org.lwjgl.vulkan

Class AMDNegativeViewportHeight

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 subsequently 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

Field Summary

Fields

Modifier and Type	Field and 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