//creation
private void makeLODVB(ref VertexBuffer vb, ref uint numVerts, eLODLevel lod)
{
VertexTypes.Pos[] verts = null;
uint width = BTerrainQuadNodeDesc.cMaxWidth;
uint vd = width + 1;
uint tw = width;
uint td = width;
int counter = 0;
switch (lod)
{
case eLODLevel.cLOD0:
{
numVerts = (BTerrainQuadNodeDesc.cMaxWidth + 1) * (BTerrainQuadNodeDesc.cMaxHeight + 1) * 6; //*3 (TRILIST) *2 (per tile)
verts = new VertexTypes.Pos[numVerts];
vd = width * 2; // width + 1;
tw = width;
td = width;
for (int z = 0; z < td; z++)
{
for (int x = 0; x < tw; x++)
{
int k = z + (int)(x * vd);
verts[counter++].x = (k);
verts[counter++].x = (k + vd);
verts[counter++].x = (k + 1);
verts[counter++].x = (k + 1);
verts[counter++].x = (k + vd);
verts[counter++].x = (k + vd + 1);
}
}
}
break;
case eLODLevel.cLOD1:
{
numVerts = (1 + (width >> 1)) * (1 + (width >> 1)) * 6; //*3 (TRILIST) *2 (per tile)
verts = new VertexTypes.Pos[numVerts];
vd = (width >> 1) * 2; // width + 1;
tw = (width >> 1);
td = (width >> 1);
for (int z = 0; z < td; z++)
{
for (int x = 0; x < tw; x++)
{
int k = z + (int)(x * vd);
verts[counter++].x = (k);
verts[counter++].x = (k + vd);
verts[counter++].x = (k + 1);
verts[counter++].x = (k + 1);
verts[counter++].x = (k + vd);
verts[counter++].x = (k + vd + 1);
}
}
}
break;
case eLODLevel.cLOD2:
{
numVerts = (1 + (width >> 2)) * (1 + (width >> 2)) * 6; //*3 (TRILIST) *2 (per tile)
verts = new VertexTypes.Pos[numVerts];
vd = (width >> 2) * 2; // width + 1;
tw = (width >> 2);
td = (width >> 2);
for (int z = 0; z < td; z++)
{
for (int x = 0; x < tw; x++)
{
int k = z + (int)(x * vd);
verts[counter++].x = (k);
verts[counter++].x = (k + vd);
verts[counter++].x = (k + 1);
verts[counter++].x = (k + 1);
verts[counter++].x = (k + vd);
verts[counter++].x = (k + vd + 1);
}
}
}
break;
case eLODLevel.cLOD3:
{
numVerts = (1 + (width >> 3)) * (1 + (width >> 3)) * 6; //*3 (TRILIST) *2 (per tile)
verts = new VertexTypes.Pos[numVerts];
vd = (width >> 3) * 2; // width + 1;
tw = (width >> 3);
td = (width >> 3);
for (int z = 0; z < td; z++)
{
for (int x = 0; x < tw; x++)
{
int k = z + (int)(x * vd);
verts[counter++].x = (k);
verts[counter++].x = (k + vd);
verts[counter++].x = (k + 1);
verts[counter++].x = (k + 1);
verts[counter++].x = (k + vd);
verts[counter++].x = (k + vd + 1);
}
}
}
break;
default:
return;
}
vb = new VertexBuffer(typeof(VertexTypes.Pos), (int)numVerts, BRenderDevice.getDevice(), Usage.None, VertexFormats.Position, Pool.Managed);
GraphicsStream stream = vb.Lock(0, (int)numVerts * sizeof(float) * 3, LockFlags.None);
stream.Write(verts);
vb.Unlock();
verts = null;
}
public void setStaticLODLevel(eLODLevel level)
{
mStaticLODLevel = level;
}
//queary
//lodVB
public void getLODVB(ref VertexBuffer vb, ref uint numVerts, eLODLevel lod)
{
vb = mVertexBuffers[(int)lod];
numVerts = mNumVerts[(int)lod];
}
public void getCursorLODVB(ref VertexBuffer vb, ref uint numVerts, eLODLevel lod)
{
mLODData.getCursorLODVB(ref vb, ref numVerts, lod);
}
