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// interface-extension.slang
// Test that an `extension` applied to an interface type works as users expect
//TEST(compute):COMPARE_COMPUTE: -shaderobj
//TEST(compute):COMPARE_COMPUTE: -vk -shaderobj
interface ICounter
{
[mutating] void add(int value);
}
struct MyCounter : ICounter
{
int _state = 0;
[mutating] void add(int value) { _state += value; }
}
__generic<T : ICounter>
extension T
{
[mutating] void increment()
{
this.add(1);
}
}
void helper<T : ICounter>(in out T counter)
{
counter.increment();
}
int test(int value)
{
MyCounter counter = { value };
counter.increment();
helper(counter);
return counter._state;
}
//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<int> outputBuffer;
[numthreads(4, 1, 1)]
void computeMain(int3 dispatchThreadID : SV_DispatchThreadID)
{
int tid = dispatchThreadID.x;
int inVal = tid;
int outVal = test(inVal);
outputBuffer[tid] = outVal;
}
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