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GLSL - struct definition

Started by mirkar Jun 16, 2010 at 3:06 PM 3 replies 1.3k views

Original Post

Jun 16, 2010 at 3:06 PM

Hi All,

struct below is taken from a vertex shader example. I´m just wandering that what does the colon mean (what functionality it has)?

struct OUTPUT {
vector pos : POSITION;
float2 uv : TEXCOORD0;
float z : TEXCOORD1;
float alpha : TEXCOORD2;
};

thnks. in advance

karwosts

112

karwosts

Jun 16, 2010 at 3:17 PM

That's not GLSL, looks like HLSL or CG, not sure.

Pooya65

Jun 17, 2010 at 2:00 AM

Quote:
That's not GLSL, looks like HLSL or CG, not sure.

yes

that is like CG or HLSL defination, but may be works on some nvidia graphic cards. you can combine CG and GLSL on some nv graphics cards and use them together but that isn't safe.

Hodgman

Mod

5,991

Hodgman

Jun 17, 2010 at 2:14 AM

As above, that's HLSL/CG code (same thing), not GLSL.

Anyway, the colon, and the word after it is a semantic. It specifies which "slot" each one of those variables will be placed in.

mirkar

Author

mirkar

Jun 17, 2010 at 5:38 AM

thanks - everybody!

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