summaryrefslogtreecommitdiffstats
path: root/src/shader_recompiler/backend/spirv/emit_context.cpp
blob: 3b3fea50cc164823178da2fa32ea6e407a9ac3be (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#include <algorithm>
#include <array>
#include <string_view>

#include <fmt/format.h>

#include "common/common_types.h"
#include "common/div_ceil.h"
#include "shader_recompiler/backend/spirv/emit_context.h"

namespace Shader::Backend::SPIRV {
namespace {
Id ImageType(EmitContext& ctx, const TextureDescriptor& desc) {
    const spv::ImageFormat format{spv::ImageFormat::Unknown};
    const Id type{ctx.F32[1]};
    switch (desc.type) {
    case TextureType::Color1D:
        return ctx.TypeImage(type, spv::Dim::Dim1D, false, false, false, 1, format);
    case TextureType::ColorArray1D:
        return ctx.TypeImage(type, spv::Dim::Dim1D, false, true, false, 1, format);
    case TextureType::Color2D:
        return ctx.TypeImage(type, spv::Dim::Dim2D, false, false, false, 1, format);
    case TextureType::ColorArray2D:
        return ctx.TypeImage(type, spv::Dim::Dim2D, false, true, false, 1, format);
    case TextureType::Color3D:
        return ctx.TypeImage(type, spv::Dim::Dim3D, false, false, false, 1, format);
    case TextureType::ColorCube:
        return ctx.TypeImage(type, spv::Dim::Cube, false, false, false, 1, format);
    case TextureType::ColorArrayCube:
        return ctx.TypeImage(type, spv::Dim::Cube, false, true, false, 1, format);
    case TextureType::Shadow1D:
        return ctx.TypeImage(type, spv::Dim::Dim1D, true, false, false, 1, format);
    case TextureType::ShadowArray1D:
        return ctx.TypeImage(type, spv::Dim::Dim1D, true, true, false, 1, format);
    case TextureType::Shadow2D:
        return ctx.TypeImage(type, spv::Dim::Dim2D, true, false, false, 1, format);
    case TextureType::ShadowArray2D:
        return ctx.TypeImage(type, spv::Dim::Dim2D, true, true, false, 1, format);
    case TextureType::Shadow3D:
        return ctx.TypeImage(type, spv::Dim::Dim3D, true, false, false, 1, format);
    case TextureType::ShadowCube:
        return ctx.TypeImage(type, spv::Dim::Cube, true, false, false, 1, format);
    case TextureType::ShadowArrayCube:
        return ctx.TypeImage(type, spv::Dim::Cube, false, true, false, 1, format);
    }
    throw InvalidArgument("Invalid texture type {}", desc.type);
}

Id DefineVariable(EmitContext& ctx, Id type, std::optional<spv::BuiltIn> builtin,
                  spv::StorageClass storage_class) {
    const Id pointer_type{ctx.TypePointer(storage_class, type)};
    const Id id{ctx.AddGlobalVariable(pointer_type, storage_class)};
    if (builtin) {
        ctx.Decorate(id, spv::Decoration::BuiltIn, *builtin);
    }
    ctx.interfaces.push_back(id);
    return id;
}

Id DefineInput(EmitContext& ctx, Id type, std::optional<spv::BuiltIn> builtin = std::nullopt) {
    return DefineVariable(ctx, type, builtin, spv::StorageClass::Input);
}

Id DefineOutput(EmitContext& ctx, Id type, std::optional<spv::BuiltIn> builtin = std::nullopt) {
    return DefineVariable(ctx, type, builtin, spv::StorageClass::Output);
}

Id GetAttributeType(EmitContext& ctx, AttributeType type) {
    switch (type) {
    case AttributeType::Float:
        return ctx.F32[4];
    case AttributeType::SignedInt:
        return ctx.TypeVector(ctx.TypeInt(32, true), 4);
    case AttributeType::UnsignedInt:
        return ctx.U32[4];
    case AttributeType::Disabled:
        break;
    }
    throw InvalidArgument("Invalid attribute type {}", type);
}
} // Anonymous namespace

void VectorTypes::Define(Sirit::Module& sirit_ctx, Id base_type, std::string_view name) {
    defs[0] = sirit_ctx.Name(base_type, name);

    std::array<char, 6> def_name;
    for (int i = 1; i < 4; ++i) {
        const std::string_view def_name_view(
            def_name.data(),
            fmt::format_to_n(def_name.data(), def_name.size(), "{}x{}", name, i + 1).size);
        defs[i] = sirit_ctx.Name(sirit_ctx.TypeVector(base_type, i + 1), def_name_view);
    }
}

