Method convertTexture

Source/Modules/USDUtils/ConvertedInput.cpp:162–350

}

ConvertedInput ConvertedInput::convertTexture(
    const UsdShadeInput& input,
    const TfToken& outputName,
    const TextureEncoding& texEncoding,
    ConvertedTexTransform& texTransform
)
{
    ConvertedInput ret;

    ret.shadeInput = input;

    // Note that the wrapS, wrapT, scale, and bias inputs are unsupported, and are ignored.

    UsdPrim prim(input.GetPrim());
    if (!prim.IsA<UsdShadeShader>())
    {
        logWarning("Expected UsdUVTexture node '{}' is not a UsdShadeShader.", prim.GetPath().GetString());
        return ret;
    }

    UsdShadeShader shader(prim);

    TfToken id = getAttribute(prim.GetAttribute(UsdShadeTokens->infoId), TfToken());
    if (id != gUVTextureToken)
    {
        logWarning("Expected UsdUVTexture node '{}' is not a UsdUVTexture.", prim.GetPath().GetString());
        return ret;
    }

    if (shader.GetInput(gWrapSToken) || shader.GetInput(gWrapTToken))
    {
        // Issue a low-priorty message, under the assumption that wrap modes most often don't matter.
        logInfo("UsdUvTexture node '{}' specifies a wrap mode, which is not supported.", prim.GetPath().GetString());
    }

    if (UsdShadeInput biasInput = shader.GetInput(gBiasToken); biasInput)
    {
        float4 value;
        if (!getFloat4Value(biasInput, value))
        {
            logWarning(
                "UsdUvTexture node '{}' specifies value scale of an unsupported type: '{}'.",
                prim.GetPath().GetString(),
                biasInput.GetTypeName().GetAsToken().GetString()
            );
        }
        else if (texEncoding == TextureEncoding::Normal)
        {
            if (any(value.xy() != float2(-1.f, -1.f)))
            {
                logWarning(
                    "UsdUvTexture normalMap node '{}' specifies a bias other than (-1, -1), which is not supported.",
                    prim.GetPath().GetString()
                );
            }
        }
        else if (any(value != float4(0.f, 0.f, 0.f, 0.f)))
        {