input block

The input block specifies the values to be received from the previous shader stage. Specify the name of the target shader stage next to input (e.g., vertex or fragment). Note that variables with the VS_OUT_POSITION semantic cannot be received. If you want to use the vertex coordinates in the next shader stage, pass the vertex coordinates to another variable that does not have the VS_OUT_POSITION semantic, as shown in the implementation example below.

Also, since vertex attributes act as the inputs to the vertex shader, you cannot write an input block for the vertex shader.

Implementation Example:

output vertex
{
    vec4 outPos : VS_OUT_POSITION;
    vec3 WorldNormal;
    vec3 WorldPos;
    vec2 uv;
}

input fragment
{
    vec3 WorldPos;
    vec3 WorldNormal;
    vec2 uv;
}

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