X11R7.4 - man page for xdbeswapbuffers (x11r4 section 3)
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XdbeSwapBuffers(3) X FUNCTIONS XdbeSwapBuffers(3)
XdbeSwapBuffers - swaps front and back DBE buffers.
This function swaps the front and back buffers for a list of windows. The argument
num_windows specifies how many windows are to have their buffers swapped; it is the number
of elements in the swap_info array. The argument swap_info specifies the information
needed per window to do the swap.
The XdbeSwapInfo structure has the following fields:
swap_window specifies the window for which to swap buffers. swap_action specifies the
swap action to use for this swap_window.
swap_action determines what will happen to the new back buffer of the swap_window it is
paired with in the list in addition to making the old back buffer become visible. The
defined actions are as follows:
The contents of the new back buffer become undefined. This may be the most effi-
cient action since it allows the implementation to discard the contents of the buf-
fer if it needs to.
The unobscured region of the new back buffer will be tiled with the window back-
ground. The background action allows devices to use a fast clear capability during
The unobscured region of the new back buffer will be unmodified by the swap.
The unobscured region of the new back buffer will be the contents of the old back
A non-double-buffered window was specified or a window was specified twice.
An invalid window was specified.
An invalid swap action was specified.
DBE, XdbeAllocateBackBufferName(), XdbeBeginIdiom(), XdbeDeallocateBackBufferName(),
XdbeEndIdiom(), XdbeFreeVisualInfo(), XdbeGetBackBufferAttributes(), XdbeGetVisualInfo(),
X Version 11 libXext 1.0.5 XdbeSwapBuffers(3)
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