glsl.entryPointRename.vert
ERROR: Source entry point must be "main"

// Module Version 10000
// Generated by (magic number): 8000a
// Id's are bound by 20

                              Capability Shader
               1:             ExtInstImport  "GLSL.std.450"
                              MemoryModel Logical GLSL450
                              EntryPoint Vertex 4  "foo" 13
                              Source GLSL 460
                              Name 4  "foo"
                              Name 11  "gl_PerVertex"
                              MemberName 11(gl_PerVertex) 0  "gl_Position"
                              MemberName 11(gl_PerVertex) 1  "gl_PointSize"
                              MemberName 11(gl_PerVertex) 2  "gl_ClipDistance"
                              MemberName 11(gl_PerVertex) 3  "gl_CullDistance"
                              Name 13  ""
                              MemberDecorate 11(gl_PerVertex) 0 BuiltIn Position
                              MemberDecorate 11(gl_PerVertex) 1 BuiltIn PointSize
                              MemberDecorate 11(gl_PerVertex) 2 BuiltIn ClipDistance
                              MemberDecorate 11(gl_PerVertex) 3 BuiltIn CullDistance
                              Decorate 11(gl_PerVertex) Block
               2:             TypeVoid
               3:             TypeFunction 2
               6:             TypeFloat 32
               7:             TypeVector 6(float) 4
               8:             TypeInt 32 0
               9:      8(int) Constant 1
              10:             TypeArray 6(float) 9
11(gl_PerVertex):             TypeStruct 7(fvec4) 6(float) 10 10
              12:             TypePointer Output 11(gl_PerVertex)
              13:     12(ptr) Variable Output
              14:             TypeInt 32 1
              15:     14(int) Constant 0
              16:    6(float) Constant 1065353216
              17:    7(fvec4) ConstantComposite 16 16 16 16
              18:             TypePointer Output 7(fvec4)
          4(foo):           2 Function None 3
               5:             Label
              19:     18(ptr) AccessChain 13 15
                              Store 19 17
                              Return
                              FunctionEnd