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//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK):-cpu -output-using-type -compile-arg -msvc-style-bitfield-packing
// With MSVC packing, bitfields are packed from MSB to LSB
// and new backing fields start when type sizes change
// CHECK: 123
// CHECK-NEXT: 4567
// CHECK-NEXT: 0
// CHECK-NEXT: 0
//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<uint> outputBuffer;
struct S {
int foo : 8; // Packed in bits 31-24
uint bar : 24; // Packed in bits 23-0
};
[numthreads(1, 1, 1)]
void computeMain()
{
S s;
s.foo = 123;
s.bar = 4567;
outputBuffer[0] = s.foo;
outputBuffer[1] = s.bar;
s.foo = 0;
s.bar = 0;
outputBuffer[2] = s.foo;
outputBuffer[3] = s.bar;
}
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