I am using Direct3D to draw a tile map to the screen. Why can't get the edges to match properly?

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I am using Direct3D to draw a tile map to the screen. Why can't get the edges to match properly? 09/05/2011 02:44 by ScottHamman: First answer posted by JavyTechGuy at 09/05/2011 02:44

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JavyTechGuy
This is due to the algorithm used to determine what pixels to draw when rendering a triangle, which is determined by whether the center of each pixel is enclosed by the triangle. The pixel centers lie on integer values, so if you are using integer coordinates to define a rectangle the sides will straddle pixels.
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