Turnip is the code name for Qualcomm's open-source Vulkan driver being developed on Mesa3D in a reverse-engineering effort. In 2021, major improvements were made to Turnip including implementing many Vulkan extensions and fixing bugs, making it Vulkan 1.1 compliant for some Adreno GPUs. In 2022, the focus will be on improving real world use cases like running more Windows games via emulation and improving performance, as well as supporting features of upcoming Adreno GPUs.

1. The status of
Turnip driver development
Hyunjun Ko
06 Feb 2022
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2. Contents
What's Turnip
Brief history before 2021
What happend at 2021
What'll happen in 2022
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3. What's Turnip
The code name of Qualcomm Adreno GPU's open-
source vulkan driver.
It is a reverse-engineered driver.
Being actively developed on Mesa3D.
Contributors: Igalia, Google, Mesa community.
https://gitlab.freedesktop.org/mesa/mesa
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4. Brief history before 2021
Freedreno was created by Rob Clark around mid-
2012.
Open-source OpenGL driver for Qualcomm Adreno
GPUs.
The vulkan driver development started in August
2018.
Turnip becomes a reality!
Igalia started contributing to Turnip at the beginning
of 2020.
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5. What happened at 2021
Turnip was dramatically improved by talented people.
Danylo Piliaiev, Connor Abbott, Jonathan Marek,
Emma Anholt...
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6. What happened at 2021
Implemented lots of vulkan extensions.
- VK_KHR_spirv_1_4
- VK_EXT_descriptor_indexing
- VK_KHR_timeline_semaphore
- VK_EXT_subgroup_size_control
- VK_KHR_16bit_storage / VK_KHR_shader_float16_i
- VK_KHR_uniform_buffer_standard_layout
- VK_EXT_extended_dynamic_state / VK_EXT_extende
- VK_KHR_pipeline_executable_propekties
- VK_VALVE_mutable_descriptor_type
- VK_KHR_vulkan_memory_model
- ......
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7. What happened at 2021
Bug fixes for VK-GL-CTS and other test suites.
Turnip was Vulkan 1.1 conformant for Adreno 618
GPUs!
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8. What happened at 2021
Make it run for windows games with dxvk/vkd3d on
linux/arm
with x86 emulators (Fex, Box86)
Some window games started running!
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9. What'll happen in 2022
Focusing on real world use cases.
Still not enough games running on arm.
Trying to run more window games via wine(proton)
Performance!
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10. What'll happen in 2022
A7xx is coming?
Interesting features like mesh shaders and ray
tracing.
Figure out pending unknown instructions
mostly for compute shaders
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11. Thanks for listening
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