OpenGL vs DirectX

if you are reading this post, you have interest in animation or game development.

models what you see on the screen are developed using some modelling softwares like CAD,MAYA,BLENDER etc

the background engine or the source which runs these models are c or c++ or other programming languages

OpenGl and Directx are some APIs used for using those developed models and creating game logic etc.

If you are in any confusion to select which api see the table they will make you to conclude.

Feature:	OpenGL:	DirectX:
vertex blending	N/A	Yes
Multiple Operating systems	Yes	No
Extension Mechanism	Yes	Yes
Development	Multiple member Board	Microsoft
Through Specification	Yes	No
Two-Sided lighting	Yes	No
Volume Textures	Yes	No
Hardware independent Z-buffers	Yes	No
Accumulation buffers	Yes	No
Full Screen Antialiasing	Yes	Yes
Motion Blur	Yes	Yes
Depth of field	Yes	Yes
Stereo Rendering	Yes	No
Point-size/line-width attributes	Yes	No
Picking	Yes	No
Parametric curves and surfaces	Yes	No
Cache geometry	Display Lists	Vertex Buffers
System emulation	Hardware not present	Let app determine
Interface	Procedure calls	COM
Updates	Yearly	Yearly
Source code	Sample	SDK implementation