Rendering states examples

Enable syntax

Rendering states can be conditionally enabled using value of any specialized uniform. Simply write an expression resulting in a boolean in the enable parameter. Acces other parameters values with input.parameterName syntax. Consider the following example where additive blending mode is enabled only when param1 is less than 5. For more examples and exhaustive syntax, please see the Substance Visible If documentation.

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uniform_specialization  int u_slider_param1;
 //: state blend add { "enable" : "input.u_slider_param1 < 5" }
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uniform_specialization  int u_slider_param1;
 //: state blend add { "enable" : "input.u_slider_param1 < 5" }

Backface culling

Cull back faces:

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//: state cull_face on
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//: state cull_face on

Draw front and back faces:

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//: state cull_face off
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//: state cull_face off

Blending

No blending, fully opaque objects:

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//: state blend none
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//: state blend none

Standard blending mode for back to front draw order:

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//: state blend over
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//: state blend over

Standard blending mode for back to front draw order. Assume color is pre-multiplied by alpha:

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//: state blend over_premult
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//: state blend over_premult

Additive blending mode:

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//: state blend add
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//: state blend add

Multiplicative blending mode:

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//: state blend multiply
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//: state blend multiply

Additive and multiplicative blending mode. Uses dual blending. The destination color is multiplied by the second output set by color1Output.

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//: state blend add_multiply
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//: state blend add_multiply

Shader sampling locality

By default, document channels are sampled using untransformed texture coordinates for rendering optimizations during painting.

If artifacts appear set the nonlocal state to on.

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//: state nonlocal on
 
 
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//: state nonlocal on
 
 

Last updated 10/3/2024

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