public void Clear()
{
points.Clear();
vertFront.Clear();
vertBack.Clear();
indBoth.SetCount(0); // we don't deallocate indices, we only set "used" count
}
/// <summary>
/// Updates the vertex buffer object from the <see cref="Vertices"/> array.
/// </summary>
/// <typeparam name="TVertex">The type of vertex buffer to use.</typeparam>
/// <param name="transform">Function that transforms the vertex array data to a interleaved struct format.</param>
private void UpdateVertices <TVertex>(
Func <Vector3, Vector3, Color4, TVertex> transform
) where TVertex : struct, IVertexData
{
// if the type of the vertex data has changed we need to create a new buffer
if (m_vertexBuffer != null && m_vertexBuffer.GetType() != typeof(VertexBuffer <TVertex>))
{
m_vertexBuffer.Dispose();
m_vertexBuffer = null;
}
// create vertex buffer if needed
if (m_vertexBuffer == null)
{
m_vertexBuffer = new VertexBuffer <TVertex>(m_vertices.Length);
}
// copy the vertices into the buffer
VertexBuffer <TVertex> buffer = m_vertexBuffer as VertexBuffer <TVertex>;
buffer.Clear();
int offset;
TVertex[] vertexArray = buffer.WriteDirectly(m_vertices.Length, out offset);
for (int i = 0; i < m_vertices.Length; i++)
{
vertexArray[i] = transform(m_vertices[i], m_normals[i], m_colors[i]);
}
// upload to the GPU
buffer.BufferData();
m_vertexBufferDirty = false;
}
public void ClearBuffers()
{
if (BufferInitialized)
{
IndexBuffer.Clear(BufferTarget.ElementArrayBuffer);
VertexBuffer.Clear(BufferTarget.ArrayBuffer);
}
}
public void SetVertices(IEnumerable <T> vertices)
{
if (!BufferInitialized)
{
CreateBuffers();
}
VertexBuffer.Clear(BufferTarget.ArrayBuffer);
VertexBuffer.Init(BufferTarget.ArrayBuffer, vertices.ToArray());
}
public void AppendVertices(IEnumerable <T> vertices)
{
if (!BufferInitialized)
{
CreateBuffers();
}
var currentVerts = VertexBuffer.Content;
VertexBuffer.Clear(BufferTarget.ArrayBuffer);
VertexBuffer.Init(BufferTarget.ArrayBuffer, currentVerts.Concat(vertices).ToArray());
}
public void ClearBuffers()
{
if (BufferInitialized)
{
IndexBuffer.Clear(BufferTarget.ElementArrayBuffer);
VertexBuffer.Clear(BufferTarget.ArrayBuffer);
}
else
{
TempIndices.Clear();
TempVertices.Clear();
}
}
/// <summary>
/// Called just prior to rendering the component.
/// </summary>
protected override void OnRender()
{
if (m_vertexBuffer == null)
{
m_vertexBuffer = new VertexBuffer <VertexPNC>(24);
m_surface.SetVertexBuffer(m_vertexBuffer, PrimitiveType.Lines);
}
if (m_dirty)
{
ReadOnlyCollection <Vector3> corners = m_mesh.Bounds.Corners;
// clear any lines
m_vertexBuffer.Clear();
// get the underlying buffer
int offset;
VertexPNC[] verts = m_vertexBuffer.WriteDirectly(24, out offset);
// each consecutive pair of elements forms a line segment drawn to form the box wireframe
verts[0] = new VertexPNC(corners[0], Vector3.Zero, Color4.White);
verts[1] = new VertexPNC(corners[4], Vector3.Zero, Color4.White);
verts[2] = new VertexPNC(corners[1], Vector3.Zero, Color4.White);
verts[3] = new VertexPNC(corners[5], Vector3.Zero, Color4.White);
verts[4] = new VertexPNC(corners[2], Vector3.Zero, Color4.White);
verts[5] = new VertexPNC(corners[6], Vector3.Zero, Color4.White);
