Package org.lwjgl.vulkan

Class AMDAntiLag

java.lang.Object

org.lwjgl.vulkan.AMDAntiLag

public class AMDAntiLag
extends Object

This extension automatically paces the CPU to make sure it does not get too far ahead of the GPU, reducing the latency between inputs received and updates on the screen. Additionally, Anti-Lag+ offers applications the ability to inform the driver when input processing begins, in order to align the timing of display updates, enabling even lower latency between receiving input and displaying on the screen.

Name String

VK_AMD_anti_lag

Extension Type

Device extension

Registered Extension Number

477

Revision

1

Contact

• Stu Smith

Extension Proposal

VK_AMD_anti_lag

Other Extension Metadata

Last Modified Date

2024-06-06

IP Status

No known IP claims.

Contributors

• Tobias Hector, AMD
• Stuart Smith, AMD
• Arkadiusz Sarwa, AMD

Field Summary

Fields

Modifier and Type	Field	Description
static final String	VK_AMD_ANTI_LAG_EXTENSION_NAME	The extension name.
static final int	VK_AMD_ANTI_LAG_SPEC_VERSION	The extension specification version.
static final int	VK_ANTI_LAG_MODE_DRIVER_CONTROL_AMD	VkAntiLagModeAMD - Set the status of the anti-lag feature
static final int	VK_ANTI_LAG_MODE_OFF_AMD	VkAntiLagModeAMD - Set the status of the anti-lag feature
static final int	VK_ANTI_LAG_MODE_ON_AMD	VkAntiLagModeAMD - Set the status of the anti-lag feature
static final int	VK_ANTI_LAG_STAGE_INPUT_AMD	VkAntiLagStageAMD - Report the application stage
static final int	VK_ANTI_LAG_STAGE_PRESENT_AMD	VkAntiLagStageAMD - Report the application stage
static final int	VK_STRUCTURE_TYPE_ANTI_LAG_DATA_AMD	Extends VkStructureType.
static final int	VK_STRUCTURE_TYPE_ANTI_LAG_PRESENTATION_INFO_AMD	Extends VkStructureType.
static final int	VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ANTI_LAG_FEATURES_AMD	Extends VkStructureType.

Method Summary

Modifier and Type	Method	Description
static void	nvkAntiLagUpdateAMD(org.lwjgl.vulkan.VkDevice device, long pData)	Unsafe version of: AntiLagUpdateAMD
static void	vkAntiLagUpdateAMD(org.lwjgl.vulkan.VkDevice device, VkAntiLagDataAMD pData)	Provide information to reduce latency.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

VK_AMD_ANTI_LAG_SPEC_VERSION

public static final int VK_AMD_ANTI_LAG_SPEC_VERSION

The extension specification version.

See Also:

• Constant Field Values

VK_AMD_ANTI_LAG_EXTENSION_NAME

public static final String VK_AMD_ANTI_LAG_EXTENSION_NAME

The extension name.

See Also:

• Constant Field Values

VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ANTI_LAG_FEATURES_AMD

public static final int VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ANTI_LAG_FEATURES_AMD

Extends VkStructureType.

Enum values:

• STRUCTURE_TYPE_PHYSICAL_DEVICE_ANTI_LAG_FEATURES_AMD
• STRUCTURE_TYPE_ANTI_LAG_DATA_AMD
• STRUCTURE_TYPE_ANTI_LAG_PRESENTATION_INFO_AMD

See Also:

• Constant Field Values

VK_STRUCTURE_TYPE_ANTI_LAG_DATA_AMD

public static final int VK_STRUCTURE_TYPE_ANTI_LAG_DATA_AMD

Extends VkStructureType.

Enum values:

• STRUCTURE_TYPE_PHYSICAL_DEVICE_ANTI_LAG_FEATURES_AMD
• STRUCTURE_TYPE_ANTI_LAG_DATA_AMD
• STRUCTURE_TYPE_ANTI_LAG_PRESENTATION_INFO_AMD

See Also:

• Constant Field Values

VK_STRUCTURE_TYPE_ANTI_LAG_PRESENTATION_INFO_AMD

public static final int VK_STRUCTURE_TYPE_ANTI_LAG_PRESENTATION_INFO_AMD

Extends VkStructureType.

