MSL shader support

Co-authored-by: Isaac Marovitz <isaacryu@icloud.com>

XenosRecomp/CMakeLists.txt

@@ -4,6 +4,10 @@ if (WIN32)
     option(XENOS_RECOMP_DXIL "Generate DXIL shader cache" ON)
 endif()
 
+if (APPLE)
+    option(XENOS_RECOMP_AIR "Generate Metal AIR shader cache" ON)
+endif()
+
 set(SMOLV_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../thirdparty/smol-v/source")
 
 add_executable(XenosRecomp
@@ -30,13 +34,6 @@ target_precompile_headers(XenosRecomp PRIVATE pch.h)
 
 if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
     target_compile_options(XenosRecomp PRIVATE -Wno-switch -Wno-unused-variable -Wno-null-arithmetic -fms-extensions)
-
-    include(CheckCXXSymbolExists)
-    check_cxx_symbol_exists(_LIBCPP_VERSION version LIBCPP)
-    if(LIBCPP)
-        # Allows using std::execution
-        target_compile_options(XenosRecomp PRIVATE -fexperimental-library)
-    endif()
 endif()
 
 if (WIN32)
@@ -51,3 +48,8 @@ if (XENOS_RECOMP_DXIL)
     target_compile_definitions(XenosRecomp PRIVATE XENOS_RECOMP_DXIL)
     target_link_libraries(XenosRecomp PRIVATE Microsoft::DXIL)
 endif()
+
+if (XENOS_RECOMP_AIR)
+    target_compile_definitions(XenosRecomp PRIVATE XENOS_RECOMP_AIR)
+    target_sources(XenosRecomp PRIVATE air_compiler.cpp air_compiler.h)
+endif()

XenosRecomp/air_compiler.cpp

@@ -0,0 +1,81 @@
+#include "air_compiler.h"
+
+#include <fstream>
+#include <iterator>
+#include <spawn.h>
+#include <unistd.h>
+
+struct TemporaryPath
+{
+    const std::string path;
+
+    explicit TemporaryPath(std::string_view path) : path(path) {}
+
+    ~TemporaryPath()
+    {
+        unlink(path.c_str());
+    }
+};
+
+static int executeCommand(const char** argv)
+{
+    pid_t pid;
+    if (posix_spawn(&pid, argv[0], nullptr, nullptr, const_cast<char**>(argv), nullptr) != 0)
+        return -1;
+
+    int status;
+    if (waitpid(pid, &status, 0) == -1)
+        return -1;
+
+    return status;
+}
+
+std::vector<uint8_t> AirCompiler::compile(const std::string& shaderSource)
+{
+    // Save source to a location on disk for the compiler to read.
+    char sourcePathTemplate[PATH_MAX] = "/tmp/xenos_metal_XXXXXX.metal";
+    const int sourceFd = mkstemps(sourcePathTemplate, 6);
+    if (sourceFd == -1)
+    {
+        fmt::println("Failed to create temporary file for shader source: {}", strerror(errno));
+        std::exit(1);
+    }
+
+    const TemporaryPath sourcePath(sourcePathTemplate);
+    const TemporaryPath irPath(sourcePath.path + ".ir");
+    const TemporaryPath metalLibPath(sourcePath.path + ".metallib");
+
+    const ssize_t sourceWritten = write(sourceFd, shaderSource.data(), shaderSource.size());
+    close(sourceFd);
+    if (sourceWritten < 0)
+    {
+        fmt::println("Failed to write shader source to disk: {}", strerror(errno));
+        std::exit(1);
+    }
+
+    const char* compileCommand[] = {
+        "/usr/bin/xcrun", "-sdk", "macosx", "metal", "-o", irPath.path.c_str(), "-c", sourcePath.path.c_str(), "-Wno-unused-variable", "-frecord-sources", "-gline-tables-only", "-fmetal-math-mode=relaxed", "-D__air__",
+#ifdef UNLEASHED_RECOMP
+        "-DUNLEASHED_RECOMP",
+#endif
+        nullptr
+    };
+    if (const int compileStatus = executeCommand(compileCommand); compileStatus != 0)
+    {
+        fmt::println("Metal compiler exited with status: {}", compileStatus);
+        fmt::println("Generated source:\n{}", shaderSource);
+        std::exit(1);
+    }
+
+    const char* linkCommand[] = { "/usr/bin/xcrun", "-sdk", "macosx", "metallib", "-o", metalLibPath.path.c_str(), irPath.path.c_str(), nullptr };
+    if (const int linkStatus = executeCommand(linkCommand); linkStatus != 0)
+    {
+        fmt::println("Metal linker exited with status: {}", linkStatus);
+        fmt::println("Generated source:\n{}", shaderSource);
+        std::exit(1);
+    }
+
+    std::ifstream libStream(metalLibPath.path, std::ios::binary);
+    std::vector<uint8_t> data((std::istreambuf_iterator(libStream)), std::istreambuf_iterator<char>());
+    return data;
+}

