# Using FramebufferOES
**URL:** https://forums.imgtec.com/t/using-framebufferoes/280
**Category:** PowerVR Insider
**Tags:** pvrvframe
**Created:** [March 12, 2009, 6:02pm UTC](https://forums.imgtec.com/t/using-framebufferoes/280 "2009-03-12T18:02:19Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@warmi](https://forums.imgtec.com/u/warmi)
#### Post date: [March 12, 2009, 6:02pm UTC](https://forums.imgtec.com/t/using-framebufferoes/280/1 "2009-03-12T18:02:19Z")
I am attempting to use FramebufferOES extension using the Emulator SDK (Windows - OGLES-1.1\_WINDOWS\_PCEMULATION\_2.04.24.0765) and I am getting linker errors:
LNK2019: unresolved external symbol \_\_imp\_\_glDeleteFramebuffersOES referenced in function "
...
My code is linking to libgles\_cm.lib , the includes are there ( it does compile) so I am not entirely sure what else should I do to get this going ...
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### Author:  [@warmi](https://forums.imgtec.com/u/warmi)
#### Post date: [March 13, 2009, 1:41am UTC](https://forums.imgtec.com/t/using-framebufferoes/280/2 "2009-03-13T01:41:24Z")
Uh .. never mind .. I see only required extensions are exported within the emulator library.
So I am attempting to load bunch of them using Tool's CPVRTglesExt class and the one I am after . .. GL\_OES\_framebuffer\_object is not loading.
I was able to load GL\_OES\_matrix\_palette, GL\_EXT\_multi\_draw\_arrays and couple of others but not GL\_OES\_framebuffer\_object.
I am testing this on a machine equipped with GeForce 8800 GTX, so I would think it is not a host system limitation.
Any ideas ?
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### Author:  [@xmas](https://forums.imgtec.com/u/xmas)
#### Post date: [March 13, 2009, 1:05pm UTC](https://forums.imgtec.com/t/using-framebufferoes/280/3 "2009-03-13T13:05:29Z")
There is a bug in the PC emulation library affecting GL\_OES\_framebuffer\_object which we hope to resolve soon.
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### Author:  [@whorfin](https://forums.imgtec.com/u/whorfin)
#### Post date: [April 1, 2009, 4:24pm UTC](https://forums.imgtec.com/t/using-framebufferoes/280/4 "2009-04-01T16:24:43Z")
Any word on this? I was hoping that new release was going to include the fix, but I guess not...
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### Author:  [@xmas](https://forums.imgtec.com/u/xmas)
#### Post date: [April 7, 2009, 10:37am UTC](https://forums.imgtec.com/t/using-framebufferoes/280/5 "2009-04-07T10:37:42Z")
This should actually be fixed in the latest release. The bug reference for this issue is BRN26804.
What failure are you seeing exactly?
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### Author:  [@digi123](https://forums.imgtec.com/u/digi123)
#### Post date: [April 14, 2009, 3:44am UTC](https://forums.imgtec.com/t/using-framebufferoes/280/6 "2009-04-14T03:44:30Z")
I also can’t seem to get access to glGenFrameBufferOES. The only extensions found are the following:
GL\_OES\_byte\_coordinates GL\_OES\_compressed\_paletted\_texture GL\_OES\_fixed\_point GL\_OES\_point\_size\_array GL\_OES\_point\_sprite GL\_IMG\_user\_clip\_planes GL\_OES\_matrix\_palette GL\_OES\_draw\_texture GL\_OES\_read\_format GL\_OES\_single\_precision GL\_IMG\_texture\_compression\_pvrtc GL\_IMG\_texture\_env\_enhanced\_fixed\_function GL\_ARB\_texture\_env\_combine GL\_ARB\_texture\_env\_dot3 GL\_OES\_matrix\_get GL\_IMG\_vertex\_program GL\_IMG\_read\_format GL\_IMG\_texture\_format\_BGRA8888 GL\_EXT\_multi\_draw\_arrays
I’m using this version of the sdk: OGLES-1.1\_WINDOWS\_PCEMULATION\_2.04.24.0811
Are frame buffers/pbuffers not available in opengl es 1.1?
