The mr Shader element
outputs the raw contribution of any mental ray shader in the scene.
This includes standard 3ds Max Design materials and maps that are converted
to mental ray shaders in the translation process. The output of
this element does not figure into the final rendered output.
For example, you could
use the mr Shader element to render a few different ambient occlusion
The mr Shader element
is intended primarily for rendering shaders, not full materials.
While you can, in most cases, most "material-style" shaders might
contain their own code to write to render elements, and in some circumstances
this can cause odd conflicts. For example, piping a Standard material
To Shader shader
the mr Shader element is not recommended because it could cause
the Standard material’s render element to collide with the original
render elements from the main render.
To use the mr Shader element:
- In the Material Editor, determine which
shader to output as a separate element. For example, an Arch &
Design material might contain a Gradient map assigned as a Diffuse Color shader, and one
of the Gradient maps could be assigned a Checker map, and one of
the Checker maps could be assigned a Noise map. This procedure will assume
you want to render the Checker map and its constituent Noise map
to an element.
So the material structure
would be like this:
A&D material Gradient (Diffuse Color) Checker (Gradient Color
#1) Noise (Checker Color
- On the Render Setup dialog Render Elements panel Render Elements rollout,
click Add. Choose the mr Shader Element item from the list.
- On the Parameters rollout for the element,
click the Shader button; this opens the Material/Map Browser dialog.
- Make sure Browse From on the dialog is
set to Scene. If the object to which the shader is applied is selected,
you could also choose Selected. In the material tree, highlight
the shader to output as an element.
NoteAny subordinate shaders
are also included in the element output.
- Set up the other Render Element parameters
as necessary and then render the scene.
Your Shader element is
rendered to an image file.
The following illustration
shows the example described in the preceding procedure. The left-hand
image shows the full material, with the Noise inside the Checker
inside the Gradient, and the right-hand image shows a Shader element
containing only the Noise inside the Checker. The element renders
the entire Checker map even though only part of it is used by the
Left: Full rendering;
Right: Shader element
The shader to render
as an element. Click the button and then choose a shader or material
from the list in the Material/Map Browser. Typically you’d want
the element to output a shader in the scene, so you’d make sure
Browse From is set to Selected or Scene.
Scales the brightness
of the rendered output.
- Apply Shadows
When on, the output includes
shadows cast on the surface.