void CHWTessellator::TessellateTriDomain()

in d3d/archive/images/d3d11/tessellator.cpp [967:1018]
46 lines of code
9 McCabe index (conditional complexity)

void CHWTessellator::TessellateTriDomain( float tessFactor_Ueq0, float tessFactor_Veq0, float tessFactor_Weq0, 
                                        float insideTessFactor )
{
    PROCESSED_TESS_FACTORS_TRI processedTessFactors;
    TriProcessTessFactors(tessFactor_Ueq0,tessFactor_Veq0,tessFactor_Weq0,insideTessFactor,processedTessFactors);

    if( processedTessFactors.bPatchCulled )
    {
        m_NumPoints = 0;
        m_NumIndices = 0;
        return;
    }
    else if( processedTessFactors.bJustDoMinimumTessFactor )
    {
        DefinePoint(/*U*/0,/*V*/FXP_ONE,/*pointStorageOffset*/0); //V=1 (beginning of Ueq0 edge VW)
        DefinePoint(/*U*/0,/*V*/0,/*pointStorageOffset*/1); //W=1 (beginning of Veq0 edge WU)
        DefinePoint(/*U*/FXP_ONE,/*V*/0,/*pointStorageOffset*/2); //U=1 (beginning of Weq0 edge UV)
        m_NumPoints = 3;

        switch(m_outputPrimitive)
        {
        case D3D11_TESSELLATOR_OUTPUT_TRIANGLE_CW:
        case D3D11_TESSELLATOR_OUTPUT_TRIANGLE_CCW:
            // function orients them CCW if needed
            DefineClockwiseTriangle(0,1,2,/*indexStorageBaseOffset*/m_NumIndices);
            m_NumIndices = 3;
            break;
        case D3D11_TESSELLATOR_OUTPUT_POINT:
            DumpAllPoints();
            break;
        case D3D11_TESSELLATOR_OUTPUT_LINE:
            DumpAllPointsAsInOrderLineList();
            break;
        }
        return;
    }

    TriGeneratePoints(processedTessFactors);
    
    if( m_outputPrimitive == D3D11_TESSELLATOR_OUTPUT_POINT )
    {
        DumpAllPoints();
        return;
    }
    if( m_outputPrimitive == D3D11_TESSELLATOR_OUTPUT_LINE )
    {
        DumpAllPointsAsInOrderLineList();
        return;
    }

    TriGenerateConnectivity(processedTessFactors); // can be done in parallel to TriGeneratePoints()
}