Contact
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Courtney Goeltzenleuchter [GitHub]courtney-g
Other Extension Metadata
- Last Modified Date
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2019-04-26
- IP Status
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No known IP claims.
- Contributors
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Courtney Goeltzenleuchter, Google
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Description
This extension expands VkColorSpaceKHR to add support for most standard color spaces beyond VK_COLOR_SPACE_SRGB_NONLINEAR_KHR. This extension also adds support for VK_COLOR_SPACE_PASS_THROUGH_EXT which allows applications to use color spaces not explicitly enumerated in VkColorSpaceKHR.
New Enum Constants
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VK_EXT_SWAPCHAIN_COLOR_SPACE_EXTENSION_NAME -
VK_EXT_SWAPCHAIN_COLOR_SPACE_SPEC_VERSION -
Extending VkColorSpaceKHR:
Issues
1) Does the spec need to specify which kinds of image formats support the color spaces?
RESOLVED: Pixel format is independent of color space (though some color spaces really want / need floating-point color components to be useful). Therefore, do not plan on documenting what formats support which color spaces. An application can call vkGetPhysicalDeviceSurfaceFormatsKHR to query what a particular implementation supports.
2) How does application determine if HW supports appropriate transfer function for a color space?
RESOLVED: Extension indicates that implementation must not do the OETF encoding if it is not sRGB. That responsibility falls to the application shaders. Any other native OETF / EOTF functions supported by an implementation can be described by separate extension.
Version History
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Revision 1, 2016-12-27 (Courtney Goeltzenleuchter)
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Initial version
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Revision 2, 2017-01-19 (Courtney Goeltzenleuchter)
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Add pass through and multiple options for BT2020.
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Clean up some issues with equations not displaying properly.
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Revision 3, 2017-06-23 (Courtney Goeltzenleuchter)
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Add extended sRGB non-linear enum.
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Revision 4, 2019-04-26 (Graeme Leese)
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Clarify color space transfer function usage.
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Refer to normative definitions in the Data Format Specification.
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Clarify DCI-P3 and Display P3 usage.
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Revision 5, 2024-03-16 (Zehui Lin)
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Fix interchanged concepts of EOTF and OETF.
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Clarify that the presentation engine can accept the color spaces.
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Document Notes
For more information, see the Vulkan Specification.
This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.