`meta_promote`: Handle promotion from vec4 to quaternion

mitsuba-renderer / drjit

Dr.Jit — A Just-In-Time-Compiler for Differentiable Rendering

BSD 3-Clause "New" or "Revised" License

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`meta_promote`: Handle promotion from vec4 to quaternion #247

Closed rtabbara closed 4 months ago

rtabbara commented 4 months ago

Motivated by usage of quaternion with dr.select. We should be able to support the case where the mask is a vec4 while the other args are quaternions.