LearnOpenGL.FSharp

Exercises based on the https://learnopengl.com/ tutorials, using F# and SILK.NET as the OpenGL wrapper. Each title title with a link is pointing to the original chapter from the learnopengl.com site on which the theory is explained and all of the math is being copied from.

This repo can be useful if you are following the excelent tutorials on your own and get stuck on some of them (pointer manipulation is a bitch), but please note that this code is not supposed to set any guideline about how you should structure your own projects. It´s just the result of me trying to learn OpenGL, F#, FRP and functional programming in general, so expect the code to be suboptimal at best.

Also note that the 'Galante' library i wrote here is just a set of helpers i needed along the way and will need a complete refactor once i have a better understanding about OpenGl, but that´s not likely to happen within this repo.

From exercise 47 and onward, DearImGui is used to display an informative overlay, but this seems to be working only in my PC for some reason. I don't know what's going on (might be driver related) but I'll try to get it to work properly.

Getting started
- Hello window (Original article)
  - 01_Window
- Hello triangle (Original article) and Shaders (Original article)
  - 02_Triangle
  - 03_Quad
- Textures (Original article)
- Transformations (Original article)
  - 07_Transformations
- Coordinate systems (Original article)
- Camera (Original article)
  - 12_Camera_Automove
  - 13_Camera_Walk_Around_With_Inputs
Lighting
- Colors (Original article)
  - 14_A_Lighting_Scene
- Basic lighting (Original article)
- Materials (Original article)
- Lighting maps (Original article)
- Light casters (Original article)
- Multiple lights (Original article)
  - 27_Multiple_Lights
Model loading
- Model loading (Original article)
  - 28_Model_Loading
Advanced OpenGL
- Depth testing (Original article)
  - 29_Visualizing_The_Depth_Buffer
- Stencil testing (Original article)
  - 30_Stencil_Testing
- Blending (Original article)
  - 31_Discarding_Fragments
  - 32_Blending
- Face culling (Original article)
  - 33_Face_Culling
- Framebuffers (Original article)
  - 34_Rendering_To_A_Texture
  - 35_PostProcessing_Kernel_Effects
- Cubemaps (Original article)
- Advanced data (Original article)
  - No visual representation.
- Advanced GLSL (Original article)
- Geometry shader (Original article)
- Instancing (Original article)
  - 45_Instancing
- Anti aliasing (Original article)
  - 46_Antialiasing
Advanced lighting
- Advanced lighting (Original article)
  - 47_Blinn_Phong
- Gamma correction (Original article)
  - 48_Gamma_Correction
- Shadow mapping (Original article)
  - 49_Shadow_Mapping
- Point shadows (Original article)
  - Coming soon.
- Normal mapping (Original article)
  - Coming soon.
- Parallax mapping (Original article)
  - Coming soon.
- HDR (Original article)
  - Coming soon.
- Bloom (Original article)
  - Coming soon.
- Deferred shading (Original article)
  - Coming soon.
- SSAO (Original article)
  - Coming soon.
PBR (physically based rendering)
- Lighting (Original article)
  - Coming soon.
- IBL - Image Based Lighting - Diffuse irradiance (Original article)
  - Coming soon.
- IBL - Image Based Lighting - Specular IBL (Original article)
  - Coming soon.
In practice
- Coming soon.

Getting started

Hello window

01_Window

Hello triangle + Shaders

02_Triangle

03_Quad

Textures

04_Quad_Texture

05_Quad_Texture_Colored

06_Quad_Texture_Double

Transformations

07_Transformations

This one looks kind of weird because the images are not centered vertically, the intention is to be forced to realize that rotations in OpenGL are calculated taking the origin as the rotation center (and not the object's center) and if a rotation of an object is needed around itself, then said object must be translated to the origin, rotated and then translated back to it's initial position, which may be somewhat counterintuitive.

Coordinate systems

08_Coordinate_Systems_Perspective

09_Coordinate_Systems_Cube

10_Coordinate_Systems_Cube_With_Depth_Testing

11_Coordinate_Systems_Many_Cubes

Camera

12_Camera_Automove

13_Camera_Walk_Around_With_Inputs

Lighting

Colors

14_A_Lighting_Scene

Basic Lighting

15_Phong_Ambient_Lighting

16_Phong_Diffuse_Lighting

17_Phong_Specular_Lighting

Note how the reflection of the light moves on each face of the cube when the camera moves.

Materials

18_Setting_Materials

19_Light_Properties

20_Different_Light_Colors

Lighting maps

21_Diffuse_Maps

22_Specular_Maps

23_Emission_Maps

Light casters

24_Directional_Light

25_Point_Light

Note that although this light source looks similar as in the previous examples, this time it's not reaching the objects that are too far away from it, giving a more realisting feel to the source.