Other Extension Metadata
- Last Modified Date
- 
2016-12-02 
- IP Status
- 
No known IP claims. 
- Contributors
- 
- 
Mathias Heyer, NVIDIA 
- 
Michael Chock, NVIDIA 
- 
Yasuhiro Yoshioka, Nintendo 
- 
Daniel Koch, NVIDIA 
 
- 
Description
The VK_NN_vi_surface extension is an instance extension.
It provides a mechanism to create a VkSurfaceKHR object (defined by
the VK_KHR_surface extension) associated with an
nn::vi::Layer.
New Enum Constants
- 
VK_NN_VI_SURFACE_EXTENSION_NAME
- 
VK_NN_VI_SURFACE_SPEC_VERSION
- 
Extending VkStructureType: - 
VK_STRUCTURE_TYPE_VI_SURFACE_CREATE_INFO_NN
 
- 
Issues
1) Does VI need a way to query for compatibility between a particular physical device (and queue family?) and a specific VI display?
RESOLVED: No. It is currently always assumed that the device and display will always be compatible.
2) VkViSurfaceCreateInfoNN::window is intended to store an
nn::vi::NativeWindowHandle, but its declared type is a bare
void* to store the window handle.
Why the discrepancy?
RESOLVED: It is for C compatibility.
The definition for the VI native window handle type is defined inside the
nn::vi C++ namespace.
This prevents its use in C source files.
nn::vi::NativeWindowHandle is always defined to be
void*, so this extension uses void* to match.
Document Notes
For more information, see the Vulkan Specification
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