EmitContext::EmitContext(const Profile& profile_, IR::Program& program, u32& binding)
    : Sirit::Module(profile_.supported_spirv), profile{profile_}, stage{program.stage} {
    AddCapability(spv::Capability::Shader);
    DefineCommonTypes(program.info);
    DefineCommonConstants();
    DefineInterfaces(program.info);
    DefineLocalMemory(program);
    DefineSharedMemory(program);
    DefineConstantBuffers(program.info, binding);
    DefineStorageBuffers(program.info, binding);
    DefineTextures(program.info, binding);
    DefineLabels(program);
}

EmitContext::~EmitContext() = default;

Id EmitContext::Def(const IR::Value& value) {
    if (!value.IsImmediate()) {
        return value.InstRecursive()->Definition<Id>();
    }
    switch (value.Type()) {
    case IR::Type::Void:
        // Void instructions are used for optional arguments (e.g. texture offsets)
        // They are not meant to be used in the SPIR-V module
        return Id{};
    case IR::Type::U1:
        return value.U1() ? true_value : false_value;
    case IR::Type::U32:
        return Constant(U32[1], value.U32());
    case IR::Type::U64:
        return Constant(U64, value.U64());
    case IR::Type::F32:
        return Constant(F32[1], value.F32());
    case IR::Type::F64:
        return Constant(F64[1], value.F64());
    case IR::Type::Label:
        return value.Label()->Definition<Id>();
    default:
        throw NotImplementedException("Immediate type {}", value.Type());
    }
}

void EmitContext::DefineCommonTypes(const Info& info) {
    void_id = TypeVoid();

    U1 = Name(TypeBool(), "u1");

    F32.Define(*this, TypeFloat(32), "f32");
    U32.Define(*this, TypeInt(32, false), "u32");

    private_u32 = Name(TypePointer(spv::StorageClass::Private, U32[1]), "private_u32");

    input_f32 = Name(TypePointer(spv::StorageClass::Input, F32[1]), "input_f32");
    input_u32 = Name(TypePointer(spv::StorageClass::Input, U32[1]), "input_u32");
    input_s32 = Name(TypePointer(spv::StorageClass::Input, TypeInt(32, true)), "input_s32");

    output_f32 = Name(TypePointer(spv::StorageClass::Output, F32[1]), "output_f32");

    if (info.uses_int8) {
        AddCapability(spv::Capability::Int8);
        U8 = Name(TypeInt(8, false), "u8");
        S8 = Name(TypeInt(8, true), "s8");
    }
    if (info.uses_int16) {
        AddCapability(spv::Capability::Int16);
        U16 = Name(TypeInt(16, false), "u16");
        S16 = Name(TypeInt(16, true), "s16");
    }
    if (info.uses_int64) {
        AddCapability(spv::Capability::Int64);
        U64 = Name(TypeInt(64, false), "u64");
    }
    if (info.uses_fp16) {
        AddCapability(spv::Capability::Float16);
        F16.Define(*this, TypeFloat(16), "f16");
    }
    if (info.uses_fp64) {
        AddCapability(spv::Capability::Float64);
        F64.Define(*this, TypeFloat(64), "f64");
    }
}

void EmitContext::DefineCommonConstants() {
    true_value = ConstantTrue(U1);
    false_value = ConstantFalse(U1);
    u32_zero_value = Constant(U32[1], 0U);
    f32_zero_value = Constant(F32[1], 0.0f);
}

void EmitContext::DefineInterfaces(const Info& info) {
    DefineInputs(info);
    DefineOutputs(info);
}

