Tagged with android - NVIDIA Developer Forums

New libs

giveen — Mon, 14 May 2012 17:01:38 -0400

Are the libs inside /system/lib of the Ventana ICS image newly made or are they a hangover from Honeycomb.

rootfs tegra3 package

tankcr — Sat, 12 May 2012 07:03:05 -0400

Hi all, I am trying to build a Ubuntu for the TFP but I was wondering if there is a prebuilt rootfs package for the tegra3, and if not does anyone have any suggestions for building one?

Tegra Android Development Pack 1.0r6 Available

Stephen Jones — Fri, 20 Apr 2012 16:02:49 -0400

Hey Tegra Android Developers! At NVIDIA, we're always trying to simplify the Android development experience. The more apps you develop, the happier we are. The Tegra Android Development Pack makes it easy for you to setup and maintain an Android development environment.

This update to TADP includes support for Android SDK r18 and Android NDK r7c. This update to the NDK is significant for Tegra Android developers in that it includes an important fix for Tegra2-based devices, as well as a few additional fixes and improvements.

Android NDK r7b was not configured properly, resulting in crashes on non-NEON devices such as Tegra2-based devices, when trying to use certain floating-point functions (e.g., cosf, sinf, expf).

The latest version of the Tegra Android Development Pack is available here. To provide feedback, request additional features or report support issues, just reply to this post!

Profiling OpenGLES2 applications using a Acer ICONIA A500 device

sylvainmeunier — Tue, 24 Apr 2012 12:04:52 -0400

Hello,

I try to develop benchmarks for profiling accurately an Acer ICONIA A500 device (Tegra and Android 3.2.1). I currently focus on its graphics performances.

OpenGL provides the GL_ARB_timer_query extension for profiling the graphic pipeline. Unfortunately OpenGLES2 doesn't provide a similar extension. Am I wrong ?

I worked on two approaches:
- EGL_NV_system_time
- NVPerfHUD ES

EGL_NV_system_time

The first approach uses EGL_NV_system_time functions for querying the system time and glFinish for synchronizing driver and pipeline times.


startDate = eglGetSystemTimeNV();
//
// Some OpenGLES2 calls
// ...
glFinish();
endDate = eglGetSystemTimeNV();
//
// Some profiling stuffs
// ...

Unfortunately, a large part of the results seem distorted by some vsync issues. Do you have any ideas for dodging them ?

NVPerfHUD ES

The second approach is based on PerfHUD tools. This tool requires a recent Tegra Android OS image which has PerfHUD support but NVidia just provides some images for Ventana and Cardhu devices and Acer doesn't provide anything until now. Am I wrong ?

Following several posts on this forum (Post, Post...), I tried to retrieve missing libraries and scripts from Ventana system image but failed on a file system issue. This file isn't an ext4 file system nor an yaffs2 file system but a "basic" file system (see flash.cfg in Ventana image). Do you have any tips for solving it ?

Optimal vertex attribute formats for Tegra2/3?

clb — Thu, 10 May 2012 12:26:39 -0400

Hi,

I am trying to figure out what would be the most optimal vertex format to use for my vertex data. Does there exist somewhere a guide/tips on how to lay out data for best performance?

I am mostly comparing the performance guidelines to ones published for iOS ( http://developer.apple.com/library/ios/documentation/3DDrawing/Conceptual/OpenGLES_ProgrammingGuide/OpenGLES_ProgrammingGuide.pdf , page 65+), since I cannot find a similar document for Tegra2/3. Do such guidelines exist somewhere?

Specific questions:
- Does GL_FIXED carry a penalty as opposed to GL_FLOAT? Should I always use GL_FLOAT instead of GL_FIXED?
- Is there a performance difference on the order of laying out data with different semantics inside a single vertex. E.g. having pos/normal/uv versus pos/uv/normal, and loading them in different orders in the shaders. The iOS guide lists a preferred order, do similar rules apply here?
- Is there a performance hit if GL_UNSIGNED_BYTE data is not aligned to two bytes? or four bytes?
- Is there a performance hit if GL_UNSIGNED_SHORT data is not aligned to two bytes? or four bytes? iOS guides mention a performance hit if GL_UNSIGNED_SHORT is not aligned to four bytes, and suggests adding two bytes of padding. How about Tegra2/3?
- Is there a performance hit if GL_FLOAT data is not aligned to four bytes?
- Is it faster to pack vertex data fields inside a same attribute? E.g. with two sets of 2D UV coordinates, should I pack them into a single 4D {uv0.x uv0.y uv1.x uv1.y} attribute and separate in the shader?

What kind of other tips would you recommend? I am currently packing as much of my data into GL_UNSIGNED_BYTEs as possible, and am now worried about the misalignment of some data fields it causes.

