S
samyak
Guest
How to do a realistic lighting on objects? If a light directional light falls on an object, then the side of the object facing the light should be brighter than the other side.
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Lighting on objects
- Thread starter samyak
- Start date
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- Tags
- directional lighting object
IndianaBones
Member
2D or 3D?
If 3D well hopefully whatever 3D engine / method you are using supports lighting and will handle it naturally.
If 2D you want to look into normal mapping. You'll need the artist to create normal maps for all your sprites, and then pass the sprite and the normal map into an appropriate shader.
I was just reading a good introductory article on this not a minute ago:
https://www.gamasutra.com/view/news..._normal_maps_in_The_Siege_and_the_Sandfox.php
If you search these forums and the archived ones, there is some posts on doing this in GameMaker, but its not a beginner level topic, so depending on your skill level you may have to do some research into it.
https://www.gamasutra.com/view/news..._normal_maps_in_The_Siege_and_the_Sandfox.php
If 3D well hopefully whatever 3D engine / method you are using supports lighting and will handle it naturally.
If 2D you want to look into normal mapping. You'll need the artist to create normal maps for all your sprites, and then pass the sprite and the normal map into an appropriate shader.
I was just reading a good introductory article on this not a minute ago:
https://www.gamasutra.com/view/news..._normal_maps_in_The_Siege_and_the_Sandfox.php
If you search these forums and the archived ones, there is some posts on doing this in GameMaker, but its not a beginner level topic, so depending on your skill level you may have to do some research into it.
https://www.gamasutra.com/view/news..._normal_maps_in_The_Siege_and_the_Sandfox.php
Joe Ellis
Member
This is normally done with dot_product, it basically gets the difference between the surface's direction and the light direction, the bigger the difference, the more light.
It returns between (-1 and 1) (if done using normals) so often to convert this result to pixel colors you * the result by 0.5 then + 0.5,
or + 1, then then * by 0.5