XenosRecomp/air_compiler.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+class AirCompiler
+{
+public:
+    [[nodiscard]] static std::vector<uint8_t> compile(const std::string& shaderSource);
+};

XenosRecomp/dxc_compiler.cpp

@@ -34,6 +34,11 @@ IDxcBlob* DxcCompiler::compile(const std::string& shaderSource, bool compilePixe
             target = L"-T vs_6_0";
     }
 
+    if (!compileLibrary)
+    {
+        args[argCount++] = L"-E shaderMain";
+    }
+
     args[argCount++] = target;
     args[argCount++] = L"-HV 2021";
     args[argCount++] = L"-all-resources-bound";

XenosRecomp/main.cpp

@@ -1,7 +1,15 @@
+#include <deque>
+#include <mutex>
+#include <thread>
+
 #include "shader.h"
 #include "shader_recompiler.h"
 #include "dxc_compiler.h"
 
+#ifdef XENOS_RECOMP_AIR
+#include "air_compiler.h"
+#endif
+
 static std::unique_ptr<uint8_t[]> readAllBytes(const char* filePath, size_t& fileSize)
 {
     FILE* file = fopen(filePath, "rb");
@@ -26,9 +34,43 @@ struct RecompiledShader
     uint8_t* data = nullptr;
     IDxcBlob* dxil = nullptr;
     std::vector<uint8_t> spirv;
+    std::vector<uint8_t> air;
     uint32_t specConstantsMask = 0;
 };
 
+void recompileShader(RecompiledShader& shader, const std::string_view include, std::atomic<uint32_t>& progress, uint32_t numShaders)
+{
+    thread_local ShaderRecompiler recompiler;
+    recompiler = {};
+    recompiler.recompile(shader.data, include);
+
+    shader.specConstantsMask = recompiler.specConstantsMask;
+
+    thread_local DxcCompiler dxcCompiler;
+
+#ifdef XENOS_RECOMP_DXIL
+    shader.dxil = dxcCompiler.compile(recompiler.out, recompiler.isPixelShader, recompiler.specConstantsMask != 0, false);
+    assert(shader.dxil != nullptr);
+    assert(*(reinterpret_cast<uint32_t *>(shader.dxil->GetBufferPointer()) + 1) != 0 && "DXIL was not signed properly!");
+#endif
+
+#ifdef XENOS_RECOMP_AIR
+    shader.air = AirCompiler::compile(recompiler.out);
+#endif
+
+    IDxcBlob* spirv = dxcCompiler.compile(recompiler.out, recompiler.isPixelShader, false, true);
+    assert(spirv != nullptr);
+
+    bool result = smolv::Encode(spirv->GetBufferPointer(), spirv->GetBufferSize(), shader.spirv, smolv::kEncodeFlagStripDebugInfo);
+    assert(result);
+
+    spirv->Release();
+
+    size_t currentProgress = ++progress;
+    if ((currentProgress % 10) == 0 || (currentProgress == numShaders - 1))
+        fmt::println("Recompiling shaders... {}%", currentProgress / float(numShaders) * 100.0f);
+}
+
 int main(int argc, char** argv)
 {
 #ifndef XENOS_RECOMP_INPUT
@@ -71,6 +113,7 @@ int main(int argc, char** argv)
     {
         std::vector<std::unique_ptr<uint8_t[]>> files;
         std::map<XXH64_hash_t, RecompiledShader> shaders;
+        std::map<XXH64_hash_t, std::string> shaderFilenames;
 
         for (auto& file : std::filesystem::recursive_directory_iterator(input))
         {
@@ -99,6 +142,7 @@ int main(int argc, char** argv)
                     {
                         shader.first->second.data = fileData.get() + i;
                         foundAny = true;
+                        shaderFilenames[hash] = file.path().string();
                     }
 
                     i += dataSize;
@@ -113,38 +157,42 @@ int main(int argc, char** argv)
                 files.emplace_back(std::move(fileData));
         }
 
