WIP | Add slang + compile slang and optimize spirv

.clang-format

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+

.clangd

@@ -0,0 +1,3 @@
+CompileFlags:
+  Add: -Wno-unknown-warning-option
+  Remove: [-m*, -f*]

.gitignore

@@ -1,2 +1,4 @@
 build/
-
+.idea/
+bin/
+/bin/

CMakeLists.txt

@@ -1,42 +1,51 @@
 cmake_minimum_required(VERSION 4.1)
 project(triangle)
 set(CMAKE_CXX_STANDARD 20)
+set(BINARY_DIR "${CMAKE_CURRENT_SOURCE_DIR}/bin/${CMAKE_BUILD_TYPE}/")
+set(ASSETS_DIR "${CMAKE_CURRENT_SOURCE_DIR}/assets")
 
-##### Project settings ######
+set(BUILD_SHARED_LIBS OFF)
 
-# Set the assets directory
-set(ASSETS_DIR "assets")
-set(SHADERS_DIR "assets/shaders")
-
-if(${CMAKE_BUILD_TYPE} STREQUAL "Debug")
-    set(BUILD_SHARED_LIBS ON)
-else()
-    set(BUILD_SHARED_LIBS OFF)
-endif()
-
-##### Dependencies #####
 set(CMAKE_POLICY_VERSION_MINIMUM 3.5)
 option(ENABLE_CPP20_MODULE "Enable C++ 20 module support for Vulkan" OFF)
-file(GLOB CMAKE_FILES "${CMAKE_CURRENT_SOURCE_DIR}/cmake/*.cmake")
-foreach(cmake_file ${CMAKE_FILES})
-    include(${cmake_file})
-endforeach()
 
-##### Project actions #####
+set (CMAKE_FILES
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/CPM.cmake"
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/compileCommands.cmake"
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/platform.cmake"
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/copy_files.cmake"
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Vulkan.cmake"
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/GLFW.cmake"
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/spirv-headers.cmake"
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/spirv-tools.cmake"
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/slang-src.cmake"
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/spirv-reflect.cmake"
+)
+
+foreach (cmake_file ${CMAKE_FILES})
+    include (${cmake_file})
+endforeach ()
+
+create_copy_folder_target(copy_assets_folder ${ASSETS_DIR} "${BINARY_DIR}/assets")
 
-# Define out executable
 file(GLOB SRC_FILES "${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp")
 file(GLOB HEADER_FILES "${CMAKE_CURRENT_SOURCE_DIR}/src/*.h")
 add_executable(${PROJECT_NAME} ${SRC_FILES} ${HEADER_FILES})
 
-# Add the shaders dependency
-add_dependencies(${PROJECT_NAME} slang_shaders)
-add_dependencies(${PROJECT_NAME} glsl_shaders)
+set_target_properties(${PROJECT_NAME} PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${BINARY_DIR}")
+add_dependencies(${PROJECT_NAME} copy_assets_folder)
 
-target_include_directories(${PROJECT_NAME} PUBLIC "${glfw_SOURCE_DIR}/include")
-
-# Link with libs
-target_link_libraries(${PROJECT_NAME}
-    glfw
-    Vulkan::cppm
+target_include_directories(${PROJECT_NAME} PUBLIC
+        "${glfw_SOURCE_DIR}/include"
+        "${CMAKE_CURRENT_SOURCE_DIR}/src"
+)
+
+target_link_libraries(${PROJECT_NAME}
+        slang
+        slang-rt
+        core # slang::core
+        SPIRV-Tools-opt
+        spirv-reflect-static
+        glfw
+        Vulkan::cppm
 )

README.md

@@ -4,25 +4,46 @@ Basic rainbow triangle rendered with Vulkan.
 
 Created as a reference project while following the [official tutorial located here](https://docs.vulkan.org/tutorial/latest/00_Introduction.html)
 
-## Compiling
+## Building
 
-Scripts for Linux are located in ./scripts/.
+A windows and linux build_script binary compiled from [this](https://git.catgirls.fish/firewire/build-script) project has been included.
+You can just run that from the root of the repo with `./scripts/build_script build` (or `.\scripts\build_script.exe build` for windows) to build all release types.
 