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### Author:  [@jacekc](https://forums.imgtec.com/u/jacekc)
#### Post date: [April 15, 2009, 3:37pm UTC](https://forums.imgtec.com/t/using-framebufferoes/280/7 "2009-04-15T15:37:23Z")
Hi,
Please make sure that you are using emulation library in version 4.2. To do it see into output of glGetString(GL\_RENDERER) which should contain “PowerVR PVRVFrame 4.2”. Note that extension are determined by chosen hadrware profile which can be set in pcviewer\_es1.cfg (ES1) or pcviewer\_es2.cfg (es2) in directory where are you pcemulation libraries used for running given es application. More about configuration files can be found in pvrvframe manual.
Regards,
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### Author:  [@warmi](https://forums.imgtec.com/u/warmi)
#### Post date: [April 15, 2009, 9:10pm UTC](https://forums.imgtec.com/t/using-framebufferoes/280/8 "2009-04-15T21:10:58Z")
I can confirm that the extension is loading just fine with the latest SDK.
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### Author:  [@flamaros](https://forums.imgtec.com/u/flamaros)
#### Post date: [May 27, 2009, 12:57pm UTC](https://forums.imgtec.com/t/using-framebufferoes/280/9 "2009-05-27T12:57:02Z")
Hi,
I have the same probleme, the GL\_OES\_framebuffer\_object extension can’t be loaded.
I have installed this packadge : OGLES-1.1\_WINDOWS\_PCEMULATION\_2.04.24.0811.msi
The glGetString(GL\_RENDERER) geve me "PowerVR MBX1 With VGP - GENERIC PROFILE"
How can I set the hardware profile with pcviewer\_es1.cfg?
My nvidia Quadro FX 570 can be the limitation? I just have installed the lastest drivers.
Thank for your answers.
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### Author:  [@GordonMaclachlan](https://forums.imgtec.com/u/GordonMaclachlan)
#### Post date: [May 27, 2009, 3:44pm UTC](https://forums.imgtec.com/t/using-framebufferoes/280/10 "2009-05-27T15:44:15Z")
To change the config, locate the pcviewer\_es1.cfg file and exit it with a text editor. Comment/Remove the hash sign (#) in front of the config you want and place a # in front of the MBXLITE (or whatever was the currently active profile).
This system should be made a little easier in the future.
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### Author:  [@flamaros](https://forums.imgtec.com/u/flamaros)
#### Post date: [May 28, 2009, 7:16am UTC](https://forums.imgtec.com/t/using-framebufferoes/280/11 "2009-05-28T07:16:39Z")
Thx a lot it works.
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### Author:  [@flamaros](https://forums.imgtec.com/u/flamaros)
#### Post date: [May 28, 2009, 12:22pm UTC](https://forums.imgtec.com/t/using-framebufferoes/280/12 "2009-05-28T12:22:39Z")
I am using it to draw in a texture.
It works fine on my computer now with the emulation of OpenGL ES, but the iPhone render a black screen. ![Angry]() I don’t understand because I don’t have any openGL error, and buffers name are valid.
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### Author:  [@GordonMaclachlan](https://forums.imgtec.com/u/GordonMaclachlan)
#### Post date: [May 28, 2009, 12:49pm UTC](https://forums.imgtec.com/t/using-framebufferoes/280/13 "2009-05-28T12:49:04Z")
I’m not sure if this is relevant, but in order to rebind the actual framebuffer on the iPhone you need to use a value of 1 and not 0 as on most platforms.
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### Author:  [@flamaros](https://forums.imgtec.com/u/flamaros)
#### Post date: [May 28, 2009, 2:08pm UTC](https://forums.imgtec.com/t/using-framebufferoes/280/14 "2009-05-28T14:08:17Z")
Your are my god, it solve my problem.
Do you know if we can get the right value to rebind the normal framebuffer with an openGL ES function or macro? I actually use a #ifdef but it's not beautiffull.
Can I use glIsFramebufferOES to get the first valid framebuffer?
flamaros2009-05-29 09:35:45
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### Author:  [@GordonMaclachlan](https://forums.imgtec.com/u/GordonMaclachlan)
#### Post date: [June 1, 2009, 7:56am UTC](https://forums.imgtec.com/t/using-framebufferoes/280/15 "2009-06-01T07:56:02Z")
I’ve been using an #ifdef to define a constant.
glIsFrameBuffer will tell you whether you have a framebuffer but not if it’s the screen. Besides, using a constant or #define will have no runtime overhead.
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### Author:  [@flamaros](https://forums.imgtec.com/u/flamaros)
#### Post date: [June 2, 2009, 7:39am UTC](https://forums.imgtec.com/t/using-framebufferoes/280/16 "2009-06-02T07:39:38Z")
Ok, thx for your informations.
