Is there any way to enable GL_CLAMP_TO_EDGE for a specific texture/shader?
I have a translucent light cone texture and it’s a bit annoying having to make the texture stretch slightly bigger than the faces it occupies so you don’t get sparklies at the end form the wrap around texturing.
Use clampmap instead of map in the shader:
clampmap textures/yourstuff/yourtexture.tga
You might also consider adding nomipmaps to the shader as well, so when it’s further away the edges won’t show.
Keep in mind that Q3A clamping is GL_CLAMP, not GL_CLAMP_TO_EDGE. The border color is always black/transparent, so keep the pixels of your image at least 1 pixel away from the texture edge.
y