-        std::atomic<uint32_t> progress = 0;
-
-        std::for_each(std::execution::par_unseq, shaders.begin(), shaders.end(), [&](auto& hashShaderPair)
+        std::mutex shaderQueueMutex;
+        std::deque<XXH64_hash_t> shaderQueue;
+        for (const auto& [hash, _] : shaders)
         {
-                auto& shader = hashShaderPair.second;
+            shaderQueue.emplace_back(hash);
+        }
 
-                thread_local ShaderRecompiler recompiler;
-                recompiler = {};
-                recompiler.recompile(shader.data, include);
+        const uint32_t numThreads = std::max(std::thread::hardware_concurrency(), 1u);
+        fmt::println("Recompiling shaders with {} threads", numThreads);
 
-                shader.specConstantsMask = recompiler.specConstantsMask;
-
-                thread_local DxcCompiler dxcCompiler;
-
-#ifdef XENOS_RECOMP_DXIL
-                shader.dxil = dxcCompiler.compile(recompiler.out, recompiler.isPixelShader, recompiler.specConstantsMask != 0, false);
-                assert(shader.dxil != nullptr);
-                assert(*(reinterpret_cast<uint32_t *>(shader.dxil->GetBufferPointer()) + 1) != 0 && "DXIL was not signed properly!");
-#endif
-
-                IDxcBlob* spirv = dxcCompiler.compile(recompiler.out, recompiler.isPixelShader, false, true);
-                assert(spirv != nullptr);
-
-                bool result = smolv::Encode(spirv->GetBufferPointer(), spirv->GetBufferSize(), shader.spirv, smolv::kEncodeFlagStripDebugInfo);
-                assert(result);
-
-                spirv->Release();
-
-                size_t currentProgress = ++progress;
-                if ((currentProgress % 10) == 0 || (currentProgress == shaders.size() - 1))
-                    fmt::println("Recompiling shaders... {}%", currentProgress / float(shaders.size()) * 100.0f);
+        std::atomic<uint32_t> progress = 0;
+        std::vector<std::thread> threads;
+        threads.reserve(numThreads);
+        for (uint32_t i = 0; i < numThreads; i++)
+        {
+            threads.emplace_back([&]
+            {
+                while (true)
+                {
+                    XXH64_hash_t shaderHash;
+                    {
+                        std::lock_guard lock(shaderQueueMutex);
+                        if (shaderQueue.empty()) {
+                            return;
+                        }
+                        shaderHash = shaderQueue.front();
+                        shaderQueue.pop_front();
+                    }
+                    recompileShader(shaders[shaderHash], include, progress, shaders.size());
+                }
             });
+        }
+        for (auto& thread : threads)
+        {
+            thread.join();
+        }
 
         fmt::println("Creating shader cache...");
 
@@ -154,11 +202,21 @@ int main(int argc, char** argv)
 
         std::vector<uint8_t> dxil;
         std::vector<uint8_t> spirv;
+        std::vector<uint8_t> air;
 
         for (auto& [hash, shader] : shaders)
         {
-            f.println("\t{{ 0x{:X}, {}, {}, {}, {}, {} }},",
-                hash, dxil.size(), (shader.dxil != nullptr) ? shader.dxil->GetBufferSize() : 0, spirv.size(), shader.spirv.size(), shader.specConstantsMask);
+            const std::string& fullFilename = shaderFilenames[hash];
+            std::string filename = fullFilename;
+            size_t shaderPos = filename.find("shader");
+            if (shaderPos != std::string::npos) {
+                filename = filename.substr(shaderPos);
+                // Prevent bad escape sequences in Windows shader path.
+                std::replace(filename.begin(), filename.end(), '\\', '/');
+            }
+            f.println("\t{{ 0x{:X}, {}, {}, {}, {}, {}, {}, {}, \"{}\" }},",
+                hash, dxil.size(), (shader.dxil != nullptr) ? shader.dxil->GetBufferSize() : 0,
+                spirv.size(), shader.spirv.size(), air.size(), shader.air.size(), shader.specConstantsMask, filename);
 
             if (shader.dxil != nullptr)
             {
@@ -166,6 +224,10 @@ int main(int argc, char** argv)
                     reinterpret_cast<uint8_t *>(shader.dxil->GetBufferPointer()) + shader.dxil->GetBufferSize());
             }
 
