This extension adds Vulkan support for the SPV_NV_compute_shader_derivatives SPIR-V extension.

The SPIR-V extension provides two new execution modes, both of which allow compute shaders to use built-ins that evaluate compute derivatives explicitly or implicitly. Derivatives will be computed via differencing over a 2x2 group of shader invocations. The DerivativeGroupQuadsNV execution mode assembles shader invocations into 2x2 groups, where each group has x and y coordinates of the local invocation ID of the form (2m+{0,1}, 2n+{0,1}). The DerivativeGroupLinearNV execution mode assembles shader invocations into 2x2 groups, where each group has local invocation index values of the form 4m+{0,1,2,3}.

Examples

None.

VK_NV_compute_shader_derivatives

Name String

VK_NV_compute_shader_derivatives

Extension Type

Device extension

Registered Extension Number

202

Revision

1

Extension and Version Dependencies

VK_KHR_get_physical_device_properties2

Contact

• Pat Brown nvpbrown

Other Extension Metadata

Last Modified Date

2018-07-19

IP Status

No known IP claims.

Interactions and External Dependencies

• This extension requires SPV_NV_compute_shader_derivatives
• This extension provides API support for GL_NV_compute_shader_derivatives

Contributors

• Pat Brown, NVIDIA