OpenGL - Relief Mapping / Environment Mapping

OpenGL Graphics Engine

This project is a C++ graphics engine built with OpenGL 4.3. It showcases advanced rendering techniques and interactive UI using ImGui.

✨ Main Features

🧱 Entity System

• Model loading via Assimp.
• Dynamic entity positioning and transformation (glm::translate, glm::rotate, etc.).
• Entity types:
  • Deferred_Rendering
  • Relief_Mapping
  • Environment_Map
• Animation support (e.g., rotating Pikachu and relief-mapped cubes).

🔦 Lighting System

• Supports:
  • Directional Lights
  • Point Lights
• Real-time light creation and deletion via UI.
• Up to 400 dynamic lights per rendering mode.
• Customizable color, direction, position, and intensity.

🎮 Camera Controls

• First-person movement (W, A, S, D, Q, E).
• Mouse-driven rotation.
• "Gravitational Camera" mode (key F) always looks at the origin.
• Adjustable speed and sensitivity via UI.

🖼️ Rendering Modes

1. Deferred Rendering

• G-Buffer setup:
  • Albedo
  • Normals
  • Position
  • View Direction
  • Depth
• Buffer selection viewable via UI.
• Deferred lighting with many dynamic lights.

2. Relief Mapping

• Realistic implementation using normal and height maps.
• Toggleable view modes:
  • Main
  • Normal
  • Height
• Adjustable relief intensity (uHeightScale) via slider.

3. Environment Mapping

• Reflection and refraction via cube maps.
• Three preloaded cube maps: Outdoor, House, Studio.
• Toggle between Reflection and Refraction modes.
• Adjustable diffuse ambient intensity (diffus_amb).

🧰 Additional Features

• Switch between Forward Rendering and Deferred Rendering.
• Skybox rendering with proper depth behavior.
• Live shader reloading when GLSL files are edited.
• Real-time entity and light inspector.
• Display available OpenGL extensions.
• Real-time FPS monitor.

🧠 Included Shaders

Shader File	Description
FORWARD.glsl	Forward rendering shader
RENDER_GEOMETRY.glsl	Geometry pass (deferred)
Render_Quad.glsl	Final composition for G-Buffers
Relief_Mapping.glsl	Relief mapping with view modes
Reflection_environment.glsl	Environment mapping (reflections/refractions)
CubeMap.glsl	Skybox rendering

🧾 Requirements

• OpenGL 4.3+

• GLM

• ImGui

• stb_image

• Assimp

• G-Buffer outputs (Albedo, Normals, Depth...).
  
  

• Relief mapped cubes with different scales and filters:
  -Albedo
  
  -Normal
  
  -Height
  

• Full skybox and environment setup.
  

• Reflections using different cube maps.