spirv: Initial bindings support

src/shader_recompiler/backend/spirv/emit_context.h

@@ -0,0 +1,67 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <string_view>
+
+#include <sirit/sirit.h>
+
+#include "shader_recompiler/frontend/ir/program.h"
+#include "shader_recompiler/shader_info.h"
+
+namespace Shader::Backend::SPIRV {
+
+using Sirit::Id;
+
+class VectorTypes {
+public:
+    void Define(Sirit::Module& sirit_ctx, Id base_type, std::string_view name);
+
+    [[nodiscard]] Id operator[](size_t size) const noexcept {
+        return defs[size - 1];
+    }
+
+private:
+    std::array<Id, 4> defs{};
+};
+
+class EmitContext final : public Sirit::Module {
+public:
+    explicit EmitContext(IR::Program& program);
+    ~EmitContext();
+
+    [[nodiscard]] Id Def(const IR::Value& value);
+
+    Id void_id{};
+    Id U1{};
+    VectorTypes F32;
+    VectorTypes U32;
+    VectorTypes F16;
+    VectorTypes F64;
+
+    Id true_value{};
+    Id false_value{};
+    Id u32_zero_value{};
+
+    Id uniform_u32{};
+    Id storage_u32{};
+
+    std::array<Id, Info::MAX_CBUFS> cbufs{};
+    std::array<Id, Info::MAX_SSBOS> ssbos{};
+
+    Id workgroup_id{};
+    Id local_invocation_id{};
+
+private:
+    void DefineCommonTypes(const Info& info);
+    void DefineCommonConstants();
+    void DefineSpecialVariables(const Info& info);
+    void DefineConstantBuffers(const Info& info);
+    void DefineStorageBuffers(const Info& info);
+    void DefineLabels(IR::Program& program);
+};
+
+} // namespace Shader::Backend::SPIRV