Re-implement get unused location
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		@@ -6,7 +6,6 @@
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#include <array>
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#include <climits>
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#include <string_view>
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#include <queue>
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#include <fmt/format.h>
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@@ -430,6 +429,16 @@ Id DescType(EmitContext& ctx, Id sampled_type, Id pointer_type, u32 count) {
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}
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constexpr size_t NUM_FIXEDFNCTEXTURE = 10;
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size_t FindFistUnUsedLocation(const auto& used_location) {
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    if (used_location.all()) {
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        throw RuntimeError("Unable to get an unused location");
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    }
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    size_t location = 0;
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    while (location < used_location.size() && used_location.test(location))
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        ++location;
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    return location;
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}
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} // Anonymous namespace
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void VectorTypes::Define(Sirit::Module& sirit_ctx, Id base_type, std::string_view name) {
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@@ -1230,15 +1239,19 @@ void EmitContext::DefineInputs(const IR::Program& program) {
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        loads[IR::Attribute::TessellationEvaluationPointV]) {
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        tess_coord = DefineInput(*this, F32[3], false, spv::BuiltIn::TessCoord);
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    }
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    std::queue<u32> ununsed_location;
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    std::bitset<IR::NUM_GENERICS> used_location;
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    for (size_t index = 0; index < IR::NUM_GENERICS; ++index) {
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        const AttributeType input_type{runtime_info.generic_input_types[index]};
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        if (!runtime_info.previous_stage_stores.Generic(index) || !loads.Generic(index) ||
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            input_type == AttributeType::Disabled) {
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            ununsed_location.push(static_cast<u32>(index));
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        if (!runtime_info.previous_stage_stores.Generic(index)) {
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            continue;
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        }
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        if (!loads.Generic(index)) {
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            continue;
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        }
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        if (input_type == AttributeType::Disabled) {
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            continue;
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        }
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        used_location.set(index);
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        const Id type{GetAttributeType(*this, input_type)};
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        const Id id{DefineInput(*this, type, true)};
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        Decorate(id, spv::Decoration::Location, static_cast<u32>(index));
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@@ -1265,22 +1278,16 @@ void EmitContext::DefineInputs(const IR::Program& program) {
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        }
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    }
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    if (loads.AnyComponent(IR::Attribute::ColorFrontDiffuseR)) {
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        if (ununsed_location.empty()) {
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            throw RuntimeError("Unable to get an unused location");
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        }
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        u32 location = ununsed_location.front();
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        ununsed_location.pop();
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        size_t location = FindFistUnUsedLocation(used_location);
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        used_location.set(location);
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        const Id id{DefineInput(*this, F32[4], true)};
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        Decorate(id, spv::Decoration::Location, location);
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        input_front_color = id;
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    }
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    for (size_t index = 0; index < NUM_FIXEDFNCTEXTURE; ++index) {
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        if (loads.AnyComponent(IR::Attribute::FixedFncTexture0S + index * 4)) {
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            if (ununsed_location.empty()) {
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                throw RuntimeError("Unable to get an unused location");
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            }
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            u32 location = ununsed_location.front();
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            ununsed_location.pop();
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            size_t location = FindFistUnUsedLocation(used_location);
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            used_location.set(location);
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            const Id id{DefineInput(*this, F32[4], true)};
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            Decorate(id, spv::Decoration::Location, location);
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            input_fixed_fnc_textures[index] = id;
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@@ -1336,31 +1343,24 @@ void EmitContext::DefineOutputs(const IR::Program& program) {
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        viewport_mask = DefineOutput(*this, TypeArray(U32[1], Const(1u)), std::nullopt,
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                                     spv::BuiltIn::ViewportMaskNV);
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    }
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    std::queue<u32> ununsed_location;
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    std::bitset<IR::NUM_GENERICS> used_location;
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    for (size_t index = 0; index < IR::NUM_GENERICS; ++index) {
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        if (info.stores.Generic(index)) {
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            DefineGenericOutput(*this, index, invocations);
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        } else {
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            ununsed_location.push(static_cast<u32>(index));
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            used_location.set(index);
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        }
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    }
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    if (info.stores.AnyComponent(IR::Attribute::ColorFrontDiffuseR)) {
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        if (ununsed_location.empty()) {
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            throw RuntimeError("Unable to get an unused location");
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        }
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        u32 location = ununsed_location.front();
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        ununsed_location.pop();
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        size_t location = FindFistUnUsedLocation(used_location);
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        used_location.set(location);
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        const Id id{DefineOutput(*this, F32[4], invocations)};
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        Decorate(id, spv::Decoration::Location, location);
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        Decorate(id, spv::Decoration::Location, static_cast<u32>(location));
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        output_front_color = id;
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    }
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    for (size_t index = 0; index < NUM_FIXEDFNCTEXTURE; ++index) {
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        if (info.stores.AnyComponent(IR::Attribute::FixedFncTexture0S + index * 4)) {
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            if (ununsed_location.empty()) {
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                throw RuntimeError("Unable to get an unused location");
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            }
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            u32 location = ununsed_location.front();
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            ununsed_location.pop();
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            size_t location = FindFistUnUsedLocation(used_location);
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            used_location.set(location);
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            const Id id{DefineOutput(*this, F32[4], invocations)};
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            Decorate(id, spv::Decoration::Location, location);
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            output_fixed_fnc_textures[index] = id;
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