[jak 2] ETIE (#2326)

Definitely needs a clean up pass, but I think the functionality is very
close.

There's a few "hacks" still:
- I am using the emerc logic for environment mapping, which doesn't care
about the length of the normals. I can't figure out how the normal
scaling worked in etie. I want to do a little bit more experimentation
with this before merging.
- There is some part about adgifs for TIE and ETIE that I don't
understand. The clearly correct behavior of TIE/ETIE is that the alpha
settings from the adgif shader are overwritten by the settings from the
renderer. But I can't figure out how this happens in all cases.
- Fade out is completely disabled. I think this is fine because the
performance difference isn't bad. But if you are comparing screenshots
with PCSX2, it will make things look a tiny bit different.

test/decompiler/test_VuDisasm.cpp

@@ -107,6 +107,13 @@ TEST(VuDisasm, Tie_Jak2) {
   EXPECT_EQ(disasm.to_string(prog), get_expected("jak2/tie"));
 }
 
+TEST(VuDisasm, etie_Jak2) {
+  auto data = get_test_data("jak2/etie-vu1");
+  VuDisassembler disasm(VuDisassembler::VuKind::VU1);
+  auto prog = disasm.disassemble(data.data(), data.size() * 4, false);
+  EXPECT_EQ(disasm.to_string(prog), get_expected("jak2/etie-vu1"));
+}
+
 TEST(VuDisasm, SpriteDistort) {
   auto data = get_test_data("sprite-distort");
   VuDisassembler disasm(VuDisassembler::VuKind::VU1);
@@ -146,7 +153,6 @@ TEST(VuDisasm, ForegroundVu0_Jak2) {
   auto data = get_test_data("jak2/foreground-vu0");
   VuDisassembler disasm(VuDisassembler::VuKind::VU0);
   auto prog = disasm.disassemble(data.data(), data.size() * 4, false);
-  // fmt::print("{}\n", disasm.to_string(prog));
   EXPECT_EQ(disasm.to_string(prog), get_expected("jak2/foreground-vu0"));
 }