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More work to do but this is a minimal functional starting point. #rb halfdan.ingvarsson #preflight 609da63e046b9d00010b8246 [CL 16321681 by Jeremy Moore in ue5-main branch]
39 lines
1.4 KiB
Plaintext
39 lines
1.4 KiB
Plaintext
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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// Macro to mark a kernel entry point.
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// Only one should exist per kernel.
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#define KERNEL_ENTRY_POINT(EntryPointName) \
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void EntryPointName( \
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uint Gidx : SV_GroupIndex, \
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uint3 Gid : SV_GroupID, \
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uint3 GTid: SV_GroupThreadID, \
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uint3 DTid : SV_DispatchThreadID)
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// Macros to directly expose parameters for a kernel.
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#define KERNEL_PARAM(Type, Name) Type Name;
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// Macros to expose external functions for a kernel.
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// A kernel assumes these functions exist and are provided by its data providers.
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#define KERNEL_EXTERN_READ(Name, ...)
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#define KERNEL_EXTERN_WRITE(Name, ...)
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// Macro to disambiguate data interface code with a unique id.
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// This allows us to include more than one instance of the same data interface.
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// This should be used around all uniforms and all local (ie not DI_IMPL) functions.
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#define _DI_CAT_IMPL_(A, B) A##B
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#define _DI_CAT_(A, B) _DI_CAT_IMPL_(A, B)
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#define DI_LOCAL(Name) _DI_CAT_(DI_UID, Name)
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// Macros to expose functions implemented by a data provider.
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// This makes a local unqiue function name and expands the function prototype.
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// We could just use DI_LOCAL, but these macro also gives the possiblity to extract functions by parsing the file.
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#define DI_IMPL_READ(Name, ReturnType, ...) ReturnType DI_LOCAL(Name)(__VA_ARGS__)
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#define DI_IMPL_WRITE(Name, ...) void DI_LOCAL(Name)(__VA_ARGS__)
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