Types and Values

DreamShaderLang uses shader-style scalar and vector types, plus Unreal-facing texture and parameter node types.

Scalar Types

Type	Meaning
`float`	Floating-point scalar.
`int`	Integer scalar.
`bool`	Boolean value.

Vector Types

Type	Components
`vec2` / `float2`	2-component vector.
`vec3` / `float3`	3-component vector.
`vec4` / `float4`	4-component vector.

GLSL-style Aliases

DreamShaderLang accepts common GLSL-style names such as vec2, vec3, and vec4. HLSL-style aliases such as float2, float3, and float4 are also commonly used.

Texture Types

Type	Notes
`Texture2D`	2D texture.
`TextureCube`	Cube texture.
`Texture3D` / `VolumeTexture`	Volume texture support used by plugin and editor completion.

MaterialAttributes

MaterialAttributes represents Unreal material attribute structs, useful for Material Layer and Layer Blend workflows.

Inputs = {
    MaterialAttributes BaseMaterial;
}

Parameter Node Types

Use explicit parameter node types when you need Unreal parameter metadata:

Type	Typical value
`ScalarParameter`	`1.0`
`VectorParameter`	`float4(1, 1, 1, 1)`
`TextureObjectParameter`	`Path("/Game/...")` or default texture reference
`StaticSwitchParameter`	`true` / `false`

Literals

Scalars

float Roughness = 0.5;
int Count = 4;
bool Enabled = true;

Vector Construction

vec3 Color = vec3(1.0, 0.2, 0.1);
float4 Packed = float4(Color, 1.0);

Brace Initializer

Brace initializers are used in sections and metadata lists:

Properties = {
    float Strength = 1.0;
}

Strings

Strings are used for Unreal setting values, class names, package paths, and metadata:

Settings = {
    Domain = "UI";
}

`Path(...)`

Path(...) is used for Unreal asset references:

TextureObjectParameter Noise = Path("/Game/Textures/T_Noise.T_Noise");

Removed Aliases

Avoid relying on old aliases that have been removed or deprecated. Prefer the explicit types documented here, especially for texture and parameter node declarations.

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