+#ifdef XENOS_RECOMP_AIR
+            air.insert(air.end(), shader.air.begin(), shader.air.end());
+#endif
+
             spirv.insert(spirv.end(), shader.spirv.begin(), shader.spirv.end());
         }
 
@@ -189,6 +251,22 @@ int main(int argc, char** argv)
         f.println("const size_t g_dxilCacheDecompressedSize = {};", dxil.size());
 #endif
 
+#ifdef XENOS_RECOMP_AIR
+        fmt::println("Compressing AIR cache...");
+
+        std::vector<uint8_t> airCompressed(ZSTD_compressBound(air.size()));
+        airCompressed.resize(ZSTD_compress(airCompressed.data(), airCompressed.size(), air.data(), air.size(), level));
+
+        f.print("const uint8_t g_compressedAirCache[] = {{");
+
+        for (auto data : airCompressed)
+            f.print("{},", data);
+
+        f.println("}};");
+        f.println("const size_t g_airCacheCompressedSize = {};", airCompressed.size());
+        f.println("const size_t g_airCacheDecompressedSize = {};", air.size());
+#endif
+
         fmt::println("Compressing SPIRV cache...");
 
         std::vector<uint8_t> spirvCompressed(ZSTD_compressBound(spirv.size()));

XenosRecomp/pch.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #ifdef _WIN32
+#define NOMINMAX
 #include <Windows.h>
 #endif
 

XenosRecomp/shader_common.h

@@ -10,10 +10,12 @@
     #define SPEC_CONSTANT_REVERSE_Z         (1 << 4)
 #endif
 
-#if !defined(__cplusplus) || defined(__INTELLISENSE__)
+#if defined(__air__) || !defined(__cplusplus) || defined(__INTELLISENSE__)
 
+#ifndef __air__
 #define FLT_MIN asfloat(0xff7fffff)
 #define FLT_MAX asfloat(0x7f7fffff)
+#endif
 
 #ifdef __spirv__
 
@@ -35,6 +37,32 @@ struct PushConstants
 
 #define g_SpecConstants() g_SpecConstants
 
+#elif defined(__air__)
+
+#include <metal_stdlib>
+
+using namespace metal;
+
+constant uint G_SPEC_CONSTANTS [[function_constant(0)]];
+constant uint G_SPEC_CONSTANTS_VAL = is_function_constant_defined(G_SPEC_CONSTANTS) ? G_SPEC_CONSTANTS : 0;
+
+uint g_SpecConstants()
+{
+    return G_SPEC_CONSTANTS_VAL;
+}
+
+struct PushConstants
+{
+    ulong VertexShaderConstants;
+    ulong PixelShaderConstants;
+    ulong SharedConstants;
+};
+
+#define g_Booleans (*(reinterpret_cast<device uint*>(g_PushConstants.SharedConstants + 256)))
+#define g_SwappedTexcoords (*(reinterpret_cast<device uint*>(g_PushConstants.SharedConstants + 260)))
+#define g_HalfPixelOffset (*(reinterpret_cast<device float2*>(g_PushConstants.SharedConstants + 264)))
+#define g_AlphaThreshold (*(reinterpret_cast<device float*>(g_PushConstants.SharedConstants + 272)))
+
 #else
 
 #define DEFINE_SHARED_CONSTANTS() \
@@ -47,6 +75,93 @@ uint g_SpecConstants();
 
