MaterialX volume shader provides unexpected result

Hey guys, a quick thank you. Grateful for Omniverse Create. It’s amazing in a lot of directions. Testing for more than a week, super happy.

The issue: MaterialX volume shader saved from Houdini behaves differently in Omniverse Create. Full log/USDA file at the end of this message.

Possibly I’m missing something. Please let me know 🙂

Steps I’ve done:

  1. Used a VDB volume sequence provided by JangaFX.
  2. Imported into Houdini and created MaterialX volume shader. Changed absorption and scatter color, and density amount. Houdini MaterialX docs.
  3. Exported USD sequence with volume and shader (MaterialX) applied.
  4. Imported USD layers into Omniverse Create. MaterialX shader was compiled but not as I expected.
  5. I can’t scruble through the timeline. Create crashes every time. In Houdini (image below), reference with timeline scrubbing works as expected.

A complete screenshot of what I’m trying to articulate

Path-tracer used in Omniverse. Render settings on the screenshot (volume rendering ✅)

Full USDA file with VDB sequence and MaterialX binding
#usda 1.0
(
    defaultPrim = "layout"
    endTimeCode = 190
    framesPerSecond = 24
    metersPerUnit = 1
    startTimeCode = 1
    timeCodesPerSecond = 24
    upAxis = "Y"
)

def Xform "layout" (
    kind = "group"
)
{
    def Volume "groupExplosion" (
        prepend apiSchemas = ["MaterialBindingAPI"]
        kind = "component"
    )
    {
        custom rel field:density = </layout/groupExplosion/density>
        custom rel field:flames = </layout/groupExplosion/flames>
        rel material:binding = </layout/materials/smoke_cpu>
        matrix4d xformOp:transform:matchsize1 = ( (0.5000000000000001, 0, -0.8660254037844386, 0), (-0.8660254037844386, 0, -0.5000000000000001, 0), (0, 1, 0, 0), (4.23205041885376, 148, -3.3301262855529785, 1) )
        matrix4d xformOp:transform:transform1 = ( (0.5000000000000001, 0, -0.8660254037844386, 0), (-0.8660254037844386, 0, -0.5000000000000001, 0), (0, 1, 0, 0), (0, 0, 0, 1) )
        uniform token[] xformOpOrder = ["xformOp:transform:matchsize1"]

        def OpenVDBAsset "density" (
            kind = "component"
        )
        {
            int fieldIndex = 0
            token fieldName = "density"
            asset filePath.timeSamples = {
                1: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0001.vdb@,
                2: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0002.vdb@,
                3: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0003.vdb@,
                4: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0004.vdb@,
                5: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0005.vdb@,
                6: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0006.vdb@,
                7: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0007.vdb@,
                8: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0008.vdb@,
                9: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0009.vdb@,
                10: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0010.vdb@,
                11: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0011.vdb@,
                12: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0012.vdb@,
                13: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0013.vdb@,
                14: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0014.vdb@,
                15: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0015.vdb@,
                16: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0016.vdb@,
                17: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0017.vdb@,
                18: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0018.vdb@,
                19: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0019.vdb@,
                20: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0020.vdb@,
                21: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0021.vdb@,
                22: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0022.vdb@,
                23: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0023.vdb@,
                24: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0024.vdb@,
                25: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0025.vdb@,
                26: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0026.vdb@,
                27: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0027.vdb@,
                28: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0028.vdb@,
                29: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0029.vdb@,
                30: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0030.vdb@,
                31: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0031.vdb@,
                32: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0032.vdb@,
                33: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0033.vdb@,
                34: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0034.vdb@,
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                36: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0036.vdb@,
                37: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0037.vdb@,
                38: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0038.vdb@,
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                44: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0044.vdb@,
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                50: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0050.vdb@,
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                54: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0054.vdb@,
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                58: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0058.vdb@,
                59: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0059.vdb@,
                60: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0060.vdb@,
                61: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0061.vdb@,
                62: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0062.vdb@,
                63: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0063.vdb@,
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                70: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0070.vdb@,
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                75: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0075.vdb@,
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                77: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0077.vdb@,
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                100: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0100.vdb@,
                101: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0101.vdb@,
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                103: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0103.vdb@,
                104: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0104.vdb@,
                105: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0105.vdb@,
                106: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0106.vdb@,
                107: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0107.vdb@,
                108: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0108.vdb@,
                109: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0109.vdb@,
                110: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0110.vdb@,
                111: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0111.vdb@,
                112: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0112.vdb@,
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                114: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0114.vdb@,
                115: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0115.vdb@,
                116: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0116.vdb@,
                117: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0117.vdb@,
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                152: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0152.vdb@,
                153: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0153.vdb@,
                154: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0154.vdb@,
                155: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0155.vdb@,
                156: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0156.vdb@,
                157: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0157.vdb@,
                158: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0158.vdb@,
                159: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0159.vdb@,
                160: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0160.vdb@,
                161: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0161.vdb@,
                162: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0162.vdb@,
                163: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0163.vdb@,
                164: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0164.vdb@,
                165: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0165.vdb@,
                166: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0166.vdb@,
                167: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0167.vdb@,
                168: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0168.vdb@,
                169: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0169.vdb@,
                170: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0170.vdb@,
                171: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0171.vdb@,
                172: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0172.vdb@,
                173: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0173.vdb@,
                174: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0174.vdb@,
                175: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0175.vdb@,
                176: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0176.vdb@,
                177: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0177.vdb@,
                178: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0178.vdb@,
                179: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0179.vdb@,
                180: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0180.vdb@,
                181: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0181.vdb@,
                182: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0182.vdb@,
                183: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0183.vdb@,
                184: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0184.vdb@,
                185: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0185.vdb@,
                186: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0186.vdb@,
                187: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0187.vdb@,
                188: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0188.vdb@,
                189: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0189.vdb@,
                190: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0190.vdb@,
            }
        }

