What does this do? Shader Language

Question

I am learning shader language and I was curious, what does this do "float4(float3(0.0),1.f)"? This is not exact Unity syntax but I want to understand what float4(float3()) does.

Answer 1

Best Answer

Answer by Jessespike · Nov 23, 2015 at 10:57 PM

float3(0.0) will set all three xyz elements to 0.0. This is just a shorter way of typing float3(0.0, 0.0, 0.0). So the float4's xyz is being set to 0.0, and the last w is being set to 1.0

Add comment · Show 3 · Share

fireArchMage23 · Nov 24, 2015 at 02:25 PM 0

Share

So the float3 is setting the the xyz values of the float4? I am understanding you correct?

Dave-Carlile fireArchMage23 · Nov 24, 2015 at 02:43 PM 0

Share

You can think of float4 as an overloaded function that accepts various types of parameters:

 float4(float x, float y, float z, float w);
 float4(float3 f3, float w);

They all return a float4, initialized based on the parameters that are passed in.

Jessespike fireArchMage23 · Nov 24, 2015 at 06:07 PM 0

Share

You're understanding is correct.

If your question has been answered. Please, can you mark it as solved.

What does this do? Shader Language

1 Reply

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions