Understood. I was more speaking to the G1 specifically, not Android. The 8 megatexel GPU with no floating point on the CPU to be able to support it confuses me.
On May 18, 4:57 pm, Dianne Hackborn <[email protected]> wrote: > Android is not a device, it is a software platform. I am sure in the future > there will be devices that have FPUs. In the meantime however (and in the > future to target the broadest range of devices), your best bet is probably > to use fixed point computations. > > > > On Mon, May 18, 2009 at 2:52 PM, Robert Green <[email protected]> wrote: > > > Here's a question that some marketing department somewhere should > > answer: > > > How are we supposed to develop 3D games that can compete with the > > iPhone in visual quality, speed and complexity without an FPU? > > > On May 18, 2:56 pm, Dianne Hackborn <[email protected]> wrote: > > > Not that I know of. > > > > On Mon, May 18, 2009 at 12:07 PM, Yin Chen <[email protected]> > > wrote: > > > > Thank you Dianne. > > > > > My second question would be: so far, are there any android based cell > > > > phones that do have a floating point processor? > > > > > Thanks! > > > > > - > > > > Yin > > > > > Dianne Hackborn wrote: > > > > > The G1 has no floating point hardware you can use. > > > > > On Sun, May 17, 2009 at 5:03 PM, Yin <[email protected]> < > > [email protected]> wrote: > > > > > Hi all, > > > > > I have been searching about the floating point support on G1 phone > > > > (aka the HTC Dream phone) for a few hours. > > > > > So far, my conclusion is that the ARM-based Qualcomm MSM7201 CPU does > > > > not have VFP (floating point coprocessor) and therefore floating point > > > > calculations have to be done via software-float. > > > > > This is quite disappointing as I am interested in developing > > > > applications with heavy math. > > > > > However, I also notice that the Qualcomm CPU has QDSP4000™ and > > > > QDSP5000™ high-performance digital signal processors (DSP), according > > > > tohttp://www.qctconnect.com/products/msm_7201.html > > > > > Therefore, here is my question: would it be possible to leverage the > > > > DSP modules in the MSM7201 CPU to do the floating point math? > > > > > Also, I would like to develop the heavy-math modules in C/C++ and call > > > > it via JNI, and so I just want to double-check whether this is a > > > > feasible approach. > > > > > Thanks! > > > > > - > > > > Yin > > > > -- > > > Dianne Hackborn > > > Android framework engineer > > > [email protected] > > > > Note: please don't send private questions to me, as I don't have time to > > > provide private support, and so won't reply to such e-mails. All such > > > questions should be posted on public forums, where I and others can see > > and > > > answer them. > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > Note: please don't send private questions to me, as I don't have time to > provide private support, and so won't reply to such e-mails. All such > questions should be posted on public forums, where I and others can see and > answer them. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
