OpenGL 3D Rendering

An academic C++ project built around OpenGL 3.3 Core Profile and a navigable 3D scene.

The renderer needed to load OBJ geometry and MTL materials, preserve a linear lighting workflow, render an environment and convert HDR output for display.

TinyOBJLoader reads OBJ and MTL assets before geometry is uploaded through VAO, VBO and IBO buffers. Diffuse textures, material coefficients and an orbital camera feed the rendering pipeline.

The shaders combine Phong lighting, hemispheric ambient contribution, Fresnel-Schlick, rim and back lighting, environment mapping and a cubemap skybox.

View and projection matrices are shared through a ViewProj UBO. The 3D pass renders into a GL_RGBA16F framebuffer, followed by a full-screen post-processing pass.

Diffuse color textures use sRGB formats so shader calculations stay in linear space. Reinhard tone mapping and gamma correction are applied after HDR rendering.

The color pipeline has to keep lighting calculations linear while textures arrive in sRGB and final output returns to display space. Environment mapping and post-processing also require clear texture-unit and render-pass ownership.

The project connected asset loading, GPU buffer organization, shader lighting, camera state and post-processing in one inspectable rendering pipeline.