Cross platform toy render engine supporting physically based rendering and hardware/software ray tracing
License: MIT License
Hi, I'm Simon. I study computer science at the Albert-Ludwigs University of Freiburg. In my freetime, I'm working on a cross platform render engine, the Atlas Engine. One thing that is particularly interesting to me is the scalability across multiple platforms (Android, Linux and Windows). I'm most interested in:
Issue is visible with a low amount of bounces (1). Might be the normals or the new ray directions/origin generated for the indirect lighting.
The shader compiler needs to take care of includes which might have extensions declared. For an example have a look into the shadow.hsh. Additionally constants might land in front of these extensions due to the processing in the shader compiler
Calculate a bias for every cascade taking the area of the shadow map into account
Currently, cmake configuration failed with:
$ cmake ..
-- Building for: Ninja
CMake Warning (dev) at CMakeLists.txt:13 (project):
cmake_minimum_required() should be called prior to this top-level project()
call. Please see the cmake-commands(7) manual for usage documentation of
both commands.
This warning is for project developers. Use -Wno-dev to suppress it.
-- The C compiler identification is GNU 12.2.0
-- The CXX compiler identification is GNU 12.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/msys64/mingw64/bin/cc.exe - 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: C:/msys64/mingw64/bin/c++.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenGL: opengl32
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
CMake Error at CMakeLists.txt:81 (find_package):
Could not find a package configuration file provided by "volk" with any of
the following names:
volkConfig.cmake
volk-config.cmake
Add the installation prefix of "volk" to CMAKE_PREFIX_PATH or set
"volk_DIR" to a directory containing one of the above files. If "volk"
provides a separate development package or SDK, be sure it has been
installed.
-- Configuring incomplete, errors occurred!
MSYS MINGW64 compiling AtlasEngine under Windows 11:
When I solve the above three problems, I can compile successfully, but there is an error during the linking process.
AtlasEngineEditor.dir/App.cpp.obj: in function `Atlas::Editor::App::SetupMainDockspace(unsigned int)':
Atlas-Engine/src/editor/App.cpp:320:(.text+0x9c6): undefined reference to `ImGui::SetWindowSize(ImVec2 const&, int)'
C:/Software/MSYS2/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Codes/GraphicsProj/Atlas-Engine/src/editor/App.cpp:321:(.text+0x9dc): undefined reference to `ImGui::SetWindowPos(ImVec2 const&, int)'
C:/Software/MSYS2/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Codes/GraphicsProj/Atlas-Engine/src/editor/App.cpp:323:(.text+0x9e3): undefined reference to `ImGui::DockBuilderRemoveNode(unsigned int)'
C:/Software/MSYS2/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Codes/GraphicsProj/Atlas-Engine/src/editor/App.cpp:324:(.text+0x9ec): undefined reference to `ImGui::DockBuilderAddNode(unsigned int, int)'
C:/Software/MSYS2/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Codes/GraphicsProj/Atlas-Engine/src/editor/App.cpp:327:(.text+0xa0f): undefined reference to `ImGui::DockBuilderSplitNode(unsigned int, int, float, unsigned int*, unsigned int*)'
C:/Software/MSYS2/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Codes/GraphicsProj/Atlas-Engine/src/editor/App.cpp:330:(.text+0xa40): undefined reference to `ImGui::DockBuilderDockWindow(char const*, unsigned int)'
....
Examples of this issue:
Jolt.lib(JobSystemThreadPool.cpp.obj) : error LNK2019: unresolved external symbol _Thrd_sleep_for referenced in function
"void __cdecl std::this_thread::sleep_until<struct std::chrono::steady_clock,class std::chrono::duration<__int64,struct std::ratio<1,1000000000>>>(class std::chrono::time_point<struct std::chrono::steady_clock,class std::chrono::duration<__int64,struct std::ratio<1,1000000000>>> const & ...
IDE :CLion, Compiler: MSVC, OS:Windows11,
There are also issues on geometry edges where a low resolution shadow map leads to incorrect results. Only happens when the filtering is set to GL_LINEAR and hardware pcf is used.
You are unable to retrieve characters that are dependent on multiple keys being pressed.
E.g. (On qwertz keyboard layout) ! is achieved by pressing Shift and 1.
There seems to be an energy loss when using DDGI. Further investigation is required
Dear Simon,
I am reaching out to ensure that my previous email reached you.
I've decided to create a new issue here so that others may also benefit from the discussion of this topic.
Thank you for your attention, and I look forward to your guidance.
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