-Make sure you have a CPP compiler, CMake, and ninja installed.
+Most dependencies are included through the use of CPM, however you will need to install the VulkanSDK, which can be acquired from the [official site](https://vulkan.lunarg.com/sdk/home)
 
-- `configure-{type].sh` - Creates and configures the associated build type in ./build/{type}.
-- `build-{type}.sh` - Builds the associated build type in ./build/{type}.
-- `build.sh` - Configures and builds all types in ./build/
-- `clean.sh` - Runs `ninja clean` on all build types
+On linux systems you'll likely need dependencies for GLFW.
+GLFW itself is included with this project, however its a lot simpler to just install glfw through your package manager and have it handle them.
 
-If you are on linux and don't wish you build using the scripts you can go through
-the following steps:
+Ubuntu: `apt update && apt install libglfw3-dev`
 
-1. `mkdir -p build; cd build`;
-2. `cmake ../`;
-3. `make -j 8`
+Fedora: `dnf install glfw-devel`
 
-Windows users, you're on your own. (sorry)
+Arch: `pacman -S glfw`
 
-## Running 
-Compiled exe is `triangle` on linux or `triangle.exe` on windows.
+### Building manually
+
+#### Linux
+
+The normal cmake build process is all you need.
+
+1. Make the build directory `mkdir -p build`
+2. Configure the project `cmake . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release`
+3. Build! `cmake --build build`
+
+#### Windows
+
+1. Git clone the repo
+2. Run [cmake-gui](https://cmake.org/download/)
+3. Select the location you cloned the repo into as the source directory
+4. Create a new directory called 'build' in the source directory and select it
+   as the build directory
+5. Configure and generate
+6. Open the generated Visual studio project
+7. Right click the project in the project explorer and select 'build'
+
+## A note for MacOS users
+
+I do not have a MacOS system to build or test on, so building is solely up to you.
+All code has been kept as cross-platform as possible so it _should_ just work,
+but if you run into any issues, feel free to submit a pull request with an updated
+codebase or readme with compilation instructions.

cmake/GLFW.cmake

@@ -6,6 +6,6 @@ CPMAddPackage (
   OPTIONS "GLFW_BUILD_DOCS OFF"
   OPTIONS "GLFW_BUILD_TEST OFF"
   OPTIONS "GLFW_BUILD_EXAMPLES OFF"
-  OPTIONS "GLFW_BUILD_X11 OFF"
+  OPTIONS "GLFW_BUILD_X11 ON"
   OPTIONS "GLFW_BUILD_WAYLAND ON"
 )

cmake/copy_files.cmake

@@ -0,0 +1,11 @@
+
+function(create_copy_folder_target target_name src dst)
+    add_custom_target(${target_name}
+        COMMAND
+            ${CMAKE_COMMAND}
+            -E copy_directory
+            ${src}
+            ${dst}
+        COMMENT "Copying ${src} to ${dst}"
+)
+endfunction()