Before I saw bad performance problems, I didn’t think to use such technique to do a mini-game based on drawing, but now we have a new feature in our engine ![Wink]().
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### Author:  [@dungpa](https://forums.imgtec.com/u/dungpa)
#### Post date: [June 15, 2009, 3:20am UTC](https://forums.imgtec.com/t/using-framebufferoes/280/17 "2009-06-15T03:20:31Z")
Hi all,
I have dealt with the same problem. However, your solution doest not work ![Confused](). When I try to run with GLES1 "SUPPORT\_ALL " config, supported extensions are: "GL\_OES\_byte\_coordinates GL\_OES\_fixed\_point GL\_OES\_single\_precision
GL\_OES\_read\_format GL\_IMG\_read\_format GL\_OES\_point\_sprite
GL\_OES\_compressed\_ETC1\_RGB8\_texture GL\_OES\_compressed\_paletted\_texture
GL\_OES\_depth24 GL\_OES\_rgb8\_rgba8 GL\_OES\_stencil8
GL\_IMG\_texture\_compression\_pvrtc GL\_OES\_mapbuffer GL\_OES\_matrix\_palette
GL\_OES\_point\_size\_array GL\_OES\_draw\_texture GL\_EXT\_multi\_draw\_arrays
GL\_IMG\_vertex\_program GL\_IMG\_texture\_format\_BGRA8888"
It’s pity that no support for framebuffer extension. glGetString(GL\_RENDERER) call gives me: “PowerVR PVRVFrame 4.2 Generic Profile (Host GL: ‘Intel 945 G’) SDK Build: 2.04.24.0809”
I believe that I downloaded and installed the latest version of PowerVR SDK 1.1.
Does the graphics card of my PC affect the present of framebuffer extension, I can’t think of any other causes. Can anyone give me a hint?
Thank you!
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### Author:  [@warmi](https://forums.imgtec.com/u/warmi)
#### Post date: [June 15, 2009, 6:09am UTC](https://forums.imgtec.com/t/using-framebufferoes/280/18 "2009-06-15T06:09:02Z")
dungpa wrote:
Hi all,
Does the graphics card of my PC affect the present of framebuffer extension, I can't think of any other causes. Can anyone give me a hint?
Thank you!
Of course it does ... after all, PVRVFrame 4 is just a fancy wrapper around your local OpenGL implementation.
What kind of graphic card do you have ?
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### Author:  [@dungpa](https://forums.imgtec.com/u/dungpa)
#### Post date: [June 16, 2009, 6:41am UTC](https://forums.imgtec.com/t/using-framebufferoes/280/19 "2009-06-16T06:41:59Z")
Thanks warmi,
I have fixed my problem. My graphics card is an onboard intel one. When I plug a new Geforce 6200 graphics card, happily it supports framebuffer extension immediately.
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### Author:  [@shiftz](https://forums.imgtec.com/u/shiftz)
#### Post date: [October 4, 2009, 10:24pm UTC](https://forums.imgtec.com/t/using-framebufferoes/280/20 "2009-10-04T22:24:38Z")
I need help. I cannot get FBO extension work. I have HD4850 and this cfg file:
# =====\> GLES1 config file.\<=====
# Uncomment the profile you would like to use.
# If more than one profile is uncommented than
# the first one will be used.
#MBXLITE
#MBX\_VGP
#MBXLITE\_VGPLITE
#SGX530
#SGX535
SUPPORT\_ALL
glGetString(GL\_EXTENSIONS) lists me:
GL\_OES\_byte\_coordinates GL\_OES\_fixed\_point GL\_OES\_single\_precision GL\_OES\_matrix\_get GL\_OES\_read\_format GL\_IMG\_read\_format GL\_OES\_point\_sprite GL\_OES\_query\_matrix GL\_OES\_compressed\_paletted\_texture GL\_IMG\_texture\_compression\_pvrtc GL\_OES\_matrix\_palette GL\_OES\_point\_size\_array GL\_OES\_draw\_texture GL\_IMG\_vertex\_program GL\_IMG\_texture\_format\_BGRA8888
and glGetString(GL\_RENDERER) : PowerVR PVRVFrame 5.1 MBX with VGP (Host GL: `ATI Radeon HD 4800 Series`) SDK Build: 2.05.25.0782.
Is this AMD videocard issue?
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