"I can't understand why people are frightened of new ideas.
I'm frightened of the old ones."
- John Cage

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Light trail
Tuesday, October 26, 2004 | Permalink

Executable
Source code
LightTrail.zip (225 KB)

Required:
GL_ARB_shader_objects
GL_ARB_vertex_shader
GL_ARB_fragment_shader
GL_ARB_shading_language_100
GL_EXT_blend_color
This demo implements a simple light trail technique. The light sources are rendered into a texture. This texture is then blurred and scaled down slightly between each frame and new light rendered into it the next frame. This creates a corona around the light and a light trail as the light moves or the view position changes.

This demo should run on Radeon 9500+ and up and GFFX 5200 and up.