BruteForceTerrain.cs.no

private int terrainSize = 257;      // (2^N) + 1
public Vertex3[,] terrainData;

public void generateTerrain()
{
    terrainData = new Vertex3[terrainSize, terrainSize];

    Bitmap bitmap = new Bitmap("terrainHeightmap.jpg");

    for (int z = 0; z < terrainSize; z++)
    {
        for (int x = 0; x < terrainSize; x++)
        {
            // Since the heightmap is in greyscales, we can use any color channel
            int height = bitmap.GetPixel(x, z).R;
            terrainData[x, z] = new Vertex3();
            terrainData[x, z].X = x;
            terrainData[x, z].Y = height;
            terrainData[x, z].Z = z;
        }
    }
}
        
public void BruteForceRender()
{
    for (int z = 0; z < terrainSize; z++)
    {
        GL.Begin(BeginMode.TriangleStrip);
        for (int x = 0; x < terrainSize; x++)
        {
            Vertex3 v1 = terrainData[x + 1, z];
            Vertex3 v2 = terrainData[x, z];
            GL.Vertex3(v1.X, v1.Y, v1.Z);
            GL.Vertex3(v2.X, v2.Y, v2.Z);
        }
        GL.End();
    }
}