koobas.hobune.stream
What does this do? Shader Language
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.
Best Answer
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
So the float3 is setting the the xyz values of the float4? I am understanding you correct?
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.
You're understanding is correct.
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