Dynamic Lights and Shadows

Eduardo Rodrigues

Objectives

• Generate random scene
• Quick, simple; diamond-square algorithm
• Illuminate scene
• Multiple illumination models (Phong, Gouraud, Lamertian)
• Accurate shadow volumes
• Dynamic/Real-time
• OpenGL 4.0 and GLSL
• Probably important: Pixel/fragment shaders, vertex shaders, depth buffer, stencil buffer, hidden visibility algorithms

Really Basic Idea - Light + Shadows

Less Basic Idea - Soft Shadows

Not so Basic Idea - Volumetric Lighting

Resources

• Papers
• Illumination for Computer Generated Pictures - Phong
• Shadow algorithms for computer graphics – Crow
• More to come probably
• Websites
• GameDev.Net - Shadows, Phong
• Gamasutra - Shadows, Phong
• Given: Wikipedia, Wolfram, Stack Overflow, Google

Timeline

• Week 4
• Have random scene generation completely finished.
• Week 5
• Be familiar enough with OpenGL 4.0 and GLSL that actual work can begin.
• Week 7
• Have at least one illumination model completely finished.
• Week 8
• Have all illumination models completely finished. Begin work on shadow volumes.
• Week 10
• Have shadow volumes implemented.

Final Demo

• Random scene generation
• Randomly positioned/moving light sources
• Controllable camera
• Everything renders as expected regardless of scene/camera/light positions

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I have no idea what I'm doing

• Questions?
• blog.edrodrigues.com