This is the work of many contributors from Microsoft and our partners.
Thank you all!
Add support for 64-bit atomics, compute shader derivatives, dynamic
resources (from heap), 8-bit Packed Operations, and Wave Size.
All of these require compiling with 6_6 targets with just a few
exceptions. Each of these features include unittests and Execution
tests.
64-bit atomics add 64-bit variants of all Interlocked* intrinsic
operations. This involves changing some of the code that matches
intrinsic overloads to call instructions. Also adds a few float
intrinsics for compare and exchange interlocked ops which are available
for all shader models 6.0 and up.
Compute shader derivatives adds dd[x|y], CalculateLevelOfDetail, and
Sample operations that require derivatives to compute. QuadRead
operations have been allowed in compute from 6.0+ and tests are added
for them here.
Dynamic resources introduce global arrays that represent the resource
and sampler heaps that can be indexed without requiring root signature
representations. This involves a new way of creating and annotating
resource handles.
8-bit Packed operations introduces a set of intrinsics to pack and
unpack 8-bit values into and out of new 32-bit unsigned types that can
be trivially converted to and from uints.
WaveSize introduces a shader attribute that indicates what size the
shader depends on the wave being. If the runtime has a different wave
size, trying to create a pipeline with this size will fail.
Greg Roth
Xiang Li