Passing a float3 / vec3 to a shader via unity properties

Question

I am writing a shader and I would like to pass a vec3 along to the input. however everything I could find is always passing either a single float a vec4, texture or number range. Is it possible to send a vanilla vec3 along to a shader in unity?

Properties
{
    offset ("formula Offset", Vector) = (0, 0, 0)
}

Doesn't seem to work as I hoped. To get it to compile I have been doing this:

Properties
{
    offset ("formula Offset", Vector) = (0, 0, 0, 0)
}

// offset.xyz //Extract relevant data from vector

this just doesn't feel right. Is there a better way?

Solution

Looks like when you mark a property as Vector it has to have 4 components. Even the documentation says: "Vector properties are displayed as four number fields."

This really isn't as bad as it looks, just set the last components to zero.

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Note that annoyingly the matching variable is NOT "vector", it's "float4".

Full list:

https://stackoverflow.com/a/37749687/294884

Comments

[17th Dimension]

I found a bonus that makes it look a little better when I declare it as a uniform in the shader, I just put vec3 and it ignores the extra value I've also found the Shader.setGlobal method contains both matrixes and Vector3