XCB_GLX_GET_CONVOLUTION_PARAMETERFV_DATA_LENGTH(3)

🌸 xcb_glx_get_convolution_parameterfv(3) 🌸

okay bestie, welcome to the XCB Requests section of the manual, and today's main character is xcb_glx_get_convolution_parameterfv 💅

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✨ NAME ✨

xcb_glx_get_convolution_parameterfv — that's literally it, the manpage gives us no one-liner, so we're keeping it mysterious 🙈

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🦋 SYNOPSIS 🦋

#include <xcb/glx.h>

💖 Request function 💖

xcb_glx_get_convolution_parameterfv_cookie_t
       xcb_glx_get_convolution_parameterfv(xcb_connection_t *conn,
       xcb_glx_context_tag_t context_tag, uint32_t target,
       uint32_t pname);

🎀 Reply datastructure 🎀

typedef struct xcb_glx_get_convolution_parameterfv_reply_t {
    uint8_t           response_type;
    uint8_t           pad0;
    uint16_t          sequence;
    uint32_t          length;
    uint8_t           pad1[4];
    uint32_t          n;
    xcb_glx_float32_t datum;
    uint8_t           pad2[12];
} xcb_glx_get_convolution_parameterfv_reply_t;

🌈 Reply function 🌈

xcb_glx_get_convolution_parameterfv_reply_t
       *xcb_glx_get_convolution_parameterfv_reply(xcb_connection_t *conn,
       xcb_glx_get_convolution_parameterfv_cookie_t cookie,
       xcb_generic_error_t **e);

⭐ Reply accessors ⭐

xcb_glx_float32_t *xcb_glx_get_convolution_parameterfv_data(const
       xcb_glx_get_convolution_parameterfv_request_t *reply);

int xcb_glx_get_convolution_parameterfv_data_length(const
       xcb_glx_get_convolution_parameterfv_reply_t *reply);

xcb_generic_iterator_t
       xcb_glx_get_convolution_parameterfv_data_end(const
       xcb_glx_get_convolution_parameterfv_reply_t *reply);

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💜 REQUEST ARGUMENTS 💜

• conn — the XCB connection to X11, obvi. it's giving "your link to the server" energy 🔥
• context_tag — TODO: NOT YET DOCUMENTED. yeah bestie, the docs said "no thoughts, head empty" 😭
• target — TODO: NOT YET DOCUMENTED. also a mystery fr fr
• pname — TODO: NOT YET DOCUMENTED. the trilogy of unknowns, iconic honestly 🙈

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🧚 REPLY FIELDS 🧚

• response_type — the type of this reply, which in this case is XCB_GLX_GET_CONVOLUTION_PARAMETERFV. this field also lives in the xcb_generic_reply_t, so you can use it to tell replies apart from each other, like a little name tag at a party 🎀
• sequence — the sequence number of the last request processed by the X11 server. lowkey your receipt number 🧾
• length — the length of the reply, in words (a word is 4 bytes). so, math, but make it X11 💅
• n — TODO: NOT YET DOCUMENTED. we simply do not know her 🫶
• datum — TODO: NOT YET DOCUMENTED. same, bestie, same 😭

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🌸 DESCRIPTION 🌸

…and that's it. that's the description. the manpage left this section completely empty, so there is literally nothing documented here. not me staring at a blank section 💀

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🔥 RETURN VALUE 🔥

Returns an xcb_glx_get_convolution_parameterfv_cookie_t. Errors have to be handled when calling the reply function xcb_glx_get_convolution_parameterfv_reply.

If you want to handle errors in the event loop instead, use xcb_glx_get_convolution_parameterfv_unchecked. See xcb-requests(3) for details.

so like — the cookie is your little "i'll be back for the actual answer" token, and errors? not the function's problem at call time, you deal with them at reply time. periodt 💅

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💀 ERRORS 💀

This request does never generate any errors.

literally never. zero. none. she's unproblematic ✨

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🦋 SEE ALSO 🦋

nothing listed here — the section exists but it's empty, so there's no cross-reference to chase. 🎀

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👑 AUTHOR 👑

Generated from glx.xml. Contact xcb@lists.freedesktop.org for corrections and improvements.

shoutout to the XML generator for doing the heavy lifting 🫶 and yes, if something's wrong, that's the email, bestie 📧

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and that's the whole page, no cap. you read every single field, every TODO, every pad byte, and you ate 💅

signing off from X Version 11, libxcb 1.17.0 — stay slay, stay linked, and always check your reply fields 🌈✨