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
799 B
GLSL
35 lines
799 B
GLSL
#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct Foobar
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{
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float a;
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float b;
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};
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constant float4 _37[3] = { float4(1.0), float4(2.0), float4(3.0) };
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constant float4 _49[2] = { float4(1.0), float4(2.0) };
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constant float4 _54[2] = { float4(8.0), float4(10.0) };
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constant float4 _55[2][2] = { { float4(1.0), float4(2.0) }, { float4(8.0), float4(10.0) } };
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constant Foobar _75[2] = { Foobar{ 10.0, 40.0 }, Foobar{ 90.0, 70.0 } };
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struct main0_out
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{
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float4 FragColor [[color(0)]];
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};
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struct main0_in
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{
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int index [[user(locn0)]];
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};
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fragment main0_out main0(main0_in in [[stage_in]])
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{
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main0_out out = {};
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out.FragColor = ((_37[in.index] + _55[in.index][in.index + 1]) + float4(30.0)) + float4(_75[in.index].a + _75[in.index].b);
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return out;
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}
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