[tools] add separate maxwell disassembler, ir dumper, and spirv translator (#3453)

why not?

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3453
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

tools/maxwell-spirv/CMakeLists.txt

@@ -0,0 +1,13 @@
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+# SPDX-License-Identifier: GPL-3.0-or-later
+add_executable(maxwell-spirv
+    main.cpp
+    spirv_recompiler_impl.cpp
+    spirv_reference_impl.cpp
+)
+target_link_libraries(maxwell-spirv PRIVATE common shader_recompiler Threads::Threads)
+target_include_directories(maxwell-spirv PRIVATE ${CMAKE_SOURCE_DIR}/src)
+if(UNIX AND NOT APPLE)
+    install(TARGETS maxwell-spirv)
+endif()
+create_target_directory_groups(maxwell-spirv)

tools/maxwell-spirv/main.cpp

@@ -0,0 +1,26 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+
+int SpirvReferenceImpl(int argc, char *argv[]);
+int SpirvShaderRecompilerImpl(int argc, char *argv[]);
+
+int main(int argc, char *argv[]) {
+    if (argc < 2) {
+        printf("usage: %s [input file]\n"
+            "Specify -n to use a recompiler that is NOT tied to the shader recompiler\n"
+            "aka. a reference recompiler\n"
+            "RAW SPIRV CODE WILL BE SENT TO STDOUT!\n", argv[0]);
+        return EXIT_FAILURE;
+    }
+    if (argc >= 3) {
+        if (::strcmp(argv[2], "-n") == 0
+        || ::strcmp(argv[2], "--new") == 0) {
+            return SpirvReferenceImpl(argc, argv);
+        }
+    }
+    return SpirvShaderRecompilerImpl(argc, argv);
+}

tools/maxwell-spirv/spirv_recompiler_impl.cpp

@@ -0,0 +1,67 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include <cstdlib>
+#include <sys/stat.h>
+#include "shader_recompiler/backend/spirv/emit_spirv.h"
+#include "shader_recompiler/environment.h"
+#include "shader_recompiler/frontend/maxwell/control_flow.h"
+#include "shader_recompiler/frontend/maxwell/translate_program.h"
+#include "shader_recompiler/host_translate_info.h"
+#include "shader_recompiler/object_pool.h"
+#include "shader_recompiler/profile.h"
+#include "shader_recompiler/runtime_info.h"
+
+#include "../maxwell-disas/file_environment.h"
+
+int SpirvShaderRecompilerImpl(int argc, char *argv[]) {
+    if (argc != 2) {
+        printf("usage: %s [input file] [-n]\n"
+            "RAW SPIRV CODE WILL BE SENT TO STDOUT!\n", argv[0]);
+        return EXIT_FAILURE;
+    }
+
+    size_t cfg_offset = 0;
+
+    Shader::ObjectPool<Shader::IR::Inst> inst_pool;
+    Shader::ObjectPool<Shader::IR::Block> block_pool;
+    Shader::ObjectPool<Shader::Maxwell::Flow::Block> cfg_blocks;
+    FileEnvironment env;
+
+    FILE *fp = fopen(argv[1], "rb");
+    if (fp != NULL) {
+        struct stat st;
+        fstat(fileno(fp), &st);
+        auto const words = (st.st_size / sizeof(u64));
+        env.code.resize(words + 1);
+        fread(env.code.data(), sizeof(u64), words, fp);
+        fclose(fp);
+    }
+
+    env.read_highest = env.read_lowest + env.code.size() * sizeof(u64);
+
+    Shader::Maxwell::Flow::CFG cfg(env, cfg_blocks, cfg_offset);
+
+    Shader::HostTranslateInfo host_info;
+    host_info.support_float64 = true;
+    host_info.support_float16 = true;
+    host_info.support_int64 = true;
+    host_info.needs_demote_reorder = true;
+    host_info.support_snorm_render_buffer = true;
+    host_info.support_viewport_index_layer = true;
+    host_info.support_geometry_shader_passthrough = true;
+    host_info.support_conditional_barrier = true;
+    host_info.min_ssbo_alignment = 0;
+    auto program = Shader::Maxwell::TranslateProgram(inst_pool, block_pool, env, cfg, host_info);
+
+    // IR::Program TranslateProgram(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Block>& block_pool,
+    //                              Environment& env, Flow::CFG& cfg, const HostTranslateInfo& host_info)
+    // std::vector<u32> EmitSPIRV(const Profile& profile, const RuntimeInfo& runtime_info,
+    //                            IR::Program& program, Bindings& bindings, bool optimize)
+    Shader::Profile profile{};
+    Shader::RuntimeInfo runtime_info;
+    auto const spirv_pgm = Shader::Backend::SPIRV::EmitSPIRV(profile, program, true);
+    fwrite(spirv_pgm.data(), sizeof(u64), spirv_pgm.size(), stdout);
+
+    return EXIT_SUCCESS;
+}

tools/maxwell-spirv/spirv_reference_impl.cpp

@@ -0,0 +1,15 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "common/bit_field.h"
+#include "common/common_types.h"
+#include "spirv/unified1/spirv.hpp11"
+#include <cassert>
+#include <cstdlib>
+#include <sirit/sirit.h>
+#include <sys/stat.h>
+
+int ReferenceImpl(int argc, char *argv[]) {
+    //todo
+    return EXIT_SUCCESS;
+}