Cg for OpenGL

puh · Post by **puh** » Mon Aug 09, 2004 10:10 am

Gorgon Zola wrote: If You want to take a look at the changes and tell me what you think about it, it would be really great.
http://thomas.webtracker.ch/jahia/album ... /cg002.zip

I can't find ICGProgram.h and ICGProgram.cpp in your archive. It's not working without them. Could you please add them into?
And would be great if someone post here example with sources. I still couldn't realize what means third parameter in

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virtual ICGProgram* createCGProgram(const c8* name, const c8* program, const c8* entry, u32 flag)=0;

zola · Post by **zola** » Mon Aug 09, 2004 12:17 pm

sorry, didn't realize it was not included in the zip.

If You redownload You'll find a test app included in the new zip file

puh · Post by **puh** » Mon Aug 09, 2004 12:58 pm

zola could you please add also SMaterial.h as I've got following error:
F:\Information for me\Roman\Download\Irrlicht\irrlicht-0.6\source\CVideoOpenGL.cpp(1302) : error C2039: 'VertexShader' : is not a member of 'irr::video::SMaterial'

zola · Post by **zola** » Mon Aug 09, 2004 1:31 pm

updated
this is getting embarrassingi seem to forget every thing

puh · Post by **puh** » Mon Aug 09, 2004 2:56 pm

I've got 19 errors like

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CVideoOpenGL.obj : error LNK2019: unresolved external symbol __imp__cgGetErrorString referenced in function "public: static void __cdecl irr::video::CVideoOpenGL::cgErrorCallback(void)" (?cgErrorCallback@CVideoOpenGL@video@irr@@SAXXZ)

using Microsoft Visual C++ Toolkit 2003 + RELO IDE and Cg Toolkit v. 1.2.1.
Why compiler don't want to use this functions from [DRIVE]\Program Files\NVIDIA Corporation\Cg\include\Cg\cg.h?
Seems to me it's better wait for a next Irrlicht release with hope that Niko will add shaders.

zola - · Post by **zola -** » Mon Aug 09, 2004 3:55 pm

cheers to that.

If I'm not completely mistaken I used the 1.1 version of the cg toolkit.

I think there are several cg libs against which you have to link irrlicht.
(not only the one for CG.DLL) They should be in [DRIVE]\Program Files\NVIDIA Corporation\Cg\lib or something like that.

I'm not at my computer so I can't tell you what libs these are exacly
If I remember right there was CG.lib, CGGL.lib, and some other ??

Anyway, if You d'like to use CG and not only test it I recommend waiting, shader support eventually will be integrated in irrlicht in a more easy and complete way

puh · Post by **puh** » Mon Aug 09, 2004 4:38 pm

Roger that.
I'll try with VC++ v.6 at home.

puh · Post by **puh** » Tue Aug 10, 2004 7:32 am

OK, finally I did it!
I forget to add cg.lib and cgGL.lib into "Extra libraries"

Excellent effect, by the way

zola · Post by **zola** » Tue Aug 10, 2004 12:54 pm

hehe, would be somewhat expensive to have this effect without cg.

Your using nv cg toolkit v.1.2.1, and it works?

are you going to include more parameter types to ICGProgram?

puh · Post by **puh** » Tue Aug 10, 2004 1:21 pm

Yes, compiled and works ok with 1.2.1

are you going to include more parameter types to ICGProgram?

Oh, i'm not such advanced programmer for that, but who knows? Time to get some additional info about Cg - I'm out to Google

Guest · Post by **Guest** » Tue Oct 26, 2004 7:37 pm

hi!
i tried to get irrlicht 0.7.1 to compile with CG and modified a few files, but i still keep getting one error that i cannot get rid of:

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CVideoOpenGL.cpp: In member function `virtual irr::video::ICGProgram* 
   irr::video::CVideoOpenGL::createCGProgram(const c8*, const c8*, const c8*, 
   unsigned int)':
CVideoOpenGL.cpp:59: error: no matching function for call to `
   irr::video::CCGGLProgram::CCGGLProgram(irr::core::stringc&, 
   irr::core::stringc, irr::core::stringc, u32&)'

CCGGLProgram.h:26: error: candidates are: 
   irr::video::CCGGLProgram::CCGGLProgram(const irr::video::CCGGLProgram&)
CCGGLProgram.h:48: error:                 
   irr::video::CCGGLProgram::CCGGLProgram(irr::core::stringc&, 
   irr::core::stringc&, irr::core::stringc&, unsigned int)

here is the source folder with the modified files, maybe someone of you could have a look at it? that would be great because then we would have CG support in irrlicht 0.7.1 !!!

http://gfxstyler.dyndns.org/ftp/irrlicht071CGsource.rar

edit: please forgive me this slow download speed, its a temporary setup homeserver (if the file is offline, try again later)

POi · Post by **POi** » Wed Oct 27, 2004 6:31 am

Looking at it now but get a lot of linker errors ... have you included the files in the project ?

POi · Post by **POi** » Wed Oct 27, 2004 6:38 am

I actually succeeded in compiling the .dll

I added the all the CG libs as additional dependencies (cg.lib cgGL.lib cgD3D9.lib CgFXParser.lib) and then i added CCGGLProgram.h/.cpp into the project.

Compiled it with VC .NET 2003 ... and it worked like a charm.

Guest · Post by **Guest** » Wed Oct 27, 2004 12:30 pm

ok i added the libs and included the 2 files, but i still get the same error

does that mean that you cannot compile it with Dev-C++ ?

POi · Post by **POi** » Wed Oct 27, 2004 12:41 pm

Sorry don't know. Have never used Dev-C++. I used CG v.1.2 .. maybe that is the problem. But if you get the same errors maybe your code doesn't compile right... search for other files that aren't included in the project.??