Syntax error using gl_FragDepth

OpenGL
1

Hi folks,

I am getting the following error when doing a glCompileShader() on my frag shader code:

error C0000: syntax error, unexpected $undefined, expecting “::” at token “<undefined>”

The line of code that is complaining about is:

gl_FragDepth​ = 1.0f;

I have never seen this error ever. Any idea what might cause that?

For the record, I tried explicitly setting my shader version to
#version 120
and also a newer version
#version 150
Same error. Any help decoding this error would be greatly appreciated.

2

The line of code that is complaining about is

First rule of compiler errors: just because it lists that line does not mean that it’s the cause of the error. That’s just where the compiler realized that something was wrong. If a line of code looks innocuous, that means the error probably happened somewhere before then.

Even more confusing is that :: is not a token of GLSL. It should never be something the compiler expects. So I’m going to go out on a limb and suggest that you’re probably passing the shader text to OpenGL incorrectly.

Oh, and #version declarations should not be considered optional.

3

[QUOTE=Alfonse Reinheart;1280096]First rule of compiler errors: just because it lists that line does not mean that it’s the cause of the error. That’s just where the compiler realized that something was wrong. If a line of code looks innocuous, that means the error probably happened somewhere before then.

Even more confusing is that :: is not a token of GLSL. It should never be something the compiler expects. So I’m going to go out on a limb and suggest that you’re probably passing the shader text to OpenGL incorrectly.[/QUOTE]

And, it turns out that the problem was that MSVC was putting some garbage chars in the raw text, and hiding it from my view. I looked at the file in another editor and saw this:

gl_FragDepth​ = 1.0f;

Works fine when I clean that up.

Good to know. Thanks!

4

FYI if you’re curious about where that character came from.

5

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