verts[6] = new VertexPNC(corners[3], Vector3.Zero, Color4.White);
verts[7] = new VertexPNC(corners[7], Vector3.Zero, Color4.White);
verts[8] = new VertexPNC(corners[0], Vector3.Zero, Color4.White);
verts[9] = new VertexPNC(corners[1], Vector3.Zero, Color4.White);
verts[10] = new VertexPNC(corners[1], Vector3.Zero, Color4.White);
verts[11] = new VertexPNC(corners[3], Vector3.Zero, Color4.White);
verts[12] = new VertexPNC(corners[3], Vector3.Zero, Color4.White);
verts[13] = new VertexPNC(corners[2], Vector3.Zero, Color4.White);
verts[14] = new VertexPNC(corners[2], Vector3.Zero, Color4.White);
verts[15] = new VertexPNC(corners[0], Vector3.Zero, Color4.White);
verts[16] = new VertexPNC(corners[4], Vector3.Zero, Color4.White);
verts[17] = new VertexPNC(corners[5], Vector3.Zero, Color4.White);
verts[18] = new VertexPNC(corners[5], Vector3.Zero, Color4.White);
verts[19] = new VertexPNC(corners[7], Vector3.Zero, Color4.White);
verts[20] = new VertexPNC(corners[7], Vector3.Zero, Color4.White);
verts[21] = new VertexPNC(corners[6], Vector3.Zero, Color4.White);
verts[22] = new VertexPNC(corners[6], Vector3.Zero, Color4.White);
verts[23] = new VertexPNC(corners[4], Vector3.Zero, Color4.White);
// upload the lines to the GPU if changed
m_vertexBuffer.BufferData();
}
}
public void SetVertices(IEnumerable <T> vertices)
{
//if (!BufferInitialized)
// CreateBuffers();
if (BufferInitialized)
{
VertexBuffer.Clear(BufferTarget.ArrayBuffer);
VertexBuffer.Init(BufferTarget.ArrayBuffer, vertices.ToArray());
}
else
{
TempVertices = vertices.ToList();
}
}
public void AppendVertices(IEnumerable <T> vertices)
{
//if (!BufferInitialized)
// CreateBuffers();
if (BufferInitialized)
{
var currentVerts = VertexBuffer.Content;
VertexBuffer.Clear(BufferTarget.ArrayBuffer);
VertexBuffer.Init(BufferTarget.ArrayBuffer, currentVerts.Concat(vertices).ToArray());
}
else
{
TempVertices.AddRange(vertices);
}
}
private void PrepareBuffer()
{
if (InstanceDataVertexBuffer == null)
{
if (SceneObjects.Count > 0)
{
InstanceDataVertexBuffer = PrivateRendererContext.CreateVertexBuffer(IntPtr.Zero,
SceneObjectArrayInstanceData.SIZE,
RendererBufferUsage.DynamicDraw, "SceneObjectArrayInstanceData_VBO_" + ObjectName + "_" + DateTime.Now.Ticks);
SceneObjectArrayInstanceData[] data = CollectData();
InstanceDataVertexBuffer.Clear();
InstanceDataVertexBuffer.UpdateSubBuffer<SceneObjectArrayInstanceData>(data, 0, data.Length * SceneObjectArrayInstanceData.SIZE);
}
}
else
{
SceneObjectArrayInstanceData[] data = CollectData();
if ((SceneObjects.Count * SceneObjectArrayInstanceData.SIZE) > InstanceDataVertexBuffer.SizeInBytes)
{
int actual_size = data.Length * SceneObjectArrayInstanceData.SIZE;
PrivateRendererContext.DeleteGraphicsResource(InstanceDataVertexBuffer);
if (SceneObjects.Count > 0)
{
InstanceDataVertexBuffer = PrivateRendererContext.CreateVertexBuffer(IntPtr.Zero, actual_size,
RendererBufferUsage.DynamicDraw, "SceneObjectArrayInstanceData_VBO_" + ObjectName + "_" + DateTime.Now.Ticks);
}
InstanceDataVertexBuffer.Clear();
InstanceDataVertexBuffer.UpdateSubBuffer<SceneObjectArrayInstanceData>(data, 0, data.Length * SceneObjectArrayInstanceData.SIZE);
}
}
}
public override void Render()
{
VertexBuffer.Clear();
Draw();
}
