12
votes
4answers
2k views

How can I use the graphics pipeline to render volumetric data based on a density function?

Both graphics APIs (OpenGL and DirectX) devise a well defined pipeline in which several stages are programmable. These programmable stages require to take a fixed minimum amount of data and are ...
3
votes
2answers
242 views

Is there any reason why there isn't a cross-platform implementation of DirectX?

Similar to how Mono can compile C# to various platforms, why isn't there an API that conforms to DirectX's specifications but can produce binaries for all platforms? I understand that there is OpenGL ...
-3
votes
2answers
259 views

Need help with game development. (I know C++ and I need to learn an API) [closed]

I know C++ but I don't know an API looking at Directx. I can't find any good tutorials and really need some help to start 2D game development. I'm doing an game development focused Art course that ...
0
votes
1answer
471 views

OpenGL 2.1+ Render with data returned form assimp library

I have just readed this tutorial about load a 3D model file: http://www.lighthouse3d.com/cg-topics/code-samples/importing-3d-models-with-assimp/. Its render routine uses a recursive_render function to ...
9
votes
1answer
10k views

when to use vertex array and when to use vbo

i'm trying to learn about vertex array and vertex buffer object, but i don't understand the differences in term of: case-of-use (static geomerty like terrains, geometry that change every frame like ...
26
votes
4answers
16k views

Vertex Array Object (OpenGL)

I've just started out with OpenGL I still haven't really understood what Vertex Array Objects are and how they can be employed. If Vertex Buffer Object are used to store vertex data (such as their ...
10
votes
5answers
660 views

API agnostic bridges (ie. OpenGL/D3D/Whatever). Do you use them, how you make them. Pro's and Con's

You are making a 3d engine. You want best of multiplatform worlds. Suddenly you realize that if you want to use Direct3D on Windows machines and OpenGL on OSX/Linux, you'll have to sacrifice supported ...