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.
22 lines
467 B
Plaintext
22 lines
467 B
Plaintext
#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct SSBO
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{
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float a;
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};
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constant uint _5_tmp [[function_constant(10)]];
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constant uint _5 = is_function_constant_defined(_5_tmp) ? _5_tmp : 9u;
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constant uint _6_tmp [[function_constant(12)]];
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constant uint _6 = is_function_constant_defined(_6_tmp) ? _6_tmp : 4u;
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constant uint3 gl_WorkGroupSize = uint3(_5, 20u, _6);
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kernel void main0(device SSBO& _4 [[buffer(0)]])
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{
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_4.a += 1.0;
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}
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