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Messages - JeGX

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Yes, since v0.6.3.9, GLSL Hacker supports MRT.

There should be a demo in the code sample pack /host_api/MultipleRenderTargets/

To create a render target with two color buffers:

Code: [Select]
num_color_targets = 2
rt01 = gh_render_target.create_v2(width, height, num_color_targets)

When you need to bind color buffers as textures, just do:

Code: [Select]
gh_texture.rt_color_bind_v2(rt01, 0, 0) -- Color texture 0 on texture unit 0
gh_texture.rt_color_bind_v2(rt01, 1, 1) -- Color texture 1 on texture unit 1

In the fragment shader, just declare several outputs:
Code: [Select]
out vec4 FragData[2];

Let me know if the code sample pack is not up to date.
Hope that helps.

University of California researchers have created a system that shows how the brain works in real time, allowing users to navigate right inside their own heads and see their neuronal activity firing in three dimensions, showing “real-time source-localised activity from electroencephalographic signals”.

The two consoles' Graphics Processing Units - called Flipper on the GameCube and Hollywood on the Wii - have a lot in common with their modern PC counterparts, but there are just enough differences to make perfect emulation an absolute nightmare. One quirk in particular is the use of integer math within the console GPU pipeline - as opposed to floating point math which is the norm for PC GPUs.

GpuTest / Re: GpuTest 0.7.0
« on: March 13, 2014, 05:46:23 PM »
I wonder, what's the point of GpuTest if it only works with Nouveau drivers, which are slow and don't even give an accurate measure of the power of my GPU? There's probably something I don't understand.

Fortunately, GpuTest works also with NVIDIA and AMD binary drivers (otherwise GpuTest would be useless, open source drivers are not my passion). Most of the time, my linux boxes have proprietary drivers and tests like TessMark or Julia FP64 work only with NV / AMD binary drivers. I always develop with real NV/AMD drivers and I test open source drivers only before release. Maybe your drivers are not properly installed and something is perturbing GpuTest, I don't know. Wait for the next release of NV drivers for Linux (follow geeks3d news ;) ) and do a new test again.

*Warning: Quite off-topic and not really concerning GpuTest*
On the bright side tho, you Sir may have stopped me from buying a new (unnecessary) video card.
I had a lot of faith in you lol and I was surprised when you said it could just be the drivers.
So I finally found the right tutorial and managed to install the correct drivers. And my video card now does what it's born to do :P
I went from 15 fps on Team Fortress 2 to 200 fps :D!

Thanks a lot JeGX!
You're welcome!

GpuTest / Re: GpuTest 0.7.0
« on: March 12, 2014, 05:01:38 PM »
Thanks for the feedback Stebs.

The engine behind GpuTest supports core profile but it's likely a bad setting in GpuTest. I will look at this issue asap.

GpuTest / Re: GpuTest 0.7.0
« on: March 08, 2014, 10:53:21 AM »
But GpuTest is working now, yay!
If I use the (recommended) drivers, nvidia-319, it fails. But as you said,  most of them work well with Nouveau driver. TessMark's, GiMark and PixMark Julia FP64 aren't working, let me know if you want the log file for them.

It's normal, all these benchmark require OpenGL 3.3 or OpenGL 4.0 support and Nouveau driver is limited to OpenGL 2.1 or maybe 3.0 I can't remember.

I'm glad it works, and also saddened to get the results I feared...
I have a GTX 460 768mb, which is not bad I believe, and get 3-4 FPS on the FurMark test, 1024x640 windowed mode. Same with PixMark Volplosion: 3 FPS.

Same reason: Nouveau driver: Nouveau driver is slow and does not show the performance of your GTX 460. When you will manage to install real NV driver, you will see the difference. So don't panic, your GTX 460 is not dead  ;)

GpuTest / Re: GpuTest 0.7.0
« on: March 06, 2014, 02:34:45 PM »
Hi Pasqual,

yes you've posted in the right forum.

Could you copy / paste the content of the log file (_geeks3d_gputest_log.txt) here? Maybe we'll see something interesting. The second thing you can do is to test the previous version of GpuTest:

because I feel a possible bug with the new GPU monitoring plugin I added in GpuTest 0.7.0. By the way, can you delete and and test GpuTest 0.7.0 again?

