LuaJIT FFI GLFW/OpenGL triangle from scratch


Summary

The video demonstrates setting up OpenGL compatibility with Lua using Luigi FFI, focusing on error handling and functionality implementation. It covers initializing a GLFW window, event handling, and enabling features like transparency. Key OpenGL functions such as GL clear and GL color are used to draw a triangle on a transparent framebuffer. Overall, the tutorial serves as a comprehensive guide for working with OpenGL functionalities in Lua.


Introduction to OpenGL Compatibility Triangle

Setting up OpenGL compatibility triangle using Luigi FFI with a string and library name declaration.

Creating Meta Table

Creating a meta table to wrap table elements for user data and library prefix in Lua.

Setting Error Callback

Defining and setting an error callback function using Lua's FFI to handle errors in OpenGL functionalities.

Initializing Window and Event Handling

Initializing GLFW window, implementing event handling, and creating a termination function for GLFW.

Adding OpenGL Functions

Adding and using OpenGL functions like GL clear to clear the window and GL color to set the color before drawing.

Setting OpenGL Version and Hints

Setting up OpenGL version, window hints, and enabling specific features like transparency using GLFW hints.

Drawing a Triangle

Drawing a triangle on a transparent framebuffer using OpenGL functions like GL begin, GL vertex, and GL color.

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