"Extremism is so easy. You've got your position, and that's it. It doesn't take much thought. And when you go far enough to the right, you meet the same idiots coming around from the left."
- Clint Eastwood
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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.