Keith Packard 62fc98cb88 Handle matrix computation overflow in RRTransformCompute ...

If the computation of the composite fixed-point transform for RandR
overflows at any point, take the resulting floating point transform and
scale that back to fit in a fixed point matrix. This ensures that a matrix
will always be available, although perhaps at reduced precision. Someday we
should add floating point matrices to Render.

Signed-off-by: Keith Packard <keithp@keithp.com>

2009-02-03 20:20:57 -08:00

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