[DX9 C++] Vertex Position

Graphics and GPU Programming Programming

Started by ArgusMaker June 06, 2011 11:36 AM

2 comments, last by Buckeye 12 years, 10 months ago

102

Author

June 06, 2011 11:36 AM

Hi there!
I was wondering if you can get the coordinates in the window of a 3d rendered vertex, in other words where in the window directx draws the vertex.

kauna

2,925

June 06, 2011 11:54 AM

Hi there!
I was wondering if you can get the coordinates in the window of a 3d rendered vertex, in other words where in the window directx draws the vertex.

Sure you can get them in many ways. One way is to transform your 3d position with the world-view-projection matrices and doing division by the w component. Then scale the result with half screen width and half height and offset the coordinate with the same values. Now this is the position in the framebuffer.

What are you trying to accomplish?