Improve performance - There is a working method

[hl2mp]

Transfer the render to the render thread, and change the camera via the shader API when sending it to the command list.

MainThread

• RenderView change camera origin angles

RenderThread
Hooking functions in shaderapidx9.dll

• MatrixMode(MATERIAL_VIEW)
• LoadMatrix(change camera correct only angles)

D3D9 functions
Present()
{
Submit
WaitGetPoses
}

mat_queue_mode 2 will work correctly

I did this in my mod for hl2dm VR.