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  Shadow Mapping, minus the GLUT  (Read 1139 times)
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Offline OpenGLShaders

Junior Devvie


Medals: 4
Exp: 2 years



« Posted 2012-06-29 00:36:06 »

Recently I have been working on shadow mapping, and have found some(what look like) good tutorials.
However, they all are in C++ and they all use GLUT.

It looks like they need this line:
1  
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_ALPHA | GLUT_DEPTH);


If I understand it correctly, I shouldn't need to worry about the first 3 modes,
But I am guessing I need either a render buffer, or some sort of pixel format in display.create() to replace the fourth mode. Or am I wrong, and I don't need that at all?  Roll Eyes

Any help is greatly appreciated.

~OpenGLShaders
Offline ra4king

JGO Kernel


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I'm the King!


« Reply #1 - Posted 2012-06-29 05:32:23 »

Assuming that you're using LWJGL, the Display class is basically the 'GLUT' of Java. Display.create() creates a double buffered OpenGL context with a 24-bit color buffer and an 8-bit depth buffer, so you don't need to worry about any GLUT stuff at all.

Offline OpenGLShaders

Junior Devvie


Medals: 4
Exp: 2 years



« Reply #2 - Posted 2012-06-29 12:07:00 »

Wow, I feel stupid  Smiley Thanks for your help
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Offline sproingie

JGO Kernel


Medals: 202



« Reply #3 - Posted 2012-06-30 00:53:35 »

Display, Keyboard, and Mouse make up the GLUT replacements.  Note that none of it is event-based like GLUT, you have to poll for input and window events, so any C++ code using the callbacks will have to be switched around a bit.  

GLUT also defines some geometry primitives, including the iconic teapot, but those are very old-school and don't fit in modern opengl.  If you're really jonesing for a teapot, I did get around to porting the one in JOGL, but I'd recommend going with a VBO version of the teapot and working with that instead.
Offline OpenGLShaders

Junior Devvie


Medals: 4
Exp: 2 years



« Reply #4 - Posted 2012-07-03 23:39:03 »

Ok, but first I have to make the shadows Cheesy
I don't know what, but they aren't drawing.
Maybe something with my matrices. Sad
Offline theagentd

« JGO Bitwise Duke »


Medals: 365
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Exp: 8 years



« Reply #5 - Posted 2012-07-04 01:12:35 »

Ok, but first I have to make the shadows Cheesy
I don't know what, but they aren't drawing.
Maybe something with my matrices. Sad
You need an FBO (or the deprecated PBO) to do shadow mapping.

Myomyomyo.
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