 #endif
 
+struct CubeMapData
+{
+    float3 cubeMapDirections[2];
+    uint cubeMapIndex;
+};
+
+#ifdef __air__
+
+struct Texture2DDescriptorHeap
+{
+    texture2d<float> tex;
+};
+
+struct Texture3DDescriptorHeap
+{
+    texture3d<float> tex;
+};
+
+struct TextureCubeDescriptorHeap
+{
+    texturecube<float> tex;
+};
+
+struct SamplerDescriptorHeap
+{
+    sampler samp;
+};
+
+uint2 getTexture2DDimensions(texture2d<float> texture)
+{
+    return uint2(texture.get_width(), texture.get_height());
+}
+
+float4 tfetch2D(constant Texture2DDescriptorHeap* textureHeap,
+                constant SamplerDescriptorHeap* samplerHeap,
+                uint resourceDescriptorIndex,
+                uint samplerDescriptorIndex,
+                float2 texCoord, float2 offset)
+{
+    texture2d<float> texture = textureHeap[resourceDescriptorIndex].tex;
+    sampler sampler = samplerHeap[samplerDescriptorIndex].samp;
+    return texture.sample(sampler, texCoord + offset / (float2)getTexture2DDimensions(texture));
+}
+
+float2 getWeights2D(constant Texture2DDescriptorHeap* textureHeap,
+                    constant SamplerDescriptorHeap* samplerHeap,
+                    uint resourceDescriptorIndex,
+                    uint samplerDescriptorIndex,
+                    float2 texCoord, float2 offset)
+{
+    texture2d<float> texture = textureHeap[resourceDescriptorIndex].tex;
+    return select(fract(texCoord * float2(getTexture2DDimensions(texture)) + offset - 0.5), 0.0, isnan(texCoord));
+}
+
+float4 tfetch3D(constant Texture3DDescriptorHeap* textureHeap,
+                constant SamplerDescriptorHeap* samplerHeap,
+                uint resourceDescriptorIndex,
+                uint samplerDescriptorIndex,
+                float3 texCoord)
+{
+    texture3d<float> texture = textureHeap[resourceDescriptorIndex].tex;
+    sampler sampler = samplerHeap[samplerDescriptorIndex].samp;
+    return texture.sample(sampler, texCoord);
+}
+
+float4 tfetchCube(constant TextureCubeDescriptorHeap* textureHeap,
+                  constant SamplerDescriptorHeap* samplerHeap,
+                  uint resourceDescriptorIndex,
+                  uint samplerDescriptorIndex,
+                  float3 texCoord, thread CubeMapData* cubeMapData)
+{
+    texturecube<float> texture = textureHeap[resourceDescriptorIndex].tex;
+    sampler sampler = samplerHeap[samplerDescriptorIndex].samp;
+    return texture.sample(sampler, cubeMapData->cubeMapDirections[(uint)texCoord.z]);
+}
+
+float4 cube(float4 value, thread CubeMapData* cubeMapData)
+{
+    uint index = cubeMapData->cubeMapIndex;
+    cubeMapData->cubeMapDirections[index] = value.xyz;
+    ++cubeMapData->cubeMapIndex;
+
+    return float4(0.0, 0.0, 0.0, index);
+}
+
+#else
+
 Texture2D<float4> g_Texture2DDescriptorHeap[] : register(t0, space0);
 Texture3D<float4> g_Texture3DDescriptorHeap[] : register(t0, space1);
 TextureCube<float4> g_TextureCubeDescriptorHeap[] : register(t0, space2);
@@ -71,6 +186,85 @@ float2 getWeights2D(uint resourceDescriptorIndex, uint samplerDescriptorIndex, f
     return select(isnan(texCoord), 0.0, frac(texCoord * getTexture2DDimensions(texture) + offset - 0.5));
 }
 
