May have to do with image buffer support. QC expects opencl to be able to process textures as buffers, but not all gpus that support opencl support that feature if I recall correctly.
Sent from my iPhone On Jul 23, 2011, at 4:36 PM, Paul Harrison <harrisonpa...@yahoo.com> wrote: > I have constructed a simple .qtz composition using OpenCL Context Info patch > which reports that my iMac has an OpenCl > Device Count of 1, > Device Type of CL_DEVICE_CPU, and > Name of "Intel(R) Core(TM) i& CPU 860 @ 2.80GHz. > > But, the iMac'a system info reports under Graphics/Displays that it also > sports an > ATI Radeon HD 4850: > Chipset Model: ATI Radeon HD 4850 > Type: GPU > Bus: PCIe > PCIe Lane Width: x16 > VRAM (Total): 512 MB > Vendor: ATI (0x1002) > Device ID: 0x944a > Revision ID: 0x0000 > ROM Revision: 113-B9110C-425 > EFI Driver Version: 01.00.383 > > And the Apple website http://www.apple.com/macosx/specs.html says: > > "OpenCL > requires one of the following graphics cards or graphics processors: > > NVIDIA GeForce 320M, GeForce GT 330M, GeForce 9400M, GeForce 9600M GT, > GeForce 8600M GT, GeForce GT 120, GeForce GT 130, GeForce GTX 285, GeForce > 8800 GT, GeForce 8800 GS, Quadro FX 4800, Quadro FX5600 > ATI Radeon HD 4670, ATI Radeon HD 4850, Radeon HD 4870, ATI Radeon HD 5670, > ATI Radeon HD 5750, ATI Radeon HD 5770, ATI Radeon HD 5870 > AMD Radeon HD 6750M, AMD Radeon HD 6770M, AMD Radeon HD 6970M" > > Seeing as how the official apple list of OpenCL supported graphics processors > lists ATI Radeon HD 4850 and my machine reports having an ATI Radeon HD 4850 > installed, why does Quartz Composer (version 4.0 103.1) not report it in the > OpenCL Context Info? > > The machine is running Mac OS X Version 10.6.8. > > Paul > > > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Quartzcomposer-dev mailing list (Quartzcomposer-dev@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/quartzcomposer-dev/doktorp%40mac.com > > This email sent to dokt...@mac.com
_______________________________________________ Do not post admin requests to the list. They will be ignored. Quartzcomposer-dev mailing list (Quartzcomposer-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/quartzcomposer-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
