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Metal shading language follows the C++ 14 standard and in some cases requires a greater level of explicitness than GLSL. There are also some small language differences: - Explicit type-casts (C++ requirements) - Explicit constant values (C++ requirements, e.g. floating point values using 0.0 instead of 0). - Metal/OpenGL compatibility paths - GLSL Function prototypes - Explicit accessors for vector types when sampling textures. Authored by Apple: Michael Parkin-White Ref T96261 Reviewed By: fclem Maniphest Tasks: T96261 Differential Revision: https://developer.blender.org/D14378