I need help compiling GLSL with Slang please.

[Please-just-dont]

Hello, I was wondering if someone could help me. I try to use the Slang compiler to compile GLSL with:

slangc -o TempShaderOutputFile.spv -lang glsl -target spirv temp_shader_src_file.glsl

This compiled fine with glslc compiler, but with slangc I get:

layout(set = 0, binding = 1) uniform sampler samplers[];
                                     ^~~~~~~
temp_shader_src_file.glsl(86): error 30013: no subscript operation found for type 'overload group'
layout(set = 0, binding = 0) uniform texture2D textures[];
                                                        ^

I'm wondering what I have to do to compile this. 'sampler' is a valid keyword in GLSL. I'm trying to compile to SPIRV for Vulkan.

[juliusikkala]

Looks like these two types (sampler and texture2D) aren't currently supported in the GLSL syntax for Slang. Do note that the GLSL support in the Slang compiler exists to make it easier to port existing GLSL codebases to Slang; the primary goal isn't to be an alternate GLSL compiler. One nice thing about this is that you can port your code to Slang one part at a time. In this case, you should be able to swap in SamplerState and Texture2D.

All that said, it's always nice to have it working with more GLSL in the wild. At least one difficulty in this specific case is that in modern GLSL, texture2D is both a deprecated function and a (non-deprecated) type, so it may be difficult to support without the compiler bending over backwards. Mapping sampler to SamplerState shouldn't be too difficult.