Class 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
    Extension Type
    Device extension
    Registered Extension Number
    Extension and Version Dependencies
    • Requires Vulkan 1.0
    Deprecation state
    Last Modified Date
    IP Status
    No known IP claims.
    • Matthaeus G. Chajdas, AMD
    • Graham Sellers, AMD
    • Baldur Karlsson
    • Field Detail


        public static final int VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_SPEC_VERSION
        The extension specification version.
        See Also:
        Constant Field Values

        public static final java.lang.String VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_EXTENSION_NAME
        The extension name.
        See Also:
        Constant Field Values