+float4 tfetch3D(uint resourceDescriptorIndex, uint samplerDescriptorIndex, float3 texCoord)
+{
+    return g_Texture3DDescriptorHeap[resourceDescriptorIndex].Sample(g_SamplerDescriptorHeap[samplerDescriptorIndex], texCoord);
+}
+
+float4 tfetchCube(uint resourceDescriptorIndex, uint samplerDescriptorIndex, float3 texCoord, inout CubeMapData cubeMapData)
+{
+    return g_TextureCubeDescriptorHeap[resourceDescriptorIndex].Sample(g_SamplerDescriptorHeap[samplerDescriptorIndex], cubeMapData.cubeMapDirections[texCoord.z]);
+}
+
+float4 cube(float4 value, inout CubeMapData cubeMapData)
+{
+    uint index = cubeMapData.cubeMapIndex;
+    cubeMapData.cubeMapDirections[index] = value.xyz;
+    ++cubeMapData.cubeMapIndex;
+
+    return float4(0.0, 0.0, 0.0, index);
+}
+
+#endif
+
+float4 tfetchR11G11B10(uint4 value)
+{
+    if (g_SpecConstants() & SPEC_CONSTANT_R11G11B10_NORMAL)
+    {
+        return float4(
+            (value.x & 0x00000400 ? -1.0 : 0.0) + ((value.x & 0x3FF) / 1024.0),
+            (value.x & 0x00200000 ? -1.0 : 0.0) + (((value.x >> 11) & 0x3FF) / 1024.0),
+            (value.x & 0x80000000 ? -1.0 : 0.0) + (((value.x >> 22) & 0x1FF) / 512.0),
+            0.0);
+    }
+    else
+    {
+#ifdef __air__
+        return as_type<float4>(value);
+#else
+        return asfloat(value);
+#endif
+    }
+}
+
+#ifdef __air__
+#define selectWrapper(a, b, c) select(c, b, a)
+#else
+#define selectWrapper(a, b, c) select(a, b, c)
+#endif
+
+#ifdef __air__
+#define frac(X) fract(X)
+
+template<typename T>
+void clip(T a)
+{
+    if (a < 0.0) {
+        discard_fragment();
+    }
+}
+
+template<typename T>
+float rcp(T a)
+{
+    return 1.0 / a;
+}
+
+template<typename T>
+float4x4 mul(T a, T b)
+{
+    return b * a;
+}
+#endif
+
+#ifdef __air__
+#define UNROLL
+#define BRANCH
+#else
+#define UNROLL [unroll]
+#define BRANCH [branch]
+#endif
+
 float w0(float a)
 {
     return (1.0f / 6.0f) * (a * (a * (-a + 3.0f) - 3.0f) + 1.0f);
@@ -111,6 +305,46 @@ float h1(float a)
     return 1.0f + w3(a) / (w2(a) + w3(a)) + 0.5f;
 }
 
+#ifdef __air__
+
+float4 tfetch2DBicubic(constant Texture2DDescriptorHeap* textureHeap,
+                       constant SamplerDescriptorHeap* samplerHeap,
+                       uint resourceDescriptorIndex,
+                       uint samplerDescriptorIndex,
+                       float2 texCoord, float2 offset)
+{
+    texture2d<float> texture = textureHeap[resourceDescriptorIndex].tex;
+    sampler sampler = samplerHeap[samplerDescriptorIndex].samp;
+    uint2 dimensions = getTexture2DDimensions(texture);
+
+    float x = texCoord.x * dimensions.x + offset.x;
+    float y = texCoord.y * dimensions.y + offset.y;
+
+    x -= 0.5f;
+    y -= 0.5f;
+    float px = floor(x);
+    float py = floor(y);
+    float fx = x - px;
+    float fy = y - py;
+
+    float g0x = g0(fx);
+    float g1x = g1(fx);
+    float h0x = h0(fx);
+    float h1x = h1(fx);
+    float h0y = h0(fy);
+    float h1y = h1(fy);
+
+    float4 r =
+        g0(fy) * (g0x * texture.sample(sampler, float2(px + h0x, py + h0y) / float2(dimensions)) +
+              g1x * texture.sample(sampler, float2(px + h1x, py + h0y) / float2(dimensions))) +
+        g1(fy) * (g0x * texture.sample(sampler, float2(px + h0x, py + h1y) / float2(dimensions)) +
+              g1x * texture.sample(sampler, float2(px + h1x, py + h1y) / float2(dimensions)));
+
+    return r;
+}
+
+#else
+
 float4 tfetch2DBicubic(uint resourceDescriptorIndex, uint samplerDescriptorIndex, float2 texCoord, float2 offset)
 {
     Texture2D<float4> texture = g_Texture2DDescriptorHeap[resourceDescriptorIndex];
@@ -143,50 +377,11 @@ float4 tfetch2DBicubic(uint resourceDescriptorIndex, uint samplerDescriptorIndex
     return r;
 }
 
