ptvc24-ascent

Trailer (YouTube)

Info

When extracting the assets.zip archive make sure the directory strucucture is as follows:

/Ascent.exe
/README.md
/LICENSE
/assets/fonts/...
/assets/models/...
/assets/shaders/...
/assets/textures/...

Requirements

Opengl 4.5, Windows 64bit

Controls

Click to focus the window. Escape to release the focus.
Use mouse to look.

The FreeCam™ mode uses WASD movement and the scrolling to change speed.

Arguments

• --enable-compatibility-profile
  Enables the OpenGL compatability profile

• --enable-gl-debug
  Enables the OpenGL debug callback. Always enabled in debug builds.

Noteworthy Features

• Modern OpenGL

  • DSA
    https://www.khronos.org/opengl/wiki/Direct_State_Access
  • Separate Programs / Shader Pipelines
    https://www.khronos.org/opengl/wiki/Shader_Compilation#Separate_programs
  • Indirect rendering
    https://www.khronos.org/opengl/wiki/Vertex_Rendering#Indirect_rendering
  • Immutable Storage
    https://www.khronos.org/opengl/wiki/Buffer_Object#Immutable_Storage
  • Explicit uniform locations
    https://www.khronos.org/opengl/wiki/Layout_Qualifier_(GLSL)#Explicit_uniform_location
  • Separate attribute format
    https://www.khronos.org/opengl/wiki/Vertex_Specification#Separate_attribute_format

• Material Batching
  Read more

• GLTF Loading
  https://github.com/syoyo/tinygltf

• Jolt Physics
  https://github.com/jrouwe/JoltPhysics

• Physically Based Shading with IBL
  https://google.github.io/filament/Filament.html#materialsystem
  https://learnopengl.com/PBR/Theory

• Reversed Depth, Infinite Projection Matrix
  https://nlguillemot.wordpress.com/2016/12/07/reversed-z-in-opengl/
  https://web.archive.org/web/20220916052250/http://dev.theomader.com/depth-precision/
  https://developer.nvidia.com/content/depth-precision-visualized
  https://www.danielecarbone.com/reverse-depth-buffer-in-opengl/
  https://www.terathon.com/gdc07_lengyel.pdf

• Blender as Level Editor
  Objects can be placed and configured in blender.

Other Features

Nuklear UI

https://github.com/Immediate-Mode-UI/Nuklear

Used for menus and ui

Dear ImGui

https://github.com/ocornut/imgui

Used for debug ui

AgX display mapping (tone mapping)

https://www.shadertoy.com/view/dtSGD1
https://www.shadertoy.com/view/cd3XWr
https://github.com/sobotka/AgX

Also used by blender (4.0+).

Development

When adding .cpp or .h files run ./make rebuild to rebuild the cmake configuration.

Special Thanks

Special thanks to my (Wendelin) friend Boris Laaha for creating the awesome music.