        def OpenVDBAsset "flames" (
            kind = "component"
        )
        {
            int fieldIndex = 0
            token fieldName = "flames"
            asset filePath.timeSamples = {
                1: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0001.vdb@,
                2: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0002.vdb@,
                3: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0003.vdb@,
                4: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0004.vdb@,
                5: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0005.vdb@,
                6: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0006.vdb@,
                7: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0007.vdb@,
                8: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0008.vdb@,
                9: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0009.vdb@,
                10: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0010.vdb@,
                11: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0011.vdb@,
                12: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0012.vdb@,
                13: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0013.vdb@,
                14: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0014.vdb@,
                15: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0015.vdb@,
                16: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0016.vdb@,
                17: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0017.vdb@,
                18: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0018.vdb@,
                19: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0019.vdb@,
                20: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0020.vdb@,
                21: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0021.vdb@,
                22: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0022.vdb@,
                23: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0023.vdb@,
                24: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0024.vdb@,
                25: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0025.vdb@,
                26: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0026.vdb@,
                27: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0027.vdb@,
                28: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0028.vdb@,
                29: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0029.vdb@,
                30: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0030.vdb@,
                31: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0031.vdb@,
                32: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0032.vdb@,
                33: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0033.vdb@,
                34: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0034.vdb@,
                35: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0035.vdb@,
                36: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0036.vdb@,
                37: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0037.vdb@,
                38: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0038.vdb@,
                39: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0039.vdb@,
                40: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0040.vdb@,
                41: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0041.vdb@,
                42: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0042.vdb@,
                43: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0043.vdb@,
                44: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0044.vdb@,
                45: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0045.vdb@,
                46: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0046.vdb@,
                47: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0047.vdb@,
                48: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0048.vdb@,
                49: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0049.vdb@,
                50: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0050.vdb@,
                51: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0051.vdb@,
                52: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0052.vdb@,
                53: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0053.vdb@,
                54: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0054.vdb@,
                55: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0055.vdb@,
                56: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0056.vdb@,
                57: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0057.vdb@,
                58: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0058.vdb@,
                59: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0059.vdb@,
                60: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0060.vdb@,
                61: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0061.vdb@,
                62: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0062.vdb@,
                63: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0063.vdb@,
                64: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0064.vdb@,
                65: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0065.vdb@,
                66: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0066.vdb@,
                67: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0067.vdb@,
                68: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0068.vdb@,
                69: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0069.vdb@,
                70: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0070.vdb@,
                71: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0071.vdb@,
                72: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0072.vdb@,
                73: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0073.vdb@,
                74: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0074.vdb@,
                75: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0075.vdb@,
                76: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0076.vdb@,
                77: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0077.vdb@,
                78: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0078.vdb@,
                79: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0079.vdb@,
                80: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0080.vdb@,
                81: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0081.vdb@,
                82: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0082.vdb@,
                83: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0083.vdb@,
                84: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0084.vdb@,
                85: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0085.vdb@,
                86: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0086.vdb@,
                87: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0087.vdb@,
                88: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0088.vdb@,
                89: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0089.vdb@,
                90: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0090.vdb@,
                91: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0091.vdb@,
                92: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0092.vdb@,
                93: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0093.vdb@,
                94: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0094.vdb@,
                95: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0095.vdb@,
                96: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0096.vdb@,
                97: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0097.vdb@,
                98: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0098.vdb@,
                99: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0099.vdb@,
                100: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0100.vdb@,
                101: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0101.vdb@,
                102: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0102.vdb@,
                103: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0103.vdb@,
                104: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0104.vdb@,
                105: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0105.vdb@,
                106: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0106.vdb@,
                107: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0107.vdb@,
                108: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0108.vdb@,
                109: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0109.vdb@,
                110: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0110.vdb@,
                111: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0111.vdb@,
                112: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0112.vdb@,
                113: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0113.vdb@,
                114: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0114.vdb@,
                115: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0115.vdb@,
                116: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0116.vdb@,
                117: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0117.vdb@,
                118: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0118.vdb@,
                119: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0119.vdb@,
                120: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0120.vdb@,
                121: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0121.vdb@,
                122: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0122.vdb@,
                123: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0123.vdb@,
                124: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0124.vdb@,
                125: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0125.vdb@,
                126: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0126.vdb@,
                127: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0127.vdb@,
                128: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0128.vdb@,
                129: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0129.vdb@,
                130: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0130.vdb@,
                131: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0131.vdb@,
                132: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0132.vdb@,
                133: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0133.vdb@,
                134: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0134.vdb@,
                135: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0135.vdb@,
                136: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0136.vdb@,
                137: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0137.vdb@,
                138: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0138.vdb@,
                139: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0139.vdb@,
                140: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0140.vdb@,
                141: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0141.vdb@,
                142: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0142.vdb@,
                143: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0143.vdb@,
                144: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0144.vdb@,
                145: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0145.vdb@,
                146: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0146.vdb@,
                147: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0147.vdb@,
                148: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0148.vdb@,
                149: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0149.vdb@,
                150: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0150.vdb@,
                151: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0151.vdb@,
                152: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0152.vdb@,
                153: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0153.vdb@,
                154: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0154.vdb@,
                155: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0155.vdb@,
                156: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0156.vdb@,
                157: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0157.vdb@,
                158: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0158.vdb@,
                159: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0159.vdb@,
                160: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0160.vdb@,
                161: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0161.vdb@,
                162: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0162.vdb@,
                163: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0163.vdb@,
                164: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0164.vdb@,
                165: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0165.vdb@,
                166: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0166.vdb@,
                167: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0167.vdb@,
                168: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0168.vdb@,
                169: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0169.vdb@,
                170: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0170.vdb@,
                171: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0171.vdb@,
                172: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0172.vdb@,
                173: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0173.vdb@,
                174: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0174.vdb@,
                175: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0175.vdb@,
                176: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0176.vdb@,
                177: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0177.vdb@,
                178: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0178.vdb@,
                179: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0179.vdb@,
                180: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0180.vdb@,
                181: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0181.vdb@,
                182: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0182.vdb@,
                183: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0183.vdb@,
                184: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0184.vdb@,
                185: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0185.vdb@,
                186: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0186.vdb@,
                187: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0187.vdb@,
                188: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0188.vdb@,
                189: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0189.vdb@,
                190: @../../models/volumes/ground-explosion/GroundExplosionVDB/ground_explosion/ground_explosion_VDB/ground_explosion_0190.vdb@,
            }
        }
    }