void EmitContext::DefineLocalMemory(const IR::Program& program) {
    if (program.local_memory_size == 0) {
        return;
    }
    const u32 num_elements{Common::DivCeil(program.local_memory_size, 4U)};
    const Id type{TypeArray(U32[1], Constant(U32[1], num_elements))};
    const Id pointer{TypePointer(spv::StorageClass::Private, type)};
    local_memory = AddGlobalVariable(pointer, spv::StorageClass::Private);
    if (profile.supported_spirv >= 0x00010400) {
        interfaces.push_back(local_memory);
    }
}

void EmitContext::DefineSharedMemory(const IR::Program& program) {
    if (program.shared_memory_size == 0) {
        return;
    }
    const auto make{[&](Id element_type, u32 element_size) {
        const u32 num_elements{Common::DivCeil(program.shared_memory_size, element_size)};
        const Id array_type{TypeArray(element_type, Constant(U32[1], num_elements))};
        Decorate(array_type, spv::Decoration::ArrayStride, element_size);

        const Id struct_type{TypeStruct(array_type)};
        MemberDecorate(struct_type, 0U, spv::Decoration::Offset, 0U);
        Decorate(struct_type, spv::Decoration::Block);

        const Id pointer{TypePointer(spv::StorageClass::Workgroup, struct_type)};
        const Id element_pointer{TypePointer(spv::StorageClass::Workgroup, element_type)};
        const Id variable{AddGlobalVariable(pointer, spv::StorageClass::Workgroup)};
        Decorate(variable, spv::Decoration::Aliased);
        interfaces.push_back(variable);

        return std::make_pair(variable, element_pointer);
    }};
    if (profile.support_explicit_workgroup_layout) {
        AddExtension("SPV_KHR_workgroup_memory_explicit_layout");
        AddCapability(spv::Capability::WorkgroupMemoryExplicitLayoutKHR);
        if (program.info.uses_int8) {
            AddCapability(spv::Capability::WorkgroupMemoryExplicitLayout8BitAccessKHR);
            std::tie(shared_memory_u8, shared_u8) = make(U8, 1);
        }
        if (program.info.uses_int16) {
            AddCapability(spv::Capability::WorkgroupMemoryExplicitLayout16BitAccessKHR);
            std::tie(shared_memory_u16, shared_u16) = make(U16, 2);
        }
        std::tie(shared_memory_u32, shared_u32) = make(U32[1], 4);
        std::tie(shared_memory_u32x2, shared_u32x2) = make(U32[2], 8);
        std::tie(shared_memory_u32x4, shared_u32x4) = make(U32[4], 16);
    }
    const u32 num_elements{Common::DivCeil(program.shared_memory_size, 4U)};
    const Id type{TypeArray(U32[1], Constant(U32[1], num_elements))};
    const Id pointer_type{TypePointer(spv::StorageClass::Workgroup, type)};
    shared_u32 = TypePointer(spv::StorageClass::Workgroup, U32[1]);
    shared_memory_u32 = AddGlobalVariable(pointer_type, spv::StorageClass::Workgroup);
    interfaces.push_back(shared_memory_u32);

    const Id func_type{TypeFunction(void_id, U32[1], U32[1])};
    const auto make_function{[&](u32 mask, u32 size) {
        const Id loop_header{OpLabel()};
        const Id continue_block{OpLabel()};
        const Id merge_block{OpLabel()};

        const Id func{OpFunction(void_id, spv::FunctionControlMask::MaskNone, func_type)};
        const Id offset{OpFunctionParameter(U32[1])};
        const Id insert_value{OpFunctionParameter(U32[1])};
        AddLabel();
        OpBranch(loop_header);

        AddLabel(loop_header);
        const Id word_offset{OpShiftRightArithmetic(U32[1], offset, Constant(U32[1], 2U))};
        const Id shift_offset{OpShiftLeftLogical(U32[1], offset, Constant(U32[1], 3U))};
        const Id bit_offset{OpBitwiseAnd(U32[1], shift_offset, Constant(U32[1], mask))};
        const Id count{Constant(U32[1], size)};
        OpLoopMerge(merge_block, continue_block, spv::LoopControlMask::MaskNone);
        OpBranch(continue_block);

