I hadn't noticed you could do this, but glsl1 tests caught it. Fixes:
glsl1-Swizzled writemask
glsl1-Swizzled writemask (2)
glsl1-Swizzled writemask (rgba)
glsl1-Swizzled writemask (stpq)
Instead of using ir_call::callee, search for the signature in the
linked shader. This will allow resolving calls from functions
imported from other shaders. The ir_call::callee pointer in the
imported function will still reference a signature in the original shader.
The list of shaders to search needs to be provided as an explicit
parameter to support coming changes. At that point there is no reason
for it to be in the class. Also, fix some of the 'const' decorators.
Give ir_function::parameter_lists_match_exist similar treatment. Make
the parameters const, and propogate the constness as far as it will
trivially go.
It now works correctly when nodes are removed, as it was originally
intended to do; it no longer processes nodes added to the list before
the current node, nor those added immediately after the current node.
This matches the behavior of Linux's list_for_each_safe.
The node being processed may be removed from the list and put in a
different list. Not using the safe version caused list processing to
change streams after moving a node.
For the shader containing 'main', use the linked shader (i.e., the
clone of the original shader that contained main) as the source for
global instructions to move into main.
When faced with a constructor like 'ivec4(0, 2, 0, 0)', we would
manage to get a value of 2 instead of 0 for the first "0". Usually 2
characters past "0" would point at some junk and lex as 0 anyway.
Fixes glsl-octal and glsl-unused-varyings.
This is a big deal for debugging if nothing else ("what class is this
ir_instruction, really?"), but is also nice for avoiding building a
whole visitor or an if (node->as_whatever() || node->as_other_thing())
chain.
The big change is to delay address reg setup until the instruction
that needs the deref. It was hard to use the deref chain support for
the LHS because it does the copy of the dereffed value to a temporary
(to avoid problems when two src regs are array derefs), so we wouldn't
haev a pointer to actual storage in the end.
Fixes glsl-vs-arrays on swrast.
