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This is a publicly exposed texture backend to create a texture which contains the contents of an X11 pixmap. The API is currently marked as experimental. The backend internally holds a handle to another texture. All of the backend virtuals simply redirect to the internal texture. The texture can optionally be automatically updated if the automatic_updates parameter is TRUE. If set then Cogl will listen for damage events on the pixmap and update the texture accordingly. Alternatively a damage object can be created externally and passed down to Cogl. The updates can be performed with XGetImage, XShmGetImage or the GLX_EXT_texture_pixmap extension. If the TFP extension is used it will optionally try to create a rectangle texture if the driver does not support NPOTs or it is forced through the COGL_PIXMAP_TEXTURE_RECTANGLE or CLUTTER_PIXMAP_TEXTURE_RECTANGLE environment variables. If the GLXFBConfig does not support mipmapping then it will fallback to using X{Shm,}GetImage. It keeps a separate texture around for this so that it can later start using the TFP texture again if the texture is later drawn with mipmaps disabled. |
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cogl | ||
doc | ||
pango | ||
Makefile.am |