        AddLabel(continue_block);
        const Id word_pointer{OpAccessChain(shared_u32, shared_memory_u32, word_offset)};
        const Id old_value{OpLoad(U32[1], word_pointer)};
        const Id new_value{OpBitFieldInsert(U32[1], old_value, insert_value, bit_offset, count)};
        const Id atomic_res{OpAtomicCompareExchange(U32[1], word_pointer, Constant(U32[1], 1U),
                                                    u32_zero_value, u32_zero_value, new_value,
                                                    old_value)};
        const Id success{OpIEqual(U1, atomic_res, old_value)};
        OpBranchConditional(success, merge_block, loop_header);

        AddLabel(merge_block);
        OpReturn();
        OpFunctionEnd();
        return func;
    }};
    if (program.info.uses_int8) {
        shared_store_u8_func = make_function(24, 8);
    }
    if (program.info.uses_int16) {
        shared_store_u16_func = make_function(16, 16);
    }
}

void EmitContext::DefineConstantBuffers(const Info& info, u32& binding) {
    if (info.constant_buffer_descriptors.empty()) {
        return;
    }
    if (True(info.used_constant_buffer_types & IR::Type::U8)) {
        DefineConstantBuffers(info, &UniformDefinitions::U8, binding, U8, 'u', sizeof(u8));
        DefineConstantBuffers(info, &UniformDefinitions::S8, binding, S8, 's', sizeof(s8));
    }
    if (True(info.used_constant_buffer_types & IR::Type::U16)) {
        DefineConstantBuffers(info, &UniformDefinitions::U16, binding, U16, 'u', sizeof(u16));
        DefineConstantBuffers(info, &UniformDefinitions::S16, binding, S16, 's', sizeof(s16));
    }
    if (True(info.used_constant_buffer_types & IR::Type::U32)) {
        DefineConstantBuffers(info, &UniformDefinitions::U32, binding, U32[1], 'u', sizeof(u32));
    }
    if (True(info.used_constant_buffer_types & IR::Type::F32)) {
        DefineConstantBuffers(info, &UniformDefinitions::F32, binding, F32[1], 'f', sizeof(f32));
    }
    if (True(info.used_constant_buffer_types & IR::Type::U64)) {
        DefineConstantBuffers(info, &UniformDefinitions::U64, binding, U64, 'u', sizeof(u64));
    }
    for (const ConstantBufferDescriptor& desc : info.constant_buffer_descriptors) {
        binding += desc.count;
    }
}

void EmitContext::DefineStorageBuffers(const Info& info, u32& binding) {
    if (info.storage_buffers_descriptors.empty()) {
        return;
    }
    AddExtension("SPV_KHR_storage_buffer_storage_class");

    const Id array_type{TypeRuntimeArray(U32[1])};
    Decorate(array_type, spv::Decoration::ArrayStride, 4U);

    const Id struct_type{TypeStruct(array_type)};
    Name(struct_type, "ssbo_block");
    Decorate(struct_type, spv::Decoration::Block);
    MemberName(struct_type, 0, "data");
    MemberDecorate(struct_type, 0, spv::Decoration::Offset, 0U);

    const Id storage_type{TypePointer(spv::StorageClass::StorageBuffer, struct_type)};
    storage_u32 = TypePointer(spv::StorageClass::StorageBuffer, U32[1]);

    u32 index{};
    for (const StorageBufferDescriptor& desc : info.storage_buffers_descriptors) {
        const Id id{AddGlobalVariable(storage_type, spv::StorageClass::StorageBuffer)};
        Decorate(id, spv::Decoration::Binding, binding);
        Decorate(id, spv::Decoration::DescriptorSet, 0U);
        Name(id, fmt::format("ssbo{}", index));
        if (profile.supported_spirv >= 0x00010400) {
            interfaces.push_back(id);
        }
        std::fill_n(ssbos.data() + index, desc.count, id);
        index += desc.count;
        binding += desc.count;
    }
}

