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Perpixel spotlights
Monday, May 13, 2002 | Permalink

Executable
Source code
Spotlights.zip (625 KB)

Required:
GL_ARB_texture_env_dot3
GL_ARB_texture_env_crossbar or GL_NV_texture_env_combine4
GL_EXT_texture3D
GL_EXT_texture_edge_clamp
Recommended:
GL_ARB_texture_compression
GL_EXT_texture_compression_s3tc
This is a demo of perpixel shotlights. Two flashlights are flying around lighting the bumpy walls. Looks pretty cool
The effect requires four texture units, a bumpmap, vectorfield, spotlight texture, and a small 2 texel texture to remove the backprojection. (With fragment shaders the last texture shouldn't be neccesary)

It should run on Radeon 8500, Parhelia and GF3/4.
Source is included as usual.