SPIRV Replace

Usage: SPIRVReplace.exe [input-file] [entrypoint]

Command line batch file program written in C# for compiling single stage GLSL shader files into SPIRV bytecode and then updating the entrypoint with SPIRV bytecode from "main" to [entrypoint].

All output files will be new SPIRV bytecode file ending with *.spv.

For example:

 > SPIRVReplace.exe sample.frag frag_func
 >> 
 >> Output file: sample.frag.spv

Later on, you would supply "frag_func" as the stage's pName into Vulkan's VkPipelineShaderStageCreateInfo when create a new pipeline.

typedef struct VkPipelineShaderStageCreateInfo {
    VkStructureType                     sType;
    const void*                         pNext;
    VkPipelineShaderStageCreateFlags    flags;
    VkShaderStageFlagBits               stage;
    VkShaderModule                      module;
    const char*                         pName;
    const VkSpecializationInfo*         pSpecializationInfo;
} VkPipelineShaderStageCreateInfo;

IMPLEMENTATION

1. Compile GLSL code into SPIRV bytecode via glslangValidator.exe
2. Disassembly SPIRV bytecode into AST representation via SPIRV-dis.exe
3. Perform search-and-replace on AST to change "main" to "[entrypoint]" (i.e. in quotes)
4. Reassembly SPIRV bytecode from AST representation via SPIRV-as.exe

BUILD

Run Visual Studio solution in SPIRVReplace folder

FOLDERS

SPIRVReplace/

• Copyright (c) 2016 David Young under MIT License

ThirdParty/

• Source code for glslangValidator.exe, SPIRV-dis.exe, SPIRV-as.exe. LICENSE included.

Bin

Windows assemblies

TOOLS INVOLVED

WINDOWS

glslangValidator.exe

Found in Bin/Bin32 folders of the WINDOWS version of LunarG Vulkan SDK v1.0.30

SPIRV-dis.exe

Found in Bin/Bin32 folders of the WINDOWS version of LunarG Vulkan SDK v1.0.30

SPIRV-as.exe

Found in Bin/Bin32 folders of the WINDOWS version of LunarG Vulkan SDK v1.0.30

LINUX / OTHER

Try modifying the .config found in the Bin folder to use linux version of these assemblies