VkExecutionGraphPipelineCreateInfoAMDX

The VkExecutionGraphPipelineCreateInfoAMDX structure is defined as:

typedef struct VkExecutionGraphPipelineCreateInfoAMDX {
    VkStructureType sType;
    const void* pNext;
    VkPipelineCreateFlags flags;
    uint32_t stageCount;
    const VkPipelineShaderStageCreateInfo* pStages;
    const VkPipelineLibraryCreateInfoKHR* pLibraryInfo;
    VkPipelineLayout layout;
    VkPipeline basePipelineHandle;
    int32_t basePipelineIndex;
} VkExecutionGraphPipelineCreateInfoAMDX;

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• flags is a bitmask of VkPipelineCreateFlagBits specifying how the pipeline will be generated.
• stageCount is the number of entries in the pStages array.
• pStages is a pointer to an array of stageCount
  VkPipelineShaderStageCreateInfo structures describing the set of the shader stages to be included in the execution graph pipeline.
• pLibraryInfo is a pointer to a VkPipelineLibraryCreateInfoKHR structure defining pipeline libraries to include.
• layout is the description of binding locations used by both the pipeline and descriptor sets used with the pipeline.
• basePipelineHandle is a pipeline to derive from
• basePipelineIndex is an index into the pCreateInfos parameter to use as a pipeline to derive from

The parameters basePipelineHandle and basePipelineIndex are described in more detail in Pipeline Derivatives.

Each shader stage provided when creating an execution graph pipeline (including those in libraries) is associated with a name and an index, determined by the inclusion or omission of a VkPipelineShaderStageNodeCreateInfoAMDX structure in its pNext chain. For any graphics pipeline libraries, only the name and index of the vertex or mesh shader stage is linked directly to the graph as a node - other shader stages in the pipeline will be executed after those shader stages as normal. Task shaders cannot be included in a graphics pipeline used for a draw node.

In addition to the shader name and index, an internal "node index" is also generated for each node, which can be queried with vkGetExecutionGraphPipelineNodeIndexAMDX, and is used exclusively for initial dispatch of an execution graph.