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// struct-bit-cast-2.slang
// Test bit casts for read across boundaries of scalar types.
//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -vk -shaderobj -emit-spirv-directly
//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -cpu -shaderobj
//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -cuda -shaderobj
// Test that bit_cast works for bit-reinterpreting one struct type as another.
struct Foo
{
uint16_t a;
uint16_t b;
uint32_t c;
}
struct Bar
{
uint64_t d;
}
//TEST_INPUT:ubuffer(data=[0 0 0 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<int> outputBuffer;
[numthreads(1, 1, 1)]
void computeMain(int3 dispatchThreadID : SV_DispatchThreadID)
{
Bar b = { 0x1122334455667788 };
Foo f = reinterpret<Foo>(b);
// CHECK: 7788
outputBuffer[0] = f.a;
// CHECK: 5566
outputBuffer[1] = f.b;
// CHECK: 11223344
outputBuffer[2] = f.c;
uint8_t4 v = {0x10, 0x20, 0x30, 0x40};
uint32_t u = reinterpret<uint32_t>(v);
// CHECK: 40302010
outputBuffer[3] = u;
int* ptr = reinterpret<int*>(b.d);
Foo f1 = reinterpret<Foo>(ptr);
// CHECK: 11223344
outputBuffer[4] = f1.c;
}
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