cmake/glsl.cmake

@@ -1,37 +0,0 @@
-option(SHADERS_DIR "Directory to look for GLSL shaders" "assets/shaders")
-
-find_program(GLSLC_EXECUTABLE NAMES glslc)
-if(NOT GLSLC_EXECUTABLE)
-    message(FATAL_ERROR "glslc executable not found.")
-else()
-    message(STATUS "Found glslc executable: ${GLSLC_EXECUTABLE}")
-endif()
-
-function(create_glslc_shader_target TARGET SOURCE_DIR OUTPUT_DIR)
-    file(MAKE_DIRECTORY ${OUTPUT_DIR})
-    message(STATUS "GLSL Shader output directory: ${OUTPUT_DIR}")
-    file (GLOB SHADER_FILES "${SOURCE_DIR}/*.vert")
-    file(GLOB FRAG_FILES "${SOURCE_DIR}/*.frag")
-    list(APPEND SHADER_FILES ${FRAG_FILES})
-    message(STATUS "Found glsl shaders: ${SHADER_FILES}")
-    set(OUTPUT_FILES "")
-    foreach(SHADER_FILE ${SHADER_FILES})
-        get_filename_component(SHADER_NAME ${SHADER_FILE} NAME)
-        set(OUTPUT_FILE "${OUTPUT_DIR}/${SHADER_NAME}.spv")
-        list(APPEND OUTPUT_FILES ${OUTPUT_FILE})
-        message(STATUS "Compiling ${SHADER_FILE} to ${OUTPUT_FILE}")
-        add_custom_command (
-            OUTPUT ${OUTPUT_FILE}
-            COMMAND ${GLSLC_EXECUTABLE} ${SHADER_FILE} -o ${OUTPUT_FILE}
-            DEPENDS ${SHADER_FILE}
-            COMMENT "Compiling ${SHADER_FILE} -> ${OUTPUT_FILE}"
-            VERBATIM
-        )
-    endforeach()
-    add_custom_target(${TARGET} ALL DEPENDS ${OUTPUT_FILES})
-endfunction()
-
-create_glslc_shader_target(glsl_shaders
-    "${SHADERS_DIR}"
-    "${CMAKE_CURRENT_BINARY_DIR}/${SHADERS_DIR}"
-)

cmake/slang-src.cmake

@@ -0,0 +1,49 @@
+set(SLANG_ENABLE_CUDA OFF CACHE BOOL "")
+set(SLANG_ENABLE_OPTIX OFF CACHE BOOL "")
+set(SLANG_ENABLE_NVAPI OFF CACHE BOOL "")
+set(SLANG_ENABLE_XLIB OFF CACHE BOOL "")
+set(SLANG_ENABLE_AFTERMATH OFF CACHE BOOL "")
+set(SLANG_ENABLE_DX_ON_VK OFF CACHE BOOL "")
+set(SLANG_ENABLE_GFX OFF CACHE BOOL "")
+set(SLANG_ENABLE_SLANG_RHI OFF CACHE BOOL "")
+set(SLANG_ENABLE_SLANGC ON CACHE BOOL "")
+set(SLANG_ENABLE_SLANGRT ON CACHE BOOL "")
+set(SLANG_ENABLE_SLANG_GLSLANG OFF CACHE BOOL "")
+set(SLANG_ENABLE_TESTS OFF CACHE BOOL "")
+set(SLANG_ENABLE_EXAMPLES OFF CACHE BOOL "")
+set(SLANG_ENABLE_REPLAYER OFF CACHE BOOL "")
+set(SLANG_ENABLE_PREBUILT_BINARIES OFF CACHE BOOL "")
+set(SLANG_EMBED_CORE_MODULE_SOURCE OFF CACHE BOOL "")
+set(SLANG_ENABLE_DXIL OFF CACHE BOOL "")
+set(SLANG_LIB_TYPE STATIC CACHE STRING "")
+set(SLANG_RHI_ENABLE_D3D11 OFF CACHE BOOL "")
+set(SLANG_RHI_ENABLE_D3D12 OFF CACHE BOOL "")
+set(SLANG_RHI_ENABLE_METAL OFF CACHE BOOL "")
+set(SLANG_RHI_ENABLE_CUDA OFF CACHE BOOL "")
+set(SLANG_RHI_ENABLE_WGPU OFF CACHE BOOL "")
+
+CPMAddPackage(
+        URI "gh:shader-slang/slang@2026.14"
+        OPTIONS "SLANG_ENABLE_CUDA OFF"
+        OPTIONS "SLANG_ENABLE_OPTIX OFF"
+        OPTIONS "SLANG_ENABLE_NVAPI OFF"
+        OPTIONS "SLANG_ENABLE_XLIB OFF"
+        OPTIONS "SLANG_ENABLE_AFTERMATH OFF"
+        OPTIONS "SLANG_ENABLE_DX_ON_VK OFF"
+        OPTIONS "SLANG_ENABLE_GFX OFF"
+        OPTIONS "SLANG_ENABLE_SLANG_RHI OFF"
+        OPTIONS "SLANG_ENABLE_SLANGC ON"
+        OPTIONS "SLANG_ENABLE_SLANGRT ON"
+        OPTIONS "SLANG_ENABLE_SLANG_GLSLANG OFF"
+        OPTIONS "SLANG_ENABLE_TESTS OFF"
+        OPTIONS "SLANG_ENABLE_REPLAYER OFF"
+        OPTIONS "SLANG_ENABLE_PREBUILT_BINARIES OFF"
+        OPTIONS "SLANG_EMBED_CORE_MODULE_SOURCE OFF"
+        OPTIONS "SLANG_ENABLE_DXIL OFF"
+        OPTIONS "SLANG_LIB_TYPE STATIC"
+        OPTIONS "SLANG_RHI_ENABLE_D3D11 OFF"
+        OPTIONS "SLANG_RHI_ENABLE_D3D12 OFF"
+        OPTIONS "SLANG_RHI_ENABLE_METAL OFF"
+        OPTIONS "SLANG_RHI_ENABLE_CUDA OFF"
+        OPTIONS "SLANG_RHI_ENABLE_WGPU OFF"
+)

