1- how many meshes are we looking at in the pic... one or two...

2- what program are you using to create the lightmap...

--Mike

to me it has not given me problems 

I used lightmap shader on the skinmesh with the lightmap image. Maybe Joseuz used another method but you can try it, i saw it on the shadmar's tutorial. If it doesn't work, take a look there.

ok... this is common if you didn't use the .x mesh which is output by the lightmapper...

for example... giles gives me two meshes... use those two meshes, not your original
(which you may want to keep as another name, just in case)

and set the depth sorting and  no zbuffer properties for the lightmap mesh as well...


one more thing... have you guys tried running your terrain mesh through Shad's TerrainShader Util...

http://www.3drad.com/forum/index.php?topic=3361.30



--Mike

Hey guys, I've been trying to use the lightmap shader from the system shaders addon, but I am having some isssues.

No matter what I try (creating the lightmap in different programs, using different depth sorting/z-buffer settings etc...) it always comes out looking like this:



I have followed the tutorial floating around here somewhere, set the shader to lightmap, the mode to Shaddow-map and used a script to set the emmissive factor

Any thoughts?

Thanks,

George.

Use user_lightmap_� shader, put your lightmap in the model's directory as "userTextureA.dds". It's recomended to convert your lightmap to .dds. Then there are no way of errors . I've tried it also even from L3DT.

Mike, I've tried creating a lightmap with Giles and using both of the .x meshes it produces. Sadly, I still have problems with the lightmap shader. The LM mesh is still completely black. However, I've found that by using another shader (user_tile for example) I can get the lightmap to work fairly well (see attached pic).

As for the craziness shown in the first post, I can fix that by messing around with the Depth sorting settings (thanks to everyone who suggested that).

I don't know why the lightmap shader isn't working for me, but seeing as the above method works fine, it is no longer an issue.

The only problem I'm running into now is that, because the shadow maps created in both Giles and L3DT contain shading for the main mesh, the areas on the Island model not facing the sun are really dark. These areas are darkened by the sunlight shading on top of the shading already provided by the lightmap.

I've tried adjusting the emmissive value on my island mesh, but this doesn't work on the terrain shader (it only increases the intensity of the original RGB texture and makes it visible over the grass rock and sand textures)

G... if u can send me the mesh and the texture i'll take a look at it...
(i'll keep your mesh under wraps for you)...

check your messages...

in the meantime... some lightmapping basics:

most of this you probably already know, but i'll mention it just in case...


there are two methods to lightmap a scene... the dual mesh method and the shader method...
 each has it's minuses and pluses...
 dual mesh method requires 2 meshes and if they are not identical, you may get artifacting...
 the single mesh method requires a single uvmap for the mesh... no tiling...

dual mesh method
  the base .x mesh can use either 000_deafault, 0003_bumpy, 004_bumpy_glossy, or 0014_user_bumpy or
  0015_user_bumpy_glossy shader property and the default mode set...
   use the .x mesh that comes from your lightmapping program... rename it to 000_mesh..
   Ignore Point Lights and No Shadows, No Fog, and Ignore Point Lights properties should be set...
  (allowing point lights for the base .x mesh can be allowed in some scenes in order to highlight a "lit" area)

  the lightmap .x mesh should use the 000_default  shader with the mode set to Shadow-map...
  set the Depth Sorting and No Z-Buffer properties along with No Shadows, No Dog, and Ignore Point Lights...


shadered method using 0032_user_lightmap system shader
  if your lightmapper is Giles,  use the UVMap Lighting method...
  your model should have a single uvmapped texture... tiling won't work here...
  output as normal, but you only need the lightmap bmp texture file which must be converted to renamed user_textureA.dds
  set the mesh to use 0032_user_lightmap...
 
 
below is attached 2 simple compiled examples of each method that you can walk around in and see first hand...

method1 is the dual mesh lightmapped method
method2 is the shadered lightmapped method

just download anywhere and unzip... (you will need the c++ runtimes but if you run RAD you already have em)

--Mike