This forces your application to do copies to get data across CPUGPU. UAV/CBV descriptors can only be made on resources from default heaps (so no upload/readback heaps).As a byproduct, the descriptor range flag D3D12_DESCRIPTOR_RANGE_FLAG_DESCRIPTORS_STATIC_KEEPING_BUFFER_BOUNDS_CHECKS in root signatures is not supported.Implementations do not have to implement bounds checking on shader accesses to resources through descriptors, out of bounds accesses produce undefined behavior.Support for 64 UAVs like Feature Level 11.1+ (as opposed to only 8).Support for resource binding tier 1 only.D3D12_HEAP_FLAG_ALLOW_SHADER_ATOMICS (note shader atomics are required, this flag is for another feature, cross adapter atomics).No support for any of these heap flags:.No support for reserved (tiled) resources.Supported resource dimensions: raw and structured buffers only (no typed buffers, texture1d/2D, etc.).Resource management model for Core devices The runtime performs conversion of 5.x non DXIL shader models to 6.0 DXIL. Shader model for Core devicesĪ Core device supports Shader Model 5.0+. That set of features is defined later in this topic. If you specify a _CORE feature level, then the runtime/debug layer validates that the features your application uses are allowed by that _CORE feature level. On the other hand, if you specify a Core feature level (for example, D3D_FEATURE_LEVEL::D3D_FEATURE_LEVEL_1_0_CORE), then the device that's returned could be feature-rich, or it could be a Core device. A Core device is never returned for that range of feature levels. If you specify a feature level of 9 through 12, then the device that's returned is a feature-rich device, such as a traditional GPU (which supports a superset of the functionality of a Core device). In general, to create a Direct3D 12 device, you call the D3D12CreateDevice function, and specify a minimum feature level. Compute-only device, MCDM device, Core Feature Level device, and Core device all mean the same thing.

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