cmake/slang.cmake

@@ -1,36 +0,0 @@
-option(SHADERS_DIR "Directory to look for SLANG shaders" "assets/shaders")
-
-find_program(SLANGC_EXECUTABLE NAMES slangc)
-if(NOT SLANGC_EXECUTABLE)
-    message(FATAL_ERROR "slangc executable not found.")
-else()
-    message(STATUS "Found slangc executable: ${SLANGC_EXECUTABLE}")
-endif()
-
-function(create_slang_shader_target TARGET SOURCE_DIR OUTPUT_DIR)
-    file(MAKE_DIRECTORY ${OUTPUT_DIR})
-    message(STATUS "Shader output directory: ${OUTPUT_DIR}")
-    file(GLOB SHADER_FILES "${SOURCE_DIR}/*.slang")
-    message(STATUS "Found shaders: ${SHADER_FILES}")
-    set(ENTRY_POINTS -entry vertMain -entry fragMain)
-    set(OUTPUT_FILES "")
-    foreach(SHADER_FILE ${SHADER_FILES})
-        get_filename_component(SHADER_NAME ${SHADER_FILE} NAME_WE)
-        set(OUTPUT_FILE "${OUTPUT_DIR}/${SHADER_NAME}.spv")
-        list(APPEND OUTPUT_FILES ${OUTPUT_FILE})
-        message(STATUS "Compiling ${SHADER_FILE} to ${OUTPUT_FILE}")
-        add_custom_command(
-                OUTPUT  ${OUTPUT_FILE}
-                COMMAND ${SLANGC_EXECUTABLE} ${SHADER_FILE} -target spirv -profile spirv_1_4 -emit-spirv-directly -fvk-use-entrypoint-name ${ENTRY_POINTS} -o ${OUTPUT_FILE}
-                DEPENDS ${SHADER_FILE}
-                COMMENT "Compiling ${SHADER_FILE} -> ${OUTPUT_FILE}"
-                VERBATIM
-        )
-    endforeach()
-    add_custom_target(${TARGET} ALL DEPENDS ${OUTPUT_FILES})
-endfunction()
-
-create_slang_shader_target(slang_shaders
-    "${SHADERS_DIR}"
-    "${CMAKE_CURRENT_BINARY_DIR}/${SHADERS_DIR}"
-)

cmake/spirv-headers.cmake

@@ -0,0 +1,7 @@
+CPMAddPackage(
+        URL "https://github.com/KhronosGroup/SPIRV-Headers/archive/refs/tags/vulkan-sdk-1.4.357.0.zip"
+        NAME SPIRV-Headers
+        OPTIONS "SPIRV_SKIP_TESTS TRUE"
+        OPTIONS "SPIRV_SKIP_EXECUTABLES TRUE"
+        OPTIONS "SPIRV_WERROR FALSE"
+)

