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Laplace
Tuesday, September 24, 2002 | Permalink

Executable
Source code
Laplace.zip (398 KB)

Required:
GL_ATI_fragment_shader
GL_EXT_texture_edge_clamp
WGL_ARB_render_texture/GLX_ATI_render_texture

Recommended:
GL_ARB_texture_compression
GL_EXT_texture_compression_s3tc
This demo renders a simple scene into a texture. Then it draws a quad over the screen with this texture and applies a Laplace filter through a fragment shader to the texture. This will extract the edges in the picture.
Will run on Radeon 8500 and up.