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Mesh Unlit

Implements the basic render functionality for an unlit mesh. Doesn’t cast or receive shadows, that’s why it can be the base for a custom lighting implementation (e.g., raymarching). Can be used for the following objects (inherited from parent abstract material — Mesh):

Notice
Mesh Unlit has the same states and shaders available as the parent Mesh abstract material.

You can find the source code for this abstract material here: <SDK>/data/core/materials/abstract/mesh/mesh_unlit.abstmat

Features#

The Mesh Unlit abstract material has features implemented as internal states that can be enabled on demand in the child material:

States#

Mesh Unlit contains the same states as parent abstract Mesh material but adds new or modified values of some of the existing ones.

Name Default Description
static_shadow true Overrides Unigine::Mesh’s state value.
gbuffer false Enables writing of deferred buffers for the material.
transparent_blur false Enables rendering of transparent blur effect.
refraction false Enables rendering of post-processing refraction.

Shaders#

fragment#

Input data and functions are the same as for Mesh abstract material. The Unlit material implements its “unlit” functionality by using the emission buffer as an output for the resulting color and skipping deferred pipeline.

Output Data#

Name Type Description
OUT_FRAG_COLOR float4 Final fragment color as emission

Usage Example#

ULON
BaseMaterial <parent=Unigine::mesh_unlit>
{
    Texture2D albedo = "core/textures/common/checker_d.dds"
    Color albedo = [1 1 1 1]
    
    // optimization
    State static_shadow = true
    State vertex_velocity = false
    
    Shader vertex_struct =
    #{
        INIT_BASE_DATA
    #}
    
    Shader common =
    #{
        float4 sample_color(float2 uv)
        {
            return TEXTURE(tex_albedo, uv) * var_albedo;
        }
    #}
    
    Shader fragment =
    #{
        float4 color = srgbInv(sample_color(DATA_UV.xy));
        
        OUT_FRAG_EMISSION = color.rgb;
        OUT_FRAG_OPACITY = color.a;
    #}
}
Last update: 2022-02-18
Build: ()