After doing the tutorial on lighthouse3d.com I had a look through some of the tutorials that were for further along and realised that they really took things too slow and also skipped over all the important parts of OpenGL. I had a browse around on the internet and realised that GLUT( the library i was using ) had not been supported for a long time and also was not that great due to its over simplicity. It also did not allow much room for expansion in to shader work.
After this all happened I had another look round and found a great tutorial site that takes an in depth look into the shaders and the OpenGL functionality. Although this tutorial still uses a few librarys I have begun to realise that due to the open-source nature of OpenGL that this was going to be the case no matter what.
Okay so i'm now following this new tutorial chain on www.open.gl. This website is so simplistic and well written that following it has been extremely simple so far. I have learnt about VBO's and VAO's and all other sorts of OpenGL based objects. This tutorial is taking a little longer as i'm really going over the exact procedures of setting up a window and context to ensure that I'm doing it correctly and efficiently.
After the first tutorial you end up with a rectangle with different colours in each corner, like the image below:
After this all happened I had another look round and found a great tutorial site that takes an in depth look into the shaders and the OpenGL functionality. Although this tutorial still uses a few librarys I have begun to realise that due to the open-source nature of OpenGL that this was going to be the case no matter what.
Okay so i'm now following this new tutorial chain on www.open.gl. This website is so simplistic and well written that following it has been extremely simple so far. I have learnt about VBO's and VAO's and all other sorts of OpenGL based objects. This tutorial is taking a little longer as i'm really going over the exact procedures of setting up a window and context to ensure that I'm doing it correctly and efficiently.
After the first tutorial you end up with a rectangle with different colours in each corner, like the image below:
After doing this tutorial I have learnt a lot about the basics of OpenGL and I can see that it does match DirectX in certain ways except a lot of the terms are changed for example and Element Buffer seems to be the same as an Index Buffer in DirectX.
The next tutorial goes on to explain texturing and then by two or three tutorials we are in the realms of post processing effects. I'm pretty excited to get stuck in, although I will be focusing a little more on the structure of my current program, separating all the functionality into objects and applying some sort of logging system. That way progress should be a little easier.
:)
The next tutorial goes on to explain texturing and then by two or three tutorials we are in the realms of post processing effects. I'm pretty excited to get stuck in, although I will be focusing a little more on the structure of my current program, separating all the functionality into objects and applying some sort of logging system. That way progress should be a little easier.
:)
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