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				https://git.suyu.dev/suyu/suyu
				synced 2025-11-04 00:49:02 -06:00 
			
		
		
		
	Support gl_FogFragCoord attribute
This commit is contained in:
		@@ -430,10 +430,12 @@ Id DescType(EmitContext& ctx, Id sampled_type, Id pointer_type, u32 count) {
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    }
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}
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size_t FindNextUnusedLocation(const std::bitset<IR::NUM_GENERICS>& used_locations,
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                              size_t start_offset) {
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size_t FindAndSetNextUnusedLocation(std::bitset<IR::NUM_GENERICS>& used_locations,
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                                    size_t& start_offset) {
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    for (size_t location = start_offset; location < used_locations.size(); ++location) {
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        if (!used_locations.test(location)) {
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            start_offset = location;
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            used_locations.set(location);
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            return location;
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        }
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    }
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@@ -1279,45 +1281,40 @@ void EmitContext::DefineInputs(const IR::Program& program) {
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    }
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    size_t previous_unused_location = 0;
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    if (loads.AnyComponent(IR::Attribute::ColorFrontDiffuseR)) {
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        const size_t location = FindNextUnusedLocation(used_locations, previous_unused_location);
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        previous_unused_location = location;
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        used_locations.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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        Decorate(id, spv::Decoration::Location,
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                 FindAndSetNextUnusedLocation(used_locations, previous_unused_location));
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        input_front_color = id;
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    }
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    if (loads.AnyComponent(IR::Attribute::ColorFrontSpecularR)) {
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        const size_t location = FindNextUnusedLocation(used_locations, previous_unused_location);
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        previous_unused_location = location;
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        used_locations.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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        Decorate(id, spv::Decoration::Location,
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                 FindAndSetNextUnusedLocation(used_locations, previous_unused_location));
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        input_front_secondary_color = id;
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    }
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    if (loads.AnyComponent(IR::Attribute::ColorBackDiffuseR)) {
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        const size_t location = FindNextUnusedLocation(used_locations, previous_unused_location);
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        previous_unused_location = location;
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        used_locations.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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        Decorate(id, spv::Decoration::Location,
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                 FindAndSetNextUnusedLocation(used_locations, previous_unused_location));
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        input_back_color = id;
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    }
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    if (loads.AnyComponent(IR::Attribute::ColorBackSpecularR)) {
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        const size_t location = FindNextUnusedLocation(used_locations, previous_unused_location);
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        previous_unused_location = location;
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        used_locations.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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        Decorate(id, spv::Decoration::Location,
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                 FindAndSetNextUnusedLocation(used_locations, previous_unused_location));
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        input_back_secondary_color = id;
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    }
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    if (loads.AnyComponent(IR::Attribute::FogCoordinate)) {
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        const Id id{DefineInput(*this, F32[4], true)};
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        Decorate(id, spv::Decoration::Location,
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                 FindAndSetNextUnusedLocation(used_locations, previous_unused_location));
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        input_fog_frag_coord = 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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            const size_t location =
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                FindNextUnusedLocation(used_locations, previous_unused_location);
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            previous_unused_location = location;
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            used_locations.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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            Decorate(id, spv::Decoration::Location,
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                     FindAndSetNextUnusedLocation(used_locations, previous_unused_location));
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            input_fixed_fnc_textures[index] = id;
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        }
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    }
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@@ -1380,45 +1377,45 @@ void EmitContext::DefineOutputs(const IR::Program& program) {
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    }
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    size_t previous_unused_location = 0;
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    if (info.stores.AnyComponent(IR::Attribute::ColorFrontDiffuseR)) {
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        const size_t location = FindNextUnusedLocation(used_locations, previous_unused_location);
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        previous_unused_location = location;
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        used_locations.set(location);
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        const Id id{DefineOutput(*this, F32[4], invocations)};
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        Decorate(id, spv::Decoration::Location, static_cast<u32>(location));
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        Decorate(id, spv::Decoration::Location,
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                 static_cast<u32>(
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                     FindAndSetNextUnusedLocation(used_locations, previous_unused_location)));
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        output_front_color = id;
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    }
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    if (info.stores.AnyComponent(IR::Attribute::ColorFrontSpecularR)) {
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        const size_t location = FindNextUnusedLocation(used_locations, previous_unused_location);
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        previous_unused_location = location;
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        used_locations.set(location);
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        const Id id{DefineOutput(*this, F32[4], invocations)};
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        Decorate(id, spv::Decoration::Location, static_cast<u32>(location));
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        Decorate(id, spv::Decoration::Location,
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                 static_cast<u32>(
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                     FindAndSetNextUnusedLocation(used_locations, previous_unused_location)));
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        output_front_secondary_color = id;
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    }
