Ludovic Marie
33 lines
2.0 KiB
Markdown
33 lines
2.0 KiB
Markdown
# Compare the Vulkan renderer on your Mac
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The `vulkan` profile asks Minecraft 26.3 to use its existing Vulkan backend, with
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its original OpenGL fallback. It uses balanced mods/distances and omits Iris.
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The game renderer handles the backend; this project has not written a separate
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Metal renderer. The benchmark records the actual backend and driver.
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The checksum-verified 26.3 manifest includes LWJGL Vulkan 3.4.3 Mac ARM64 natives.
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Inspecting that official native JAR confirmed `libMoltenVK.dylib`; its paired
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LWJGL loader first tries MoltenVK on macOS. [MoltenVK](https://github.com/KhronosGroup/MoltenVK)
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implements Vulkan functionality over Apple's Metal framework. This verifies a
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bundled route to Metal, rather than proving that a particular Mac backend starts
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or performs better. No separately installed Vulkan SDK is required for the bundled
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library; driver/backend compatibility still needs a real Mac test.
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Import `m2-balanced` and `vulkan` as separate Prism instances. Keep Java 25 ARM64,
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heap, header/collector flags, world copies, resolution, view/simulation distance
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and camera route equal. Warm terrain and shader/pipeline caches before comparing.
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Run at least three alternating 120-second F8 recordings. Inspect nearby blocks,
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distant terrain, transparency, water, lighting and reloads as well as timings.
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Use the viewer's actual backend field: OpenGL fallback is an OpenGL result.
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After the isolated test works, `foreground-first` and `foreground-vulkan` compare
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the two backends with the same combined terrain controls. Their 120 FPS adaptive
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goal controls background duty cycle; rendering remains uncapped in pack options.
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Do not add Iris or shaders to one side of an isolated backend comparison.
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Linux software rendering checks reached the actual Vulkan backend, rendered the
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demo world and recorded matching CSV/JSON frame/tick samples. An unavailable
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Vulkan-driver test reached the menu using OpenGL fallback. These tests do not
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validate MoltenVK, real GPU speeds, all visual details or macOS 27. The user's
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M2 Pro remains the priority device for those checks.
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