Mesa 的 GLX 实现

GLX

GLX (Initialism for “OpenGL Extension to the X Window System”) is an extension to the X Window System core protocol providing an interface between OpenGL and the X Window System as well as extensions to OpenGL itself. (From WiKi)

Mesa的 GLX 实现自从 Delete Mesa Classic 已经从原来的 3 种变成现在的 2 种:

• dri
• xlib

如果是xlib, 它的源码位于

• mesa/drivers/x11

如果是gallium-xlib, 它的源码位于

• gallium/winsys/sw/xlib
• gallium/frontends/glx/xlib
• gallium/targets/libgl-xlib

xlib

dri

在 Linux 下 dri-based glx 实现我们只关注 3 个实现：

源文件	关键函数
dri2_glx.c	dri2CreateScreen()
dri3_glx.c	dri3_create_screen()
drisw_glx.c	driswCreateScreenDriver()

dri2CreateScreen

driswCreateScreenDriver

dri3_create_screen