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:

Pass render_pass_name
{
	Vertex = deferred_shader
	Fragment = deferred_shader
}

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

PASS_<pass name>

• custom_pass_name (string) — name of a custom rendering pass (up to 32 custom passes are supported)
• wireframe — the wireframe pass
• visualizer_solid — the visualizer solid pass
• lightmap_data — the lightmap baking pass
• deferred — the deferred pass
• auxiliary — the auxiliary pass
• emission — the emission pass
• refraction — the refraction pass
• reflection — the reflection pass
• transparent_blur — the transparent blur pass
• ambient — the ambient pass
• light_environment_probe — the Environment Probe light pass
• light_voxel_probe — the Voxel Probe light pass
• light_omni — the omni-directional light pass
• light_proj — the projected light pass
• light_world — the world light pass (called only when there are more than one WorldLight present in the world)
• light_all — the environment probe, omni-directional light, projected light, world light passes
• depth_pre_pass — the native depth pre-pass
• ms_depth — the SRAA pass
• shadow — the shadows pass
• post — the post-process pass
• object_post — the object post-process pass
• procedural_decals — the procedural decals pass
• procedural_fields — the procedural fields pass

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
}

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

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):

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

defines#

defines="MY_DEFINE=32,MY_DEFINE_2"

node#

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
}