Package org.lwjgl.vulkan

Class NVRayTracingMotionBlur

java.lang.Object

org.lwjgl.vulkan.NVRayTracingMotionBlur

public final class NVRayTracingMotionBlur
extends java.lang.Object

Ray tracing support in the API provides an efficient mechanism to intersect rays against static geometry, but rendering algorithms often want to support motion, which is more efficiently supported with motion-specific algorithms. This extension adds a set of mechanisms to support fast tracing of moving geometry:

• A ray pipeline trace call which takes a time parameter
• Flags to enable motion support in an acceleration structure
• Support for time-varying vertex positions in a geometry
• Motion instances to move existing instances over time

The motion represented here is parameterized across a normalized timestep between 0.0 and 1.0. A motion trace using OpTraceRayMotionNV provides a time within that normalized range to be used when intersecting that ray with geometry. The geometry can be provided with motion by a combination of adding a second vertex position for time of 1.0 using VkAccelerationStructureGeometryMotionTrianglesDataNV and providing multiple transforms in the instance using VkAccelerationStructureMotionInstanceNV.

VK_NV_ray_tracing_motion_blur

Name String

VK_NV_ray_tracing_motion_blur

Extension Type

Device extension

Registered Extension Number

328

Revision

1

Extension and Version Dependencies

• Requires Vulkan 1.0
• Requires VK_KHR_ray_tracing_pipeline

Contact

• Eric Werness

Other Extension Metadata

Last Modified Date

2021-06-16

Interactions and External Dependencies

• This extension requires SPV_NV_ray_tracing_motion_blur
• This extension provides API support for GL_NV_ray_tracing_motion_blur

Contributors

• Eric Werness, NVIDIA
• Ashwin Lele, NVIDIA

Field Summary

Fields

Modifier and Type	Field	Description
static int	VK_ACCELERATION_STRUCTURE_CREATE_MOTION_BIT_NV	Extends VkAccelerationStructureCreateFlagBitsKHR.
static int	VK_ACCELERATION_STRUCTURE_MOTION_INSTANCE_TYPE_MATRIX_MOTION_NV VK_ACCELERATION_STRUCTURE_MOTION_INSTANCE_TYPE_SRT_MOTION_NV VK_ACCELERATION_STRUCTURE_MOTION_INSTANCE_TYPE_STATIC_NV	VkAccelerationStructureMotionInstanceTypeNV - Enum specifying a type of acceleration structure motion instance data for building into an acceleration structure geometry
static int	VK_BUILD_ACCELERATION_STRUCTURE_MOTION_BIT_NV	Extends VkBuildAccelerationStructureFlagBitsKHR.
static java.lang.String	VK_NV_RAY_TRACING_MOTION_BLUR_EXTENSION_NAME	The extension name.
static int	VK_NV_RAY_TRACING_MOTION_BLUR_SPEC_VERSION	The extension specification version.
static int	VK_PIPELINE_CREATE_RAY_TRACING_ALLOW_MOTION_BIT_NV	Extends VkPipelineCreateFlagBits.
static int	VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_MOTION_TRIANGLES_DATA_NV VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_MOTION_INFO_NV VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_MOTION_BLUR_FEATURES_NV	Extends VkStructureType.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

VK_NV_RAY_TRACING_MOTION_BLUR_SPEC_VERSION

The extension specification version.

VK_NV_RAY_TRACING_MOTION_BLUR_EXTENSION_NAME

The extension name.

VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_MOTION_TRIANGLES_DATA_NV, VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_MOTION_BLUR_FEATURES_NV, VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_MOTION_INFO_NV

Extends VkStructureType.

Enum values:

• STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_MOTION_TRIANGLES_DATA_NV
• STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_MOTION_BLUR_FEATURES_NV
• STRUCTURE_TYPE_ACCELERATION_STRUCTURE_MOTION_INFO_NV

VK_BUILD_ACCELERATION_STRUCTURE_MOTION_BIT_NV

Extends VkBuildAccelerationStructureFlagBitsKHR.

VK_ACCELERATION_STRUCTURE_CREATE_MOTION_BIT_NV

Extends VkAccelerationStructureCreateFlagBitsKHR.

VK_PIPELINE_CREATE_RAY_TRACING_ALLOW_MOTION_BIT_NV

Extends VkPipelineCreateFlagBits.

VK_ACCELERATION_STRUCTURE_MOTION_INSTANCE_TYPE_STATIC_NV, VK_ACCELERATION_STRUCTURE_MOTION_INSTANCE_TYPE_MATRIX_MOTION_NV, VK_ACCELERATION_STRUCTURE_MOTION_INSTANCE_TYPE_SRT_MOTION_NV

VkAccelerationStructureMotionInstanceTypeNV - Enum specifying a type of acceleration structure motion instance data for building into an acceleration structure geometry

Description

• ACCELERATION_STRUCTURE_MOTION_INSTANCE_TYPE_STATIC_NV specifies that the instance is a static instance with no instance motion.
• ACCELERATION_STRUCTURE_MOTION_INSTANCE_TYPE_MATRIX_MOTION_NV specifies that the instance is a motion instance with motion specified by interpolation between two matrices.
• ACCELERATION_STRUCTURE_MOTION_INSTANCE_TYPE_SRT_MOTION_NV specifies that the instance is a motion instance with motion specified by interpolation in the SRT decomposition.

See Also

VkAccelerationStructureMotionInstanceNV