    def Scope "materials"
    {
        def Material "smoke_cpu" (
            prepend inherits = </__class_mtl__/smoke_cpu>
        )
        {
            token outputs:mtlx:volume.connect = </layout/materials/smoke_cpu/smoke_volume_shader.outputs:out>

            def Shader "smoke_volume_shader"
            {
                uniform token info:id = "ND_volume"
                string inputs:vdf.connect = </layout/materials/smoke_cpu/mtlxanisotropic_vdf1.outputs:out>
                token outputs:out
            }

            def Shader "mtlxanisotropic_vdf1"
            {
                uniform token info:id = "ND_anisotropic_vdf"
                vector3f inputs:absorption = (4.1, 4.1, 4.1)
                vector3f inputs:absorption.connect = </layout/materials/smoke_cpu/mtlxmultiply2.outputs:out>
                vector3f inputs:scattering = (6.4, 6.4, 6.4)
                vector3f inputs:scattering.connect = </layout/materials/smoke_cpu/mtlxmultiply1.outputs:out>
                token outputs:out
            }

            def Shader "mtlxmultiply2"
            {
                uniform token info:id = "ND_multiply_color3FA"
                color3f inputs:in1.connect = </layout/materials/smoke_cpu/absorption.outputs:out>
                float inputs:in2.connect = </layout/materials/smoke_cpu/density.outputs:out>
                color3f outputs:out
            }

            def Shader "absorption"
            {
                uniform token info:id = "ND_constant_color3"
                color3f inputs:value = (0.18304001, 0.230843, 0.352)
                color3f outputs:out
            }

            def Shader "density"
            {
                uniform token info:id = "ND_multiply_float"
                float inputs:in1.connect = </layout/materials/smoke_cpu/mtlxgeompropvalue1.outputs:out>
                float inputs:in2 = 0.45
                float outputs:out
            }

            def Shader "mtlxgeompropvalue1"
            {
                uniform token info:id = "ND_geompropvalue_float"
                string inputs:geomprop = "density"
                float outputs:out
            }

            def Shader "mtlxmultiply1"
            {
                uniform token info:id = "ND_multiply_color3FA"
                color3f inputs:in1.connect = </layout/materials/smoke_cpu/scatter.outputs:out>
                float inputs:in2.connect = </layout/materials/smoke_cpu/density1.outputs:out>
                color3f outputs:out
            }

            def Shader "scatter"
            {
                uniform token info:id = "ND_constant_color3"
                color3f inputs:value = (0.06721498, 0.08700648, 0.163)
                color3f outputs:out
            }

