should prob put this on git sometime

cmake/compile_shaders.cmake

@@ -0,0 +1,27 @@
+function(compile_glsl_to_spv target shader_src_dir shader_out_dir out_var)
+    find_program(GLSLC glslc REQUIRED)
+
+    file(GLOB_RECURSE SHADERS
+            "${shader_src_dir}/*.vert"
+            "${shader_src_dir}/*.frag"
+            "${shader_src_dir}/*.comp"
+    )
+
+    set(SPV_OUTPUTS "")
+    foreach(shader ${SHADERS})
+        file(RELATIVE_PATH rel "${shader_src_dir}" "${shader}")
+        set(out "${shader_out_dir}/${rel}.spv")
+
+        add_custom_command(
+                OUTPUT "${out}"
+                COMMAND ${CMAKE_COMMAND} -E make_directory "$<PATH:GET_PARENT_PATH,${out}>"
+                COMMAND ${GLSLC} -o "${out}" "${shader}"
+                DEPENDS "${shader}"
+                VERBATIM
+        )
+        list(APPEND SPV_OUTPUTS "${out}")
+    endforeach()
+
+    add_custom_target(${target}_shaders ALL DEPENDS ${SPV_OUTPUTS})
+    set(${out_var} ${SPV_OUTPUTS} PARENT_SCOPE)
+endfunction()