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Passes

Specifies shaders and their defines to be used during the specific pass. The shaders are compiled for the specified render pass using the defines specified in attributes.

The syntax is the following:

ULON
Pass render_pass_name
{
	Vertex = deferred_shader
	Fragment = deferred_shader
}
Notice
You can specify various types of shaders in the pass (see the list of available shaders in UNIGINE).

You can check the current pass in the shader using the following defines:

UUSL
PASS_<pass name>

Types of Passes#

  • custom_pass_name (string) — name of a custom rendering pass (up to 32 custom passes are supported)
  • wireframewireframe pass
  • visualizer_solidvisualizer solid pass
  • lightmap_datalightmap baking pass
  • deferreddeferred pass
  • auxiliaryauxiliary pass
  • emissionemission pass
  • refractionrefraction pass
  • reflectionreflection pass
  • transparent_blurtransparent blur pass
  • ambientambient pass
  • light_environment_probeEnvironment Probe light pass
  • light_voxel_probeVoxel Probe light pass
  • light_omniomni-directional light pass
  • light_projprojected light pass
  • light_worldworld light pass (called only when there are more than one WorldLight present in the world)
  • light_allenvironment probe, omni-directional light, projected light, world light passes
  • depth_pre_passnative depth pre-pass
  • ms_depthSRAA pass
  • shadowshadows pass
  • postpost-process pass
  • object_postobject post-process pass
  • procedural_decalsprocedural decals pass
  • procedural_fieldsprocedural fields pass

Usage Examples#

ULON
Pass deferred 
{
	Vertex = deferred_shader
	Fragment = deferred_shader
}
	
Pass shadow 
{
	Vertex = deferred_shader
	Fragment = deferred_shader
}

Pass depth_pre_pass 
{
	Vertex = depth_pre_pass_shader
	Fragment = depth_pre_pass_shader
}
	
Pass ms_depth 
{
	Vertex = depth_pre_pass_shader
	Fragment = depth_pre_pass_shader
}
Notice
If the vertex shader isn't specified, the default core/shaders/common/empty.vert shader will be used.

Besides the shader node you can specify the relative path (as a string) to the file containing shader code in UUSL:

ULON
Pass lightmap_data
{
	Vertex = "core/shaders/mesh/lightmap_data.shader"
	Fragment = "core/shaders/mesh/lightmap_data.shader"
}

It is also possible to write inline shaders inside the Pass node (put them inside the #{ … }# construct):

ULON
Pass name
{
	Geometry = 
	#{
		// UUSL code
	}#
}

Arguments#

defines#

String

Definitions that will be passed to the shader.

Usage Example:

ULON
defines="MY_DEFINE=32,MY_DEFINE_2"
Notice
You can list multiple defines separated by a comma without any space. To specify a value for a define, write the value after the equals sign symbol.

node#

String

Specifies the type of a node for which this pass will be used (by default - all node types).

Available values:

Usage Example#

ULON
Pass ambient <defines="BOX,HEIGHT" node=ObjectVolumeBox>
{
	Vertex = volume_shader
	Fragment = volume_shader
}

Pass ambient <defines="SPHERE,HEIGHT" node=ObjectVolumeSphere>
{
	Vertex = volume_shader
	Fragment = volume_shader
}
Last update: 2022-04-06
Build: ()