To initialize scratch memory for a particular execution graph, call:
// Provided by VK_AMDX_shader_enqueue void vkCmdInitializeGraphScratchMemoryAMDX( VkCommandBuffer commandBuffer, VkDeviceAddress scratch);
commandBufferis the command buffer into which the command will be recorded.
scratchis a pointer to the scratch memory to be initialized.
This command must be called before using
scratch to dispatch the
currently bound execution graph pipeline.
Execution of this command may modify any memory locations in the range
size is the value
returned in VkExecutionGraphPipelineScratchSizeAMDX::
VkExecutionGraphPipelineScratchSizeAMDX for the currently bound
execution graph pipeline.
Accesses to this memory range are performed in the
VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT pipeline stage with the
VK_ACCESS_2_SHADER_STORAGE_WRITE_BIT access flags.
If any portion of
scratch is modified by any command other than
vkCmdInitializeGraphScratchMemoryAMDX with the same execution graph,
it must be reinitialized for the execution graph again before dispatching
For more information, see the Vulkan Specification
This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.