apple.metalperformanceshaders.enums

Class MPSAccelerationStructureUsage

java.lang.Object

apple.metalperformanceshaders.enums.MPSAccelerationStructureUsage

public final class MPSAccelerationStructureUsage
extends java.lang.Object

Options describing how an acceleration structure will be used

Field Summary

Fields

Modifier and Type	Field and Description
static long	FrequentRebuild Option indicating that the acceleration structure will be rebuilt frequently.
static long	None No usage options specified
static long	PreferCPUBuild Prefer building the acceleration structure on the CPU.
static long	PreferGPUBuild Prefer building the acceleration structure on the GPU.
static long	Refit Enable support for refitting the acceleration structure after it has been built.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

None

public static final long None

No usage options specified

See Also:

Constant Field Values

Refit

public static final long Refit

Enable support for refitting the acceleration structure after it has been built. This option may reduce raytracing performance so do not use it unless the acceleration structure will be refit.

See Also:

Constant Field Values

FrequentRebuild

public static final long FrequentRebuild

Option indicating that the acceleration structure will be rebuilt frequently. In this case, the acceleration structure may choose a higher performance but lower quality acceleration structure construction algorithm. This option may reduce raytracing performance performance so do not use it unless reduced acceleration structure build time is worth reduced raytracing performance. This option may be useful if, for example, the user is interactively editing a live view of the scene.

See Also:

Constant Field Values

PreferGPUBuild

public static final long PreferGPUBuild

Prefer building the acceleration structure on the GPU. By default, the acceleration structure will be built on the GPU when possible. However, in some cases such as very small triangle counts, the acceleration structure may be built on the CPU. This option will force the acceleration structure to be always be built on the GPU whenever possible.

See Also:

Constant Field Values

PreferCPUBuild

public static final long PreferCPUBuild

Prefer building the acceleration structure on the CPU. By default, the acceleration structure will be built on the GPU when possible, which is typically much faster than building on the CPU. However, in some cases it may be preferable to build on the CPU such as to avoid framerate hitches when the GPU is rendering the user interface.

See Also:

Constant Field Values