cmake/spirv-reflect.cmake

@@ -0,0 +1,9 @@
+CPMAddPackage(
+        URI "https://github.com/KhronosGroup/SPIRV-Reflect/archive/refs/tags/vulkan-sdk-1.4.357.0.zip"
+        NAME SPIRV-Reflect
+        OPTIONS "SPIRV_SKIP_TESTS ON"
+        OPTIONS "SPIRV_SKIP_EXECUTABLES ON"
+        OPTIONS "SPIRV_WERROR OFF"
+        OPTIONS "SPIRV_REFLECT_EXECUTABLE OFF"
+        OPTIONS "SPIRV_REFLECT_STATIC_LIB ON"
+)

cmake/spirv-tools.cmake

@@ -0,0 +1,11 @@
+CPMAddPackage(
+        NAME SPIRV-Tools
+        GIT_REPOSITORY "https://github.com/KhronosGroup/SPIRV-Tools"
+        GIT_TAG "vulkan-sdk-1.4.357"
+        OPTIONS "SPIRV_SKIP_TESTS ON"
+        OPTIONS "SPIRV_SKIP_EXECUTABLES ON"
+        OPTIONS "SPIRV_WERROR OFF"
+)
+if (TARGET spirv-tools-check-python-tests)
+    set_target_properties(spirv-tools-check-python-tests PROPERTIES EXCLUDE_FROM_ALL ON)
+endif ()

scripts/build-debug.sh

@@ -1,7 +0,0 @@
-#!/bin/bash
-cd ..
-mkdir -p build
-cd build || exit
-mkdir -p debug
-cd debug || exit
-ninja

scripts/build-release.sh

@@ -1,8 +0,0 @@
-#!/bin/bash
-
-cd ..
-mkdir -p build
-cd build || exit
-mkdir -p release
-cd release || exit
-ninja

scripts/build-relwithdeb.sh

@@ -1,8 +0,0 @@
-#!/bin/bash
-
-cd ..
-mkdir -p build
-cd build || exit
-mkdir -p relwithdeb
-cd relwithdeb || exit
-ninja

scripts/build.sh

@@ -1,21 +0,0 @@
-#!/bin/bash
-
-cd ../
-mkdir -p build
-cd build || exit
-mkdir -p debug
-cd debug || exit
-cmake ../../ -G Ninja -DCMAKE_BUILD_TYPE=Debug
-ninja
-
-cd ..
-mkdir -p release
-cd release || exit
-cmake ../../ -G Ninja -DCMAKE_BUILD_TYPE=Release
-ninja
-
-cd ..
-mkdir -p relwithdeb
-cd relwithdeb || exit
-cmake ../../ -G Ninja -DCMAKE_BUILD_TYPE=RelWithDebInfo
-ninja

scripts/clean.sh

@@ -1,13 +0,0 @@
-#!/bin/bash
-
-cd ..
-cd build/debug || exit
-ninja clean
-
-cd ..
-cd release || exit
-ninja clean
-
-cd ..
-cd relwithdeb || exit
-ninja clean

scripts/configure-debug.sh

@@ -1,8 +0,0 @@
-#!/bin/bash
-
-cd ..
-mkdir -p build
-cd build || exit
-mkdir -p debug
-cd debug || exit
-cmake ../../ -G Ninja -DCMAKE_BUILD_TYPE=Debug

scripts/configure-release.sh

@@ -1,8 +0,0 @@
-#!/bin/bash
-
-cd ..
-mkdir -p build
-cd build || exit
-mkdir -p release
-cd release || exit
-cmake ../../ -G Ninja -DCMAKE_BUILD_TYPE=Release

scripts/configure-relwithdeb.sh

@@ -1,8 +0,0 @@
-#!/bin/bash
-
-cd ..
-mkdir -p build
-cd build || exit
-mkdir -p relwithdeb
-cd relwithdeb || exit
-cmake ../../ -G Ninja -DCMAKE_BUILD_TYPE=RelWithDebInfo

src/app.h

@@ -2,6 +2,8 @@
 // INCLUDES //
 
 // Include vulkan
+#include "slang.h"
+
 #include <cstdint>
 #include <vector>
 
@@ -106,7 +108,9 @@ private:
 
