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Clipboard OpenGL - primitive data types and nomenclature of the OpenGL functions

OpengGl defines some data types primitives used during programming to facilitate the porting from one platform to another. They are exactly the same data types defined atraverso most modern programming languages, but with a different nomenclature:

OpenGL Data Type	internal representation	equivalent C
GLbyte	8-bit signed char integer
GLshort	16-bit integer	short
GLint	32-bit integer	long
GLfloat	32-bit floating point	float
GLdouble	64 bit floating point	double
GLbyte	8 bit integer	signed char
GLubyte, GLBoolean	8 bit unsigned integer	unsinged char
GLushort	16 bit unsigned integer	unsigned short
GLuint, GLenum, GLbitfield	32 bit unsigned char	unsigned long
GLchar, GLsizeiptr	8 bit charachter	char

Tutti i tipi di dato che cominciano con GL denotano membership in the OpenGL framework.

As for the functions defined by OpenGL, the Convention on nomenclature can be summarized with the following method:

\u0026lt;area of \u200b\u200bdll> \u0026lt;command> \u0026lt;Number of argomenti> type> of argomenti>

where number and type of arguments are optional elements. Here is the function to define a color's signature:

 glColor3f ([....]) 

with variations

 glColor4f ([...]); 
 glColor4d ([....] ) 
 glColor3i ([....]); 
 

and many others, categorized according to the type of data accepted parameters and their number.