diff options
author | Paul Berry <[email protected]> | 2013-11-28 08:13:41 -0800 |
---|---|---|
committer | Paul Berry <[email protected]> | 2013-12-09 10:54:33 -0800 |
commit | e00b93a1f7b4bc7f5e887591c000524e13f80826 (patch) | |
tree | 4bfdfa0f56747019aed8c427fb3349adc1e53e7e /src/mesa/state_tracker | |
parent | 2c17f97fe6a40e4a963fb4eec0ea0555f562b1be (diff) |
glsl/loops: replace loop controls with a normative bound.
This patch replaces the ir_loop fields "from", "to", "increment",
"counter", and "cmp" with a single integer ("normative_bound") that
serves the same purpose.
I've used the name "normative_bound" to emphasize the fact that the
back-end is required to emit code to prevent the loop from running
more than normative_bound times. (By contrast, an "informative" bound
would be a bound that is informational only).
Reviewed-by: Jordan Justen <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Diffstat (limited to 'src/mesa/state_tracker')
-rw-r--r-- | src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp index f748ed85092..18d2a5b0a41 100644 --- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp +++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp @@ -1137,8 +1137,10 @@ glsl_to_tgsi_visitor::visit(ir_variable *ir) void glsl_to_tgsi_visitor::visit(ir_loop *ir) { - /* Any bounded loops should have been lowered by lower_bounded_loops(). */ - assert(ir->counter == NULL); + /* Any normative loop bounds should have been lowered by + * lower_bounded_loops(). + */ + assert(ir->normative_bound < 0); emit(NULL, TGSI_OPCODE_BGNLOOP); |