d3dx9_xx.dll files

[iron2000]

What are those files?
29 came with MPC-HC and on a search of my PC I found 24 to 33 already in it.

Do I really need so many of them?

[clsid]

They are part of DirectX.

[Kado]

Those files are part of DirectX9.0. That file is included in MPC in case you don't have it, is necessary in case of advanced dx9 features like image rotation and pixelshaders or something else. I recommend you update DirectX to it's latest version :DirectX 9.0c April 2007. (http://download.microsoft.com/download/2/9/8/298c04e4-9b99-4b16-8a69-5ab32330a5c7/directx_apr2007_redist.exe)

EDIT: Oops, clsid beat me to it....

[burfadel]

Yes, those files are from newer releases of Directx! Directx is released every two months, and now covers XP & vista as well (yes Directx 10 extensions are already out and included in Directx for Vista). It does not add Directx 10 support to XP, but if you download the redistributable version (no real point, but hey), you can see the same types of files except with 'd3dx10_xx.dll' instead. These don't provide benefits for current directx apps&games, only those that support the new extensions. The next release should be in early-ish June.

The complete file list in the current redistributable is below. The redistributable just means it has all the components so you can run the same setup on Xp & Vista, 32 & 64 bits! For Vista it would only really install the dx10 components from the dx10 cab files below.

04/04/2007 18:48 1,348,242 Apr2005_d3dx9_25_x64.cab
04/04/2007 18:48 1,079,850 Apr2005_d3dx9_25_x86.cab
04/04/2007 18:48 1,398,718 Apr2006_d3dx9_30_x64.cab
04/04/2007 18:48 1,116,109 Apr2006_d3dx9_30_x86.cab
04/04/2007 18:48 917,318 Apr2006_MDX1_x86.cab
04/04/2007 18:48 4,163,518 Apr2006_MDX1_x86_Archive.cab
04/04/2007 18:48 180,021 Apr2006_XACT_x64.cab
04/04/2007 18:48 133,991 Apr2006_XACT_x86.cab
04/04/2007 18:48 87,989 Apr2006_xinput_x64.cab
04/04/2007 18:48 46,898 Apr2006_xinput_x86.cab
04/04/2007 19:04 702,212 APR2007_d3dx10_33_x64.cab
04/04/2007 19:04 699,465 APR2007_d3dx10_33_x86.cab
04/04/2007 19:04 1,610,958 APR2007_d3dx9_33_x64.cab
04/04/2007 19:04 1,609,639 APR2007_d3dx9_33_x86.cab
04/04/2007 19:04 199,366 APR2007_XACT_x64.cab
04/04/2007 19:04 154,825 APR2007_XACT_x86.cab
04/04/2007 19:04 100,417 APR2007_xinput_x64.cab
04/04/2007 19:04 56,902 APR2007_xinput_x86.cab
04/04/2007 18:48 1,351,430 Aug2005_d3dx9_27_x64.cab
04/04/2007 18:48 1,078,532 Aug2005_d3dx9_27_x86.cab
04/04/2007 18:48 183,863 AUG2006_XACT_x64.cab
04/04/2007 18:48 138,195 AUG2006_XACT_x86.cab
04/04/2007 18:48 88,102 AUG2006_xinput_x64.cab
04/04/2007 18:48 47,018 AUG2006_xinput_x86.cab
04/04/2007 18:48 1,156,363 BDANT.cab
04/04/2007 18:48 976,020 BDAXP.cab
04/04/2007 18:48 1,358,864 Dec2005_d3dx9_28_x64.cab
04/04/2007 18:48 1,080,344 Dec2005_d3dx9_28_x86.cab
04/04/2007 18:48 213,767 DEC2006_d3dx10_00_x64.cab
04/04/2007 18:48 192,680 DEC2006_d3dx10_00_x86.cab
04/04/2007 18:48 1,572,114 DEC2006_d3dx9_32_x64.cab
04/04/2007 18:48 1,575,336 DEC2006_d3dx9_32_x86.cab
04/04/2007 18:48 193,435 DEC2006_XACT_x64.cab
04/04/2007 18:48 146,559 DEC2006_XACT_x86.cab
04/04/2007 18:48 77,160 DSETUP.dll
04/04/2007 18:48 1,673,576 dsetup32.dll
04/04/2007 19:04 45,305 dxdllreg_x86.cab
04/04/2007 18:48 13,265,040 dxnt.cab
04/04/2007 18:48 503,144 DXSETUP.exe
04/04/2007 18:48 85,881 dxupdate.cab
04/04/2007 18:48 1,248,387 Feb2005_d3dx9_24_x64.cab
04/04/2007 18:48 1,014,113 Feb2005_d3dx9_24_x86.cab
04/04/2007 18:48 1,363,684 Feb2006_d3dx9_29_x64.cab
04/04/2007 18:48 1,085,608 Feb2006_d3dx9_29_x86.cab
04/04/2007 18:48 179,247 Feb2006_XACT_x64.cab
04/04/2007 18:48 133,297 Feb2006_XACT_x86.cab
04/04/2007 18:48 198,275 FEB2007_XACT_x64.cab
04/04/2007 18:48 151,583 FEB2007_XACT_x86.cab
04/04/2007 18:48 1,336,890 Jun2005_d3dx9_26_x64.cab
04/04/2007 18:48 1,065,813 Jun2005_d3dx9_26_x86.cab
04/04/2007 18:48 181,745 JUN2006_XACT_x64.cab
04/04/2007 18:48 134,631 JUN2006_XACT_x86.cab
04/04/2007 18:48 86,925 Oct2005_xinput_x64.cab
04/04/2007 18:48 46,247 Oct2005_xinput_x86.cab
04/04/2007 18:48 1,413,862 OCT2006_d3dx9_31_x64.cab
04/04/2007 18:48 1,128,177 OCT2006_d3dx9_31_x86.cab
04/04/2007 18:48 183,321 OCT2006_XACT_x64.cab
04/04/2007 18:48 138,977 OCT2006_XACT_x86.cab