Grass is too dark & gappy
This is how my grass currently looks like: http://i.imgur.com/531c9t1.png
Obviously, this doesn't look good or realistic.
What can I do to
When seen from afar parts of the grass disappear even though the ground is almost fully covered with it.
asked Sep 04 '15 at 03:21 PM in Rendering
biggest problem I see is that you need to carefully color match the grass on the landscape to the grass meshes. The landscape grass is either way too bright or your mesh grass is way too dark. Once you match them, the "gappyness" will go away. There is no avoiding gaps with grass, they have to disappear at some distance you just need to make sure that the color and brightness are similar when that happens.
Also maybe try using the 2sided foliage lighting model. What are you doing for normals? Sometimes pushing the mesh normals upwards a bit, or using spherical normals on them can help.
If you are asking how to brighten the grass, that would be in the material by multiplying the basecolor and subsurface color by scalar parameters that you can tweak. Also set a scalar parameter for opacity and tweak that, it affects the subsurface.
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