diff options
| -rw-r--r-- | src/mesa/program/ir_to_mesa.cpp | 48 |
1 files changed, 44 insertions, 4 deletions
diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp index f0e14b8ece3..839d6f04673 100644 --- a/src/mesa/program/ir_to_mesa.cpp +++ b/src/mesa/program/ir_to_mesa.cpp @@ -882,13 +882,53 @@ ir_to_mesa_visitor::visit(ir_variable *ir) void ir_to_mesa_visitor::visit(ir_loop *ir) { - assert(!ir->from); - assert(!ir->to); - assert(!ir->increment); - assert(!ir->counter); + ir_dereference_variable *counter = NULL; + + if (ir->counter != NULL) + counter = new(ir) ir_dereference_variable(ir->counter); + + if (ir->from != NULL) { + assert(ir->counter != NULL); + + ir_assignment *a = new(ir) ir_assignment(counter, ir->from, NULL); + + a->accept(this); + delete a; + } ir_to_mesa_emit_op0(NULL, OPCODE_BGNLOOP); + + if (ir->to) { + ir_expression *e = + new(ir) ir_expression(ir->cmp, glsl_type::bool_type, + counter, ir->to); + ir_if *if_stmt = new(ir) ir_if(e); + + ir_loop_jump *brk = new(ir) ir_loop_jump(ir_loop_jump::jump_break); + + if_stmt->then_instructions.push_tail(brk); + + if_stmt->accept(this); + + delete if_stmt; + delete e; + delete brk; + } + visit_exec_list(&ir->body_instructions, this); + + if (ir->increment) { + ir_expression *e = + new(ir) ir_expression(ir_binop_add, counter->type, + counter, ir->increment); + + ir_assignment *a = new(ir) ir_assignment(counter, e, NULL); + + a->accept(this); + delete a; + delete e; + } + ir_to_mesa_emit_op0(NULL, OPCODE_ENDLOOP); } |