GLBINDSAMPLER(3G)

💅 GLBINDSAMPLER(3G) — bind a named sampler, slay

Okay so this is the glBindSampler page from the 3G manual, bestie, and it’s literally about binding a named sampler to a texturing target. Let’s get into it. ✨

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🌸 NAME 🌸

glBindSampler — bind a named sampler to a texturing target. Periodt. 💅

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🧚 C SPECIFICATION 🧚

The C signature is exactly this, no cap:

void glBindSampler(GLuint unit, GLuint sampler);

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🎀 PARAMETERS 🎀

• unit — the index of the texture unit where the sampler gets bound. Like, which unit are we pulling up to? 👀
• sampler — the name of a sampler. That’s the one, bestie.

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🦋 DESCRIPTION 🦋

glBindSampler binds sampler to the texture unit at index unit. Lowkey important: sampler must be zero or the name of a sampler object previously returned from a call to glGenSamplers(). And unit must be less than the value of GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS. That’s the vibe check, and you gotta pass it. ✨

When a sampler object is bound to a texture unit, its state supersedes that of the texture object bound to that texture unit. Translation: the sampler object is the main character now. 👑

If the sampler name zero is bound to a texture unit, the currently bound texture’s sampler state becomes active. And yes, a single sampler object may be bound to multiple texture units simultaneously. Sharing is caring, fr fr. 🫶

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💜 NOTES 💜

glBindSampler is available only if the GL version is 3.3 or higher. That’s what the page says, so we’re saying it too. 💀

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🔥 ERRORS 🔥

• GL_INVALID_VALUE is generated if unit is greater than or equal to the value of GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS. Too high, bestie — invalid.
• GL_INVALID_OPERATION is generated if sampler is not zero or a name previously returned from a call to glGenSamplers(), or if such a name has been deleted by a call to glDeleteSamplers(). 🫠 That’s a whole situation.

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🌈 ASSOCIATED GETS 🌈

• glGet() with argument GL_SAMPLER_BINDING — that’s how you ask what’s bound, iykyk.

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⭐ VERSION SUPPORT ⭐

For glBindSampler, the version-support table says this, and I’m keeping every single version name because we do not skip details in this house:

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

The NOTES section still says “3.3 or higher,” and the table marks 3.2 too — both of those are in the original page, so I’m serving both, no editing, no cap. 😭

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🍓 SEE ALSO 🍓

• glGenSamplers()
• glDeleteSamplers()
• glGet()
• glSamplerParameter()
• glGetSamplerParameter()
• glGenTextures()
• glBindTexture()
• glDeleteTextures()

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👑 COPYRIGHT 👑

Copyright © 2010-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.

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🎀 COPYRIGHT (yes, again) 🎀

Copyright © 2010-2014 Khronos Group

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Source/version footer vibe: [FIXME: source], dated 08/09/2021, stamped GLBINDSAMPLER(3G). Byeee bestie 🫶💖