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Brian48

Shaders- a curiosity

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This may seem obviously apparent to most but... Are Pixel Shaders really real time codings of filters and effects found in Image Editors Adobe PhotoShop and GIMP? Are Vertex Shaders really real time codings of filters and effects found in 3D modeling programs like Maya or 3D Studio? Do these filters and effects simply migrate to games when hardware improves from where they can only be efficiently done on a single frame to where they can done 30 Frames/Second?

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The concept is misleading...

Those applications are authoring tools. The game assets will not be authored by the game as it runs. They can do some of the same things but I don't think that means one will replace the other.

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A shader is a program that runs on your graphics card. Instead of using the fixed function pipeline, you can program the behaviour of the graphics card using your own shaders. This allows for customised behaviour and advanced effects.

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That's why the OpenGL ARB extensions "ARB_vertex_program" and "ARB_fragment_program" are more apt. Though I preferred the term "pixel" to "fragment".. but everybody's got to be different from one another, I suppose [wink]

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