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This add primitive restart support to the prim conversion.
This involves changing the API for the translate functions
as we need to pass the prim restart index and the original
number of indices into the translate functions.
primitive restart is support for quads, quad strips
and polygons.
This deal with the case where the actual number of output
primitives is less than the initially calculated number,
by filling the rest of the output primitives with the restart
index, the other option is to reduce the output prim number,
but that will make the generator code a bit messier.
Reviewed-by: Brian Paul <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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Add 'start' parameter to generator/translator.
Signed-off-by: Rob Clark <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
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When the fill mode is PIPE_POLYGON_MODE_LINE we were basically
converting the polygon into triangles, then drawing the outline of all
the triangles. But we really only want to draw the lines around the
perimeter of the polygon, not the interior lines.
NOTE: This is a candidate for the 7.10 branch.
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Most of the time unfilled rendering requires a lot more thought than
just translating triangles to lines or points. But sometimes, you can
do exactly that, and it can be quite a bit quicker. Add code to do the
translation. The caller has to determine whether it's a legal thing
to do in the current state, in particular you'd need:
- culling disabled
- offset disabled
- same front and back fill modes
- possibly other stuff I can't think of.
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