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//TEST:SIMPLE(filecheck=CHECK): -target spirv
//TEST(compute, vulkan):COMPARE_COMPUTE(filecheck-buffer=BUF):-vk -output-using-type -emit-spirv-directly
// CHECK: %[[C0:[0-9A-Za-z_]+]] = OpConstant %int 32
// CHECK: %[[C1:[0-9A-Za-z_]+]] = OpSpecConstant %int 2
// CHECK: %[[COP0:[0-9A-Za-z_]+]] = OpSpecConstantOp %int SDiv %[[C0]] %[[C1]]
// CHECK: %[[ARR_TYPE:[0-9A-Za-z_]+]] = OpTypeArray %float %[[COP0]]
// CHECK: %[[PT_TYPE:[0-9A-Za-z_]+]] = OpTypePointer Function %[[ARR_TYPE]]
static const int constValue0 = 32;
[SpecializationConstant]
const int constValue1 = 2;
//TEST_INPUT:ubuffer(data=[0], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
void func(out float buffer[constValue0 / constValue1])
{
for (uint i = 0; i < constValue0 / constValue1; i++)
{
buffer[i] = i;
}
}
struct MyStruct<let N: int>
{
float buffer[N / constValue1];
}
[shader("compute")]
[numthreads(1, 1, 1)]
void computeMain()
{
// This test checks we can use spec constants for array sizes.
MyStruct<constValue0> s;
func(s.buffer);
float temp = 0.0f;
for (uint i = 0; i < constValue0 / constValue1; i++)
{
temp += s.buffer[i] * 2;
}
// Result will be (0 + localConst-1) * localConst = 15 * 16 = 240
outputBuffer[0] = temp;
// BUF: 240
}
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