Databases
StackOverflow2013
Postsdbo
POWindows uses Point sampling when stretching from a DirectX BackBuffer to the WIndow
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POWindows uses Point sampling when stretching from a DirectX BackBuffer to the WIndow
    primarykey
    data
    text
    <p>Windows7 is using point filtering to stretch from my DirectX9 back-buffer to the window client area. When the window is resized the artifacts from the stretching look very bad. We can avoid this by changing the back buffer size, but that requires calling IDirect3DDevice9::Reset(). This results in a black screen and a small delay while resizing is happening.</p> <p>Is there any way to improve the filtering method windows uses? Or, Is there any way to update the window from a different DirectX surface such as a Render Target? </p> <hr> <p>Im using unmanaged C++ DirectX code. Say I have a 1280 x 720 back buffer surface:</p> <pre><code>D3DPRESENT_PARAMETERS presentParams; presentParams.BackBufferWidth = 1280; presentParams.BackBufferHeight = 720; gD3D-&gt;CreateDevice( 0, D3DDEVTYPE_HAL, hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &amp;presentParams, &amp;pD3D9Device); </code></pre> <p>Yet I have a 1920 x 1080 window:</p> <pre><code>hWnd = CreateWindowExA(NULL, "WindowClass", winName, flags, 0, 0, 1920, 1080, NULL, NULL, hInstance, NULL); </code></pre> <p>When I call Present() windows will stretch my DirectX back buffer to the window. However their stretch doesn't appear to perform any filtering.</p> <pre><code>pD3D9Device-&gt;Present(NULL, NULL, NULL, NULL); </code></pre> <p>I can resize the backbuffer, but that requires a call to Reset() and <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/bb174425%28v=vs.85%29.aspx" rel="nofollow">Reset()</a> causes video memory surfaces to be lost.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USJustinB
    1. USJustinB
    plurals
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POWindows uses Point sampling when stretching from a DirectX BackBuffer to the WIndow
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POWindows uses Point sampling when stretching from a DirectX BackBuffer to the WIndow
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI remvoed the `windows` and `windows-7` tags, because they're meaningless. The question is about `DirectX9`, which is obviously Windows-specific, and `DirectX` is doing the sampling/rendering, not Windows itself (if Windows did it, you wouldn't need DirectX).
      singulars
      1. POWindows uses Point sampling when stretching from a DirectX BackBuffer to the WIndow
      1. USKen White
    2. COWindows is just doing the stretch blt (after rendering) to the window.
      singulars
      1. POWindows uses Point sampling when stretching from a DirectX BackBuffer to the WIndow
      1. USJustinB
    3. COThe usual way is to make the back buffer and window the same size - if you can't change the buffer, change the window. I presume DirectX is using the fastest possible way to get the image to the window, which involves no filtering. You can minimize the distortion by making the buffer an integer division of the window size.
      singulars
      1. POWindows uses Point sampling when stretching from a DirectX BackBuffer to the WIndow
      1. USMark Ransom
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload