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我们有一个 GLSL 片段着色器:但问题出在这段代码中

vec4 TFSelection(StrVolumeColorMap volumeColorMap , vec4 textureCoordinate)
{
    vec4 finalColor = vec4(0.0);

    if(volumeColorMap.TransferFunctions[0].numberOfBits == 0)
    {       
        return texture(volumeColorMap.TransferFunctions[0].TransferFunctionID,textureCoordinate.x);         
    }

    if(textureCoordinate.x == 0)
        return finalColor;

    float deNormalize = textureCoordinate.x *65535/*255*/;

    for(int i = 0; i < volumeColorMap.TransferFunctions.length(); i++)
    {
        int NormFactor = volumeColorMap.TransferFunctions[i].startBit + volumeColorMap.TransferFunctions[i].numberOfBits;

        float minval = CalculatePower(2, volumeColorMap.TransferFunctions[i].startBit);
        if(deNormalize >= minval)
        {
            float maxval = CalculatePower(2, NormFactor);
            if(deNormalize <maxval)
            {

                //float tempPower = CalculatePower(2 , NormFactor);
                float coord = deNormalize /maxval/*tempPower*/;
                return texture(volumeColorMap.TransferFunctions[i].TransferFunctionID,coord);
            }
        }
    }

    return finalColor;
}

当我们编译和链接着色器时,此消息记录:

Sampler 需要是统一的(全局或参数到 main),需要内联函数或解析条件表达式

进行简单的更改,例如着色器链接可能成功更改

float `coord = deNormalize /maxval

 float coord = deNormalize  .`

驱动程序:nvidia 320.49

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