     // Shader //
     static std::vector<char> readFile(const std::string &filename);
-    [[nodiscard]] vk::raii::ShaderModule createShaderModule(const std::vector<char> &code) const;
+    [[nodiscard]] vk::raii::ShaderModule createShaderModule(const std::vector<uint8_t> &code) const;
+    static void compileShaderSlang(slang::IGlobalSession *&slangGlobalSession, const char* code, const char* entryPointName, std::vector<uint8_t> *outSPIRV);
+    static void optimizeSPIRV(std::vector<uint8_t> *inoutSPIRV);
 
     // Pipeline //
     void createGraphicsPipeline();

src/main.cpp

@@ -5,6 +5,8 @@ int main() {
     // Create the application
     Application app;
 
+    // TODO: Add slang global session destroy
+
     try {
         // Run le app
         app.run();

src/pipeline.cpp

@@ -1,21 +1,30 @@
+#include "app.h"
+#include "slang-com-ptr.h"
+#include "vulkan/vulkan.hpp"
 #include <cstdint>
 #include <vulkan/vulkan_core.h>
 #include <vulkan/vulkan_raii.hpp>
-#include "app.h"
-#include "vulkan/vulkan.hpp"
 
 void Application::createGraphicsPipeline() {
     // Load in the shader
-    auto shaderCode = readFile("assets/shaders/shader.spv");
-    // Create the shader module
-    vk::raii::ShaderModule shaderModule = createShaderModule(shaderCode);
+    auto shaderCode = readFile("assets/shaders/shader.slang");
+    std::vector<uint8_t> vertCode;
+    std::vector<uint8_t> fragCode;
+    Slang::ComPtr<slang::IGlobalSession> slangGlobalSession;
+    compileShaderSlang(*slangGlobalSession.writeRef(), shaderCode.data(), "vertMain", &vertCode);
+    compileShaderSlang(*slangGlobalSession.writeRef(), shaderCode.data(), "fragMain", &fragCode);
+
+    // Create the vertex shader module
+    vk::raii::ShaderModule vertModule = createShaderModule(vertCode);
+    // Create the fragment shader module
+    vk::raii::ShaderModule fragModule = createShaderModule(fragCode);
 
     // Define the fragment and vertex shader stages, making sure to specify "vertMain" and "fragMain" are the entry
     // points
     vk::PipelineShaderStageCreateInfo vertShaderStageInfo{
-            .stage = vk::ShaderStageFlagBits::eVertex, .module = shaderModule, .pName = "vertMain"};
+            .stage = vk::ShaderStageFlagBits::eVertex, .module = vertModule, .pName = "vertMain"};
     vk::PipelineShaderStageCreateInfo fragShaderStageInfo{
-            .stage = vk::ShaderStageFlagBits::eFragment, .module = shaderModule, .pName = "fragMain"};
+            .stage = vk::ShaderStageFlagBits::eFragment, .module = fragModule, .pName = "fragMain"};
     // Make sure the stages are in an array so its easier to pass on later on
     vk::PipelineShaderStageCreateInfo shaderStages[] = {vertShaderStageInfo, fragShaderStageInfo};
 

src/shader.cpp

@@ -1,7 +1,13 @@
-#include <fstream>
-#include <vulkan/vulkan_raii.hpp>
 #include "app.h"
 #include "vulkan/vulkan.hpp"
+#include <bits/regex_constants.h>
+#include <core/slang-basic.h>
+#include <fstream>
+#include <slang-com-helper.h>
+#include <slang-com-ptr.h>
+#include <slang.h>
+#include <spirv-tools/optimizer.hpp>
+#include <vulkan/vulkan_raii.hpp>
 
 std::vector<char> Application::readFile(const std::string &filename) {
     // Load the file in, checking to make sure it openned without errors
@@ -21,8 +27,8 @@ std::vector<char> Application::readFile(const std::string &filename) {
     return buffer;
 }
 
