GLBLENDCOLOR(3G)

📦
version 1.1 · 7 versions
, in centos-stream 9

💅 GLBLENDCOLOR (3G) — ok bestie, let's talk blend color ✨

So you wanna set the blend color? Say less. This is the 3G manual page for glBlendColor, and honestly she's a short one but she matters. Come sit with me 🫶

🌸 NAME

glBlendColor — set the blend color 🎨

✨ C SPECIFICATION

Like, here's exactly how you call her, no cap:

void glBlendColor(GLfloat red, GLfloat green, GLfloat blue,
                  GLfloat alpha);

🎀 PARAMETERS

  • red, green, blue, alpha — these four besties specify the components of GL_BLEND_COLOR 💖

🦋 DESCRIPTION

Okay so here's the tea ☕ — GL_BLEND_COLOR may be used to calculate the source and destination blending factors. Iconic behavior, truly.

The color components are clamped to the range 0 1 before being stored. So don't try anything funny with your values, she will clamp you 🙈

For a complete description of the blending operations, go see glBlendFunc() — she's the main character of that particular story 👑

And the starting point? Initially the GL_BLEND_COLOR is set to (0, 0, 0, 0). That's the default, periodt. 🌈

💀 NOTES

Not me having to tell you this, but the type of the red, green, blue, and alpha parameters was changed from GLclampf to GLfloat. And before you panic — this change is transparent to user code 😌 It's described in detail on the removedTypes() page, iykyk.

🔥 ASSOCIATED GETS

Wanna read the value back? You do it with glGet() with an argument of GL_BLEND_COLOR. That's it, that's the whole vibe check ⭐

👑 VERSION SUPPORT

Okay so this is the part where the original drops a whole spreadsheet at us 📊 — but the short version is very cute: glBlendColor is the function / feature name, and she's supported in every single OpenGL version listed. Every one. All checks. All slay. 💅

Here's the full list of OpenGL versions where glBlendColor gets a ✔:

  • 2.0 — ✔
  • 2.1 — ✔
  • 3.0 — ✔
  • 3.1 — ✔
  • 3.2 — ✔
  • 3.3 — ✔
  • 4.0 — ✔
  • 4.1 — ✔
  • 4.2 — ✔
  • 4.3 — ✔
  • 4.4 — ✔
  • 4.5 — ✔

Twelve for twelve, she ate and left no crumbs 🍓🧚

🌟 SEE ALSO

Go check out her friends, they're all iconic:

  • glBlendEquation()
  • glBlendFunc()
  • glGetString()
  • removedTypes()

Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010-2014 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.

Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010-2014 Khronos Group

And that's the whole page, bestie! 🫶 This little cutie comes to you from [FIXME: source] and is dated 08/09/2021 — go forth and blend responsibly ✨🎀💖

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