            def Shader "density1"
            {
                uniform token info:id = "ND_multiply_float"
                float inputs:in1.connect = </layout/materials/smoke_cpu/mtlxgeompropvalue1.outputs:out>
                float inputs:in2 = 7
                float outputs:out
            }
        }
    }
}
Log from the Console tab after USD VDB smoke sequence with MaterialX shader bind was imported
2023-11-28 13:24:52  [Warning] [omni.ext.plugin] [ext: omni.kit.scripting-104.2.2] 'c:/workspace/3d/nvidia-omniverse/library-path/create-2022.3.3/extscache/omni.kit.scripting-104.2.2+104.2.wx64.r.cp37/bin' in '[[native.plugin]]' was not found.
2023-11-28 13:26:59  [Warning] [omni.usd] Warning (secondary thread): in _ValidateProperty at line 221 of C:\b\w\ca6c508eae419cf8\USD\pxr\usd\ndr\registry.cpp -- Default value type does not match specified type for property.
2023-11-28 13:26:59  [Warning] [omni.usd] Node identifier: ND_standard_surface_surfaceshader
2023-11-28 13:26:59  [Warning] [omni.usd] Source type: mtlx
2023-11-28 13:26:59  [Warning] [omni.usd] Property name: thin_walled.
2023-11-28 13:26:59  [Warning] [omni.usd] Type from SdfType: TfToken.
2023-11-28 13:26:59  [Warning] [omni.usd] Type from default value: bool.
2023-11-28 13:26:59  [Warning] [omni.usd] 
2023-11-28 13:26:59  [Warning] [omni.usd] 
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(31,11): C183 unused parameter 'transmission_depth'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(32,11): C183 unused parameter 'transmission_scatter'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(33,11): C183 unused parameter 'transmission_scatter_anisotropy'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(34,11): C183 unused parameter 'transmission_dispersion'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(35,11): C183 unused parameter 'transmission_extra_roughness'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(31,11): C183 unused parameter 'transmission_depth'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(32,11): C183 unused parameter 'transmission_scatter'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(33,11): C183 unused parameter 'transmission_scatter_anisotropy'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(34,11): C183 unused parameter 'transmission_dispersion'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(35,11): C183 unused parameter 'transmission_extra_roughness'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(31,11): C183 unused parameter 'transmission_depth'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(32,11): C183 unused parameter 'transmission_scatter'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(33,11): C183 unused parameter 'transmission_scatter_anisotropy'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(34,11): C183 unused parameter 'transmission_dispersion'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(35,11): C183 unused parameter 'transmission_extra_roughness'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(31,11): C183 unused parameter 'transmission_depth'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(32,11): C183 unused parameter 'transmission_scatter'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(33,11): C183 unused parameter 'transmission_scatter_anisotropy'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(34,11): C183 unused parameter 'transmission_dispersion'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] [MDLC:COMPILER]   1.0   MDLC   comp warn : file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(35,11): C183 unused parameter 'transmission_extra_roughness'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] Compiler Core: file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(31,11): C183 unused parameter 'transmission_depth'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] Compiler Core: file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(32,11): C183 