46 lines
1.4 KiB
ReStructuredText
46 lines
1.4 KiB
ReStructuredText
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Zink
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====
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Overview
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--------
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The Zink driver is a Gallium driver that emits Vulkan API calls instead
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of targeting a specific GPU architecture. This can be used to get full
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desktop OpenGL support on devices that only support Vulkan.
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Debugging
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---------
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There's a few tools that are useful for debugging Zink, like this environment
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variable:
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.. envvar:: ZINK_DEBUG <flags> ("")
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``nir``
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Print the NIR form of all shaders to stderr.
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``spirv``
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Write the binary SPIR-V form of all compiled shaders to a file in the
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current directory, and print a message with the filename to stderr.
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``tgsi``
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Print the TGSI form of TGSI shaders to stderr.
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Vulkan Validation Layers
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^^^^^^^^^^^^^^^^^^^^^^^^
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Another useful tool for debugging is the `Vulkan Validation Layers
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<https://github.com/KhronosGroup/Vulkan-ValidationLayers/blob/master/README.md>`_.
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The validation layers effectively insert extra checking between Zink and the
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Vulkan driver, pointing out incorrect usage of the Vulkan API. The layers can
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be enabled by setting the environment variable :envvar:`VK_INSTANCE_LAYERS` to
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"VK_LAYER_KHRONOS_validation". You can read more about the Validation Layers
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in the link above.
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IRC
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---
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In order to make things a bit easier to follow, we have decided to create our
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own IRC channel. If you're interested in contributing, or have any technical
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questions, don't hesitate to visit `#zink on FreeNode
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<irc://irc.freenode.net/zink>`_ and say hi!
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