public void DrawTerrainChunkGeometrySubsets(Shader shader, TerrainChunkGeometry geometry, int subsetsMask)
{
foreach (TerrainChunkGeometry.Buffer buffer in geometry.Buffers)
{
int num = int.MaxValue;
int num2 = 0;
for (int i = 0; i < 8; i++)
{
if (i < 7 && (subsetsMask & (1 << i)) != 0)
{
if (buffer.SubsetIndexBufferEnds[i] > 0)
{
if (num == int.MaxValue)
{
num = buffer.SubsetIndexBufferStarts[i];
}
num2 = buffer.SubsetIndexBufferEnds[i];
}
}
else
{
if (num2 > num)
{
Display.DrawIndexed(PrimitiveType.TriangleList, shader, buffer.VertexBuffer, buffer.IndexBuffer, num, num2 - num);
ChunkTrianglesDrawn += (num2 - num) / 3;
ChunkDrawCalls++;
}
num = int.MaxValue;
}
}
}
}
public void DisposeTerrainChunkGeometryVertexIndexBuffers(TerrainChunkGeometry geometry)
{
foreach (TerrainChunkGeometry.Buffer buffer in geometry.Buffers)
{
buffer.Dispose();
}
geometry.Buffers.Clear();
geometry.InvalidateSliceContentsHashes();
}
public void SetupTerrainChunkGeometryVertexIndexBuffers(TerrainChunk chunk)
{
TerrainChunkGeometry geometry = chunk.Geometry;
DisposeTerrainChunkGeometryVertexIndexBuffers(geometry);
int num = 0;
while (num < 112)
{
int num2 = 0;
int num3 = 0;
int i;
for (i = num; i < 112; i++)
{
int num4 = i / 16;
int num5 = i % 16;
TerrainGeometrySubset terrainGeometrySubset = geometry.Slices[num5].Subsets[num4];
if (num2 + terrainGeometrySubset.Vertices.Count > 65535 && i > num)
{
break;
}
num2 += terrainGeometrySubset.Vertices.Count;
num3 += terrainGeometrySubset.Indices.Count;
}
if (num2 > 65535)
{
Log.Warning("Max vertices count exceeded around ({0},{1},{2}), geometry will be corrupted ({3}/{4} vertices).", chunk.Origin.X, i % 16 * 16, chunk.Origin.Y, num2, 65535);
}
if (num2 > 0 && num3 > 0)
{
TerrainChunkGeometry.Buffer buffer = new TerrainChunkGeometry.Buffer();
geometry.Buffers.Add(buffer);
buffer.VertexBuffer = new VertexBuffer(TerrainVertex.VertexDeclaration, num2);
buffer.IndexBuffer = new IndexBuffer(IndexFormat.SixteenBits, num3);
int num6 = 0;
int num7 = 0;
for (int j = num; j < i; j++)
{
int num8 = j / 16;
int num9 = j % 16;
TerrainGeometrySubset terrainGeometrySubset2 = geometry.Slices[num9].Subsets[num8];
if (num9 == 0 || j == num)
{
buffer.SubsetIndexBufferStarts[num8] = num7;
}
if (terrainGeometrySubset2.Indices.Count > 0)
{
m_tmpIndices.Count = terrainGeometrySubset2.Indices.Count;
ShiftIndices(terrainGeometrySubset2.Indices.Array, m_tmpIndices.Array, num6, terrainGeometrySubset2.Indices.Count);
buffer.IndexBuffer.SetData(m_tmpIndices.Array, 0, m_tmpIndices.Count, num7);
num7 += m_tmpIndices.Count;
}
if (terrainGeometrySubset2.Vertices.Count > 0)
{
buffer.VertexBuffer.SetData(terrainGeometrySubset2.Vertices.Array, 0, terrainGeometrySubset2.Vertices.Count, num6);
num6 += terrainGeometrySubset2.Vertices.Count;
}
if (num9 == 15 || j == i - 1)
{
buffer.SubsetIndexBufferEnds[num8] = num7;
}
}
}
num = i;
}
geometry.CopySliceContentsHashes(chunk);
}