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    if (info.stores.AnyComponent(IR::Attribute::ColorBackDiffuseR)) {
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        const size_t location = FindNextUnusedLocation(used_locations, previous_unused_location);
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        previous_unused_location = location;
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        used_locations.set(location);
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        const Id id{DefineOutput(*this, F32[4], invocations)};
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        Decorate(id, spv::Decoration::Location, static_cast<u32>(location));
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        Decorate(id, spv::Decoration::Location,
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                 static_cast<u32>(
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                     FindAndSetNextUnusedLocation(used_locations, previous_unused_location)));
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        output_back_color = id;
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    }
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    if (info.stores.AnyComponent(IR::Attribute::ColorBackSpecularR)) {
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        const size_t location = FindNextUnusedLocation(used_locations, previous_unused_location);
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        previous_unused_location = location;
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        used_locations.set(location);
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        const Id id{DefineOutput(*this, F32[4], invocations)};
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        Decorate(id, spv::Decoration::Location, static_cast<u32>(location));
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        Decorate(id, spv::Decoration::Location,
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                 static_cast<u32>(
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                     FindAndSetNextUnusedLocation(used_locations, previous_unused_location)));
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        output_back_secondary_color = id;
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    }
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    if (info.stores.AnyComponent(IR::Attribute::FogCoordinate)) {
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        const Id id{DefineOutput(*this, F32[4], invocations)};
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        Decorate(id, spv::Decoration::Location,
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                 static_cast<u32>(
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                     FindAndSetNextUnusedLocation(used_locations, previous_unused_location)));
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        output_fog_frag_coord = 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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            const size_t location =
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                FindNextUnusedLocation(used_locations, previous_unused_location);
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            previous_unused_location = location;
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            used_locations.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,
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                     FindAndSetNextUnusedLocation(used_locations, previous_unused_location));
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            output_fixed_fnc_textures[index] = id;
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        }
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    }
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@@ -272,6 +272,7 @@ public:
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    Id input_front_secondary_color{};
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    Id input_back_color{};
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    Id input_back_secondary_color{};
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    Id input_fog_frag_coord{};
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    std::array<Id, 10> input_fixed_fnc_textures{};
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    std::array<Id, 32> input_generics{};
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@@ -281,6 +282,7 @@ public:
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    Id output_front_secondary_color{};
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    Id output_back_color{};
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    Id output_back_secondary_color{};
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    Id output_fog_frag_coord{};
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    std::array<Id, 10> output_fixed_fnc_textures{};
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    std::array<std::array<GenericElementInfo, 4>, 32> output_generics{};
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@@ -143,6 +143,11 @@ std::optional<OutAttr> OutputAttrPointer(EmitContext& ctx, IR::Attribute attr) {
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        const Id element_id{ctx.Const(element)};
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        return OutputAccessChain(ctx, ctx.output_f32, ctx.output_back_secondary_color, element_id);
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    }
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    case IR::Attribute::FogCoordinate: {
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        const u32 element{static_cast<u32>(attr) % 4};
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        const Id element_id{ctx.Const(element)};
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        return OutputAccessChain(ctx, ctx.output_f32, ctx.output_fog_frag_coord, element_id);
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    }
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    case IR::Attribute::ClipDistance0:
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    case IR::Attribute::ClipDistance1:
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    case IR::Attribute::ClipDistance2:
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@@ -391,8 +396,9 @@ Id EmitGetAttribute(EmitContext& ctx, IR::Attribute attr, Id vertex) {
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    case IR::Attribute::ColorFrontSpecularG:
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    case IR::Attribute::ColorFrontSpecularB:
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    case IR::Attribute::ColorFrontSpecularA: {
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        return ctx.OpLoad(ctx.F32[1], AttrPointer(ctx, ctx.input_f32, vertex, ctx.input_front_secondary_color,
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                                                  ctx.Const(element)));
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        return ctx.OpLoad(ctx.F32[1],
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                          AttrPointer(ctx, ctx.input_f32, vertex, ctx.input_front_secondary_color,
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                                      ctx.Const(element)));
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    }
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    case IR::Attribute::ColorBackDiffuseR:
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    case IR::Attribute::ColorBackDiffuseG:
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@@ -405,8 +411,13 @@ Id EmitGetAttribute(EmitContext& ctx, IR::Attribute attr, Id vertex) {
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    case IR::Attribute::ColorBackSpecularG:
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    case IR::Attribute::ColorBackSpecularB:
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    case IR::Attribute::ColorBackSpecularA: {
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        return ctx.OpLoad(ctx.F32[1], AttrPointer(ctx, ctx.input_f32, vertex, ctx.input_back_secondary_color,
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                                                  ctx.Const(element)));
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        return ctx.OpLoad(ctx.F32[1],
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                          AttrPointer(ctx, ctx.input_f32, vertex, ctx.input_back_secondary_color,
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                                      ctx.Const(element)));
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    }
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    case IR::Attribute::FogCoordinate: {
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        return ctx.OpLoad(ctx.F32[1], AttrPointer(ctx, ctx.input_f32, vertex,
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                                                  ctx.input_fog_frag_coord, ctx.Const(element)));
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    }
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    case IR::Attribute::InstanceId:
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        if (ctx.profile.support_vertex_instance_id) {
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