If I check ''Submit score to GPU database'', a webpage loads and I can read this in red : INVALID validation ID
Also, when I check this box, and only when I do, I get this message in the console:
(process:26770): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
The GLib-CRITICAL message comes from firefox. Try the following command in a terminal:

$ firefox -v

and I'm sure you will have the same message.

I spent way too much time trying to install the latest NVIDIA drivers (I'm starting to miss Windows...) and I thought I had succeeded... maybe it didn't work, maybe that's why the test fails?
Totally agree with you. The installation of NVIDIA driver is easy and works fine in LM13 but is real pain in LM16. Try to use the Driver Manager to change / update the graphics driver. Most of GpuTest demos work fine with the Nouveau driver.

General Discussion / Re: EVGA GeForce GTX 750 Ti FTW hands-on review
« on: March 05, 2014, 01:14:15 PM »
Stefan, have you tried CUDAMiner?

GpuTest / GpuTest 0.7.0
« on: March 04, 2014, 09:51:08 PM »

English forum / Re: Is GLSL Hacker source code closed?
« on: March 03, 2014, 05:57:53 PM »
glsl hacker is currently closed source. There is no plan to make it open source in the near future.

English forum / Re: Get error 403 when I download the GLSL hacker
« on: March 03, 2014, 05:56:05 PM »
You have to download GLSL Hacker from the download page not by a copy/paste the link into the browser.

Please download the latest DEV version, not of official BUT OUT-DATED version.

Renderdoc™ is a standalone program that can be used to capture and replay frames from any Windows application using Direct3D 11.0 or 11.1, and provides tools for deep analysis and graphics inspection, as well as detailed examination of API usage - allowing developers to locate bugs and problems in their programs.

Developed by Crytek, Renderdoc™ has been built from the ground up to reflect the real needs of graphics programmers, and has evolved based on its day-to-day usage in the creation of CRYENGINE titles.

Plans are in place to increase Renderdoc™'s functionality over time, adding support for other platforms and APIs such as OpenGL.

R334.21 killed my linux mint 16 setup... First time I encounter an issue with nv drivers.

General Discussion / Re: EVGA GeForce GTX 750 Ti FTW hands-on review
« on: March 03, 2014, 05:47:18 PM »
Nice quick review Stefan!
As soon as the new GpuTest will be online, try the new fp32/fp64 OpenGL test...

For the speed fan detection, I noticed that only fan speed RPM was reported, not the fan speed percent. Maybe a bug in my tools or something wrong with recent nv drivers. Will look at this asap.

General Discussion / Re: Furmark (Win): average bug
« on: March 03, 2014, 05:39:46 PM »
yep I'm aware of that bug, it is present in some of my other benchmarks. Should be fixed in the next update.

The introduction this week of NVIDIA’s first-generation “Maxwell” GPUs is a very exciting moment for GPU computing. These first Maxwell products, such as the GeForce GTX 750 Ti, are based on the GM107 GPU and are designed for use in low-power environments such as notebooks and small form factor computers. What is exciting about this announcement for HPC and other GPU computing developers is the great leap in energy efficiency that Maxwell provides: nearly twice that of the Kepler GPU architecture. That makes Maxwell a great architecture for future NVIDIA Tesla products, so stay tuned.

This post will tell you 10 things that you need to know about Maxwell as a GPU computing programmer, including high-level benefits of the architecture, specifics of the new Maxwell multiprocessor, guidance on tuning and pointers to more resources.

3D-Tech News Around The Web / Scaling Mercurial at Facebook
« on: February 17, 2014, 08:11:12 PM »
With thousands of commits a week across hundreds of thousands of files, Facebook's main source repository is enormous--many times larger than even the Linux kernel, which checked in at 17 million lines of code and 44,000 files in 2013. Given our size and complexity—and Facebook's practice of shipping code twice a day--improving our source control is one way we help our engineers move fast.

GpuTest / Re: GPU Text OS X 0.6.1 - BUG
« on: January 08, 2014, 09:55:25 AM »
What is your OS X version ?

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