Heightmap Terrain flicker

[Dan]

dont mind if I show off my landscape here?

[Colin]

that looks pretty good - i have moved onto texture splatting now, once i finish with multi-texturing my terrain, i will re-post also

[Colin]

seems i have broken something, i can't understand why this is happening, my code for loading raw heightmaps is as follows:

  SetLength(vertices, F_Vertices);
  iVertices := 0;
  AssignFile(f, filename);
  Reset(f, 1);

  // Loop across and up
  for iy := 0 to F_VertsY-1 do begin
    for ix := 0 to F_VertsX-1 do begin
      BlockRead(f, height, 1);

      // Create the verts
      vertices[iVertices].x := (ix*tScale);
      vertices[iVertices].y := height*tHeight;
      vertices[iVertices].z := (iy*tScale);

      vertices[iVertices].u := ix;
      vertices[iVertices].v := iy;

      Inc(iVertices);
    end;
  end;

  CloseFile(f);

I have not changed anything since last night regarding heightmaps, but today it is doing some weird sheeat

screenshot >



any ideas?


Never mind, seems my heightmap was corrupt

new screenshot >

[Dan]

looks much better than the first version
how are you doing the texture blending? (vertex mask? texture mask? do you use layers or blend the textures in a single pass?)

[Colin]

I am using 1 alphamap + 3 textures in a single pass via hlsl, i plan to add a 2 pass version to support more textures.... however i was also considering fitting more than 1 texture into a loaded texture file and messing around with u,v coords to have many textures in a single pass.

[Dan]

do you have any plans for adding the bump mapping? that will double the number of texture slots you will need which makes a single pass blending a bit less attractive.

[Colin]

after some planning i have decided i will most likely add a render stage system, allowing for multiple effect files for each stage, so i can have texture/diffuse, bump, lighting per stage.