void EmitContext::DefineTextures(const Info& info, u32& binding) {
    textures.reserve(info.texture_descriptors.size());
    for (const TextureDescriptor& desc : info.texture_descriptors) {
        if (desc.count != 1) {
            throw NotImplementedException("Array of textures");
        }
        const Id image_type{ImageType(*this, desc)};
        const Id sampled_type{TypeSampledImage(image_type)};
        const Id pointer_type{TypePointer(spv::StorageClass::UniformConstant, sampled_type)};
        const Id id{AddGlobalVariable(pointer_type, spv::StorageClass::UniformConstant)};
        Decorate(id, spv::Decoration::Binding, binding);
        Decorate(id, spv::Decoration::DescriptorSet, 0U);
        Name(id, fmt::format("tex{}_{:02x}", desc.cbuf_index, desc.cbuf_offset));
        for (u32 index = 0; index < desc.count; ++index) {
            // TODO: Pass count info
            textures.push_back(TextureDefinition{
                .id{id},
                .sampled_type{sampled_type},
                .image_type{image_type},
            });
        }
        if (profile.supported_spirv >= 0x00010400) {
            interfaces.push_back(id);
        }
        binding += desc.count;
    }
}

void EmitContext::DefineLabels(IR::Program& program) {
    for (IR::Block* const block : program.blocks) {
        block->SetDefinition(OpLabel());
    }
}

void EmitContext::DefineInputs(const Info& info) {
    if (info.uses_workgroup_id) {
        workgroup_id = DefineInput(*this, U32[3], spv::BuiltIn::WorkgroupId);
    }
    if (info.uses_local_invocation_id) {
        local_invocation_id = DefineInput(*this, U32[3], spv::BuiltIn::LocalInvocationId);
    }
    if (info.uses_subgroup_invocation_id ||
        (profile.warp_size_potentially_larger_than_guest && info.uses_subgroup_vote)) {
        subgroup_local_invocation_id =
            DefineInput(*this, U32[1], spv::BuiltIn::SubgroupLocalInvocationId);
    }
    if (info.uses_fswzadd) {
        const Id f32_one{Constant(F32[1], 1.0f)};
        const Id f32_minus_one{Constant(F32[1], -1.0f)};
        const Id f32_zero{Constant(F32[1], 0.0f)};
        fswzadd_lut_a = ConstantComposite(F32[4], f32_minus_one, f32_one, f32_minus_one, f32_zero);
        fswzadd_lut_b =
            ConstantComposite(F32[4], f32_minus_one, f32_minus_one, f32_one, f32_minus_one);
    }
    if (info.loads_position) {
        const bool is_fragment{stage != Stage::Fragment};
        const spv::BuiltIn built_in{is_fragment ? spv::BuiltIn::Position : spv::BuiltIn::FragCoord};
        input_position = DefineInput(*this, F32[4], built_in);
    }
    if (info.loads_instance_id) {
        if (profile.support_vertex_instance_id) {
            instance_id = DefineInput(*this, U32[1], spv::BuiltIn::InstanceId);
        } else {
            instance_index = DefineInput(*this, U32[1], spv::BuiltIn::InstanceIndex);
            base_instance = DefineInput(*this, U32[1], spv::BuiltIn::BaseInstance);
        }
    }
    if (info.loads_vertex_id) {
        if (profile.support_vertex_instance_id) {
            vertex_id = DefineInput(*this, U32[1], spv::BuiltIn::VertexId);
        } else {
            vertex_index = DefineInput(*this, U32[1], spv::BuiltIn::VertexIndex);
            base_vertex = DefineInput(*this, U32[1], spv::BuiltIn::BaseVertex);
        }
    }
    if (info.loads_front_face) {
        front_face = DefineInput(*this, U1, spv::BuiltIn::FrontFacing);
    }
    if (info.loads_point_coord) {
        point_coord = DefineInput(*this, F32[2], spv::BuiltIn::PointCoord);
    }
    for (size_t index = 0; index < info.input_generics.size(); ++index) {
        const InputVarying generic{info.input_generics[index]};
        if (!generic.used) {
            continue;
        }
        const AttributeType input_type{profile.generic_input_types[index]};
        if (input_type == AttributeType::Disabled) {
            continue;
        }
        const Id type{GetAttributeType(*this, input_type)};
        const Id id{DefineInput(*this, type)};
        Decorate(id, spv::Decoration::Location, static_cast<u32>(index));
        Name(id, fmt::format("in_attr{}", index));
        input_generics[index] = id;