unused parameter 'transmission_scatter'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] Compiler Core: file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(33,11): C183 unused parameter 'transmission_scatter_anisotropy'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] Compiler Core: file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(34,11): C183 unused parameter 'transmission_dispersion'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] Compiler Core: file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(35,11): C183 unused parameter 'transmission_extra_roughness'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] Compiler Core: file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(31,11): C183 unused parameter 'transmission_depth'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] Compiler Core: file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(32,11): C183 unused parameter 'transmission_scatter'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] Compiler Core: file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(33,11): C183 unused parameter 'transmission_scatter_anisotropy'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] Compiler Core: file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(34,11): C183 unused parameter 'transmission_dispersion'
2023-11-28 13:26:59  [Warning] [rtx.neuraylib.plugin] Compiler Core: file:/C:/Users/Dmitriy/AppData/Local/Temp/xias.1/materialx_gen.mdl?watch=000002997e066580(35,11): C183 unused parameter 'transmission_extra_roughness'
2023-11-28 13:27:00  [Warning] [omni.hydra] Material parameter 'volume_density_texture' was assigned an incompatible texture: 'C:\Workspace\3D\PROJECTS\ANIMATION\render-comparison\models\volumes\ground-explosion\GroundExplosionVDB\ground_explosion\ground_explosion_VDB\ground_explosion_0000.vdb'
2023-11-28 13:27:00  [Warning] [omni.hydra] Material parameter 'volume_density_texture' was assigned an incompatible texture: 'C:\Workspace\3D\PROJECTS\ANIMATION\render-comparison\models\volumes\ground-explosion\GroundExplosionVDB\ground_explosion\ground_explosion_VDB\ground_explosion_0000.vdb'
2023-11-28 13:27:14  [Warning] [omni.hydra] Material parameter 'volume_density_texture' was assigned an incompatible texture: 'C:\Workspace\3D\PROJECTS\ANIMATION\render-comparison\models\volumes\ground-explosion\GroundExplosionVDB\ground_explosion\ground_explosion_VDB\ground_explosion_0061.vdb'
2023-11-28 13:27:15  [Warning] [omni.hydra] Material parameter 'volume_density_texture' was assigned an incompatible texture: 'C:\Workspace\3D\PROJECTS\ANIMATION\render-comparison\models\volumes\ground-explosion\GroundExplosionVDB\ground_explosion\ground_explosion_VDB\ground_explosion_0074.vdb'
2023-11-28 13:27:15  [Warning] [omni.hydra] Material parameter 'volume_density_texture' was assigned an incompatible texture: 'C:\Workspace\3D\PROJECTS\ANIMATION\render-comparison\models\volumes\ground-explosion\GroundExplosionVDB\ground_explosion\ground_explosion_VDB\ground_explosion_0073.vdb'
2023-11-28 13:27:15  [Warning] [omni.hydra] Material parameter 'volume_density_texture' was assigned an incompatible texture: 'C:\Workspace\3D\PROJECTS\ANIMATION\render-comparison\models\volumes\ground-explosion\GroundExplosionVDB\ground_explosion\ground_explosion_VDB\ground_explosion_0077.vdb'
2023-11-28 13:27:57  [Warning] [omni.hydra] Material parameter 'volume_density_texture' was assigned an incompatible texture: 'C:\Workspace\3D\PROJECTS\ANIMATION\render-comparison\models\volumes\ground-explosion\GroundExplosionVDB\ground_explosion\ground_explosion_VDB\ground_explosion_0077.vdb'
2023-11-28 13:27:57  [Warning] [omni.hydra] Material parameter 'volume_density_texture' was assigned an incompatible texture: 'C:\Workspace\3D\PROJECTS\ANIMATION\render-comparison\models\volumes\ground-explosion\GroundExplosionVDB\ground_explosion\ground_explosion_VDB\ground_explosion_0077.vdb

Thank you!