If nothing else, I'll probably run some profiling to investigate this, but if people have done this already, would be great to hear the results.

Other related questions:
- Is there any practical difference between GL_DYNAMIC_DRAW and GL_STREAM_DRAW in the Tegra2/3 drivers? I am currently doing double-buffered (swapping between two created VB objects each frame) updates to a GL_STREAM_DRAW vertex buffer for my particles. Should I be double-buffering myself, or are the Tegra2/3 drivers already double-buffering/optimizing for me for per-frame updates if I specify GL_STREAM_DRAW?
- Do Tegra2/3 support Vertex Array Objects?

Thanks for the help!

To control i2c Bus on Tegra3 Cardhu Debug Board

LexHsieh — Thu, 10 May 2012 07:12:24 -0400

I will connect our sensor to the i2c bus of debug board of cardhu. I had registered all of the possible i2c bus as follows, but there is no signal in i2c bus of the debug board.

i2c_register_board_info(1, cardhu_i2c2_stk_board_info,
ARRAY_SIZE(cardhu_i2c2_stk_board_info));
i2c_register_board_info(2, cardhu_i2c2_stk_board_info,
ARRAY_SIZE(cardhu_i2c2_stk_board_info));
i2c_register_board_info(3, cardhu_i2c2_stk_board_info,
ARRAY_SIZE(cardhu_i2c2_stk_board_info));
i2c_register_board_info(4, cardhu_i2c2_stk_board_info,
ARRAY_SIZE(cardhu_i2c2_stk_board_info));
i2c_register_board_info(5, cardhu_i2c2_stk_board_info,
ARRAY_SIZE(cardhu_i2c2_stk_board_info));
i2c_register_board_info(PCA954x_I2C_BUS0, cardhu_i2c2_stk_board_info,
ARRAY_SIZE(cardhu_i2c2_stk_board_info));
i2c_register_board_info(PCA954x_I2C_BUS1, cardhu_i2c2_stk_board_info,
ARRAY_SIZE(cardhu_i2c2_stk_board_info));
i2c_register_board_info(PCA954x_I2C_BUS2, cardhu_i2c2_stk_board_info,
ARRAY_SIZE(cardhu_i2c2_stk_board_info));
i2c_register_board_info(PCA954x_I2C_BUS3, cardhu_i2c2_stk_board_info,
ARRAY_SIZE(cardhu_i2c2_stk_board_info));

Our driver can be loaded, but once the driver issue the i2c command, the following error log appears:

[ 4.784547] tegra-i2c tegra-i2c.1: I2c error status 0x00000008
[ 4.790433] tegra-i2c tegra-i2c.1: no acknowledge from address 0x48
[ 4.796805] tegra-i2c tegra-i2c.1: Packet status 0x00010009

or

[ 6.937818] tegra-i2c tegra-i2c.2: i2c transfer timed out, addr 0x0070, data 0x04
[ 6.945566] tegra-i2c tegra-i2c.2: I2c error status 0x00000004
[ 6.951453] tegra-i2c tegra-i2c.2: arbitration lost during communicate to add 0x70
[ 6.959219] tegra-i2c tegra-i2c.2: Packet status 0x00010003

Is there anyone know how to setup the i2c bus on debug board?
Thanks in advance.

Is 1080p HDMI output possible on Tegra3?

clb — Thu, 10 May 2012 05:24:48 -0400

Hi,

I am investigating the different options that are possible when using a HDMI link to an external display. Looking at how it currently works, it seems that the main display is always mirrored to the HDMI display, giving a 1280x800 res. This is quite surprising, since the Asus Transformer Prime adverts claim it to be able to play back 1080p video on HDMI. What gives?

I'm now pondering whether any of the following scenarios are possible:
- Extend/separate display mode. Use Prime screen as 1280x800 display and use the other display as an extended monitor in 1920x1080 or 1920x1200 mode, whatever is the max. res for that display. Can I simultaneously render different content to both displays using GLES2? This would give full control and support to specify what content is displayed on which screen.
- Turn off the small 1280x800 display, only use the large external 1920x1080 display. Render natively to the 1920x1080 display without upscaling from a smaller resolution. Is this possible? I notice that Shadowgun is not doing this at least, but the game is played in 1280x800 res on the HDMI display, which the monitor stretches to fit the screen.

If neither of these scenarios are doable, do you know if that is only due to software limitations, or are there potentially some hardware restrictions that will limit Tegra3 to always mirroring a single max. 1280x800 display?

Thanks for any help!

