VkPipelineCreateFlagBits2 - Bitmask controlling how a pipeline is created

Description

• PIPELINE_CREATE_2_DISABLE_OPTIMIZATION_BIT specifies that the created pipeline will not be optimized. Using this flag may reduce the time taken to create the pipeline.

• PIPELINE_CREATE_2_ALLOW_DERIVATIVES_BIT specifies that the pipeline to be created is allowed to be the parent of a pipeline that will be created in a subsequent pipeline creation call.
• PIPELINE_CREATE_2_DERIVATIVE_BIT specifies that the pipeline to be created will be a child of a previously created parent pipeline.
• PIPELINE_CREATE_2_VIEW_INDEX_FROM_DEVICE_INDEX_BIT specifies that any shader input variables decorated as ViewIndex will be assigned values as if they were decorated as DeviceIndex.
• PIPELINE_CREATE_2_DISPATCH_BASE_BIT specifies that a compute pipeline can be used with cmdDispatchBase with a non-zero base workgroup.
• PIPELINE_CREATE_2_DEFER_COMPILE_BIT_NV specifies that a pipeline is created with all shaders in the deferred state. Before using the pipeline the application must call compileDeferredNV exactly once on each shader in the pipeline before using the pipeline.
• PIPELINE_CREATE_2_CAPTURE_STATISTICS_BIT_KHR specifies that the shader compiler should capture statistics for the pipeline executables produced by the compile process which can later be retrieved by calling getPipelineExecutableStatisticsKHR. Enabling this flag must not affect the final compiled pipeline but may disable pipeline caching or otherwise affect pipeline creation time.
• PIPELINE_CREATE_2_CAPTURE_INTERNAL_REPRESENTATIONS_BIT_KHR specifies that the shader compiler should capture the internal representations of pipeline executables produced by the compile process which can later be retrieved by calling getPipelineExecutableInternalRepresentationsKHR. Enabling this flag must not affect the final compiled pipeline but may disable pipeline caching or otherwise affect pipeline creation time. When capturing IR from pipelines created with pipeline libraries, there is no guarantee that IR from libraries can be retrieved from the linked pipeline. Applications should retrieve IR from each library, and any linked pipelines, separately.
• PIPELINE_CREATE_2_LIBRARY_BIT_KHR specifies that the pipeline cannot be used directly, and instead defines a pipeline library that can be combined with other pipelines using the PipelineLibraryCreateInfoKHR structure. This is available in ray tracing and graphics pipelines.
• PIPELINE_CREATE_2_RAY_TRACING_NO_NULL_ANY_HIT_SHADERS_BIT_KHR specifies that an any-hit shader will always be present when an any-hit shader would be executed. A NULL any-hit shader is an any-hit shader which is effectively SHADER_UNUSED_KHR, such as from a shader group consisting entirely of zeros.
• PIPELINE_CREATE_2_RAY_TRACING_NO_NULL_CLOSEST_HIT_SHADERS_BIT_KHR specifies that a closest hit shader will always be present when a closest hit shader would be executed. A NULL closest hit shader is a closest hit shader which is effectively SHADER_UNUSED_KHR, such as from a shader group consisting entirely of zeros.
• PIPELINE_CREATE_2_RAY_TRACING_NO_NULL_MISS_SHADERS_BIT_KHR specifies that a miss shader will always be present when a miss shader would be executed. A NULL miss shader is a miss shader which is effectively SHADER_UNUSED_KHR, such as from a shader group consisting entirely of zeros.
• PIPELINE_CREATE_2_RAY_TRACING_NO_NULL_INTERSECTION_SHADERS_BIT_KHR specifies that an intersection shader will always be present when an intersection shader would be executed. A NULL intersection shader is an intersection shader which is effectively SHADER_UNUSED_KHR, such as from a shader group consisting entirely of zeros.
• PIPELINE_CREATE_2_RAY_TRACING_SKIP_TRIANGLES_BIT_KHR specifies that all built-in primitives including triangles, spheres, and LSS primitives will be skipped during traversal using pipeline trace ray instructions.
• PIPELINE_CREATE_2_RAY_TRACING_SKIP_BUILT_IN_PRIMITIVES_BIT_KHR is an alias for PIPELINE_CREATE_2_RAY_TRACING_SKIP_TRIANGLES_BIT_KHR.
• PIPELINE_CREATE_2_RAY_TRACING_SKIP_AABBS_BIT_KHR specifies that AABB primitives will be skipped during traversal using pipeline trace ray instructions.
• PIPELINE_CREATE_2_RAY_TRACING_SHADER_GROUP_HANDLE_CAPTURE_REPLAY_BIT_KHR specifies that the shader group handles can be saved and reused on a subsequent run (e.g. for trace capture and replay).
• PIPELINE_CREATE_2_RAY_TRACING_ALLOW_SPHERES_AND_LINEAR_SWEPT_SPHERES_BIT_NV specifies that the pipeline is allowed to use spheres or linear swept spheres as a geometry type in the acceleration structures. Using this flag may affect performance.
• PIPELINE_CREATE_2_INDIRECT_BINDABLE_BIT_NV specifies that the pipeline can be used in combination with https://registry.khronos.org/vulkan/specs/latest/html/vkspec.html#device-generated-commands.
• PIPELINE_CREATE_2_INDIRECT_BINDABLE_BIT_EXT specifies that the pipeline can be used in a IndirectExecutionSetEXT.