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Thanks for the post.
We do support VDB sequences, yes. I myself have used some of the vdb files from JangaFX. I can show you how to animate them inside of USD Composer. You mentioned Create. Make sure you are using the latest version which is USD Composer. Whilst we do support Material X, there may be some issues in getting the materials directly in from Houdini. Are you using our Houdini Connector ?

If you want to render in RTX then you should use one of our volume materials in MDL. But we don’t support emissive volumes. Only volume density materials (aka clouds and smoke)

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@Richard3D grateful for the reply here and in other threads! I’ll clarify/rephrase a few things 🙂

I can show you how to animate them inside of USD Composer.

It was not the issue :) I had a VDB sequence created with Omnvierse Timesample Editor and I can scruble the timeline.

The issue I had was when I saved a frame range USD file containing the same VDB smoke and MaterialX shader applied from Houdini, and couldn’t scruble through timeline because Omniverse was crushing all the time.

I haven’t noticed any difference in saving process that mentioned in Overview of the Omniverse Loader Node with the SideFX Houdini Connector and a few other videos.

Make sure you are using the latest version which is USD Composer.

I’m using version 2022.3.3. I think this one is the latest, correct?

Whilst we do support Material X, there may be some issues in getting the materials directly in from Houdini. Are you using our Houdini Connector?

No, I don’t use connector. I’m on 20x Houdini version and don’t want to revert to 19x version (Because “The Omniverse Houdini connector supports Houdini 19.x.x versions”).

The only issue based on the log output is absorption and scattering colors which MaterialX supports.

If there is no such node in Houdini it would be equal that such a thing in MaterialX does not exist.

Is it possible to check, whenever possible, on the Omniverse devs’ side, whether there was a bug (or what it was), or whether I did something wrong? if so, I can provide Houdini HIP/Omniverse files if needed for testing.

If you want to render in RTX then you should use one of our volume materials in MDL. But we don’t support emissive volumes. Only volume density materials (aka clouds and smoke)

This makes sense while I was experimenting with OmniVolume. Did you know if coloring volumes is on the roadmap to add in the future?

Thank you 🙂

the latest should be the beta versions. there is apparently a new release (2023.2.1 beta) but Richard hasn’t confirmed it’s good to download yet (*** Please do not install 2023.2.1 *** - #2), so i would suggest sticking to 2023.2.0 beta for now until further notice.

and as for the difference, he outlined the two types of releases here when addressing another user’s confusion:

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Jesus, I just noticed that by default 2022 year version was installed, not 2023. Thank you for pointing to this 🙂

However, I got this error when clicking on “Install 2023.2.1” (yes I saw the post not to install it, in any case, it wasn’t started to download anyway 😃). Not sure what’s the reason.

image

there are reports of multiple users having this issue on Discord with 2023.2.1, which i believe is why the mods have prompted us to not go through with installation (even if download is even feasible). the reason could vary and not worth speculating (for me anyway); so i’ll defer to the mods/devs regarding the exact reason.

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@Richard3D Not directly related to this thread topic, however, can you please help to understand if the 2023 version is for the Enterprise plan only?

I can see only 2022 releases:

you’d want to switch to the Beta category whilst you are under the Exchange tab:

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@Simplychenable Oh… thank you so much for clarifying. Wasn’t obvious for some reason 😰

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it’s all good. that’s the purpose of the forum 🙂 we are all learning.

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Update about the initial issue of this thread.

After installing 2023.2.0, the issue with MaterialX shader compilation remains the same.

Also, no MaterialX compile warnings this time, however, it’s not how it is supposed to look👀

unfortunately, i don’t work with MaterialX myself, so i’ll defer to the mods/devs. hope they are able to find a solution for you 🤞

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As I said before, unless there is a reason to use Houdini, you are much better off bringing the VDB directly into USD Composer 2023.2.0 and starting fresh from there. You will find it works much better. We cannot guarantee anything in Houdini, especially if you are not using our connector. Please do not use MaterialX but use our own OV volume shaders.

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