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
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VK_EXT_SWAPCHAIN_COLOR_SPACE_SPEC_VERSION
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Extending VkColorSpaceKHR: - 
VK_COLOR_SPACE_ADOBERGB_LINEAR_EXT
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VK_COLOR_SPACE_ADOBERGB_NONLINEAR_EXT
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VK_COLOR_SPACE_BT2020_LINEAR_EXT
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VK_COLOR_SPACE_BT709_LINEAR_EXT
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VK_COLOR_SPACE_BT709_NONLINEAR_EXT
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VK_COLOR_SPACE_DCI_P3_LINEAR_EXT
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VK_COLOR_SPACE_DCI_P3_NONLINEAR_EXT
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VK_COLOR_SPACE_DISPLAY_P3_LINEAR_EXT
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VK_COLOR_SPACE_DISPLAY_P3_NONLINEAR_EXT
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VK_COLOR_SPACE_DOLBYVISION_EXT
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VK_COLOR_SPACE_EXTENDED_SRGB_LINEAR_EXT
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VK_COLOR_SPACE_EXTENDED_SRGB_NONLINEAR_EXT
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VK_COLOR_SPACE_HDR10_HLG_EXT
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VK_COLOR_SPACE_HDR10_ST2084_EXT
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VK_COLOR_SPACE_PASS_THROUGH_EXT
 
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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) - 
Initial version 
 
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Revision 2, 2017-01-19 (Courtney Goeltzenleuchter) - 
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) - 
Add extended sRGB non-linear enum. 
 
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Revision 4, 2019-04-26 (Graeme Leese) - 
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) - 
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.