- Last Modified Date
-
2022-02-21
- Interactions and External Dependencies
-
-
This extension provides API support for {GLSLregistry}/ext/GLSL_EXT_ray_cull_mask.txt[
GLSL_EXT_ray_cull_mask] -
Interacts with
apiext:VK_KHR_ray_tracing_pipeline -
Interacts with
apiext:VK_KHR_synchronization2
-
- Contributors
-
-
Stu Smith, AMD
-
Tobias Hector, AMD
-
Marius Bjorge, Arm
-
Tom Olson, Arm
-
Yuriy O’Donnell, Epic Games
-
Yunpeng Zhu, Huawei
-
Andrew Garrard, Imagination
-
Dae Kim, Imagination
-
Joshua Barczak, Intel
-
Lionel Landwerlin, Intel
-
Daniel Koch, NVIDIA
-
Eric Werness, NVIDIA
-
Spencer Fricke, Samsung
-
VK_KHR_ray_tracing_maintenance1 adds a collection of minor ray tracing
features, none of which would warrant an entire extension of their own.
The new features are as follows:
-
Adds support for the
SPV_KHR_ray_cull_maskSPIR-V extension in Vulkan. This extension provides access to built-in code:CullMaskKHR shader variable which contains the value of the code:OpTrace*Cull Maskparameter. This new shader variable is accessible in the intersection, any-hit, closest hit and miss shader stages. -
Adds support for a new pipeline stage and access mask built on top of
apiext:VK_KHR_synchronization2:-
ename:VK_PIPELINE_STAGE_2_ACCELERATION_STRUCTURE_COPY_BIT_KHR to specify execution of acceleration structure copy commands
-
ename:VK_ACCESS_2_SHADER_BINDING_TABLE_READ_BIT_KHR to specify read access to a shader binding table in any shader pipeline stage
-
-
Adds two new acceleration structure query parameters:
-
ename:VK_QUERY_TYPE_ACCELERATION_STRUCTURE_SIZE_KHR to query the acceleration structure size on the device timeline
-
ename:VK_QUERY_TYPE_ACCELERATION_STRUCTURE_SERIALIZATION_BOTTOM_LEVEL_POINTERS_KHR to query the number of bottom level acceleration structure pointers for serialization
-
-
Adds an optional new indirect ray tracing dispatch command, flink:vkCmdTraceRaysIndirect2KHR, which sources the shader binding table parameters as well as the dispatch dimensions from the device. The pname:rayTracingPipelineTraceRaysIndirect2 feature indicates whether this functionality is supported.