When I draw two polygons on a horizon sometimes there are miscolored pixels. Often a small horizontal line but most of the time just isolated pixels. Each polygon is made with its own glbegin/glend pair. For example,
When the texture is set to modulate I get the problem. When in decal mode the problem goes away but the scene does not look as good. modulate has a much richer color. Whether I clamp or repeat my texture does not seem to affect the problem. The texture border color is transparent … default … changing that does not seem to affect the problem. when I use interpolate it does not really improve the problem. If I use add for textures then everything gets too bright.
It appears that the background color of the polygon is being drawn for the pixel and the texture is not being accounted for at these problem points. So, if I set clearcolor to blue the specks would still be the tan color. Is this a case where the polygons slightly overlap and my ati card does not know which texture to use?
Is this a polygon offset kind of problem? I’m stuck on this and cannot think of any alternatives that I have not tried to solve the problem.
When I draw the blue background I have the depth filter turned off. So, the depth values are the default for the background.
Also, the polygons are mip mapped. This was done with the glu stuff if I recall. So, all the mip map levels are set correctly.
Thanks in advance…grabbing at straws here.