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* target-helpers: remove swrast_xlib.c helperKeith Whitwell2010-03-102-112/+0
| | | | | | | | | | This was a good idea, but ended up tying the build systems in knots. We can revisit this later, in particular if we can put in place dummy implementations of cell_create_screen(), llvmpipe_create_screen() which just return NULL if the driver isn't available. In the meantime, just duplicate this smallish function in the two places it was being called.
* target-helpers: helper for injecting common debug layersKeith Whitwell2010-03-103-11/+83
| | | | | | | Add a helper gallium_wrap_screen() for injecting the commonly used extra layers into a gallium stack. Currently that's just the trace module and identity layer, but there could be more in the future, eg. a validation layer.
* target-helpers: missing filesKeith Whitwell2010-03-092-0/+121