NVidia tut tut
BlitzMax Forums/OpenGL Module/NVidia tut tut
| ||
| I was attempting cube mapping and was using one of their sample cube maps (the office lobby one) and some of their sample code. Rendered a reflective sphere and it looked fine, some text on there was mirrored in the sphere so I assumed all was ok. Then I rendered out the cube map to an environment cube so I could see how it all looked, and noticed the text on that was reversed too. Uh? I found the text was reversed on the 'source' images, so I made my own and hacked away at it for a while and eventualy worked out I had to do some other stuff before it reflected correctly.  Conclusion: NVidia used a reversed cube map so the text looked mirrored! Unless I'm sorely mistaken, they're cheating :) Moral: Be thankful for all the nice tutorials out there, but be sure you understand what's going on and don't always take them as gospel, else you'll waste time like I did. Weeeeeeeeeeeeeeeeeeee.... |
| ||
| thats a bit too tistorted isnt it? surly you shouldnt see any of the red wall and less than 1/2 the blue wall ? it looks like the reflection has its angles reversed... |
| ||
Yeh I'm using a wide FOV so you can see a bit more of the environment cube in the first pic :) I edited NVidias cubemap, I horizontally flipped the front/back/top/bottom textures, then swapped the names of the left/right ones. Now it's correct.  |
| ||
| btw did I mention it looks good! :) |
   |