Introduction

This engine originally followed the tutorial series: Vulkan (c++) Game Engine Tutorials This engine has since surpassed it's scope.

Intending to create a differed renderer with a universal ray marcher. The pipeline will be defined as follows: Objects -> Volumetrics -> Lighting -> Post-Proccessing -> UI I'm thinking UI should actually be first, no?

Features w/ Sources

Textures

Sources:

• https://vulkan-tutorial.com/Texture_mapping/Images
• https://vkguide.dev/docs/chapter-5/drawing_images/
• https://www.youtube.com/watch?v=lbaHrocxQdM

Textures were originally binded as a global array, but are now binded per object.

I am looking into a more involved material system with multiple masks for things like:

• Albedo
• AO
• Bump
• Cavity
• Displacement
• gloss
• Normal
• Roughness
• Specular
• Transmission

MultiSampling anti-aliasing

Sources:

• https://vulkan-tutorial.com/Multisampling

Screenshots

Sources:

• https://github.com/SaschaWillems/Vulkan/blob/master/examples/screenshot/screenshot.cpp
• https://reference.torque3d.org/coding/file/swizzle_8h/

Not a very useful or optimized system, but I learned something. Also, If the image seems very blue, It's because it BGR instead of RGB and I cant be bothered to fix it.

Physics engine

Sources:

• https://www.realtimerendering.com/intersections.html

• https://www.youtube.com/watch?v=eED4bSkYCB8&t=62s

• I discovered Nvidia Physx, but I dont think I can implement it without completely transitioning to visual studio and I dont want to do that. However I think I can use it's documentation to help me out:

  • https://gameworksdocs.nvidia.com/PhysX/4.0/documentation/PhysXGuide/Manual/Index.html
  • http://blog.virtualmethodstudio.com/2017/11/physics-101-3-solvers/

Fun Finds

• https://www.youtube.com/watch?v=eED4bSkYCB8

• https://www.youtube.com/watch?v=ajv46BSqcK4

• https://www.youtube.com/watch?v=h7apO7q16V0

• https://www.khronos.org/collada/

• http://web.mit.edu/djwendel/www/weblogo/shapes/

• https://www.saschawillems.de/blog/2018/09/05/vulkan-conditional-rendering/

• https://www.saschawillems.de/blog/2016/08/13/vulkan-tutorial-on-rendering-a-fullscreen-quad-without-buffers/

• https://vcpkg.io/en/

• https://www.alexhyett.com/stack-vs-heap-memory/

• https://www.youtube.com/watch?v=NRnj_lnpORU

• https://jose-villegas.github.io/post/deferred_voxel_shading/

Tasks

TO DO:

• shadows
• skybox
  Going for volumetric atmosphere, turns out that is very hard.
• ECS
• UI Going to use imgui for tooling UI to make the traisition for hardcoded objects to loaded files easier.
• Sound
• Physics
  I'm taking a break from physics to do clouds
• Asset System
• CVAR System

Atmosphere and clouds

Sources:

• https://www.youtube.com/watch?v=8OrvIQUFptA
• horizon: zero dawn has a lot of info
  • https://www.youtube.com/watch?v=ToCozpl1sYY

wtf is 'dithering' wtf is a kilometer

• https://sebh.github.io/publications/egsr2020.pdf
• http://evasion.imag.fr/~Antoine.Bouthors/research/phd/
• https://github.com/sebh/UnrealEngineSkyAtmosphere
• https://advances.realtimerendering.com/s2019/index.htm

Vulkan descriptors and memory bullshit

Turns out, I could/should set up an arbitrary-ish amount of discriptor sets based on how frequently they change. eg. per camera, per object, per frame.

• https://www.reddit.com/r/vulkan/comments/4gvmus/best_way_for_textures_in_shaders/
  first comment knows whats up ^

• https://stackoverflow.com/questions/42214710/vkallocatedescriptorsets-returns-vk-out-of-host-memory

These types are apparently very useful, but lacks proper hardware support so it would only make things more difficult in the end.

• Descriptor indexing
• Push descriptors
• bindless descriptors
• dynamic UBO's

Vulkan resources

This is becoming more and more useful: https://vulkan.gpuinfo.org/displayreport.php?id=25342#formats_optimal built in variables for frag shaders: https://www.khronos.org/opengl/wiki/Fragment_Shader

Dependancies

• Vulkan SDK
• stb - https://github.com/nothings/stb
• glfw - https://github.com/glfw/glfw
• glm - https://github.com/g-truc/glm
• tinyobjloader - https://github.com/tinyobjloader/tinyobjloader
• imgui - https://github.com/ocornut/imgui.git