public void UpdateVertexBuffer(Device device)
{
// Don't do anything if we got no lines.
if (NumOfLines == 0 ||
// Or if some data is invalid
lines.Count < NumOfLines)
{
numOfPrimitives = 0;
return;
} // if (numOfLines)
if (buildVertexBuffer || numOfPrimitives != NumOfLines)
{
//UpdateVertexBuffer();
// Set all lines
for (int lineNum = 0; lineNum < NumOfLines; lineNum++)
{
LineManager3D.Line line = lines[lineNum];
LineVertices[lineNum * 2 + 0] = new VertexPositionColor(
new Vector4(line.startPoint, 1), line.startColor);
LineVertices[lineNum * 2 + 1] = new VertexPositionColor(
new Vector4(line.endPoint, 1), line.endColor);
} // for (lineNum)
numOfPrimitives = NumOfLines;
//TODO: WARNING: is this a memory leak?
//var dataRect = VertexBuffer.AsSurface().Map(SlimDX.DXGI.MapFlags.Discard);
//TODO: WARNING: possible bottleneck here
var dataRect = device.ImmediateContext.MapSubresource(vertexBuffer, MapMode.WriteDiscard, MapFlags.None);
dataRect.Data.WriteRange(lineVertices, 0, numOfPrimitives * 2);
device.ImmediateContext.UnmapSubresource(vertexBuffer, 0);
//VertexBuffer.AsSurface().Unmap();
// Vertex buffer was build
buildVertexBuffer = false;
} // if (buildVertexBuffer)
} // UpdateVertexBuffer()
/// <summary>
/// Add line
/// </summary>
public void addLineInternal(
Vector3 startPoint, Color4 startColor,
Vector3 endPoint, Color4 endColor)
{
// Don't add new lines if limit is reached
if (NumOfLines >= MaxNumOfLines)
{
/*ignore
* Log.Write("Too many lines requested in LineManager3D. " +
* "Max lines = " + MaxNumOfLines);
*/
return;
} // if (numOfLines)
// Build line
LineManager3D.Line line = new LineManager3D.Line(startPoint, startColor, endPoint, endColor);
// Check if this exact line exists at the current lines position.
if (lines.Count > NumOfLines)
{
if ((LineManager3D.Line)lines[NumOfLines] != line)
{
// overwrite old line, otherwise just increase numOfLines
lines[NumOfLines] = line;
// Remember to build vertex buffer in Render()
buildVertexBuffer = true;
} // if if
} // if
else
{
// Then just add new line
lines.Add(line);
// Remember to build vertex buffer in Render()
buildVertexBuffer = true;
} // else
// nextUpValue line
NumOfLines++;
} // AddLine(startPoint, startColor, endPoint)