Draw the client's scene in the renderer process

The adapter records everything the client draws (state, transforms, lights, fog, textures and buffers) as a command stream, sent in chunks through the shared memory channel, while IMVU's Direct3D renderer still draws the whole view. The renderer process draws it with Diligent, with shaders reproducing IMVU's Direct3D 9 fixed-function setup, over the right half of the 3D view to compare. It skips to the newest frame when it falls behind, and logs its errors and frame times.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

tests/CMakeLists.txt

@@ -1,3 +1,7 @@
 add_executable(shared_ptr_test shared_ptr_test.cpp)
 target_link_libraries(shared_ptr_test PRIVATE t5de::imvu t5de::options)
 add_test(NAME shared_ptr COMMAND shared_ptr_test)
+
+add_executable(protocol_test protocol_test.cpp)
+target_link_libraries(protocol_test PRIVATE t5de::protocol t5de::options)
+add_test(NAME protocol COMMAND protocol_test)