0};
        LightSpecular[1]  = {1.0, 1.0, 1.0}; 
        LightAmbient[1]   = {0.1, 0.1, 0.1};
        LightPosition[1] = <vPosition>;
        LightDirection[1] = <vDirection>;
        LightRange[1] = 1000;
        LightTheta[1] = 0.523;
        LightPhi[1]   = 1.57;
        LightAttenuation0[1] = 0.0;
        LightAttenuation1[1] = 0.025;
        LightAttenuation2[1] = 0.0;
        LightFalloff[1]      = 1.0;

        // Licht einschalten
        LightEnable[0] = True;
        LightEnable[1] = True;
        Lighting = True;
    }
}

C-/C++-Quelltext

    // Die Richtung und die Position des Spotlichts setzen

    D3DXVECTOR4 vSpotPosition;
    D3DXVECTOR4 vSpotDirection;
    vSpotPosition.x = g_vCameraPosition.x;
    vSpotPosition.y = g_vCameraPosition.y;
    vSpotPosition.z = g_vCameraPosition.z;
    vSpotPosition.w = 0.0f;
    vSpotDirection.x = vCameraDirection.x;
    vSpotDirection.y = vCameraDirection.y;
    vSpotDirection.z = vCameraDirection.z;
    vSpotDirection.w = 0.0f;

    // Die Werte in den Effekt übertragen

    if(FAILED(hResult = g_pEffect->GetEffect()->SetVector("vPosition", &vSpotPosition)))
    {
        // Fehler!

        TB_ERROR_DIRECTX("g_pEffect->GetEffect", hResult, TB_ERROR);
    }
    
    if(FAILED(hResult = g_pEffect->GetEffect()->SetVector("vDirection", &vSpotDirection))) 
    {
        // Fehler!

        TB_ERROR_DIRECTX("g_pEffect->GetEffect()->SetVector", hResult, TB_ERROR);
    }

    // Den Effekt (Licht, Render-States..) setzen und speichern

    int iNumPasses = g_pEffect->Begin(FALSE, TRUE);         
    for(int iPass = 0; iPass < iNumPasses; iPass++)
    {
        g_pEffect->Pass(iPass);                         
    }
    g_pEffect->End();