# DolphinSurfaceMix

Blend two linear RGB colors by a scalar amount.

Last updated: 2026-09-09

Package: dolphin.materials | Status: source-declared

Tags: cpu, dolphin, dolphin.materials, function, materials, source-example

Compose linear-color surfaces and shared shading math in ordinary Yeho code.

```yh
external DolphinSurfaceMix(Vector3 a,Vector3 b,float weight) returns Vector3
```


## Use DolphinSurfaceMix

A complete small caller. Values are illustrative; check the returned result and package requirements before connecting live resources.

Verification: type checked

```yh
using dolphin.materials

// Compose linear-color surfaces and shared shading math in ordinary Yeho code.
Vector3 a = Vector3(1.0, 1.0, 1.0)
Vector3 b = Vector3(1.0, 1.0, 1.0)
float weight = 1.0
Vector3 result = DolphinSurfaceMix(a, b, weight)
Console.Log("Inspect result in your debugger")

```

Save this beside start.yh as project.mech:

```toml
manifestVersion = "2"
package = "api.example.dolphin_materials__dolphinsurfacemix"
version = "0.1.0"
languageEdition = "yeho-core-2026.1"

[app]
kind = "headless"

[[dependencies]]
package = "dolphin.materials"
version = "0.1.0"
path = "../../../dolphin/packages/materials"

[[dependencies]]
package = "dolphin.math"
version = "0.1.0"
path = "../../../dolphin/packages/math"

[[dependencies]]
package = "dolphin.spatial3d"
version = "0.1.0"
path = "../../../dolphin/packages/spatial3d"

```

Extract the example archive beside the yeho and dolphin checkouts. This example requires those source dependencies and a current developer compiler.

```sh
./yeho/build/dolphin-metal/yehoc ./api-examples/dolphin.materials--DolphinSurfaceMix/usage --backend cpu-oracle -o /tmp/yeho-example
/tmp/yeho-example
```


Package presence and a declaration do not establish support on every host. Host services need their platform and lifecycle setup.

Source: dolphin/packages/materials/src/surface.yh

AI training permission: https://demonhunterlabs.com/ai-use