d92de00cc1
This is a fairly fundamental change on how IDs are handled.
It serves many purposes:
- Improve performance. We only need to iterate over IDs which are
relevant at any one time.
- Makes sure we iterate through IDs in SPIR-V module declaration order
rather than ID space. IDs don't have to be monotonically increasing,
which was an assumption SPIRV-Cross used to have. It has apparently
never been a problem until now.
- Support LUTs of structs. We do this by interleaving declaration of
constants and struct types in SPIR-V module order.
To support this, the ParsedIR interface needed to change slightly.
Before setting any ID with variant_set<T> we let ParsedIR know
that an ID with a specific type has been added. The surface for change
should be minimal.
ParsedIR will maintain a per-type list of IDs which the cross-compiler
will need to consider for later.
Instead of looping over ir.ids[] (which can be extremely large), we loop
over types now, using:
ir.for_each_typed_id<SPIRVariable>([&](uint32_t id, SPIRVariable &var) {
handle_variable(var);
});
Now we make sure that we're never looking at irrelevant types.
35 lines
898 B
Plaintext
35 lines
898 B
Plaintext
#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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#ifndef SPIRV_CROSS_CONSTANT_ID_1
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#define SPIRV_CROSS_CONSTANT_ID_1 2
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#endif
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constant int b = SPIRV_CROSS_CONSTANT_ID_1;
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constant int a_tmp [[function_constant(0)]];
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constant int a = is_function_constant_defined(a_tmp) ? a_tmp : 1;
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struct SSBO
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{
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int v[1];
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};
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constant uint _21 = (uint(a) + 0u);
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constant uint _22_tmp [[function_constant(10)]];
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constant uint _22 = is_function_constant_defined(_22_tmp) ? _22_tmp : 1u;
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constant uint3 gl_WorkGroupSize = uint3(_22, 20u, 1u);
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constant uint _27 = gl_WorkGroupSize.x;
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constant uint _28 = (_21 + _27);
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constant uint _29 = gl_WorkGroupSize.y;
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constant uint _30 = (_28 + _29);
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constant int _32 = (1 - a);
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kernel void main0(device SSBO& _17 [[buffer(0)]])
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{
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int spec_const_array_size[b];
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spec_const_array_size[a] = a;
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_17.v[_30] = b + spec_const_array_size[_32];
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}
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