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https://gitlab.uni-freiburg.de/opensourcevdi/spice-protocol
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This new command is intended to be used for implementing the Composite request from the Render X extension. See http://www.x.org/releases/current/doc/renderproto/renderproto.txt for a description of the Render extension. Composite has three fields: src, mask and destination, of which mask is optional (can be NULL). There are also two pointers to transformations, one for each of src and mask. The command also has 32 bits of flags which indicates - which compositing operator to use - which filters to apply when sampling source and mask - which repeat mode to apply when sampling source and mask - whether the mask should be considered to have 'component alpha' - whether the alpha channel of any of the images should be ignored. The last one of these features is necessary because in the X protocol an offscreen surface is simply a collection of bits with no visual interpretation. In order for Render to use these bits, a wrapper object is used that contains the pixel format. Since one offscreen surface can be wrapped by multple objects, there is not a one-to-one correspondence between pixel formats and surfaces. In SPICE surfaces do have an associated pixel format, which means the above feature of Render cannot be supported without adding a similar concept to the wrapper object to the SPICE protocol. However, the most common use for having multiple wrappers for one offscreen surface is to interpret an alpha surface as not having an alpha channel or vice versa. |
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| spice | ||
| AUTHORS | ||
| autogen.sh | ||
| ChangeLog | ||
| configure.ac | ||
| COPYING | ||
| git.mk | ||
| includes.sed | ||
| Makefile.am | ||
| NEWS | ||
| README | ||
| rename-identifiers.sh | ||
| renames | ||
| spice-protocol.pc.in | ||