How to access NV_ OpenGL ES extension for stereoscopic output?

dsewtz — Tue, 24 Jan 2012 06:41:49 -0500

I would be very much interested in a documentation on how to access the opengl es extension for stereoscopic output. I assume it's NV_MULTIVIEW_DRAW_BUFFERS ?
(As seen on the CES: Attached Asus Transformer Prime through HDMI1.4 to 3DMonitor)

Tegra VI/CSI interface

Jens Andersen — Sat, 31 Dec 2011 07:49:13 -0500

Hi,
I am attempting to get a camera working on a tegra board.
The camera is connected through the Tegra-isp port, using Parallel 8-bit VI interface.
I am looking to use the CHROMIUM provided V4L2 interface, but this is not really relevant to my query.

I have the public TRM, but this only seems to document the serial CSI interface and a LOT of registers are missing.
I've attached a list of all the registers mentioned by the V4L2 driver, and comparing that to the documentation available, not even all the CSI registers are documented.

I have also verified that this information is not available in the private TRM through third-party contacts.

Is it possible to get any kind of documentation on these VI registers? It doesn't appear to me like this is something that is required to be kept secret, but I understand that it doesn't appear to be properly documented at the moment, so even sparse documentation with just possible values would be a huge help!

How to install new version of Tegra Android Developer Pack

AKryshen — Sat, 05 May 2012 06:22:58 -0400

Hello,

What is the right way to install new version of Tegra Android Developer Pack if I have previous version already installed? Should I uninstall previous version prior installing new one? In particular I am not interesting in having multiple versions of Pack being installed simultaneously and want to work only with latest version.

It seems that installer is not aware about previous installations and this is why I am asking.

Thanks in advance!

NVIDIA Debug Manager for Eclipse 12.0.0 - Breakpoints Never Hit

bThere — Sat, 28 Apr 2012 03:52:16 -0400

I have installed the eclipse 14.0.1 plugin and configured it as per the tutorial

When I debug using the NVIDA debug configuration the app runs and stops on any java break points set but not on any C breakpoints *they remain gray dots*

As far as the config setup the main tab is pretty much left alone (defaults), the Shared Libraries are populated as my projects .../obj/local/armeabi, ../libsdebug directories with load symbols automatically checked

GDB Server is set to APK Bundled, all else default, I tried the system and that just failed immediately with could not connect to server

I am running on Ubuntu 32 bit, Eclipse 3.7.2, CDT 8.0.. , NDK r7c, SDK of the emulator is 9

No real errors, just never stops at the break points set inside the .c files

Is it possible to build Android Framework (with Tegra BSP) on Mac OS X?

sudhakar — Thu, 26 Apr 2012 20:28:32 -0400

I tried building Android 2.2 with Tegra BSP on Mac OS X, and got the following error:

/bin/bash: out/host/darwin-x86/bin/nvidl: cannot execute binary file

There are a couple of prebuilt executables in Tegra BSP, but they only exist for Linux and Windows, not Mac. Are there Mac versions of these files e.g. nvidl?

Tegra Development Pack not working with SDK and ADT 18?

skip — Wed, 18 Apr 2012 20:18:26 -0400

Hello,

I have downloaded the Tegra Android Developer Pack 1.0r5, have tried out the NVIDIA samples and written my own applications created with the help of app_create.sh and its nv_event option and everything worked fine.

As an improved Android emulator has been announced recently, I updated the SDK tools and the ADT plugin to version 18. There was a crash at the end of the update process, so I uninstalled ADT with the Eclipse plugin manager and installed the new version.

Now all these things seem up-to-date and I can compile NVIDIA's and my NDK applications. But when I try to run them on my Tegra 3 tablet, I receive the "Unfortunately [app] has stopped" error message. Logcat gives me the error "Unable to resolve superclass of [app]", I suppose the mentioned superclass is NvEventQueueActivity then.

Google led me to solutions for similar problems due to changes in SDK and ADT version 17. This didn't help me though, because I'm not using JAR files and the projects only have a libs folder anyway.

My question is now: Is it a known problem that the Tegra Development Pack and all the applications using NVIDIA's event framework don't work with the new SDK and ADT versions? If so, what could I do to my make it all work again (except for downgrading the tools again)?

TEGRA 3 GAMES

ayaz — Wed, 18 Apr 2012 00:12:14 -0400

Hi this is ayaz i just want to know why TEGRA 3 games is not available in UAE. i m using HTC one X i just buy this for tegra 3 games but now i feel that i F*** my self with TEGRA 3. can u plz tell me any TEGRA 3 game which is available in UAE?

NAND Flash Controller low level access

spw54 — Tue, 17 Apr 2012 16:11:01 -0400

Hello,

I'm working with a research group that deals with properties of NAND flash. One of the tests involves doing a reset that interrupts the program operation. This technique has been done with bare metal access to the NAND. We're investigating if this technique can be applied on a smartphone.

