| propertyName | プロパティーの名前 |
| nameID | Shader.PropertyToID によって検索されるプロパティーの nameID |
プロパティー名から Vector4 型の値を取得します
Four component vectors and colors are the same in Unity shaders. GetVector does exactly the same
as GetColor just the input data type is different (xyzw in the vector becomes rgba in the color).
The only difference is that color values are be converted from sRGB to Linear value, when using linear color space
(see properties in shader programs).
See Also: GetColor, SetVector, Shader.PropertyToID.