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| Some recent topics started on our forums |
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Implementation of Scene Graphs, Spatial Trees, Culling, Bounding Boxes and more...
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Hey there,
I seem to find the concept of scene graphs and other sorts of hierarchical trees rather confusing, so I thought to post for some guidance here on gamedev. I haven't really got a specific question, I'd just like someone to explain m... |
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Posted April 30, 2010 5:44:57 PM
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Texture reloading when toggling fullscreen, SDL+OpenGL
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Dear reader,
Today I decided to tackle the problem of reloading my textures whenever the OpenGL context gets lost and recovered (for example when SDL switches to fullscreen or windowed -> a new window is created). However, this seems to be hard... |
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Posted December 28, 2009 10:08:33 PM
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[SOLVED - Thanks jyk :)]Camera Class - Yaw and Pitch
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Hey GameDev!
I'm having some trouble figuring out how yawing and pitching my camera in 3d works and I was wondering if anyone could help me out. Over the last two, three days I've been trying out all sorts of matrix multiplications and stuff, but... |
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Posted February 27, 2009 6:42:08 AM
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Everything Mirrored over z-axis
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Hey there!
Let's get down to the problem: Everything I render in OpenGL is mirrored over the z-axis. I place something to the right of the z-axis (x = 2), it is rendered to its left. When I move my camera to the right (worldmatrix: x -= 1), the en... |
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Posted February 25, 2009 1:15:47 PM
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How do render states work now?
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Hey there!
Take this piece of Direct3D9 pseudo-code as example:
// PREUDO CODE EXAMPLE //
SetRenderState(ALPHABLEND_ON);
SetRenderState(ALPHABLEND_STATS);
// Start gameloop
while(1)
{
SetRenderState(ALPHABLEND_ON);
DrawWater(); /... |
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Posted August 27, 2008 5:24:44 PM
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Unhandled Exception at return?
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Hey there!
When I build a release version of my app, I get an unhandled exception in this piece of code (WinAPI setup):
HRESULT NSystem::Init(std::string strClass, std::string strIconFilename)
{
// get the Instancehandle
m_hInst = GetModul... |
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Posted July 23, 2008 7:04:29 AM
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Rectangles, Lines, and Dots - Use primitives?
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Hey there,
I'm making a very basic graphics engine (just something that wraps up DirectX), nothing fancy. I was thinking about supporting functions that draw coloured rectangles, lines or dots on the screen. It would appear the best way to do... |
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Posted July 22, 2008 3:31:49 PM
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Lost Device problem with D3DXFont
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Hey there!
I've got some problems with lost devices. Whenever the D3D device is lost, this code is looped through:
// given: std::vector<LPD3DXFONT>
for(UINT i=0; i<m_pFonts.size(); i++)
{
m_pFonts[i]->OnLostDevice();
}
... |
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Posted July 20, 2008 5:47:00 PM
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[SOLVED] strcmp not working?
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Hey GDNet,
I've arrived at one of those "you've debugged a hundred times, but yet can't find the possibly stupid source of the problem"-moments. I'm going crazy! Why is strcmp() not working? What am I doing wrong?
I've got two std::strings... |
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Posted July 14, 2008 9:20:21 PM
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Disabled windows (WinAPI)
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Heya!
When I'm running fullscreen (style: WS_POPUP), and press with Windowsbutton on my keyboard, the startmenu pops up, but the window is still drawn in the background. How can I disable my app when for example that button is used, alt-... |
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Posted July 14, 2008 1:26:37 PM
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View All Topics Started By This User
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| Some recent replies made on our forums |
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Stumped on Homework problem... C++
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As everyone has said, the problem lies in the initialization of your two numbers, NOT in the while-loop (although it could be optimized). Look at these two lines:
int num1, num2;
diff(num1, num2);
These were on top of your "kinda" imp... |
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Posted October 9, 2010 8:41:44 AM
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What is the use of .lib file?
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Because headers normally only contain declarations and no definitions. Thereby, libraries are precompiled, which is a huge advantage with bigger projects. They only need to be linked.
Correct me if I'm wrong though, I'm learning just as... |
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Posted June 5, 2010 2:42:41 AM
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Implementation of Scene Graphs, Spatial Trees, Culling, Bounding Boxes and more...
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Things are started to clear up. Slowly.
Separating logical and graphical data seems like a solid plan to me. A Scene Graph consists of nodes describing how the world is ordered in a logical fashion. Adding a node (or entity, as you'd like to call... |
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Posted May 1, 2010 7:12:22 AM
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Implementation of Scene Graphs, Spatial Trees, Culling, Bounding Boxes and more...
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Thanks for answering, Wiegje85.
Nonetheless: yes, I could have used google for this. And I already had. As much as I appreciate your reply, I understand the concept of all these trees. The problem is the implementation (for which google, frankly,... |
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Posted May 1, 2010 6:21:17 AM
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Texture reloading when toggling fullscreen, SDL+OpenGL
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Quote:Original post by jyk
I think the question wasn't so much, 'Why is my context being lost?', but rather, 'Why aren't I seeing anything after the context is recreated?'.
Yup.
Anyway, I think you're right jyk. Deleting the OpenGL Resources bef... |
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Posted December 29, 2009 12:10:50 PM
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Texture reloading when toggling fullscreen, SDL+OpenGL
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Thanks for replying, idinev, jyk and szecs! I solved the problem, thanks to you guys. It lay indeed in the not resetting of the OpenGL state correctly after switching.
Quote:original post by jyk:
You are right that textures need to be re-uploaded... |
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Posted December 29, 2009 9:31:37 AM
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Necessary parts to a video game
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Audio. Never, ever, forget that! ò_ó
On a more serious note: you'd need a lot more than those three. But try and think about it yourself. Go play a game and ask yourself: what's all running in the background? What makes this experience (or breaks... |
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Posted November 8, 2009 2:58:49 PM
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Moving the camera around a scene with a mouse?
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I don't think that sharing code would make it any simpler. In fact, NeHe is simply sharing code too.
What seems to go wrong in the first place? |
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Posted October 25, 2009 7:25:39 PM
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Isometric Tiles Culling
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First things first: don't draw anything that's not currently in your view. Of course, you'd first have to know what exactly IS in view, and what not.
So, as rxa suggested: get those transformations working, then find out a way to check if something'... |
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Posted June 4, 2009 5:59:58 AM
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Flipping an image when drawing
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Hehehe...why don't you just try it out, mate? And report back with some results? ;) |
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Posted March 2, 2009 2:55:45 AM
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View All Replies Made By This User
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