Go to: Related nodes. Attributes.
Bump3d is a utility node that is useful for doing Bump
Mapping. Its job is to take the output of any 3d texture (usually
the Out Alpha attribute) and convert it to "perturbed normals" that
are used to calculate bump maps.
Certain 3d textures, such as Crater, have an Out Normal attribute
built right into them. They can be connected directly to a shader
to do bump mapping. The others need to go through a bump3d node.
Usually, the system will create the bump3d node for you when you
specify a 3d bump map texture. The Out Alpha attribute of the
texture is connected to the Bump Value attribute of the Bump3d
node, and the Out Normal attribute of the Bump3d node is connected
to the Normal Camera attribute of a shader node, such as Lambert or
Blinn or Phong.
Stucco Bump3d Blinn
--------- ------ -----
Out Alpha ----> Bump Value
Out Normal ----> Normal Camera
You can also "stack" different bump maps on top of one another. To
do this, connect the Out Normal attribute of one bump map to the
Normal Camera attribute of another.
Stucco Bump2d Marble Bump2d Blinn
------- ------ ------ ------ -----
Out Alpha --> Bump Value Out Alpha --> Bump Value
Out Normal ---------------> Normal Camera
Out Normal ----->Normal Camera
Note: If you are bump-mapping a shader that is using
environment maps, then you must connect the Out Normal attribute of
the bump node to the Normal Camera attribute of the Environment
Texture, as well as to the Normal Camera attribute of the shader.
Otherwise, the environment will not be correctly reflected in the
bumpy areas.
Stucco Bump3d EnvSphere Blinn
------ ------ --------- -----
Out Alpha --> Bump Value Out Color ------> Reflected Color
Out Normal --> Normal Camera
and --------------------> Normal Camera
You can use the other attributes of the Bump3d node to control the
depth and filtering of the bump map. In the table below, important
attributes have their names listed in bold in the
description column.
This node is MP safe
Node name |
Parents |
Classification |
MFn type |
Compatible function sets |
bump3d |
dependNode |
utility/general/bump |
kBump3d |
kBase
kNamedObject
kDependencyNode
kBump3d |
Related nodes
layeredTexture, envCube, envSphere,
envSky, envBall, envChrome,
uvChooser, bump2d, texture2d,
ramp, file,
cloth, water,
stencil, checker, fractal,
bulge, grid,
mountain, texture3d, projection, cloud,
granite, crater, leather,
stucco, brownian, solidFractal, marble, wood, rock, snow, defaultTextureList, place2dTexture, place3dTexture
Attributes (42)
bumpDepth, bumpFilter, bumpFilterOffset, bumpValue, infoBits, normalCamera, normalCameraX, normalCameraY, normalCameraZ, outNormal, outNormalX, outNormalY, outNormalZ, pointCamera, pointCameraX, pointCameraY, pointCameraZ, pointObj, pointObjX, pointObjY, pointObjZ, rayOrigin, rayOriginX, rayOriginY, rayOriginZ, refPointCamera, refPointCameraX, refPointCameraY, refPointCameraZ, refPointObj, refPointObjX, refPointObjY, refPointObjZ, tangentUCamera, tangentUx, tangentUy, tangentUz, tangentVCamera, tangentVx, tangentVy, tangentVz, xPixelAngle
Long name (short name) |
Type |
Default |
Flags |
|
pointCamera
(p ) |
float3 |
0.0, 0.0, 0.0 |
|
|
pointCameraX
(px ) |
float |
0.0 |
|
|
|
pointCameraY
(py ) |
float |
0.0 |
|
|
|
pointCameraZ
(pz ) |
float |
0.0 |
|
|
|
pointObj
(po ) |
float3 |
0.0, 0.0, 0.0 |
|
|
pointObjX
(pox ) |
float |
0.0 |
|
|
|
pointObjY
(poy ) |
float |
0.0 |
|
|
|
pointObjZ
(poz ) |
float |
0.0 |
|
|
|
refPointObj
(rpo ) |
float3 |
0.0, 0.0, 0.0 |
|
|
refPointObjX
(rpox ) |
float |
0.0 |
|
|
|
refPointObjY
(rpoy ) |
float |
0.0 |
|
|
|
refPointObjZ
(rpoz ) |
float |
0.0 |
|
|
|
refPointCamera
(rpc ) |
float3 |
0.0, 0.0, 0.0 |
|
|
refPointCameraX
(rcx ) |
float |
0.0 |
|
|
|
refPointCameraY
(rcy ) |
float |
0.0 |
|
|
|
refPointCameraZ
(rcz ) |
float |
0.0 |
|
|
|
rayOrigin
(ro ) |
float3 |
0.0, 0.0, 0.0 |
|
|
rayOriginX
(rox ) |
float |
0.0 |
|
|
|
rayOriginY
(roy ) |
float |
0.0 |
|
|
|
rayOriginZ
(roz ) |
float |
0.0 |
|
|
|
xPixelAngle
(xpa ) |
float |
0.002053 |
|
|
infoBits
(ib ) |
integer |
0 |
|
|
normalCamera
(n ) |
float3 |
0.0, 0.0, 1.0 |
|
|
normalCameraX
(nx ) |
float |
0.0 |
|
|
|
normalCameraY
(ny ) |
float |
0.0 |
|
|
|
normalCameraZ
(nz ) |
float |
0.0 |
|
|
|
tangentUCamera
(tu ) |
float3 |
1.0, 0.0, 0.0 |
|
|
tangentUx
(tux ) |
float |
0.0 |
|
|
|
tangentUy
(tuy ) |
float |
0.0 |
|
|
|
tangentUz
(tuz ) |
float |
0.0 |
|
|
|
tangentVCamera
(tv ) |
float3 |
0.0, 1.0, 0.0 |
|
|
tangentVx
(tvx ) |
float |
0.0 |
|
|
|
tangentVy
(tvy ) |
float |
0.0 |
|
|
|
tangentVz
(tvz ) |
float |
0.0 |
|
|
|
bumpDepth
(bd ) |
float |
1.0 |
|
|
bumpFilter
(bf ) |
float |
1.0 |
|
|
bumpFilterOffset
(bfo ) |
float |
0.0 |
|
|
bumpValue
(bv ) |
float |
0.0 |
|
|
outNormal
(o ) |
float3 |
0.0, 0.0, 1.0 |
|
|
outNormalX
(ox ) |
float |
0.0 |
|
|
|
outNormalY
(oy ) |
float |
0.0 |
|
|
|
outNormalZ
(oz ) |
float |
0.0 |
|
|