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[Merged by Bors] - bevy_pbr: Avoid copying structs and using registers in shaders #7069

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[Merged by Bors] - bevy_pbr: Avoid copying structs and using registers in shaders #7069

wants to merge 1 commit into from

Commits on Jan 1, 2023

  1. bevy_pbr: Avoid copying structs 

    Use of registers is a limiting factor in shader performance. Assignment of a
struct from memory to a local variable can incur copies. Passing a variable
that has struct type as an argument to a function can also incur copies. As
such, these two cases can incur increased register usage and decreased
performance. This commit removes a number of such uses in the PBR main pass
shader.
    @superdump
    superdump committed Jan 1, 2023
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