   Detecting small objects on small buffers
  Hi,A question about rendering on small buffers (32x32 or 64x64) without lineair filtering. In order to do some sort of occlusion test, I render a specific object and its surrounding scene to a small buffer. As the RGBA value is actually a 32 bit pointer, I should not blur or filter it. But, how to deal with distant objects? If an object is already a small dot on a normal resolution (800x600 for example), it might completely dissapear on the small image.How to prevent this? There should be at least 1 pixel visible (IF NOT completely occluded). The surrounding area is less important. And how does OpenGL decide which pixels will be visible anyway, when filtering is disabled?Greetings,Rick   