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Glut/GL Camera or view point please help

Sun, 08 Nov 2009 17:39:25 CST

Posted by Slong:
Alright i made alot of changes, but im still getting just the blue screen... i tried taking out the glOrtho(0.,(GLdouble)ww,0.,(GLdouble)wh, -300.,300.); glMatrixMode(GL_MODELVIEW); on each but that didnt fix anything, the reason i did it i have no

Polygons disappear with transparency

Sat, 07 Nov 2009 20:58:33 CST

Posted by DoomMuffins:
Strangely enough, using glDisable(GL_TEXTURE_2D) before I drew the second poly caused it to show up properly, with transparency (although the first poly still disappears.) Here's the texture code. It uses SDL to load the texture. [code] GLuint texture

Enemy Territory: Quake Wars error

Sat, 07 Nov 2009 19:50:38 CST

Posted by Athen_Rahl:
OpenGL version is 2.1.2; I found a thread elswhere on this forum that has a DL that should update it to 3.o, but the general video drivers are older than what I have now... If I update to the 3.0 then re-install the newer drivers, will it revert again to

Disable Texture Coordinate Generation

Sat, 07 Nov 2009 15:30:18 CST

Posted by DandyYuyo:
Or start commenting the shadow drawing code out, until the hud works, then you'll know wich state is causing trouble.

Redraw on Mouse Move

Sat, 07 Nov 2009 08:46:34 CST

Posted by ZbuffeR:
scissor tests : how could that possibly help for the mentioned problem ?

install Glut in visual studio

Sat, 07 Nov 2009 05:29:16 CST

Posted by niobee:
Hi all, I am trying to install glut in visual studio 2010 professional. However, I could not managed to install it in my windows 7. The procedure that I did is 1. Put the file "glut32.dll" in "C:\WINDOWS\system32" 2. Put the file "glut.h" into C

Image dissaperence

Sat, 07 Nov 2009 04:09:56 CST

Posted by answerme:
Hye all Iam new to OPEN GL I am facing a problem with my image. Actually I have 3 systems & communication SYSTEM A ,B with C through socket programming.If Iam sending data from system A to SYStem C Iam able to see the picture continously But when Iam se

Q:execution times of vertex/pixel shader

Sat, 07 Nov 2009 03:37:33 CST

Posted by Alfonse Reinheart:
[quote]if my understanding is right,then a further question is,how does vertex and pixel shader to keep variables relative?from which vertex's writing when a pixel shader use one varying variable that been wroten at vertex shader process?[/quote] Verte

problem in deleting the group of lists

Fri, 06 Nov 2009 22:57:41 CST

Posted by pnpvivek:
i want to deleting the group of Lists and create the group of Lists dynamically.I tried using this code. but some times it didn't delete properly/ following is the code. int nListSize = 5 ; unsigned char nListIndex = 1 ; m_List = glGenLists(nList

texture : complied but texture not applied !!!!

Fri, 06 Nov 2009 21:07:11 CST

Posted by Sephiroth_Slash:
hii everyone, I just begin OpenGL programmation by following the tutorials on " Super Bible Forth Edition " . In chapter 8, texture Basics, I did " copy - past " for the programme named " Pyramid ", and managed to compile it using the " gltools.

OIT

Fri, 06 Nov 2009 17:12:13 CST

Posted by ZbuffeR:
Same problem here, geforce GTX275, FW 191.07

Centering a 3D model

Fri, 06 Nov 2009 15:07:01 CST

Posted by DandyYuyo:
This is what you can do to know "how far" the camera should be: camPos.Y = worldMin.Y - ((worldMax.X - worldMin.X) / 2) * 1.1f / tan((cameraFov/180.0f*(float)M_PI)/2); Note: 1.1f is to add a 10% margin, the camera points towards positive Y, up is 0,

glGetUniform bug on NVIDIA

Fri, 06 Nov 2009 14:12:16 CST

Posted by Alfonse Reinheart:
[quote]Not sure if this is what you're talking about or not, but if so, I don't understand your statement. false would be the initializer, and the value you want. No?[/quote] He's saying that he can't query the initializer from the OpenGL interface. Ob

OpenGL 3.2 - Guaranteed order for gl_InstanceID

Fri, 06 Nov 2009 13:27:39 CST

Posted by Alfonse Reinheart:
Why would there be? MultiDraw and Instancing are used in two completely different places for two completely different things. There is MultiDraw with BaseVertex and Instancing with BaseVertex. But there's no need for both.

ARB Feedback

Fri, 06 Nov 2009 13:03:37 CST

Posted by elFarto:
Unfortunately the ARB meetings are super top secret, so it's unlikely they'll say anything about them. Although it would be nice to know if the page we put together was useful. Regards elFarto

enable multisample

Fri, 06 Nov 2009 10:56:10 CST

Posted by Brolingstanz:
... And should your hardware permit you to dabble in GL 3.2 (see TexImage2DMultisample) or extensions (see NV_explicit_multisample) you can render to multisample textures instead, which are considerably easier to setup and use but require that you resolve

Shape Transformation Issue

Fri, 06 Nov 2009 10:00:48 CST

Posted by DmitryM:
You don't seem to draw anything before doing PopMatrix, so all these transformations are ignored.

problem in deleting glLists dynamically

Fri, 06 Nov 2009 09:55:52 CST

Posted by Brolingstanz:
I've no idea what deleting a DL has to do with MFC and ActiveX. My Best guess is you lost your context before deleting your list, which is a no^2 of the third kind.

FileDialog ?

Fri, 06 Nov 2009 09:28:56 CST

Posted by DarkShadow44:
Hi, its me again :crazy: Can you say how I can use the OpenFileDialog and SaveFileDialog of Windows for my OpenGL projects ? And how can I display a MessageBox if I use fullscreen ? Tnaks in advance !

glCompressedTexSubImage2D

Fri, 06 Nov 2009 09:20:45 CST

Posted by skynet:
Yikes! Actually, there's no bug. It seems, I tricked myself via a wrong glActiveTexture() state. The very first upload always worked, then some other code changed glActiveTexture, and then, the next glCompressedTexSubImage referred to the wrong texture,

OpenGL Es on Xilinx

Fri, 06 Nov 2009 07:44:51 CST

Posted by RGHP:
That's not OpenGL realted question men. Anyway I can help you: Easy way: Use the ubuntu port to the virtex 5 platform(look for it in the OpenSparc page) and use the software rendering. Challenging and recommended way: http://www.vincent3d.com/ I

Change of representation: eye in object space

Fri, 06 Nov 2009 05:52:16 CST

Posted by Dark Photon:
Don't cross-post! [url=http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=266699]>[/url]

Eye position in object space?

Fri, 06 Nov 2009 05:50:53 CST

Posted by Dark Photon:
[quote=mattjakob]I need to calculate the position of the camera (eye) in object space, given a transformation matrix M. I think in theory is should be: eye_obj = col * (V.transpose).inverse * M.inverse[/quote] Dmitry's got you covered, but it looks

uploading a very large texture in smaller blocks ?

Fri, 06 Nov 2009 04:58:43 CST

Posted by arekkusu:
See the documentation for GL_UNPACK_ROW_LENGTH.

glDrawElements() draws only part of my mesh... :-x

Fri, 06 Nov 2009 03:22:53 CST

Posted by rakesh_thp:
Hello.. I have recently shifted from Display lists to VBOs... It's a very nice thing in OpenGL i found to render huge amount of data smoothly.. Let me explain you the scenario.. I have maintained a list of triangle objects as [code]std::map Mesh