        if (stage != Stage::Fragment) {
            continue;
        }
        switch (generic.interpolation) {
        case Interpolation::Smooth:
            // Default
            // Decorate(id, spv::Decoration::Smooth);
            break;
        case Interpolation::NoPerspective:
            Decorate(id, spv::Decoration::NoPerspective);
            break;
        case Interpolation::Flat:
            Decorate(id, spv::Decoration::Flat);
            break;
        }
    }
}

void EmitContext::DefineConstantBuffers(const Info& info, Id UniformDefinitions::*member_type,
                                        u32 binding, Id type, char type_char, u32 element_size) {
    const Id array_type{TypeArray(type, Constant(U32[1], 65536U / element_size))};
    Decorate(array_type, spv::Decoration::ArrayStride, element_size);

    const Id struct_type{TypeStruct(array_type)};
    Name(struct_type, fmt::format("cbuf_block_{}{}", type_char, element_size * CHAR_BIT));
    Decorate(struct_type, spv::Decoration::Block);
    MemberName(struct_type, 0, "data");
    MemberDecorate(struct_type, 0, spv::Decoration::Offset, 0U);

    const Id struct_pointer_type{TypePointer(spv::StorageClass::Uniform, struct_type)};
    const Id uniform_type{TypePointer(spv::StorageClass::Uniform, type)};
    uniform_types.*member_type = uniform_type;

    for (const ConstantBufferDescriptor& desc : info.constant_buffer_descriptors) {
        const Id id{AddGlobalVariable(struct_pointer_type, spv::StorageClass::Uniform)};
        Decorate(id, spv::Decoration::Binding, binding);
        Decorate(id, spv::Decoration::DescriptorSet, 0U);
        Name(id, fmt::format("c{}", desc.index));
        for (size_t i = 0; i < desc.count; ++i) {
            cbufs[desc.index + i].*member_type = id;
        }
        if (profile.supported_spirv >= 0x00010400) {
            interfaces.push_back(id);
        }
        binding += desc.count;
    }
}

void EmitContext::DefineOutputs(const Info& info) {
    if (info.stores_position || stage == Stage::VertexB) {
        output_position = DefineOutput(*this, F32[4], spv::BuiltIn::Position);
    }
    if (info.stores_point_size || profile.fixed_state_point_size) {
        if (stage == Stage::Fragment) {
            throw NotImplementedException("Storing PointSize in Fragment stage");
        }
        output_point_size = DefineOutput(*this, F32[1], spv::BuiltIn::PointSize);
    }
    if (info.stores_clip_distance) {
        if (stage == Stage::Fragment) {
            throw NotImplementedException("Storing PointSize in Fragment stage");
        }
        const Id type{TypeArray(F32[1], Constant(U32[1], 8U))};
        clip_distances = DefineOutput(*this, type, spv::BuiltIn::ClipDistance);
    }
    for (size_t i = 0; i < info.stores_generics.size(); ++i) {
        if (info.stores_generics[i]) {
            output_generics[i] = DefineOutput(*this, F32[4]);
            Decorate(output_generics[i], spv::Decoration::Location, static_cast<u32>(i));
            Name(output_generics[i], fmt::format("out_attr{}", i));
        }
    }
    if (stage == Stage::Fragment) {
        for (u32 index = 0; index < 8; ++index) {
            if (!info.stores_frag_color[index]) {
                continue;
            }
            frag_color[index] = DefineOutput(*this, F32[4]);
            Decorate(frag_color[index], spv::Decoration::Location, index);
            Name(frag_color[index], fmt::format("frag_color{}", index));
        }
        if (info.stores_frag_depth) {
            frag_depth = DefineOutput(*this, F32[1]);
            Decorate(frag_depth, spv::Decoration::BuiltIn, spv::BuiltIn::FragDepth);
            Name(frag_depth, "frag_depth");
        }
    }
}

} // namespace Shader::Backend::SPIRV