glsl: Change texel offsets to a single vector rvalue.

Having these as actual integer values makes it difficult to implement
the texture*Offset built-in functions, since the offset is actually a
function parameter (which doesn't have a constant value).

The original rationale was that some hardware needs these offset baked
into the instruction opcode.  However, at least i965 should be able to
support non-constant offsets.  Others should be able to rely on inlining
and constant propagation.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/glsl/opt_tree_grafting.cpp b/src/glsl/opt_tree_grafting.cpp
index 9917c045b1..ae77408dbe 100644
--- a/src/glsl/opt_tree_grafting.cpp
+++ b/src/glsl/opt_tree_grafting.cpp
@@ -245,6 +245,7 @@ ir_tree_grafting_visitor::visit_enter(ir_texture *ir)
 {
    if (do_graft(&ir->coordinate) ||
        do_graft(&ir->projector) ||
+       do_graft(&ir->offset) ||
        do_graft(&ir->shadow_comparitor))
 	 return visit_stop;