/// <summary>
/// Draws indexed, instanced geometry.
/// </summary>
/// <param name="primType">Type of the primitives to draw.</param>
/// <param name="indexCountPerInstance">Number of indices per instance to draw.</param>
/// <param name="startIndex">Starting index in the index buffer at which to read vertex indices from.</param>
/// <param name="baseVertex">Offset to add to each vertex index in the index buffer.</param>
/// <param name="instanceCount">Number of instances to draw.</param>
public override void DrawIndexedInstanced(PrimitiveType primType, int indexCountPerInstance, int startIndex, int baseVertex, int instanceCount)
{
D3D10Helper.CheckDisposed(_graphicsDevice);
if (indexCountPerInstance <= 0)
{
throw new ArgumentOutOfRangeException("vertexCount", "Index count must be greater than zero.");
}
if (instanceCount <= 0)
{
throw new ArgumentOutOfRangeException("instanceCount", "Number of instances to draw must be greater than zero.");
}
if (_currentIndexBuffer == null)
{
throw new ArgumentNullException("DrawIndexedInstanced requires a valid index buffer.");
}
else
{
D3D10Helper.CheckDisposed(_currentIndexBuffer);
}
//Send any remaining texture/sampler changes to the device.
FlushStates();
_graphicsDevice.InputAssembler.SetInputLayout(_currentPass.InputLayoutMap.GetOrCreateLayout(_currentVertexBuffers, _currentVertexBufferCount));
_graphicsDevice.InputAssembler.SetPrimitiveTopology(D3D10Helper.ToD3DPrimitiveType(primType));
_graphicsDevice.DrawIndexedInstanced(indexCountPerInstance, instanceCount, startIndex, startIndex, 0);
}
/// <summary>
/// Draws non-indexed geometry.
/// </summary>
/// <param name="primType">Type of the primitives to draw</param>
/// <param name="vertexCount">Number of vertices to draw</param>
/// <param name="startVertex">Starting index in the vertex buffer at which to read vertices from.</param>
public override void Draw(PrimitiveType primType, int vertexCount, int startVertex)
{
D3D10Helper.CheckDisposed(_graphicsDevice);
if (vertexCount <= 0)
{
throw new ArgumentOutOfRangeException("vertexCount", "Vertex count must be greater than zero.");
}
//Send any remaining texture/sampler changes to the device.
FlushStates();
_graphicsDevice.InputAssembler.SetInputLayout(_currentPass.InputLayoutMap.GetOrCreateLayout(_currentVertexBuffers, _currentVertexBufferCount));
_graphicsDevice.InputAssembler.SetPrimitiveTopology(D3D10Helper.ToD3DPrimitiveType(primType));
_graphicsDevice.Draw(vertexCount, startVertex);
}
