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//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj
/* A test using interfaces with mutation.
Doesn't work because
.slang(18): error 30050: mutating method 'lock' cannot be called on an immutable value
lockable.lock();
If that section is removed we get on `doThing(count)`
.slang(31): error 30047: argument passed to parameter '0' must be l-value.
Which perhaps means an inteface cannot be used as a lvalue?
*/
//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name outputBuffer
RWStructuredBuffer<int> outputBuffer;
interface ILockable
{
[mutating] void lock();
[mutating] void unlock();
};
struct IntCount : ILockable
{
[mutating] void lock() { count ++; }
[mutating] void unlock() { --count; }
int count = 0;
};
int doThing(inout ILockable lockable)
{
lockable.lock();
// do something...
lockable.unlock();
return 0;
}
[numthreads(4, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
int index = dispatchThreadID.x;
IntCount count;
doThing(count);
outputBuffer[dispatchThreadID.x] = count.count;
}
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