directx

For what purposes are we using Model View Projection Matrix? Why do shaders require Model View Projection Matrix? The model, view and projection matrices are three separate matrices. Model maps from an object's local coordinate space into world space, view from world space to camera space, projection from camera to screen. If you compose all three, you can use the one result to map all the way from object space to screen space, making you able to work out what you need to pass on to the next stage of a programmable pipeline from the incoming vertex positions. In the fixed functionality

This boggles me. DirectX bypasses everything and talks directly to the device driver, thus GDI and other usual methods won't work - unless Aero is disabled (or unavailable), all that appears is a black rectangle at the top left of the screen. I have tried what other have suggested on several forums, using DirectX to get the back buffer and save it, but I get the same result: device->GetFrontBufferData(0, surface); D3DXSaveSurfaceToFile("fileName", D3DXIFF_BMP, surface, NULL, NULL); Is there any way to get a screenshot of another full-screen DirectX application when Aero is enabled? Have a look

I have a renderer using directx and openGL, and a 3d scene. The viewport and the window are of the same dimensions. How do I implement picking given mouse coordinates x and y in a platform independent way? Andreas Brinck If you can, do the picking on the CPU by calculating a ray from the eye through the mouse pointer and intersect it with your models. If this isn't an option I would go with some type of ID rendering. Assign each object you want to pick a unique color, render the objects with these colors and finally read out the color from the framebuffer under the mouse pointer. EDIT: If the

I have a DirectShow graph to render MPEG2/4 movies from a network stream. When I assemble the graph by connecting the pins manually it doesn't render. But when I call Render on the GraphBuilder it renders fine. Obviously there is some setup step that I'm not performing on some filter in the graph that GraphBuilder is performing. Is there any way to see debug output from GraphBuilder when it assembles a graph? Is there a way to dump a working graph to see how it was put together? Any other ideas for unraveling the mystery that lives in the DirectShow box? Thanks! -Z You can watch the graph you

THE PROBLEM: When I grab the resize border of my Windows app, especially the top or left borders, and resize the window, the contents of the window do resize "live" as I drag, but they resize in a hideous manner that looks like a blatant bug to even the most novice user: the contents at the opposite edge of the window from the edge I am dragging jitter/flicker/jump back and forth wildly. Depending on the situation, the phenomenon may look like: contents that seem to walk off the edge of the window and snap back when we slow down or stop dragging contents that seem to pull into the window,

参考解决方案： https://blog.csdn.net/lsqingfeng/article/details/90063824 【下载这个工具修复，一键搞定-】其他其他很多方法都无效，搞来搞去最后这个一键修复了 传送门： DirectX修复工具 下载地址： https://www.crsky.com/soft/31471.html 来源： https://blog.csdn.net/weixin_43343144/article/details/98882647