[Mesa-dev] Which code will do drawing commands in "ctx->buf"?

[Homer Hsing]

I have a newbie question when tracing a bug in MESA.

After "__glXFlushRenderBuffer" calling "xcb_glx_render", which code will do
drawing commands in "ctx->buf" ?

Reference: in MESA src/glx/glxext.c,
GLubyte * __glXFlushRenderBuffer(struct glx_context * ctx, GLubyte * pc) {
/* some code omitted */
xcb_glx_render(c, ctx->currentContextTag, size,
                     (const uint8_t *) ctx->buf);
/* some code omitted */
}
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