Project Shadow Mapping

Project Overview

This project focused on implementing shadow mapping. The goal was to render realistic shadows by storing depth information from the light's point of view and using it to determine shadowed regions on screen.

Tasks Completed

• Configured a framebuffer and depth texture for shadow mapping
• Rendered scene depth from the light’s perspective using the WriteDepth shader
• Applied shadows in the main render pass using the Shadow shader based on depth comparison
• Implemented shadow logic using only vertex and fragment shaders (no geometry shader)
• Used textureProj() in GLSL for shadow map sampling
• Reduced shadow acne and shimmering using glPolygonOffset

Reflection

A key challenge was aligning coordinate spaces correctly. Shadows were initially distorted due to using object space coordinates. Fixing this by converting to world space before applying the shadow matrix significantly improved the result.

Demo