Irrlicht Engine

Hey guys. This is a shoot out to all the Irrlicht noobs in the world. I was inspired by Irrlicht for a very long time, about seven years ago I wrote my first Hello World C++ program using Irrlicht. Irrlicht was fun to play with and try to learn graphics programming. However, I felt like in some ways...

I'm 26 and I first started learning Irrlicht in 2008. I learned C++ to use Irrlicht when studying in university and made some "hacker" style applications, nothing serious. My newly developed C++ skills allowed me to take a job straight out of university working in databases for about 9 mon...

Lesson learned: always make sure your matrix methods use column major multiplication for OpenGL . That took too much time to find .

I am trying to make a FPS camera class that works well with Irrlicht and uses a ton of OGL4.0 calls using shaders. The class is based off Quaternion rotation and I simple transform the normalized view direction by the axis and angle. I got it working except for one thing that I can't understand. Whe...

I am going to use this because it has a built in sort method that always returns the first intersection so no sorting is needed. It is easier to digest in my opinion.

http://diglib.eg.org/EG/DL/WS/EGGH/EGGH89/061-073.pdf

Based on my research k-dr trees seem more efficient for this kind of thing.

I am thinking of an algorithm to detect when an user selects an object with the mouse. 1. Using an AABB Octree store all objects, objects contain triangles, and triangles contain points. 2. Fire a ray from the camera to the mouse location, convert screen coords to a 3D ray. 3. Traverse the Octree, t...

Thanks Mel! However before I embark on this path I might also ask if this method would be equally as fast as using OpenCL to do the array processing instead of OpenGL. I have a portion of code I think will run much faster on the gpu than the cpu and its not directly related to graphics. Would having...

When you create a VBO with OpenGL and buffer vertex data to the graphics card via glBufferData(), is it possible to then buffer the data off the card after applying a shader? I basically want to use OpenGL shaders to run array processing. Therefore I need input and output. I am aware that you can de...

The gcc compiler use a Taylor series approximation for a number in between 1/sqrt(2) and sqrt(2) using an argument reduction formula. For 53 bits it looks like they truncate it at about 6 summations which surprised me. I guess the AGM method is for bits >> 53 like 1000 bit precision etc.

Hey guys, I have been doing some work with elementary functions and wanted to increase the speed of ln(x) and exp(x). I believe most compilers do not take full advantage of the cpu and thus I am writing my own. However before I can optimize I need an algorithm that shows promise. I tried an implemen...

I switch to VS 2010 C++ and I just add the .obj files in the linker section and it works! I forgot extern "C" though lol. I think my C::B setup at work is not setup right because there was already a GCC compiler on this machine and although I can get a simple hello world to build I can not...

Mel, I am a little confused on what your advice is. Maybe I can clarify. I have my .asm files, I run nasm assembler on them to get .obj files. Now I could make these .obj files into a .lib and then link with C::B which should work but I dont know how to make a .lib! I have done this before inside co...

Hello everyone, I am curious if there is a way of linking compiled object files inside the Code Blocks IDE? For example, I have written some low level I/O functions in assembler and have compiled it with NASM assembler. I have the win32 .obj (I am compiling on windows), is there a way to link this w...

So the US government never needed SOPA/PIPA because they shut down megaupload yesterday. Anyone have any project files on there? They actually seized the company in the Netherlands! Federal crimes? Yea right.