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Per LearnOpenGL, a VARYING (now 'in' to fragment shader) variable is which?
AConstant uniform value set by CPU code
BInterpolated per-pixel value from vertex shader
CPer-vertex attribute bound from a buffer
DA texture coordinate stored on disk only
Answer & Solution
Correct answer: B. Interpolated per-pixel value from vertex shader
LearnOpenGL: per-vertex outputs are interpolated across the primitive by the rasterizer and read in the fragment shader as 'in' variables.
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