-float4 tfetch3D(uint resourceDescriptorIndex, uint samplerDescriptorIndex, float3 texCoord)
-{
-    return g_Texture3DDescriptorHeap[resourceDescriptorIndex].Sample(g_SamplerDescriptorHeap[samplerDescriptorIndex], texCoord);
-}
+#endif
 
-struct CubeMapData
+float4 swapFloats(uint swappedFloats, float4 value, uint semanticIndex)
 {
-    float3 cubeMapDirections[2];
-    uint cubeMapIndex;
-};
-
-float4 tfetchCube(uint resourceDescriptorIndex, uint samplerDescriptorIndex, float3 texCoord, inout CubeMapData cubeMapData)
-{
-    return g_TextureCubeDescriptorHeap[resourceDescriptorIndex].Sample(g_SamplerDescriptorHeap[samplerDescriptorIndex], cubeMapData.cubeMapDirections[texCoord.z]);
-}
-
-float4 tfetchR11G11B10(uint4 value)
-{
-    if (g_SpecConstants() & SPEC_CONSTANT_R11G11B10_NORMAL)
-    {
-        return float4(
-            (value.x & 0x00000400 ? -1.0 : 0.0) + ((value.x & 0x3FF) / 1024.0),
-            (value.x & 0x00200000 ? -1.0 : 0.0) + (((value.x >> 11) & 0x3FF) / 1024.0),
-            (value.x & 0x80000000 ? -1.0 : 0.0) + (((value.x >> 22) & 0x1FF) / 512.0),
-            0.0);
-    }
-    else
-    {
-        return asfloat(value);
-    }
-}
-
-float4 tfetchTexcoord(uint swappedTexcoords, float4 value, uint semanticIndex)
-{
-    return (swappedTexcoords & (1ull << semanticIndex)) != 0 ? value.yxwz : value;
-}
-
-float4 cube(float4 value, inout CubeMapData cubeMapData)
-{
-    uint index = cubeMapData.cubeMapIndex;
-    cubeMapData.cubeMapDirections[index] = value.xyz;
-    ++cubeMapData.cubeMapIndex;
-    
-    return float4(0.0, 0.0, 0.0, index);
+    return (swappedFloats & (1ull << semanticIndex)) != 0 ? value.yxwz : value;
 }
 
 float4 dst(float4 src0, float4 src1)
@@ -204,15 +399,34 @@ float4 max4(float4 src0)
     return max(max(src0.x, src0.y), max(src0.z, src0.w));
 }
 
+#ifdef __air__
+
+float2 getPixelCoord(constant Texture2DDescriptorHeap* textureHeap,
+                     uint resourceDescriptorIndex,
+                     float2 texCoord)
+{
+    texture2d<float> texture = textureHeap[resourceDescriptorIndex].tex;
+    return (float2)getTexture2DDimensions(texture) * texCoord;
+}
+
+#else
+
 float2 getPixelCoord(uint resourceDescriptorIndex, float2 texCoord)
 {
     return getTexture2DDimensions(g_Texture2DDescriptorHeap[resourceDescriptorIndex]) * texCoord;
 }
 
+#endif
+
 float computeMipLevel(float2 pixelCoord)
 {
+#ifdef __air__
+    float2 dx = dfdx(pixelCoord);
+    float2 dy = dfdy(pixelCoord);
+#else
     float2 dx = ddx(pixelCoord);
     float2 dy = ddy(pixelCoord);
+#endif
     float deltaMaxSqr = max(dot(dx, dx), dot(dy, dy));
     return max(0.0, 0.5 * log2(deltaMaxSqr));
 }

XenosRecomp/shader_recompiler.h

@@ -45,7 +45,7 @@ struct ShaderRecompiler : StringBuffer
             out += '\t';
     }
 
-    void printDstSwizzle(uint32_t dstSwizzle, bool operand);
+    uint32_t printDstSwizzle(uint32_t dstSwizzle, bool operand);
     void printDstSwizzle01(uint32_t dstRegister, uint32_t dstSwizzle);
 
     void recompile(const VertexFetchInstruction& instr, uint32_t address);