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SaschaWillems / Vulkan

C++ examples for the Vulkan graphics API
MIT License
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Gears - 8bit Per-vertex Color #1137

Closed ahcox closed 5 months ago

ahcox commented 5 months ago

Reduced Vertex size from 36 to 28 bytes, a bandwidth, power, heat, and thus battery life and performance gain for mobile devices like Android phones. Here's the before and after in ARM FrameAdvisor:

Screenshot from 2024-05-27 16-04-17

gears_8bit_color annotated

Note the vertex color could be eliminated and replaced with a push_constants of the per-object color ahead of each draw command + modifications to the shaders, but this is less intrusive and a good step along the way.

ahcox commented 5 months ago

I feel this is similar to my other PRs. Perhaps not aligned with the repo goals. Not interested in wasting your time.