Input Variables Question

OpenGL
1

why should one make something like this in a vertex shader?


layout (location = 0) in vec4 position;
layout (location = 1) in vec4 color;

smooth out vec4 theColor;

void main()
{
    gl_Position = position;
    theColor = color;
}

Does gl_vertex and gl_color are now deprecated?

I’m confusing about the new GLSL spec.

if, for example, gl_color is now deprecated, how can I read vertex colors inside a vertex shader using glColorPointer function?

Should I always use glVertexPointer to set per-vertex attributes?

2

if, for example, gl_color is now deprecated, how can I read vertex colors inside a vertex shader using glColorPointer function?

You don’t. You use glVertexAttribPointer.

Or you just create a compatibility context and keep doing things the way you’ve been doing them.

3

I’ll use glVertexAttribPointer. Thank you very much

4

Another thing.

The function ftransform() is now deprecated too?

5

The function ftransform() is now deprecated too?

Yes, but so are the effective inputs to it (gl_Vertex and the MODELVIEW and PROJECTION) matrices, so it’s not like it would be particularly useful :wink:

6

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