-vk::raii::ShaderModule Application::createShaderModule(const std::vector<char> &code) const {
-    // Create the shader module (feel like this is self explainatory enough to not need a comment at all...)
+vk::raii::ShaderModule Application::createShaderModule(const std::vector<uint8_t> &code) const {
+    // Create the shader module (feel like this is self explanatory enough to not need a comment at all...)
     vk::ShaderModuleCreateInfo createInfo{.codeSize = code.size() * sizeof(char),
                                           .pCode = reinterpret_cast<const uint32_t *>(code.data())};
 
@@ -30,3 +36,121 @@ vk::raii::ShaderModule Application::createShaderModule(const std::vector<char> &
 
     return shaderModule;
 }
+
+void Application::compileShaderSlang(slang::IGlobalSession *&slangGlobalSession,
+                                     const char *code,
+                                     const char *entryPointName,
+                                     std::vector<uint8_t> *outSPIRV) {
+    if (!slangGlobalSession) {
+        Slang::ComPtr<slang::IGlobalSession> globalSession;
+        if (SLANG_FAILED(slang::createGlobalSession(globalSession.writeRef()))) {
+            throw std::runtime_error("Failed to create slang global session");
+        }
+        slangGlobalSession = globalSession.detach();
+    }
+
+    // clang-format off
+    const slang::CompilerOptionEntry compilerOptions[] = {
+        {.name = slang::CompilerOptionName::Capability, .value = {.kind = slang::CompilerOptionValueKind::String, .stringValue0 = "SPV_GOOGLE_user_type"}},
+        {.name = slang::CompilerOptionName::Capability, .value = {.kind = slang::CompilerOptionValueKind::String, .stringValue0 = "spvDerivativeControl"}},
+        {.name = slang::CompilerOptionName::Capability, .value = {.kind = slang::CompilerOptionValueKind::String, .stringValue0 = "spvImageQuery"}},
+        {.name = slang::CompilerOptionName::Capability, .value = {.kind = slang::CompilerOptionValueKind::String, .stringValue0 = "spvImageGatherExtended"}},
+        {.name = slang::CompilerOptionName::Capability, .value = {.kind = slang::CompilerOptionValueKind::String, .stringValue0 = "spvSparseResidency"}},
+        {.name = slang::CompilerOptionName::Capability, .value = {.kind = slang::CompilerOptionValueKind::String, .stringValue0 = "spvMinLog"}},
+        {.name = slang::CompilerOptionName::Capability, .value = {.kind = slang::CompilerOptionValueKind::String, .stringValue0 = "spvFragmentFullyCoveredEXT"}},
+        {.name = slang::CompilerOptionName::Capability, .value = {.kind = slang::CompilerOptionValueKind::String, .stringValue0 = "spvRayTracingPositionFetchKHR"}},
+        {.name = slang::CompilerOptionName::Capability, .value = {.kind = slang::CompilerOptionValueKind::String, .stringValue0 = "spvRayQueryKHR"}},
+        {.name = slang::CompilerOptionName::Capability, .value = {.kind = slang::CompilerOptionValueKind::String, .stringValue0 = "spvInt64Atomics"}},
+    };
+    // clang-format on
+
+    const slang::TargetDesc targetDesc = {
+        .format = SLANG_SPIRV,
+        .profile = slangGlobalSession->findProfile("spirv_1_6"),
+        .flags = SLANG_TARGET_FLAG_GENERATE_SPIRV_DIRECTLY,
+        .forceGLSLScalarBufferLayout = true,
+        .compilerOptionEntries = &compilerOptions[0],
+        // You really should have a function that figures out the size of an
+        // array, but honestly even this function is beyond the scope of this
+        // project so im just hardcoding it for now.
+        .compilerOptionEntryCount = 10,
+    };
