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knobby67

Member Since 01 Nov 2005
Offline Last Active Aug 30 2012 10:01 AM

Topics I've Started

SDL sound delay

28 August 2012 - 07:47 AM

Hi all
I'm working on some opengl demo stuff (ubuntu opengl sdl), and have had a couple of concerns and am unsure if it's drivers or a RAM issue. I know it's not my sw as it runs on my Nvidia laptop OK and my friends Nvidia PC.
The PC I'm testing on is a ATI Fusion using catalysis drivers. The board has 2GB of RAM, I've split the RAM via the bios to have 1.5GB RAM and 512MB of video RAM, going more that 512 stops ubuntu working correctly, less that 512 nand opend gl slows right down.
Basically what happens is when I'm running my software the sound(SDL_Mixer) is always about 1/3 of a second behind on ATI (not nvidia), so I shoot and the soound happens a split second after the event.
Also the frame rate is good, however every so often for what seems no reason ( ie not high poly model or not lots of shaders ) the frame rate seems to drop right down, this lasts 3-10 seconds then goes up to full speed.
Could this be a result of only having 2GB of RAM? If I go up to 4 will it help? Has anyone else had these issues?
Thanks in advance!

starting opengl 3/4 issues

28 May 2012 - 10:11 AM

Hi All,
I'm just about to start to learn opengl 3 (4). So I've read a couple of tutorials on the lighthouse 3d site and decided to download their framework to help out. I also downloaded the sample for this. However when I try to compile I get large numbers of errors such as
‘glProgramUniform1uiv’ was not declared in this scope
error: ‘GL_DOUBLE_MAT2’ was not declared in this scope


I'm guessing my PC cannot run opengl 3? However from what I've read on the net my card should run this.
I'm using ubuntu 12.04, my card is a nvidia 8600GT. My drivers, which Ubuntu installed are NVIDIA 280.13.

I'm linking with -lGLEW -lIL -lILU -lILUT -lglut

Does anyone know how I can find out if my card runs opengl 3 and if my drivers can run it.

blender render makes textures vanish

13 December 2011 - 01:15 PM

Hi All,
I've downloaded a sketch up model outputted to .obj, then loaded into blender. All is great, I can see the model and all the textures. However, when I try to render most of the textures are missing. I can't understand how the 3d view shows all textures but render only shows about 25% of them. Can anyone advise how I can get the textures to appear? They must be linked / mapped as the 3d view shows them so I'm a puzzeled how render doesn't work.

Thanks in advance :)

importing collada into blender 2.5

20 November 2011 - 05:46 AM

Hi All,
I've just updated my ubuntu and it's changed blender from 2.4 to 2.5, suddenly collada import has vanished, even going into user preferences addons import export the add ons go from biovision straight to directx no sign of collada? Can anyone advise what I'm doing wrong? Thanks

blender map inside of object?

14 November 2011 - 12:03 PM

Hi all,
I've made a sky dome, produces the UV map, however (naturally) when I apply it it maps to the outside of the object. Can anyone tell me how to map onto the inside? Thanks

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