MSL: Fix type redirection when struct members are reordered to align with offsets.

Populate member_type_index_redirection as reverse lookup, not forward lookup.
Move use of member_type_index_redirection from CompilerMSL::to_member_reference()
to CompilerGLSL::access_chain_internal() to access all redirected type info,
not just name.

1 files changed, 32 insertions, 0 deletions

diff --git a/reference/opt/shaders-msl/vert/uniform-struct-out-of-order-offests.vert b/reference/opt/shaders-msl/vert/uniform-struct-out-of-order-offests.vert
new file mode 100644
index 00000000..c69775e3
--- /dev/null
+++ b/reference/opt/shaders-msl/vert/uniform-struct-out-of-order-offests.vert
@@ -0,0 +1,32 @@
+#include <metal_stdlib>
+#include <simd/simd.h>
+
+using namespace metal;
+
+struct data_u_t
+{
+    int4 m1[3];
+    uint m3;
+    uint3 m2;
+    int4 m0[8];
+};
+
+struct main0_out
+{
+    float foo [[user(locn0)]];
+    float4 gl_Position [[position]];
+};
+
+struct main0_in
+{
+    float4 vtx_posn [[attribute(0)]];
+};
+
+vertex main0_out main0(main0_in in [[stage_in]], constant data_u_t& data_u [[buffer(0)]])
+{
+    main0_out out = {};
+    out.gl_Position = in.vtx_posn;
+    out.foo = float((uint3(data_u.m1[1].xyz) + data_u.m2).y * uint(data_u.m0[4].x));
+    return out;
+}
+