+
+    const slang::CompilerOptionEntry sessionOptions[] = {
+        {
+            .name = slang::CompilerOptionName::DisableWarning,
+            .value = {.kind = slang::CompilerOptionValueKind::String, .stringValue0 = "39001"},
+        },
+    };
+
+    const slang::SessionDesc sessionDesc = {
+        .targets =  &targetDesc,
+        .targetCount = 1,
+        .compilerOptionEntries = sessionOptions,
+        // The same goes here as above, this *should* be automated.
+        .compilerOptionEntryCount = 1,
+    };
+
+    Slang::ComPtr<slang::ISession> session;
+    if (SLANG_FAILED(slangGlobalSession->createSession(sessionDesc, session.writeRef()))) {
+        throw std::runtime_error("Failed to create slang session.");
+    }
+
+    slang::IModule *slangModule = nullptr;
+    {
+        Slang::ComPtr<slang::IBlob> diagnosticBlob;
+        slangModule = session->loadModuleFromSourceString("", "", code, diagnosticBlob.writeRef());
+        if (diagnosticBlob)
+            printf("%s", static_cast<const char *>(diagnosticBlob->getBufferPointer()));
+        if (!slangModule)
+            throw std::runtime_error("Failed to load slang module from source string.");
+    }
+
+    Slang::ComPtr<slang::IEntryPoint> entryPoint;
+    if (SLANG_FAILED(slangModule->findEntryPointByName(entryPointName, entryPoint.writeRef())))
+        throw std::runtime_error("Failed to find slang shader entry point.");
+
+    Slang::List<slang::IComponentType*> componentTypes;
+    componentTypes.add(slangModule);
+    componentTypes.add(entryPoint);
+
+    Slang::ComPtr<slang::IComponentType> composedProgram;
+    {
+        Slang::ComPtr<slang::IBlob> diagnosticBlob;
+        SlangResult result = session->createCompositeComponentType(componentTypes.getBuffer(), componentTypes.getCount(), composedProgram.writeRef(), diagnosticBlob.writeRef());
+        if (diagnosticBlob)
+            printf("%s\n", static_cast<const char*>(diagnosticBlob->getBufferPointer()));
+        if (SLANG_FAILED(result))
+            throw std::runtime_error("Failed to create slang composite component type.");
+    }
+
+    Slang::ComPtr<slang::IBlob> spirvCode;
+    {
+        Slang::ComPtr<slang::IBlob> diagnosticBlob;
+        constexpr int entryPointIndex = 0;
+        const SlangResult result = composedProgram->getEntryPointCode(entryPointIndex, 0, spirvCode.writeRef(), diagnosticBlob.writeRef());
+        if (diagnosticBlob)
+            printf("%s\n", static_cast<const char*>(diagnosticBlob->getBufferPointer()));
+        if (SLANG_FAILED(result))
+            throw std::runtime_error("Failed to get code entry point.");
+    }
+
+    const auto *ptr = reinterpret_cast<const uint8_t*>(spirvCode->getBufferPointer());
+    *outSPIRV = std::vector<uint8_t>(ptr, ptr + spirvCode->getBufferSize());
+}
+
+void Application::optimizeSPIRV(std::vector<uint8_t> *inoutSPIRV) {
+    spvtools::Optimizer optimizer(SPV_ENV_VULKAN_1_4);
+    optimizer.RegisterPerformancePasses();
+    optimizer.SetMessageConsumer([](spv_message_level_t level, const char*, const spv_position_t &, const char* msg) {
+        if (level <= SPV_MSG_WARNING)
+            printf("SPIRV-Opt: %s\n", msg);
+    });
+
+    std::vector<uint32_t> optimized;
+    if (!optimizer.Run(reinterpret_cast<const uint32_t *>(inoutSPIRV->data()), inoutSPIRV->size() / sizeof(uint32_t), &optimized))
+        throw std::runtime_error("Failed to run spirv-opt");
+
+    const auto *p = reinterpret_cast<const uint8_t*>(optimized.data());
+    inoutSPIRV->assign(p, p + optimized.size() * sizeof(uint32_t));
+}