OpenGL Shader Language

bux · 07-25-04, 04:42 AM

Hi!

I saw that the newest driver supports OGSL and I would really like to start doing some shader programming. But I don't know how I should start.
I found a open source "compiler" at 3dlabs, but I have not yet found any examples.

Could anyone point me to a example or a info page (how I can do this on linux)?

// Alexander Bussman

dulley · 07-25-04, 08:09 AM

Take a look at this post:

http://www.nvnews.net/vbulletin/show...3&postcount=38

bux · 07-25-04, 08:40 AM

Ok, now... what do I have to do to make it compile?
I only get a very long list with errors and warnings

dulley · 08-04-04, 10:41 PM

OpenGL Shading Language in 5 steps (Use this tarball: glslang_simple.tar.gz)
----------------------------------

1. Download the driver with GLSL support:
wget -c ftp://download.nvidia.com/XFree86/Li...-6106-pkg0.run

2. Install the driver:
sh NVIDIA-Linux-x86-1.0-6106-pkg0.run --opengl-headers

3. Build and install the shading compiler library (libglslang.so)
cd OpenGLCompilerJuly072004
make && make install
ldconfig
cd ../

4. Compile and run the example program:
make
./simple

5. Read the source code and create your own shaders!

enodev · 08-05-04, 03:23 AM

So, what's the minimum geforce board you need for this? my 4600 doesn't seem to support GL_ARB_fragment_shader (I'm looking at ogl2brick) . Commenting out the check results in a segfault. Commenting out /fragment/i results in a window with nothing in it... So, what do I need to get this to run?

**Thunderbird** · 08-05-04, 08:05 AM

If you want to use features not supported on your card you can allways enable geforcefx emulation (perhaps there's nv40 emulation now too). You can enable geforcefx (nv30) emulation using: export __GL_NV30_EMULATE=1

Note that this emulation is quite slow but using it you can get started.

FreeCatalonia · 08-05-04, 08:01 PM

The __GL_NV30_EMULATE=1 doesn't work with my gf4 mx and I still get the same errors at load-time. I assume that emulation would be software only, so where's the problem?

Is it possible that the __GL_NV30_EMULATE=1 mode only works with cg programs and not with OpenGL SL?

07-25-04, 04:42 AM	#1
bux Registered User Join Date: Jul 2004 Posts: 2	OpenGL Shader Language Hi! I saw that the newest driver supports OGSL and I would really like to start doing some shader programming. But I don't know how I should start. I found a open source "compiler" at 3dlabs, but I have not yet found any examples. Could anyone point me to a example or a info page (how I can do this on linux)? // Alexander Bussman

07-25-04, 08:09 AM	#2
dulley Registered User Join Date: Sep 2003 Location: Sao Paulo, Brazil Posts: 23	Re: OpenGL Shader Language Take a look at this post: http://www.nvnews.net/vbulletin/show...3&postcount=38 __________________ PowerBook G4 12" 1.33 GHz, 1.25 GB (DDR PC2700) GeForce FX Go5200 64 MB

07-25-04, 08:40 AM	#3
bux Registered User Join Date: Jul 2004 Posts: 2	Re: OpenGL Shader Language Ok, now... what do I have to do to make it compile? I only get a very long list with errors and warnings

08-04-04, 10:41 PM	#4
dulley Registered User Join Date: Sep 2003 Location: Sao Paulo, Brazil Posts: 23	OpenGL Shading Language in 5 steps OpenGL Shading Language in 5 steps (Use this tarball: glslang_simple.tar.gz) ---------------------------------- 1. Download the driver with GLSL support: wget -c ftp://download.nvidia.com/XFree86/Li...-6106-pkg0.run 2. Install the driver: sh NVIDIA-Linux-x86-1.0-6106-pkg0.run --opengl-headers 3. Build and install the shading compiler library (libglslang.so) cd OpenGLCompilerJuly072004 make && make install ldconfig cd ../ 4. Compile and run the example program: make ./simple 5. Read the source code and create your own shaders! __________________ PowerBook G4 12" 1.33 GHz, 1.25 GB (DDR PC2700) GeForce FX Go5200 64 MB

08-05-04, 03:23 AM	#5
enodev Registered User Join Date: Dec 2003 Posts: 2	Re: OpenGL Shader Language So, what's the minimum geforce board you need for this? my 4600 doesn't seem to support GL_ARB_fragment_shader (I'm looking at ogl2brick) . Commenting out the check results in a segfault. Commenting out /fragment/i results in a window with nothing in it... So, what do I need to get this to run?

08-05-04, 08:05 AM	#6
Thunderbird Join Date: Jul 2002 Location: Netherlands, Europe Posts: 2,105	Re: OpenGL Shader Language If you want to use features not supported on your card you can allways enable geforcefx emulation (perhaps there's nv40 emulation now too). You can enable geforcefx (nv30) emulation using: export __GL_NV30_EMULATE=1 Note that this emulation is quite slow but using it you can get started.

08-05-04, 08:01 PM	#7
FreeCatalonia Registered User Join Date: Jul 2004 Posts: 19	Re: OpenGL Shader Language The __GL_NV30_EMULATE=1 doesn't work with my gf4 mx and I still get the same errors at load-time. I assume that emulation would be software only, so where's the problem? Is it possible that the __GL_NV30_EMULATE=1 mode only works with cg programs and not with OpenGL SL?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
OpenGL book	Airstrip1	Software Development	2	08-12-12 08:55 AM
Major WineX prob... I think it has to do with the vidcard...	Linewbie	NVIDIA Linux	20	10-09-02 09:58 PM
Thoughts on the command line as an interface.	lunix	Microsoft Windows XP And Vista	10	09-12-02 08:44 PM
linux opengl extension	chijacky	NVIDIA Linux	5	08-23-02 11:16 AM
Slow OpenGL on 7.3	kl899	NVIDIA Linux	1	08-04-02 07:58 PM