Basically I've been reading the NAND Flash Controller section of the Tegra TRM trying to determine if it can provide enough low level control to be able to send a reset command during a write. With the commands going through the Command Queue Processor would this be possible? Or is there a different way to do program and reset operations?

Any help is appreciated. Thank you.

how to access the tegra_camera device

sammirata — Fri, 13 Apr 2012 18:50:23 -0400

I would like to extract the raw video stream from the tegra_camera device (/dev/tegra_camera). Do you have a sample application I can use?
What format does it come as?
This is on a rooted asus transformer prime.

Tegra Support Levels

atulkpatel101 — Sun, 08 Apr 2012 13:46:10 -0400

Hi
New to Tegra.
What are the direct support criteria (min volumes etc) for Tegra? I qualify for to initiate direct sales contact (more than 100K units) but what about support? Will get direct suport from nVidia like the large SnartPhone OEMs get?
Any help will be greatly appreciated.

Android problem in PhysX-3.2 beta-3

carlos correia — Wed, 11 Apr 2012 11:13:05 -0400

Hi, i'm try to include (PhysX-3.2 beta-3) in our engine, but a simple line like "static PxDefaultAllocator gDefaultAllocatorCallback; "
produces lots of errors of type :

_ZTVN5physx19PxAllocatorCallbackE[vtable for physx::PxAllocatorCallback]+0x10): undefined reference to `__cxa_pure_virtual'
..
..

I'm running win7 64 with eclipse, and have tried a lots of configs in android makefile, none so far have worked.

any help will be appreciated !

Carlos Correia

Please give us the HAL compontents

r00t4ev3r — Thu, 05 Apr 2012 04:50:38 -0400

Why are you not going to open source the HAL components? Without these components, the Rome are not working well because many things are missing. What's so hard about to simply release the drivers?
Android is known for its large community, what would android be without the numerous custom roms?
It's not that there are 10 people which think like me, there are hundreds or even thousands.
Just read this Thread: http://forum.xda-developers.com/showthread.php?t=1347118
Please think about the community and about the future, because if you go on like this, like you are now doing, many people do not buy Tegra devices anymore.

Sorry for my English, but i think you understand what i mean.

Tegra 2-3 ICS driver memory leak?

Gary13579 — Mon, 02 Apr 2012 20:26:20 -0400

It appears that the Tegra driver for Android 4.x introduced some sort of memory leak which has broken several applications. Googling it a bit, it seems to specifically effect Asus Eee Pad Transformer and the Transformer Prime, but there are also occurrences of the problem on the Galaxy Tab 10.1. I personally own the Transformer TF101.

What happens from an end user standpoint is the application will go to a black screen and become unresponsive. This happens to several select applications, the main ones that I have noticed being Chrome, GMail, and AndChat (an IRC client). The only way to fix the problem is a full tablet reboot.

Here is a logcat output of when the application AndChat freezes. https://gist.github.com/2259510

This logcat was taken whilst running a completely stock ROM, however I should note that this problem occurs on every ROM I have tried, including several AOSP builds. I have tried clean installs of Android, by wiping everything from the tablet and only installing AndChat, and the problem still occurs.

What makes me think it is a GPU driver memleak are 1) the error "OpenGLRenderer is out of memory", 2) the fact that it only occurs after using the tablet for a while, 3) a reboot fixes it temporarly.

I do not know how to proceed in getting this fixed. I could contact ASUS, but it would likely just result in me talking to someone that barely speaks English, convincing me that I need to reboot the tablet and it'll magically fix itself. If I managed to get a developer at ASUS, they would likely just forward the problem to you guys.

Please direct me to who I should contact in getting this fixed. I am more than happy to test/debug things to the best of my capabilities to help resolve this issue. As of now, though, I have a tablet which is completely broken for the past few months since ICS has been released. If this is the quality of drivers that nVidia releases, I will likely not be purchasing Tegra based devices for my company any more.

Nvidia Tegra 3 tablet is not responding

simonsu2006 — Mon, 02 Apr 2012 11:04:53 -0400

Hi all,
I tried to debug this tablet through eclipse, I am doing Dev settings on the tablet, I pushed a button in the Dev settings, I don't remember what button now. It became not responding and just kept showing "Android" and the login screen (a time in left hand side and a lock in the right hand side) alternatively. I pushed and hold the power button, it showed "turn off?", before I could push "ok", this dialog window disappears, and "Android" and login screen continued alternatively. What's wrong with this tablet? Please help ! Thanks!

Android 4 nvidia omx api

digetx — Mon, 02 Apr 2012 07:04:17 -0400

Hi, there! I'm working on custom rom for acer a500 and i want to use nvidia's media extractors, hw decoders. Mainly i want to be able to play wmv/wma. So i have some questions...

