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add new spirv intrinsic unpack
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include/nbl/builtin/hlsl/spirv_intrinsics/core.hlsl

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@@ -197,6 +197,9 @@ SquareMatrix matrixInverse(NBL_CONST_REF_ARG(SquareMatrix) mat);
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[[vk::ext_instruction(GLSLstd450UnpackSnorm2x16, "GLSL.std.450")]]
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float32_t2 unpackSnorm2x16(uint32_t p);
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[[vk::ext_instruction(GLSLstd450UnpackUnorm4x8, "GLSL.std.450")]]
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float32_t4 unpackUnorm4x8(uint32_t p);
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// Memory Semantics link here: https://registry.khronos.org/SPIR-V/specs/unified1/SPIRV.html#Memory_Semantics_-id-
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// https://registry.khronos.org/SPIR-V/specs/unified1/SPIRV.html#_memory_semantics_id

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