ID3D11DeviceContext::DrawIndexedInstanced method (d3d11.h)
Draw indexed, instanced primitives.
void DrawIndexedInstanced( [in] UINT IndexCountPerInstance, [in] UINT InstanceCount, [in] UINT StartIndexLocation, [in] INT BaseVertexLocation, [in] UINT StartInstanceLocation );
Number of indices read from the index buffer for each instance.
Number of instances to draw.
The location of the first index read by the GPU from the index buffer.
A value added to each index before reading a vertex from the vertex buffer.
A value added to each index before reading per-instance data from a vertex buffer.
A draw API submits work to the rendering pipeline.
Instancing may extend performance by reusing the same geometry to draw multiple objects in a scene. One example of instancing could be to draw the same object with different positions and colors. Instancing requires multiple vertex buffers: at least one for per-vertex data and a second buffer for per-instance data.
The second buffer is needed only if the input layout that you use has elements that use D3D11_INPUT_PER_INSTANCE_DATA as the input element classification buffer for per-instance data.