[SS:TSE\TFE] Having problems after compiling the game for RISC-V

[Architector120]

Hi, I'm trying to compile a game for a new board (Milk-V Jupiter) with a RISC-V SpacemiT K1 CPU.
Yes, I know this architecture is not currently supported by the game, but I still managed to compile it by making a few changes to the code. And as a result, after loading the game I get a black screen... what might be the cause?

Changes I made to the code to make it compile:

diff --git a/Sources/CMakeLists.txt b/Sources/CMakeLists.txt
index 72a25a5..9e3fde5 100755
--- a/Sources/CMakeLists.txt
+++ b/Sources/CMakeLists.txt
@@ -107,0 +108,3 @@ if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID STREQUAL "Clang" OR CMAKE_C_CO
+       if(CMAKE_SYSTEM_PROCESSOR MATCHES "riscv64")
+               add_compile_options(-march=rv64gcv)
+       endif()

diff --git a/Sources/Engine/Base/Types.h b/Sources/Engine/Base/Types.h
index e8dc080..d713892 100755
--- a/Sources/Engine/Base/Types.h
+++ b/Sources/Engine/Base/Types.h
@@ -68 +68 @@ typedef uint32_t UINT;
-    || defined(_M_IA64) || defined(__IA64__) || defined(__e2k__)
+    || defined(_M_IA64) || defined(__IA64__) || defined(__e2k__) || defined(__riscv)

Without the changes shown above, I get an error at the beginning of compilation:

architector120@milkv-jupiter:~/build/Serious-Engine/Sources$ ./build-linux64.sh
Will build with 'make -j2' ... please edit this script if incorrect.
+ rm -rf cmake-build
+ mkdir cmake-build
+ cd cmake-build
+ cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo ..
-- The C compiler identification is GNU 13.2.0
-- The CXX compiler identification is GNU 13.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Found SDL2: /usr/lib/riscv64-linux-gnu/libSDL2main.a;/usr/lib/riscv64-linux-gnu/libSDL2.so
-- Found ZLIB: /usr/lib/riscv64-linux-gnu/libz.so (found version "1.3.1")
-- Using assembler code (when available)
-- Not using i386 nasm ASM
-- Configuring done (2.8s)
-- Generating done (0.5s)
-- Build files have been written to: /home/architector120/build/Serious-Engine/Sources/cmake-build
+ echo 'ECC first'
ECC first
+ make ecc
[  0%] Generating /home/architector120/build/Serious-Engine/Sources/Ecc/Scanner.cpp
[  0%] Generating /home/architector120/build/Serious-Engine/Sources/Ecc/Parser.cpp, /home/architector120/build/Serious-Engine/Sources/Ecc/Parser.hpp
Parser.y: warning: 86 shift/reduce conflicts [-Wconflicts-sr]
Parser.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
Parser.y: note: rerun with option '-Wcounterexamples' to generate conflict counterexamples
Parser.y:386.4: warning: rule useless in parser due to conflicts [-Wother]
  386 |   : /* null */
      |    ^
[  0%] Generating /home/architector120/build/Serious-Engine/Sources/Ecc/Parser.h
[  0%] Building CXX object Ecc/CMakeFiles/ecc.dir/Main.cpp.o
c++: error: ‘-march=native’: ISA string must begin with rv32 or rv64
make[3]: *** [Ecc/CMakeFiles/ecc.dir/build.make:91: Ecc/CMakeFiles/ecc.dir/Main.cpp.o] Error 1
make[2]: *** [CMakeFiles/Makefile2:268: Ecc/CMakeFiles/ecc.dir/all] Error 2
make[1]: *** [CMakeFiles/Makefile2:275: Ecc/CMakeFiles/ecc.dir/rule] Error 2
make: *** [Makefile:247: ecc] Error 2

After compiling and adding the compiled binaries to the Steam version of the game. I launched it, and stuck on black screen with music playing in background after the game fully load...
I pressed Enter several times, and the game tries to load the first level and hangs on an endless loading screen...

Here is the console output:

rchitector120@milkv-jupiter:~/Games/Serious Sam Classic The Second Encounter$ ./Bin/ssam 
STUBBED: load window icon in /home/architector120/build/Serious-Engine/Sources/SeriousSam/MainWindow.cpp, line 168.
STUBBED: Need SDL invisible window or something in /home/architector120/build/Serious-Engine/Sources/SeriousSam/MainWindow.cpp, line 327.
STUBBED: !!! FIXME: get the code back in from Ryan's original port. in /home/architector120/build/Serious-Engine/Sources/Engine/Base/Stream.cpp, line 921.
STUBBED: co-opt the existing T-buffer support for multisampling? in /home/architector120/build/Serious-Engine/Sources/Engine/Graphics/SDL/SDLOpenGL.cpp, line 113.
STUBBED: this can't possibly be right, yeah? in /home/architector120/build/Serious-Engine/Sources/Engine/Base/SDL/SDLEvents.cpp, line 152.
STUBBED: Not 64-bit clean in /home/architector120/build/Serious-Engine/Sources/EntitiesMP/Player.es, line 6561.

I think my case is similar to this issue #64. any ideas?

[ptitSeb]

I have some risc-v machine, I need to try on my side to debug. It's been a long time since I worked on that engine, I need to refresh my memory...