shader

omar shaaban · Post by **omar shaaban** » Sat Jun 02, 2007 6:28 am

sorry guys i know i am asking many qustions but i just undwerstand from u better!!
what is shader?
and how do i make a shader?
and how to use it!?

roxaz · Post by **roxaz** » Sat Jun 02, 2007 9:53 am

shader is a thing that manipulate pixerls/colors (vertex shader) or vertices (vertex shader) to do transformations. to make shader you have to write it with special shader language (HLSL in example) and if you want to use it - use search

Luben · Post by **Luben** » Sat Jun 02, 2007 10:10 am

A shader is a program that modifies how the pixels/verticles are processed on the gpu. For example, say that you have a texture, on which there are 2 colors, say green and blue.

Now for some reason, you might want to filter the blue colors, so that only green and red are displayed(Altough there is no red in that texture.).

Then you could write a pixel shader, which takes the pixel you normally would display, sets the blue color part to 0, and returns the new color.

A vertex shader is pretty much the same, but works with the verticles instead, so you could reposition them or something like that.