AMDNegativeViewportHeight (LWJGL 3.2.1 SNAPSHOT)

java.lang.Object
- org.lwjgl.vulkan.AMDNegativeViewportHeight

```
public final class AMDNegativeViewportHeight
extends java.lang.Object
```
This extension allows an application to specify a negative viewport height. The result is that the viewport transformation will flip along the y-axis.
- Allow negative height to be specified in the VkViewport::height field to perform y-inversion of the clip-space to framebuffer-space transform. This allows apps to avoid having to use gl_Position.y = -gl_Position.y in shaders also targeting other APIs.
Obsoletion by VK_KHR_maintenance1 and Vulkan 1.1

Functionality in this extension is included in VK_KHR_maintenance1 and Vulkan 1.1. Due to some slight behavioral differences, this extension must not be enabled alongside VK_KHR_maintenance1, or in an instance created with version 1.1 or later requested in VkApplicationInfo::apiVersion.
Name String

VK_AMD_negative_viewport_height

Extension Type

Device extension

Registered Extension Number

36

Revision

1

Extension and Version Dependencies
- Requires Vulkan 1.0
Deprecation state
- Obsoleted by VK_KHR_maintenance1 extension
  
  Which in turn was promoted to Vulkan 1.1
Contact
- Matthaeus G. Chajdas anteru
Last Modified Date

2016-09-02

IP Status

No known IP claims.

Contributors
- Matthaeus G. Chajdas, AMD
- Graham Sellers, AMD
- Baldur Karlsson
Interactions and External Dependencies
- Obsoleted by VK_KHR_maintenance1
- Obsoleted by Vulkan 1.1

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_EXTENSION_NAME`	The extension name.
`static int`	`VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_SPEC_VERSION`	The extension specification version.

Method Summary
- Methods inherited from class java.lang.Object
  equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_SPEC_VERSION
```
public static final int VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_SPEC_VERSION
```
    The extension specification version.
    
    See Also:
    
    Constant Field Values
  - VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_EXTENSION_NAME
```
public static final java.lang.String VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_EXTENSION_NAME
```
    The extension name.
    
    See Also:
    
    Constant Field Values