org.lwjgl.vulkan

Class EXTFragmentShaderInterlock

java.lang.Object

org.lwjgl.vulkan.EXTFragmentShaderInterlock

public final class EXTFragmentShaderInterlock
extends java.lang.Object

This extension adds support for the FragmentShaderPixelInterlockEXT, FragmentShaderSampleInterlockEXT, and FragmentShaderShadingRateInterlockEXT capabilities from the SPV_EXT_fragment_shader_interlock extension to Vulkan.

Enabling these capabilities provides a critical section for fragment shaders to avoid overlapping pixels being processed at the same time, and certain guarantees about the ordering of fragment shader invocations of fragments of overlapping pixels.

This extension can be useful for algorithms that need to access per-pixel data structures via shader loads and stores. Algorithms using this extension can access per-pixel data structures in critical sections without other invocations accessing the same per-pixel data. Additionally, the ordering guarantees are useful for cases where the API ordering of fragments is meaningful. For example, applications may be able to execute programmable blending operations in the fragment shader, where the destination buffer is read via image loads and the final value is written via image stores.

Name String

VK_EXT_fragment_shader_interlock

Extension Type

Device extension

Registered Extension Number

252

Revision

1

Extension and Version Dependencies

• Requires Vulkan 1.0
• Requires VK_KHR_get_physical_device_properties2

Contact

• Piers Daniell pdaniell-nv

Last Modified Data

2019-05-02

Interactions and External Dependencies

• This extension requires the SPV_EXT_fragment_shader_interlock SPIR-V extension.
• This extension requires the GL_ARB_fragment_shader_interlock, extensions for GLSL source languages.

Contributors

• Daniel Koch, NVIDIA
• Graeme Leese, Broadcom
• Jan-Harald Fredriksen, Arm
• Jason Ekstrand, Intel
• Jeff Bolz, NVIDIA
• Ruihao Zhang, Qualcomm
• Slawomir Grajewski, Intel
• Spencer Fricke, Samsung

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	VK_EXT_FRAGMENT_SHADER_INTERLOCK_EXTENSION_NAME The extension name.
static int	VK_EXT_FRAGMENT_SHADER_INTERLOCK_SPEC_VERSION The extension specification version.
static int	VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_SHADER_INTERLOCK_FEATURES_EXT Extends VkStructureType.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

VK_EXT_FRAGMENT_SHADER_INTERLOCK_SPEC_VERSION

public static final int VK_EXT_FRAGMENT_SHADER_INTERLOCK_SPEC_VERSION

The extension specification version.

See Also:

Constant Field Values

VK_EXT_FRAGMENT_SHADER_INTERLOCK_EXTENSION_NAME

public static final java.lang.String VK_EXT_FRAGMENT_SHADER_INTERLOCK_EXTENSION_NAME

The extension name.

See Also:

Constant Field Values

VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_SHADER_INTERLOCK_FEATURES_EXT

public static final int VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_SHADER_INTERLOCK_FEATURES_EXT

Extends VkStructureType.

See Also:

Constant Field Values