In terms of graphics card drivers, Intel’s performance is relatively poor, and some magical situations often occur. Recently, Intel Linux open source driver engineer Lionel Landwerlin merged a new patch into the Intel Mesa Vulkan 22.2 open source driver, which simply changed the Intel Vulkan ray tracing code, resulting in a 100x performance improvement, “no joke”. What’s going on? In fact, it is a bug in the original driver. Instead of placing the ray tracing temporary storage in the local video memory of the graphics card, it is placed in the slower system memory, resulting in low performance. The new patch adds a line of “ANV_BO_ALLOC_LOCAL_MEM” code mark to the driver. With it, the light tracking temporary storage will be accurately placed in the video memory, resulting in a performance surge, or a return to normal. In fact, at the end of 2020, Intel began to support Vulkan ray tracing in open source drivers to meet the .
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