TODO.md

TODOs

Features

• P0: Update README / documentation
• P1: Replace model via imgui menu
• P1: Change orbit point
• P1: Add skeletal animation https://learnopengl.com/Guest-Articles/2020/Skeletal-Animation
• P1: Implement tessellation
• P1: Implement material system
• P1: Add parallax mapping
• P1: Implement point light shadow maps: https://learnopengl.com/Advanced-Lighting/Shadows/Point-Shadows
• P1: Add profiler (easy_profiler?)
• P1: Add screen space reflections
• P2: Implement Light volumes
• P2: Implement CSM: https://learnopengl.com/Guest-Articles/2021/CSM
• P2: Don't store positions in the G-Buffer: https://mynameismjp.wordpress.com/2010/09/05/position-from-depth-3/
• P2: Implement virtual textures. http://holger.dammertz.org/stuff/notes_VirtualTexturing.html
• P2: Add a scene graph. https://learnopengl.com/Guest-Articles/2021/Scene/Scene-Graph
• P2: Expose scene graph in model_render UI
• P2: Implement frustum culling. https://learnopengl.com/Guest-Articles/2021/Scene/Frustum-Culling
• P2: Consider supporting uniform buffer objects. https://learnopengl.com/Advanced-OpenGL/Advanced-GLSL
• P2: Go through some of the shader effects from https://lettier.github.io/3d-game-shaders-for-beginners/index.html
• P2: Add automatic exposure: https://bruop.github.io/exposure/
• P3: Add env map lighting support. https://learnopengl.com/Advanced-OpenGL/Cubemaps
• P3: Area lights https://learnopengl.com/Guest-Articles/2022/Area-Lights
• P3: Tons of shadow map improvements described here: https://docs.microsoft.com/en-us/windows/win32/dxtecharts/common-techniques-to-improve-shadow-depth-maps
• P4: Add weighted, blended order-independent transparency (http://casual-effects.blogspot.com/2015/03/implemented-weighted-blended-order.html)

Cleanup

• P1: Model loading is sometimes slow
• P2: Add a logging system, and log e.g. invalid glGetUniformLocation() calls
• P2: Remove some duplication from light class impl
• P3: Add a mechanism to set #define's in the shader

Examples

• Lighting demo (light types, spotlight)
• Stencil buffer demo
• Blending (alpha transparency) demo

Bugs

• P2: light registry doesn't work with >1 shaders.
• P2: debug normals are modified based on camera rotation. Maybe just a visual artifact?

Done

• Bug: debug normal disappear in weird ways.
• Add a way to load shader code from a string (with import support).
• Add deltaTime uniforms, etc
• Add support for the stencil buffer
• Add a mechanism to enable/disable depth testing
• Add a 'window' class to qrk that can encapsulate the calls in the render loop.
• Add some depth-related shader functions
• Shading doesn't look quite right
• Fix model textures.
• getViewMatrix -> getViewTransform
• Figure out what's going on with double-free.
• Add a 'light' class that can work with the shader.
• Add caching for shader loader.
• Add an abstraction over shader code, allowing e.g. imports / usage.
• Add exception hierarchy.
• Add an auto-formatter for the GLSL code.
• Include attenuation in the lighting model.
• Add lighting support to qrk, allowing:
  • Directional lights
  • Point lights
  • Spotlight lights
• Switch to using .vert and .frag for shader extensions.
• use/unuse -> activate/deactive.
• Add clang-tidy.
• Reprioritize TODOs :o)
• P0: Add a mechanism for working with textures.
• Add skybox support.
• Add compute shaders.
• P0: Implement blinn phong
• P0: Add shadow mapping
• P0: Add normal mapping
• P1: Add HDR
• P3: Add support for framebuffers?
• P2: Add a texturemap class that can maintain diffuse/specular maps, similar to the light class.
• P1: Add Bloom
• P0: model loader doesn't honor transforms
• P3: Add instancing to model?
• P0: Implement deferred shading
• P2: Add dynamic UI support, a la https://github.com/ocornut/imgui
• P0: Orbit controls
• P0: Implement SSAO
• P0: Physically based bloom: https://learnopengl.com/Guest-Articles/2022/Phys.-Based-Bloom
• P0: Implement PBR lighting
• P0: Create PBR example
• P0: Implement PBR texture maps
• P0: Add support for AO maps
• P0: Banding in specular when using GL_RGBA16F with deferred shading
• P3: Add a wireframe mode.
• P0: Emissive textures have artifacts at close range
• P0: Model render features
  • Rotate/scale
  • Camera mode
  • Ambient color controls
  • Directional light color / position / etc controls
  • Switch to deferred?
  • Display deferred render buffers
  • Add PBR
  • Add bloom
  • Emission strength
  • Tone mapping options
  • Gamma correct
  • Add shadow mapping
  • Add shadow map params
  • Add shadow map vis
  • Add SSAO
• P0: Add FXAA
• P1: Add #pragma once for shaders
• P0: Implement IBL (image based lighting)
• P0: Model scaling controls