diff options
| -rw-r--r-- | src/mesa/shader/slang/slang_codegen.c | 50 |
1 files changed, 49 insertions, 1 deletions
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c index cbe86fab3e9..f05c8eba25e 100644 --- a/src/mesa/shader/slang/slang_codegen.c +++ b/src/mesa/shader/slang/slang_codegen.c @@ -1631,6 +1631,54 @@ _slang_gen_select(slang_assemble_ctx *A, slang_operation *oper) } +static slang_ir_node * +_slang_gen_hl_select(slang_assemble_ctx *A, slang_operation *oper) +{ + slang_ir_node *cond, *ifNode, *trueExpr, *falseExpr, *trueNode, *falseNode; + slang_ir_node *tmpDecl, *tmpVar, *tree; + slang_typeinfo type; + int size; + + assert(oper->type == SLANG_OPER_SELECT); + assert(oper->num_children == 3); + + /* size of x or y's type */ + slang_typeinfo_construct(&type); + _slang_typeof_operation(A, &oper->children[1], &type); + size = _slang_sizeof_type_specifier(&type.spec); + assert(size > 0); + + /* temporary var */ + tmpDecl = _slang_gen_temporary(size); + + /* the condition (child 0) */ + cond = _slang_gen_operation(A, &oper->children[0]); + cond = new_cond(cond); + + /* if-true body (child 1) */ + tmpVar = new_node0(IR_VAR); + tmpVar->Store = tmpDecl->Store; + trueExpr = _slang_gen_operation(A, &oper->children[1]); + trueNode = new_node2(IR_MOVE, tmpVar, trueExpr); + + /* if-false body (child 2) */ + tmpVar = new_node0(IR_VAR); + tmpVar->Store = tmpDecl->Store; + falseExpr = _slang_gen_operation(A, &oper->children[2]); + falseNode = new_node2(IR_MOVE, tmpVar, falseExpr); + + ifNode = new_if(cond, trueNode, falseNode); + + /* tmp var value */ + tmpVar = new_node0(IR_VAR); + tmpVar->Store = tmpDecl->Store; + + tree = new_seq(ifNode, tmpVar); + tree = new_seq(tmpDecl, tree); + return tree; +} + + /** * Generate code for &&. */ @@ -2444,7 +2492,7 @@ _slang_gen_operation(slang_assemble_ctx * A, slang_operation *oper) { slang_ir_node *n; assert(oper->num_children == 3); - n = _slang_gen_select(A, oper); + n = _slang_gen_hl_select(A, oper); return n; } |