• PIPELINE_CREATE_2_FAIL_ON_PIPELINE_COMPILE_REQUIRED_BIT specifies that pipeline creation will fail if a compile is required for creation of a valid Pipeline object; PIPELINE_COMPILE_REQUIRED will be returned by pipeline creation, and the Pipeline will be NULL_HANDLE.
• When creating multiple pipelines, PIPELINE_CREATE_2_EARLY_RETURN_ON_FAILURE_BIT specifies that control will be returned to the application if any individual pipeline returns a result which is not SUCCESS rather than continuing to create additional pipelines.
• PIPELINE_CREATE_2_RAY_TRACING_ALLOW_MOTION_BIT_NV specifies that the pipeline is allowed to use OpTraceRayMotionNV.
• PIPELINE_CREATE_2_RENDERING_FRAGMENT_SHADING_RATE_ATTACHMENT_BIT_KHR specifies that the pipeline will be used with a fragment shading rate attachment.
• PIPELINE_CREATE_2_RENDERING_FRAGMENT_DENSITY_MAP_ATTACHMENT_BIT_EXT specifies that the pipeline will be used with a fragment density map attachment.
• PIPELINE_CREATE_2_PER_LAYER_FRAGMENT_DENSITY_BIT_VALVE specifies that the pipeline can be used with layered fragment density maps.
• PIPELINE_CREATE_2_LINK_TIME_OPTIMIZATION_BIT_EXT specifies that pipeline libraries being linked into this library should have link time optimizations applied. If this bit is omitted, implementations should instead perform linking as rapidly as possible.
• PIPELINE_CREATE_2_RETAIN_LINK_TIME_OPTIMIZATION_INFO_BIT_EXT specifies that pipeline libraries should retain any information necessary to later perform an optimal link with PIPELINE_CREATE_2_LINK_TIME_OPTIMIZATION_BIT_EXT.
• PIPELINE_CREATE_2_DESCRIPTOR_BUFFER_BIT_EXT specifies that a pipeline will be used with descriptor buffers, rather than descriptor sets.
• PIPELINE_CREATE_2_COLOR_ATTACHMENT_FEEDBACK_LOOP_BIT_EXT specifies that the pipeline may be used with an attachment feedback loop including color attachments.
• PIPELINE_CREATE_2_DEPTH_STENCIL_ATTACHMENT_FEEDBACK_LOOP_BIT_EXT specifies that the pipeline may be used with an attachment feedback loop including depth-stencil attachments.
• PIPELINE_CREATE_2_RAY_TRACING_OPACITY_MICROMAP_BIT_EXT specifies that the ray tracing pipeline can be used with acceleration structures which reference an opacity micromap array.
• PIPELINE_CREATE_2_RAY_TRACING_DISPLACEMENT_MICROMAP_BIT_NV specifies that the ray tracing pipeline can be used with acceleration structures which reference a displacement micromap array.
• PIPELINE_CREATE_2_NO_PROTECTED_ACCESS_BIT specifies that the pipeline must not be bound to a protected command buffer.
• PIPELINE_CREATE_2_PROTECTED_ACCESS_ONLY_BIT specifies that the pipeline must not be bound to an unprotected command buffer.
• PIPELINE_CREATE_2_CAPTURE_DATA_BIT_KHR specifies that PipelineBinaryKHR objects can be created from the pipeline. If PIPELINE_CREATE_2_CAPTURE_DATA_BIT_KHR is used, implementations should not store pipeline data to an internal cache, if such a cache exists as stated by pipelineBinaryInternalCache. If pipelineBinaryPrefersInternalCache is TRUE, applications should not use PIPELINE_CREATE_2_CAPTURE_DATA_BIT_KHR.
• PIPELINE_CREATE_2_ENABLE_LEGACY_DITHERING_BIT_EXT specifies that the pipeline will be used in a render pass that is begun with RENDERING_ENABLE_LEGACY_DITHERING_BIT_EXT.
• PIPELINE_CREATE_2_EXECUTION_GRAPH_BIT_AMDX specifies that the pipeline will be used in an execution graph
• PIPELINE_CREATE_2_DISALLOW_OPACITY_MICROMAP_BIT_ARM specifies that the pipeline must not be used with acceleration structures which reference an opacity micromap array.
• PIPELINE_CREATE_2_64_BIT_INDEXING_BIT_EXT specifies that the pipeline enables 64-bit indexing.
• PIPELINE_CREATE_2_DESCRIPTOR_HEAP_BIT_EXT specifies that the pipeline will use descriptor heap mappings instead of descriptor set layouts.

It is valid to set both PIPELINE_CREATE_2_ALLOW_DERIVATIVES_BIT and PIPELINE_CREATE_2_DERIVATIVE_BIT. This allows a pipeline to be both a parent and possibly a child in a pipeline hierarchy. See Pipeline Derivatives for more information.

When an implementation is looking up a pipeline in a pipeline cache, if that pipeline is being created using linked libraries, implementations should always return an equivalent pipeline created with PIPELINE_CREATE_2_LINK_TIME_OPTIMIZATION_BIT_EXT if available, whether or not that bit was specified.

Using PIPELINE_CREATE_2_LINK_TIME_OPTIMIZATION_BIT_EXT (or not) when linking pipeline libraries is intended as a performance tradeoff between host and device. If the bit is omitted, linking should be faster and produce a pipeline more rapidly, but performance of the pipeline on the target device may be reduced. If the bit is included, linking may be slower but should produce a pipeline with device performance comparable to a monolithically created pipeline. Using both options can allow latency-sensitive applications to generate a suboptimal but usable pipeline quickly, and then perform an optimal link in the background, substituting the result for the suboptimally linked pipeline as soon as it is available.

See Also

VK_KHR_maintenance5, VK_VERSION_1_4, PipelineCreateFlags2