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