1) Will nvidia update android sources on nv-tegra to ics? It would be nice if nvidia could release all needed header files for multimedia libs.

2) What i need to change in current available gingerbread superextractor to decode wmv/wma? I can play some wmv files, but without sound because after filling buffers for wma decoder nvomx returns error. I guess that some additional params needs to be passed to omx or data needs to be specially aligned.

Thanks in advance.

Revisiting NPOT, ETC1, MipMapping

Rob Nugent — Thu, 22 Mar 2012 09:26:42 -0400

Hi,

I've finally managed to distill the problems I reported in the following conversation into a simple test case:

http://forums.developer.nvidia.com/devforum/discussion/596

Essentially I'm trying to use non-power-of-two texturing with ETC1 compression and mipmapping. If the texture size *is* a power of two (say 128x128), it works OK and gives results as shown in good_128x128.png (attached). This is a synthetic example with the mipmap levels showing as green/red/blue squares each with a white centre.

If the texture size is *not* a power of two (say 124x124) I get a bad image as shown in bad_124x124.png (attached)

I think I've followed all the suggestions in the earlier conversation. I'll append the source in a subsequent append. If anyone can help or offer suggestions, I'd much appreciate it.

This is all running on my Asus EPad Transformer TF101 now running Android 4.0.3

The source code can be modified from the working to failing cases by changing line 93 of C4Cube.java from:

createMipMapCompressed(128);

to

createMipMapCompressed(124);

Many thanks in advance.
Rob

How install ICS/Honeycomb on Tegra 250 (Harmony)

eliofrancesconi — Mon, 16 Jan 2012 05:34:31 -0500

Hi all,
I'm struggling on searching in the documentation and forum, how install ICS on my tegra 250 evaluation board, but without success.

Is it possible to install it and how?

The only thing found in documentation is the image for the froyo version, is it the latest version supported or are there newer version supported?

Thank in advance for any hints.
Elio

porting kernel of one tegra2 device to another tegra2 device

varun — Wed, 28 Mar 2012 02:20:39 -0400

i have micromax a85 on android 2.3 but company refused to give kernel source so i wanna know if kernel of galaxy r can be ported to our lovely a85 since both devices are based on tegra2 board same ULP GPU have similar specs (except 512 - 1gb ram, 0.3 mp - 1.3 mp front camara , no flash-with flash
in micromax a85 - galaxy r respectively

Tegra ETC1 NPOT MipMaping

Rob Nugent — Tue, 20 Sep 2011 04:56:51 -0400

Hi,

I'm experimenting porting one of my existing PC opengl mapping applications to Android. My development platform is a Tegra (Asus EEE Pad Transformer).

I'd like to use ETC1 texture compression with non-power-of-two textures and mipmapping but can't get this to work at all. I can get mipmapping working with non-compressed textures, and I can get npot-ETC1 textures working without mipmapping.

If anyone can tell me if this is actually supported on Tegra, I'd really appreciate it.

Regards,
Rob

Tegra Android Developer Pack 1.0r5 OSX

Tony Ennis — Mon, 26 Mar 2012 20:53:07 -0400

I downloaded the Tegra Android Developer Pack 1.0r5 for OSX and was unable to open the DMG file.

I am running OSX 10.6.8

Has anyone else successfully done this?

Problems with variable arguments in the NDK

Sir Graham — Mon, 26 Mar 2012 08:42:06 -0400

Hi,

I have a problem with the NDK and the use of variable arguments in
functions. This only happens to me in the NDK, the same code compiled
with Visual 2010 or with the Debian GNU functioning properly.

int Test(int data,...)
{
va_list arguments;

va_start ( arguments, data );
int a = va_arg ( arguments, int);
va_end ( arguments );

return a;
}

If I call this function somewhere in the program for example:

int b = Test(5,10);

.. and made a debugger data. Within the function the variable "data"
grabs a random value and thus almost the same when I get the variable
"a" is not set to 10 (taking values as garbage)....

The corruption of the variables is as much for the "fixed" as the
variable "data" to the variables (obtained with the function va_arg
()). In the case of "fixed" as data corruption is even before
declaring the variable of type va_list va_xxx or use the functions ().

If I remove the variable argument of the function the value of data is
quite correct:

int Test(int data)
{
return data;
}

int b = Test(5);

It seems that when I use variable arguments in a function, stack it to
make the call or is not correct a problem occurs. This same code with
another compiler or on another platform, it works correctly.

To compile with the NDK'm using the latest version available from
NVidia Tegra DevPack:
tegra-devpack-1.0-windows-2012-02-21-11617556.exe

Anyone have any idea what's going on?

Thank you very much.

