diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.cpp | 116 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.h | 1 |
2 files changed, 113 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index df34089e85..1a5808f44e 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -1447,6 +1447,104 @@ fs_visitor::emit_bool_to_cond_code(ir_rvalue *ir) } } +/** + * Emit a gen6 IF statement with the comparison folded into the IF + * instruction. + */ +void +fs_visitor::emit_if_gen6(ir_if *ir) +{ + ir_expression *expr = ir->condition->as_expression(); + + if (expr) { + fs_reg op[2]; + fs_inst *inst; + fs_reg temp; + + for (unsigned int i = 0; i < expr->get_num_operands(); i++) { + assert(expr->operands[i]->type->is_scalar()); + + expr->operands[i]->accept(this); + op[i] = this->result; + } + + switch (expr->operation) { + case ir_unop_logic_not: + inst = emit(fs_inst(BRW_OPCODE_IF, temp, op[0], fs_reg(1))); + inst->conditional_mod = BRW_CONDITIONAL_Z; + return; + + case ir_binop_logic_xor: + inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_d, op[0], op[1])); + inst->conditional_mod = BRW_CONDITIONAL_NZ; + return; + + case ir_binop_logic_or: + temp = fs_reg(this, glsl_type::bool_type); + emit(fs_inst(BRW_OPCODE_OR, temp, op[0], op[1])); + inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_d, temp, fs_reg(0))); + inst->conditional_mod = BRW_CONDITIONAL_NZ; + return; + + case ir_binop_logic_and: + temp = fs_reg(this, glsl_type::bool_type); + emit(fs_inst(BRW_OPCODE_AND, temp, op[0], op[1])); + inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_d, temp, fs_reg(0))); + inst->conditional_mod = BRW_CONDITIONAL_NZ; + return; + + case ir_unop_f2b: + inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_f, op[0], fs_reg(0))); + inst->conditional_mod = BRW_CONDITIONAL_NZ; + return; + + case ir_unop_i2b: + inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_d, op[0], fs_reg(0))); + inst->conditional_mod = BRW_CONDITIONAL_NZ; + return; + + case ir_binop_greater: + inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_d, op[0], op[1])); + inst->conditional_mod = BRW_CONDITIONAL_G; + return; + case ir_binop_gequal: + inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_d, op[0], op[1])); + inst->conditional_mod = BRW_CONDITIONAL_GE; + return; + case ir_binop_less: + inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_d, op[0], op[1])); + inst->conditional_mod = BRW_CONDITIONAL_L; + return; + case ir_binop_lequal: + inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_d, op[0], op[1])); + inst->conditional_mod = BRW_CONDITIONAL_LE; + return; + case ir_binop_equal: + case ir_binop_all_equal: + inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_d, op[0], op[1])); + inst->conditional_mod = BRW_CONDITIONAL_Z; + return; + case ir_binop_nequal: + case ir_binop_any_nequal: + inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_d, op[0], op[1])); + inst->conditional_mod = BRW_CONDITIONAL_NZ; + return; + default: + assert(!"not reached"); + inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_d, op[0], fs_reg(0))); + inst->conditional_mod = BRW_CONDITIONAL_NZ; + this->fail = true; + return; + } + return; + } + + ir->condition->accept(this); + + fs_inst *inst = emit(fs_inst(BRW_OPCODE_IF, reg_null_d, this->result, fs_reg(0))); + inst->conditional_mod = BRW_CONDITIONAL_NZ; +} + void fs_visitor::visit(ir_if *ir) { @@ -1457,10 +1555,14 @@ fs_visitor::visit(ir_if *ir) */ this->base_ir = ir->condition; - emit_bool_to_cond_code(ir->condition); + if (intel->gen >= 6) { + emit_if_gen6(ir); + } else { + emit_bool_to_cond_code(ir->condition); - inst = emit(fs_inst(BRW_OPCODE_IF)); - inst->predicated = true; + inst = emit(fs_inst(BRW_OPCODE_IF)); + inst->predicated = true; + } foreach_iter(exec_list_iterator, iter, ir->then_instructions) { ir_instruction *ir = (ir_instruction *)iter.get(); @@ -3066,10 +3168,16 @@ fs_visitor::generate_code() case BRW_OPCODE_IF: assert(if_stack_depth < 16); - if_stack[if_stack_depth] = brw_IF(p, BRW_EXECUTE_8); + if (inst->src[0].file != BAD_FILE) { + assert(intel->gen >= 6); + if_stack[if_stack_depth] = brw_IF_gen6(p, inst->conditional_mod, src[0], src[1]); + } else { + if_stack[if_stack_depth] = brw_IF(p, BRW_EXECUTE_8); + } if_depth_in_loop[loop_stack_depth]++; if_stack_depth++; break; + case BRW_OPCODE_ELSE: if_stack[if_stack_depth - 1] = brw_ELSE(p, if_stack[if_stack_depth - 1]); diff --git a/src/mesa/drivers/dri/i965/brw_fs.h b/src/mesa/drivers/dri/i965/brw_fs.h index b7f4e15c76..b8126083f9 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.h +++ b/src/mesa/drivers/dri/i965/brw_fs.h @@ -390,6 +390,7 @@ public: fs_inst *emit_math(fs_opcodes op, fs_reg dst, fs_reg src0); fs_inst *emit_math(fs_opcodes op, fs_reg dst, fs_reg src0, fs_reg src1); void emit_bool_to_cond_code(ir_rvalue *condition); + void emit_if_gen6(ir_if *ir); void emit_fb_writes(); void emit_assignment_writes(fs_reg &l, fs_reg &r, |