OpenGL data types

[davidthefat]

Are they really necessary? I can just use the regular old data types in place of them right? Any pros and cons?

[GroundUpEngine]

Are they really necessary? I can just use the regular old data types in place of them right? Any pros and cons?

There are no pros and cons as far as I know of, but what I do know is thier necessary because they are an important part of the OpenGL syntax e.g.

The syntax for binding a texture is -> glBindTexture(GLenum target, GLuint texture);

Code: Select all

This is correct->

GLuint tex[5];
glBindTexture(GL_TEXTURE_2D, tex[0]);

Code: Select all

This is incorrect->

unsigned int tex[5];
glBindTexture(GL_TEXTURE_2D, tex[0]);

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Meaning that without them, the wrong texture may show up or no texture will be draw at all.

Hope it help

[davidthefat]

Then How will I use them with SDL? Do I have to convert them or something?

[RyanPridgeon]

You can play it safe by just typecasting.

unsigned int x;
x = 123;
glSomething( (GLuint) x );

[GroundUpEngine]

Edit:

What he said.
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[K-Bal]

These #typedefs ensure that your variables always have the same number of bits on each platform. I use them.

[short]

edit: what kbal said.

[Falco Girgis]

These #typedefs ensure that your variables always have the same number of bits on each platform. I use them.

^ this, gentlemen, is very important when you're trying to develop software for multiple platforms.

All sorts of shitty bugs could creep into your code when you start having data types that are different sizes (and hold different max numbers) on different platforms.