Tegra 3 Tablet Camera API

MichaelD — Mon, 26 Mar 2012 03:39:57 -0400

Hi,

i am doing my master thesis with the Tegra 3 tablet development kit. I want to do real time image processing on the stereo camera the tablet is providing (calibration, stereo correspondence, ...).

The FCamPro example does something like that - it gives an OpenGL texture to a SurfaceView. Is there an existing API-function that allows me to get the current (stereo)frame and manipulate it with some algorithms and pass it on to an (GL)SurfaceView - like the onPreviewFrame() function does on the Android API?

Thanks,
Michael

Tegra 2 GLES2.0 shader question

dashxdr — Tue, 20 Mar 2012 16:17:43 -0400

Does the Tegra2 fragment shader support flow of execution instructions? A piece of fragment shader code I want to use has a for() loop with a conditional break, but the behaviour is as if the entire loop has been unwound, which destroys performance.

I really want to know if the ULP GeForce used on the Tegra2 even supports the conditional flow of execution ARB instructions at all, and I can't seem to find any documentation or anything that has that particular detail.

If the tegra2 does support those instructions,
1) How can I tell the GLES20 compiler to make use of them when it is compiling my shader code?
2) If I can't do it with GLSL, can I wrote the ARB assembly language myself?

This is on an android samsung galaxy 10.1 tablet, by the way.

Thanks for any and all replies.
-Dave

About ICS and Harmony Source

phitch — Wed, 29 Feb 2012 22:28:57 -0500

So, a while back you posted this:

Hello Android Development Community

We do provide our Tegra kernel publically for our Tegra reference devices at http://nv-tegra.nvidia.com/gitweb/?p=linux-2.6.git. If you're looking for HAL components (ie drivers) or the kernel for a *specific* device it's up to the manufacturer to provide, as per the standard GPL license."

Andrew Edelsten

So, now I am going to call you out, I contacted LG about this, since you said they would have to release it. Well they reached out to you about releasing the source code, and today they got a response which they forwarded to me:

Dear Xxy

We are very sorry for that you keep waiting for a long time in advance.

Today we received reply from Nvidia.
I post their opinion regarding our question below. Please refer to below.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
기본적으로 저희 GB 기반의 Kernel driver들은 이미 아래 site를 보시면 아시겠지만 Public 되었습니다.
If you refer to below public link, NVIDIA already committed TEGRA based kernel sources with various way and timely manner.
http://nv-tegra.nvidia.com/gitweb/

하여 TMUS G2X Kernel driver에 대해서는 NVIDIA 입장에서는 Source 공개를 막을 이유가 전혀 없습니다.
So, NVIDIA official stance to release GB based Linux kernel source can be committed to open source community under GPL terms & condition.

단 LGE는 TEGRA HAL이나 User space code들을 별도로 Source로 받으시는 경우가 있는데 이 부분은 GPL을 따르는 것이 아니기 때문에 공개를 하지 마셔야 합니다.
However, since TEGRA hardware adaptation layer and few user space codes in Android were not made based on GPL so it’s purely NV proprietary, it should not be opened to the public.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We are very sorry to say that we don’t have any obligation to release source code about TEGRA HAL and user space code from Nvidia.
As they mentioned their opinion, because It isn’t GPL.

If you have any suggestion, please let us know.

Thank you
Best regard.

So, you are making posts blaming the manufacturers for not releasing source code for ICS and your devices and then telling those same manufacturers "However, since TEGRA hardware adaptation layer and few user space codes in Android were not made based on GPL so it’s purely NV proprietary, it should not be opened to the public." Congratulations! Lucky for end users there are several newer quad core and even a few dual core chips that actually outperform the Tegra 3. I will not purchase another Nvidia device until you guys get this right.

Next kernel release

giveen — Sun, 12 Feb 2012 10:19:12 -0500

Is there an ETA on Nvidia's promised release of a new kernel featuring support for Google's latest version of Android 4.0? It was stated earlier on this forum that it would be at the beginning of this year.

Unable to flash Ventana from 2.3

batterypoweredgames — Tue, 13 Mar 2012 13:46:26 -0400

I have a Ventana devkit with the old 2.3 build on and am in need of some honeycomb testing. Right now when I try to boot into recovery, it bootloops with an update image. When I try to go into fastboot, that works on the device but in Windows, I see the NVidia Fastboot driver installed correctly but running "fastboot devices" doesn't show anything. I'm not sure how to flash this with both of those not working for me. I'm familiar with linux so I also tried to see if I could mount an img via loopback device and copy files over but that also didn't work as this version of linux doesn't seem to have loopback support.

Update: Fixed - see last comment.

