Simple C++ Rendering Engine from scratch for learning purposes. (windows/opengl based only for now)

- Clone, submodule init then update.
- Add QT5_DIR as an enviroment variable points to the directory that has Qt5Config.cmake, for example : "C:/Qt/5.14.1/msvc2017_64/lib/cmake/Qt5"
- Add QT5 bin folder path to "Path" enviroment variable

TODO :

• remove GLUT ✔
• remove prebuilt glew binaries ✔
• cmake ✔
• renderdoc ✔
• fix pbr new bug after refactor, diff roughness ✔
• hide renderers impl inside and clean the interface ✔
• get samplers in ✔
• create internal handle for gl objects ✔
• propagate samplers in rendereres ✔
• fix rotation + movement events bug ✔
• add imGui and interact ✔
• add fmt ✔
• get QT in ✔
• blend QT windowing with painter ✔
• add ECS ✔
• fix crash at closing ✔
• get the rest of renderers back to use ECS ✔
• point light ✔
• spot light ✔
• attach spot light to camera ✔
• add systems ✔
• move all renderers to renderering systems ✔
• remove unnecessary data transformations, no need to link renderers to ecs ✔
• find a good way for communications and relations between components (unity scripts) ✔
• add camera sys ✔
• propagate different lights to pbr ✔
• add light entities ✔
• point renderer ✔
• fix point renderer bug (the points show in rdoc only which is weird) ✔
• render light source as shinny point with radius ✔
• fix zooming bug ✔
• line renderer ✔
• virtual tiles ground ✔
• hiddenline mode ✔
• emit line strip only when face is ccw ✔
• mesh picking ✔
• moving picked meshes ✔
• selection manager ✔
• orbiting camera ✔
• Textured quad ✔
• fix postprocessing bug (input texture is bound as the result outprocessing texture, you dumb)
• 3d objects outlines
• Fix PBR distortion bug (happened after camera orbiral change commit : https://github.com/AbdelrhmanIbrahim/rendering/commit/1138169c966fd829c145cfd172d17c5601d78ae1, revert camera_view_matrix() and bug fixed but figure out why)
• application state (e.g. Picking state)
• load obj textured models, check assimp impl
• normal mapping
• read more about material systems (shading models impl chp 5 in rtr + unreal blueprint)
• deferred shading
• improve PBR + maps usage
• shadows
• SSAO
• parallex mapping or relief mapping (raymarching)
• OI and OD transparency like weighted average or depth peeling (nvidia bookmark and https://m.habr.com/en/post/457292/)
• continue in real time rendering book
• MSAA enable when needed
• we do alot of fetching then uploading data to gpu even if there's no change to the data (do some kind of lazy updating)
• slerp (https://www.geometrictools.com/Documentation/FastAndAccurateSlerp.pdf)
• make the tiles ground infinite
• visualize mesh normals and point clouds with geometry shader
• imporve hiddenline visualization, check its geometry shader comments
• small profiling shows swapbuffer waiting take much time, read more about this and vsync
• lazy main loop update for input events and comparing ecs worlds in case of changing data internally
• make a shadow renderer only that outputs a texture with shadows then merge it later
• propagate uniform blocks to phong_shadow
• if we don't need exceptions, disable them
• fix imgui input handling bug
• realtime GI (global illumination)
• main loop indpendent frame rate
• compute shaders
• space partitioning
• view frustm culling
• resources file format
• terrian deformation
• fluid/water/particle system simulation (read Fluid Engine Development book)
• cloud rendering
• rigid body dynamics
• mesh destruction
• animation