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54 Commits

Author SHA1 Message Date
Stephen Williams e708a5b59d Handle vec4 part selects / vec4 cassign / repeat statements 
These features need to be adapted to the vec4 stack.
 2014-01-04 22:11:07 +00:00
Stephen Williams d55e4c0552 Redesign support for system functions that return vec4 
Redsign the handling of the return value, including a rework of
the %vpi_func syntax to carry the needed information.

Add a few more arithmetic operator instructions.
 2014-01-04 22:06:58 +00:00
Stephen Williams 54926840e6 Handle vec4 stack version of concatenation. 2013-12-28 07:50:37 +02:00
Stephen Williams 5ef077fdf6 Start work on converting vec4 expressions to use stack. 
Instead of using a bit4 space to hold thread vectors, create a
vec4 stack--much like the real, string, and object stacks--to
hold intermediate values.
 2013-12-27 17:04:42 +02:00