Package org.lwjgl.vulkan

Class NVRayTracingMotionBlur

java.lang.Object
org.lwjgl.vulkan.NVRayTracingMotionBlur
public final class NVRayTracingMotionBlur extends 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.

Name String
VK_NV_ray_tracing_motion_blur
Extension Type
Device extension
Registered Extension Number
328
Revision
1
Extension and Version Dependencies
VK_KHR_ray_tracing_pipeline
SPIR-V Dependencies
Contact
  • Eric Werness
Other Extension Metadata
Last Modified Date
2021-06-16
Interactions and External Dependencies
Contributors
  • Eric Werness, NVIDIA
  • Ashwin Lele, NVIDIA