Hi. What you are looking for is called a "UV pass" render element in 3DS Max. This UV pass approach allows you to re-texture the object in a compositing package. The "Texture" node in Fusion allows you to replace the texture on your rendered image using the red to green shaded UV pass channel data in your 3DS Max rendered EXR image.
- Replacing a Flag Texture using a UV Pass Channel
- Replacing a flag texture.png (449.34 KiB) Viewed 1935 times
In Fusion you will find the Texture node under the
Tools > Deep Pixel > Texture menu.
Texture Node Usage:Step 1. Start by adding a Texture node to your composite.
Step 2. Connect your 3DS Max rendered multi-channel RGBA + UV pass image to the Texture node's "Input" connection. You can also connect the alpha channel from the multi-channel image to the Texture node's EffectMask if you want.
Step 3. Connect your new "replacement" flag image to the Texture node's "Texture" connection.
Sample Fusion UV Pass Re-texturing Comp:
- Code: Select all
{
Tools = ordered() {
Texture1 = Texture {
CtrlWZoom = false,
Inputs = {
Input = Input {
SourceOp = "Loader2",
Source = "Output",
},
Texture = Input {
SourceOp = "ReplacedFlagBackgound",
Source = "Output",
},
EffectMask = Input {
SourceOp = "Loader2",
Source = "Output",
}
},
ViewInfo = OperatorInfo { Pos = { 660, 115.5 } },
},
ReplacedFlagBackgound = Background {
NameSet = true,
Inputs = {
GlobalOut = Input { Value = 0, },
Width = Input { Value = 3840, },
Height = Input { Value = 1920, },
["Gamut.SLogVersion"] = Input { Value = FuID { "SLog2" }, },
Type = Input { Value = FuID { "Gradient" }, },
Start = Input { Value = { 0.5, 0 }, },
End = Input { Value = { 0.5, 1 }, },
Gradient = Input {
Value = Gradient {
Colors = {
[0] = { 1, 0.8, 0, 1 },
[0.3277591973244] = { 1, 0.8, 0, 1 },
[0.34] = { 0.81, 0, 0.015, 1 },
[0.66] = { 0.81, 0, 0.015, 1 },
[0.67] = { 0, 0, 0, 1 }
}
},
},
},
ViewInfo = OperatorInfo { Pos = { 660, 49.5 } },
},
Loader2 = Loader {
Clips = {
Clip {
ID = "Clip1",
Filename = "Comp:/flag.0000.exr",
FormatID = "OpenEXRFormat",
LengthSetManually = true,
TrimIn = 0,
TrimOut = 0,
ExtendFirst = 0,
ExtendLast = 0,
Loop = 0,
AspectMode = 0,
Depth = 0,
TimeCode = 0,
GlobalStart = 0,
GlobalEnd = 0
}
},
Inputs = {
["Gamut.SLogVersion"] = Input { Value = FuID { "SLog2" }, },
["Clip1.OpenEXRFormat.Channels"] = Input { Value = 1, },
["Clip1.OpenEXRFormat.RedName"] = Input { Value = FuID { "R" }, },
["Clip1.OpenEXRFormat.GreenName"] = Input { Value = FuID { "G" }, },
["Clip1.OpenEXRFormat.BlueName"] = Input { Value = FuID { "B" }, },
["Clip1.OpenEXRFormat.AlphaName"] = Input { Value = FuID { "A" }, },
["Clip1.OpenEXRFormat.UName"] = Input { Value = FuID { "U" }, },
["Clip1.OpenEXRFormat.VName"] = Input { Value = FuID { "V" }, },
},
ViewInfo = OperatorInfo { Pos = { 495, 115.5 } },
},
Note1 = Note {
Inputs = {
Comments = Input { Value = "This example shows how you can use the Texture node as part of a Fusion based UV Pass remapping approach to replace the texture map in a multi-channel EXR image.", }
},
ViewInfo = StickyNoteInfo {
Pos = { 436.676, -67.5417 },
Flags = {
Expanded = true
},
Size = { 485, 80.3 }
},
}
}
}
Sample Flag EXR Multi-Channel Image:
Fusion UV Pass DocumentationThe Texture node and UV Texture channels are mentioned briefly on page 425 and 431 of the
Fusion 8 User manual.pdf:
UV TextureThe UV Texture channels contain information about mapping coordinates for each pixel in the scene. This is used to apply textures wrapped to the object.
TextureThe Texture tool uses the UV channels to apply an image from the second input as a texture. This can replace textures on a specific object when used in conjunction with the object ID or material ID masks.
The Texture Tool is also mentioned on page 305 of the
Fusion 8 Tool Manual.pdf file:
TextureThe Texture tool can control the texture mapping of elements in a rendered image. The texture- map image (connected to the green input) can be wrapped around objects to replace the current texture. The Texture tool relies on the presence of U and V Map channels in 3D rendered images. If these channels are not present, this tool has no effect.
Note: Background pixels may have U and V values of 0.0, which will set those pixels to the color of the texture’s corner pixel. To restrict texturing to specific objects, use an effect mask based on the alpha of the object, or its Object or Material ID channel. For more information, see the Auxiliary Channels chapter.
Swap UVWhen this checkbox is selected the U and V channels of the source image are swapped.
Flip Horizontal and VerticalThe texture-map image is flipped horizontally and/or vertically when this control is toggled on.
Rotate 90The texture-map image is rotated 90 degrees when this checkbox is enabled.
U and V ScaleThese controls change the scaling of the U and V coordinates used to map the texture. Changing these values effectively enlarges and shrinks the texture map as it is applied.
U and V OffsetAdjust these controls to offset the U and V coordinates. Changing the values causes the texture to appear to move along the geometry of the object.
Mon Jul 10, 2017 2:46 pm