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Website For Mobile Games & Software

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Uniform comparison

IvanMMMMMM — Fri, 09 Mar 2012 20:19:28 -0500

Hello,

I'm writing a GLSL shader which is running on a Samsung Galaxy R with the tegra 2 chip. I have a comparison between a int uniform and a literal integer, and it doesn't seem to work. When i change the uniform with a literal equal to the value that is being passed to the uniform from outside, it gives the expected result. Any ideas? thank you very much.

OMX_ErrorInsufficientResources for Android : How to get system privilege?

StarDust — Wed, 12 Oct 2011 08:02:29 -0400

Hi,

I am getting insufficent resources when using a file from the SDCARD. The following test code running with NDK, gives 80001000 error at TEST16 (Line #213)

Please see the code here:

http://developer.nvidia.com/archived-tegra-forums/forum/omxerrorinsufficient-resources-file-operation

Actually OMX doesn't get any resource when running as android App. As it doesn't have the system privilege.

But when I run as su in Android shell, its OK.

So how can I get system privilege or is there any trick?

Is it possible to use Tegra Devpack with a Tegra Tablet (for example, Asus TF101)?

slliucc — Fri, 02 Mar 2012 00:34:10 -0500

Currently it looks like Tegra Devpack software only works with Tegra Development Kits hardware. Is it possible to use it with a normal Tegra tablet such as Asus TF101 to develop software?

NVIDIA Debug Manager for Eclipse install from url?

woutervd — Sat, 25 Feb 2012 09:07:49 -0500

Hi I have my own eclipse setup which runs well and the tegra android development pack setup. I hate to have two different setups. Is there (or will there ever be) a way, since it's the only really new thing in the pack, to install the debug manager in my own eclipse setup?

Regards

Wouter

Use CgFX on Android ?

alexandretrog — Fri, 24 Feb 2012 18:35:56 -0500

Hi,

I was wondering if we can use the CgFX libs on Android (ARM) ?

Flashing process hangs

ieq-use — Wed, 01 Feb 2012 07:24:17 -0500

Hello,

im stuck with flashing the MSC Q7-NT2 Board with Android ICS.
On the hostmachine (Unbuntu 10.04) the was installed "tegra-osinstaller-ventana-ics-1.0-linux-2012-01-19-11617556.run".
Also under /etc/udev/rules.d/51-android.rules i add the device
"SUBSYSTEM=="usb", ATTR{idVendor}=="0955", ATTR{idProduct}=="7820", MODE="0660", GROUP="plugdev""

So, i connect the USB-Client to my PC USB-Host and run "flashos.sh" and start the board in recovery mode.
But its stuck after following lines and nothing happens anymore.

# ./flashos.sh
Nvflash v1.5.66719 started
rcm version 0X20001
System Information:
   chip name: t20
   chip id: 0x20 major: 1 minor: 3
   chip sku: 0x8
   chip uid: 0x037c7107400071d7
   macrovision: disabled
   hdcp: enabled
   sbk burned: false
   dk burned: false
   boot device: nand
   operating mode: 3
   device config strap: 0
   device config fuse: 0
   sdram config strap: 0

sending file: flash.bct
- 4080/4080 bytes sent
flash.bct sent successfully
odm data: 0x30098011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
\ 864856/864856 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize

So do you have an idea why this happen? Do i forget something to setup?
Its possible thats the ics-bootloader won't run on my board (mismatch)?

I would be glad about some helpful comments.

Regards,
Ulrich

ps. I also tried to flash the board on winxp with the same result.

Android and Tegra: a good buy?

pnkpes — Fri, 17 Feb 2012 10:57:35 -0500

For me, definitely not.
I bought a LG 2X with Tegra 2 about a year ago and and NVidia does not release the kernel source for ICS. So many optimizations due to this operating system in LG 2X can not be exploited.
A high-end smartphones Tegra2 released just over a year ago is old just because they are released kernel source.
Why would anyone buy a new Tegra3 if not long after its release is not given more support?
Is this serious?
Dear sirs, you can give information to those who bought a smartphone with your processor?
Do not believe that we have the right?
Will release the source Tegra2 Harmony for ICS?

Delay in JNI debugging. Early breakpoints not hit unless ...

woutervd — Sun, 12 Feb 2012 07:31:40 -0500

Hi,

First, thanks for the awesome devpack and debugger. There are quite a few solutions available like ARM DS-5, Sequoyah and WinDGB but none of those worked well or at all for that matter.

Now I do have a problem with the debugger. I tried to debug the hello-jni sample, set some breakpoints and started debugging. The application ran, the debugger connected but no breakpoints (in the C code) were hit. Now I figured out that the breakpoints and some other debug data is send over to the gdbserver after the debugging connection is established and the application started running. So to work around this Issue I have set a breakpoints in java code (which thankfully works aside c breakpoints :D ) at System.loadLibrary("..."); Causing the application to halt there, giving the server the time to receive its data in order to break at the right spots.

