diff options
| author | Matt Turner <[email protected]> | 2012-06-04 16:17:12 -0400 |
|---|---|---|
| committer | Matt Turner <[email protected]> | 2012-06-12 18:51:25 -0400 |
| commit | d7bef19c7ff40f0b83a42fdb8509eed3ad1e40a3 (patch) | |
| tree | c3fbdadc57224ec7285228f84845f0a284fff30a /src/glsl | |
| parent | 82ce93a8fdcb18b17263a388fa0bd8dbc1889857 (diff) | |
glsl: Check for zero vectors in ir_binop_dot
Reviewed-by: Kenneth Graunke <[email protected]>
Diffstat (limited to 'src/glsl')
| -rw-r--r-- | src/glsl/opt_algebraic.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp index d3976126050..5a9881dbebe 100644 --- a/src/glsl/opt_algebraic.cpp +++ b/src/glsl/opt_algebraic.cpp @@ -309,6 +309,13 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir) } break; + case ir_binop_dot: + if (is_vec_zero(op_const[0]) || is_vec_zero(op_const[1])) { + this->progress = true; + return ir_constant::zero(mem_ctx, ir->type); + } + break; + case ir_binop_logic_and: /* FINISHME: Also simplify (a && a) to (a). */ if (is_vec_one(op_const[0])) { |