PFND3D12DDI_DISPATCH_RAYS_0054 callback function (d3d12umddi.h)

Launch threads of a ray generation shader.

Syntax

PFND3D12DDI_DISPATCH_RAYS_0054 Pfnd3d12ddiDispatchRays0054;

void Pfnd3d12ddiDispatchRays0054(
  D3D12DDI_HCOMMANDLIST unnamedParam1,
  const D3D12DDIARG_DISPATCH_RAYS_0054 *unnamedParam2
)
{...}

Parameters

unnamedParam1

A handle to the command list.

unnamedParam2

Pointer to the D3D12DDIARG_DISPATCH_RAYS_0054 structure.

Return value

None

Remarks

This callback can be called from graphics or compute command lists and bundles.

PFND3D12DDI_DISPATCH_RAYS_0054 invokes a grid of ray generation shader invocations. Each invocation (thread) of a ray generation shader knows its location in the overall grid, can generate arbitrary rays via PFND3D12DDI_BUILD_RAYTRACING_ACCELERATION_STRUCTURE_0054, and operates independently of other invocations. So there is no defined order of execution of threads with respect to each other.

Requirements