Now it all works. My question: Will this be fixed somehow in the future? For example preventing the application from running before all the debug data is sent over?

The device I use is a HTC Hero running Cyanogenmod 6.2 since the debugger requires atleast froyo.

Thanks in advance,

Wouter

Missing perfhud libraries for non devkit devices

workless — Sun, 20 Nov 2011 10:07:13 -0500

Hi, I would like to run perfhud on my ASUS trasformer(bought just for this) (TF101) but i can't find perfhud libraries for android 3.2. I tried to mount system.img of the devkit but it doesn't work :( (it does work for 2.3 image).
Could you please provide perfhud libraries for each version of android?
or at least give information on how to mount 3.2 image? it's all i need, please.

Thanks for your time.

instrumented OpenGL ES drivers for end user device to use PerfHUD ES?

dsuoch — Thu, 15 Sep 2011 11:43:51 -0400

hello,

is there any chance to get instrumented OpenGL ES drivers for end user devices (like LG SU 660)? to be able to finally use PerfHUD ES?

in the old forums there was a thread about some hack, but i am not sure if i should try it ...
http://www.enovapp.com/tips/how-to-enable-perfhud-es-on-all-android-tegra-devices/

all the competitors have something like this working OOTB. powervr, adreno. why not nvidia,
when they apparently set so much on tegra?!? sorry, but without proper GPU tools we cannot make games that shine on nvidia hardware ...

so come on, please show us devs some love!

Community site research: Please let me know most important features of the Dev Zone site

tahoeob — Thu, 02 Feb 2012 17:18:57 -0500

I am doing research on Social Community sites and very impressed with the Twitter Dev site. I would be very interested in hearing community members perspective on what is most useful on the site (ex. blogs, discussions, reputation ranking).

What are the most useful features?
What is missing ?
What would a "minimally viable product" include for a community site ?

I really appreciate any feedback!

When is Nvidia going to open source the HAL components?

nonmindo — Thu, 08 Sep 2011 00:28:24 -0400

I'm carrying this over from the archive, the homebrew community desperately needs access to this information so we can utilize the A2DP profile

myself among im sure hundreds of others would like to know this as well, without the source to HAL components the homebrew community is unable to get a fully working aosp android build, more specifically CyanogenMOD 7.1 A2DP HAL access for LG Optimus 2x (P990) and LG T-Mobile G2X (P999), without the access we arent able to utilize the tegra 2 chip to its potential. I mean LG has released their kernel source, already, and early at that.

its asked on almost EVERY non OTA based rom thread by atleast 20 or 30 people in the dev section over at XDA, as well as many other android sites. 2 of the best AOSP based roms MIUI and Cyanogenmod are being hindered by the lack of this feature.

Many people use the A2DP in their vehicles to interface with their car stereos, and without this feature they will have to resort to a corded headphone connection and to holding the phone in hand while driving to change tracks and such, in most states it is illegal to hold a phone and drive at the same time, which is why we really need access to these drivers

Low volume Tegra hardware source?

ryanismert — Fri, 27 Jan 2012 18:58:27 -0500

Can anyone send me some links to providers of low volumes (single digits for now) of Tegra 2 hardware WHICH support or run Android? I have seen the links provided by Nvidia here http://developer.nvidia.com/tegra-hardware-sales-inquiries, but I didn't see any with Android support. +1 for 1000Gb Ethernet. Another +1 for onboard (or on-carrier-board) 802.11n.
Thanks!

Any way to disable overlay blending?

D ONeil — Wed, 25 Jan 2012 02:11:18 -0500

Our development device recently got upgraded with the libraries and kernel from the latest Ventana ICS release - so thanks for that! However, we're seeing some issues with the dialogue box blending. Specifically, they are far too transparent!

Is there any way to disable this popup box blending? It didn't seem to occur using the earlier libraries.

Issues w/ Android Tegra Ventana Port

herriojr — Tue, 24 Jan 2012 13:42:43 -0500

Hi All,

I appear to be having a few issues with the Tegra Ventana with the stock firmware (3.2).

1) ConnectivityManager does not properly report the ActiveNetworkInfo, and instead returns null even though a wifi connection does exist.

2) GPS does not work at all, a connection is never established. Has anyone verified this working? I'm trying to figure out whether this one is a hardware or software issue.

3) There appears to be a slot for an SD Card, but I don't know if it really supports a mobile connection, and trying to set the APN with an SD Card in fails. I'm assuming this is just not supported?

3) The latest Android at http://nv-tegra.nvidia.com/gitweb/ doesn't appear to be the most up to date, is there another location for the 3.2 source?

Thanks in advance!