GLCLEARCOLOR(3G)

📦 version 24.3.3, in opensuse-leap 16.0

NAME 🎀

Okay so this is glClearColor, straight from the 3G manual, and she is here to specify the clear values for your color buffers. Slay.

C SPECIFICATION ✨

The C signature is literally this, bestie — copy it exactly:

       void glClearColor( GLclampf red,
                          GLclampf green,
                          GLclampf blue,
                          GLclampf alpha )

PARAMETERS 💖

  • red, green, blue, alpha — these specify the red, green, blue, and alpha values used when the color buffers are cleared. The initial values are all 0.

DESCRIPTION 🦋

glClearColor specifies the red, green, blue, and alpha values that glClear uses to clear the color buffers. The way that works is simple: you pick the values, and glClear does the clearing with them.

Any values you specify with glClearColor get clamped to the range [0, 1]. Periodt.

No cap: if you pass something outside that range, it’s getting clamped, not kept as-is. 💅

ERRORS 🚨

GL_INVALID_OPERATION is generated if glClearColor is executed between the execution of glBegin and the corresponding execution of glEnd.

Bestie, do not call this inside a glBegin / glEnd block. That is giving “error message incoming” energy. 😭

ASSOCIATED GETS 👀

You can ask for it back with glGet using the argument GL_COLOR_CLEAR_VALUE.

SEE ALSO 🌈

  • glClear(3G) — the iconique bestie that actually clears using the values you set here.

That’s the whole page, bestie 💜 — the footer is just the GLCLEARCOLOR(3G) manual tag, with no extra source/version or date info beyond that. 🫶

📦 where this page comes from