Enum values:

• STRUCTURE_TYPE_PHYSICAL_DEVICE_ANTI_LAG_FEATURES_AMD
• STRUCTURE_TYPE_ANTI_LAG_DATA_AMD
• STRUCTURE_TYPE_ANTI_LAG_PRESENTATION_INFO_AMD

See Also:

• Constant Field Values

VK_ANTI_LAG_MODE_DRIVER_CONTROL_AMD

public static final int VK_ANTI_LAG_MODE_DRIVER_CONTROL_AMD

VkAntiLagModeAMD - Set the status of the anti-lag feature

Description

• ANTI_LAG_MODE_DRIVER_CONTROL_AMD specifies that anti-lag will be enabled or disabled depending on driver settings.
• ANTI_LAG_MODE_ON_AMD specifies that anti-lag will be enabled.
• ANTI_LAG_MODE_OFF_AMD specifies that anti-lag will be disabled.

See Also

VkAntiLagDataAMD

See Also:

• Constant Field Values

VK_ANTI_LAG_MODE_ON_AMD

public static final int VK_ANTI_LAG_MODE_ON_AMD

VkAntiLagModeAMD - Set the status of the anti-lag feature

Description

• ANTI_LAG_MODE_DRIVER_CONTROL_AMD specifies that anti-lag will be enabled or disabled depending on driver settings.
• ANTI_LAG_MODE_ON_AMD specifies that anti-lag will be enabled.
• ANTI_LAG_MODE_OFF_AMD specifies that anti-lag will be disabled.

See Also

VkAntiLagDataAMD

See Also:

• Constant Field Values

VK_ANTI_LAG_MODE_OFF_AMD

public static final int VK_ANTI_LAG_MODE_OFF_AMD

VkAntiLagModeAMD - Set the status of the anti-lag feature

Description

• ANTI_LAG_MODE_DRIVER_CONTROL_AMD specifies that anti-lag will be enabled or disabled depending on driver settings.
• ANTI_LAG_MODE_ON_AMD specifies that anti-lag will be enabled.
• ANTI_LAG_MODE_OFF_AMD specifies that anti-lag will be disabled.

See Also

VkAntiLagDataAMD

See Also:

• Constant Field Values

VK_ANTI_LAG_STAGE_INPUT_AMD

public static final int VK_ANTI_LAG_STAGE_INPUT_AMD

VkAntiLagStageAMD - Report the application stage

Description

• ANTI_LAG_STAGE_INPUT_AMD specifies the stage before processing input.
• ANTI_LAG_STAGE_PRESENT_AMD specifies the stage before QueuePresentKHR.

See Also

VkAntiLagPresentationInfoAMD

See Also:

• Constant Field Values

VK_ANTI_LAG_STAGE_PRESENT_AMD

public static final int VK_ANTI_LAG_STAGE_PRESENT_AMD

VkAntiLagStageAMD - Report the application stage

Description

• ANTI_LAG_STAGE_INPUT_AMD specifies the stage before processing input.
• ANTI_LAG_STAGE_PRESENT_AMD specifies the stage before QueuePresentKHR.

See Also

VkAntiLagPresentationInfoAMD

See Also:

• Constant Field Values

Method Details

nvkAntiLagUpdateAMD

public static void nvkAntiLagUpdateAMD(org.lwjgl.vulkan.VkDevice device,
 long pData)

Unsafe version of: AntiLagUpdateAMD

vkAntiLagUpdateAMD

public static void vkAntiLagUpdateAMD(org.lwjgl.vulkan.VkDevice device,
 VkAntiLagDataAMD pData)

Provide information to reduce latency.

C Specification

To lower latency, call:

 void vkAntiLagUpdateAMD(
     VkDevice                                    device,
     const VkAntiLagDataAMD*                     pData);

Description

This command should be executed immediately before the application processes user input. If pData is not NULL and VkAntiLagDataAMD::presentationInfo is not NULL, this command should be executed again before QueuePresentKHR, with pPresentationInfo set to matching values.

Valid Usage

• The antiLag feature must be enabled

Valid Usage (Implicit)

• device must be a valid VkDevice handle
• pData must be a valid pointer to a valid VkAntiLagDataAMD structure

See Also

VkAntiLagDataAMD

Parameters:

device - the logical device

pData - a pointer to a VkAntiLagDataAMD structure containing latency reduction parameters.