| // This section is included inside VK_KHR_swapchain |
| |
| == Hdr Metadata |
| |
| To improve color reproduction of content it is useful to have information |
| that can be used to better reproduce the colors as seen on the mastering |
| display. |
| That information can be provided to an implementation by calling |
| fname:vkSetHdrMetadataEXT. |
| The metadata will be applied to the specified sname:VkSwapchainKHR objects |
| at the next fname:vkQueuePresentKHR call using that sname:VkSwapchainKHR |
| object. |
| The metadata will persist until a subsequent fname:vkSetHdrMetadataEXT |
| changes it. |
| The definitions below are from the associated SMPTE 2086, CTA 861.3 and CIE |
| 15:2004 specifications. |
| |
| The definition of fname:vkSetHdrMetadataEXT is: |
| |
| [open,refpage='vkSetHdrMetadataEXT',desc='function to set Hdr metadata',type='protos'] |
| -- |
| include::../api/protos/vkSetHdrMetadataEXT.txt[] |
| |
| * pname:device is the logical device where the swapchain(s) were created. |
| * pname:swapchainCount is the number of swapchains included in |
| pname:pSwapchains. |
| * pname:pSwapchains is a pointer to the array of pname:swapchainCount |
| sname:VkSwapchainKHR handles. |
| * pname:pMetadata is a pointer to the array of pname:swapchainCount |
| sname:VkHdrMetadataEXT structures. |
| |
| include::../validity/protos/vkSetHdrMetadataEXT.txt[] |
| -- |
| |
| [open,refpage='VkXYColorEXT',desc='structure to specify X,Y chromaticity coordinates',type='structs'] |
| -- |
| include::../api/structs/VkXYColorEXT.txt[] |
| Chromaticity coordinates x and y are as specified in CIE 15:2004 |
| "`Calculation of chromaticity coordinates`" (Section 7.3) and are limited to |
| between 0 and 1 for real colors for the mastering display. |
| |
| -- |
| |
| [open,refpage='VkHdrMetadataEXT',desc='structure to specify Hdr metadata',type='structs'] |
| -- |
| include::../api/structs/VkHdrMetadataEXT.txt[] |
| |
| * pname:sType is the type of this structure. |
| * pname:pNext is `NULL` or a pointer to an extension-specific structure. |
| * pname:displayPrimaryRed is the mastering display's red primary in |
| chromaticity coordinates |
| * pname:displayPrimaryGreen is the mastering display's green primary in |
| chromaticity coordinates |
| * pname:displayPrimaryBlue is the mastering display's blue primary in |
| chromaticity coordinates |
| * pname:whitePoint is the mastering display's white-point in chromaticity |
| coordinates |
| * pname:maxLuminance is the maximum luminance of the mastering display in |
| nits |
| * pname:minLuminance is the minimum luminance of the mastering display in |
| nits |
| * pname:maxContentLightLevel is content's maximum luminance in nits |
| * pname:maxFrameAverageLightLevel is the maximum frame average light level |
| in nits |
| |
| [NOTE] |
| .Note |
| ==== |
| The validity and use of this data is outside the scope of Vulkan and thus no |
| +Valid Usage+ is given. |
| ==== |
| |
| -- |
