diff options
| -rw-r--r-- | src/mesa/shader/slang/slang_codegen.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c index 0339cac31d0..6aa18868c0b 100644 --- a/src/mesa/shader/slang/slang_codegen.c +++ b/src/mesa/shader/slang/slang_codegen.c @@ -1676,6 +1676,8 @@ _slang_gen_function_call(slang_assemble_ctx *A, slang_function *fun, n->Comment = _slang_strdup(s); } + A->UseReturnFlag = GL_FALSE; + return n; } @@ -4356,6 +4358,9 @@ root_swizzle(const slang_ir_storage *st) static slang_ir_node * _slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper) { + slang_operation *pred = NULL; + slang_ir_node *n = NULL; + if (oper->children[0].type == SLANG_OPER_IDENTIFIER) { /* Check that var is writeable */ slang_variable *var @@ -4376,6 +4381,17 @@ _slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper) (char *) oper->children[0].a_id); return NULL; } + + /* check if we need to predicate this assignment based on __returnFlag */ + if ((var->is_global || + var->type.qualifier == SLANG_QUAL_OUT || + var->type.qualifier == SLANG_QUAL_INOUT) && A->UseReturnFlag) { + /* create predicate, used below */ + pred = slang_operation_new(1); + pred->type = SLANG_OPER_IDENTIFIER; + pred->a_id = slang_atom_pool_atom(A->atoms, "__returnFlag"); + pred->locals->outer_scope = oper->locals->outer_scope; + } } if (oper->children[0].type == SLANG_OPER_IDENTIFIER && @@ -4387,14 +4403,12 @@ _slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper) * cases such as "v.x = f();" - would help with typical vertex * transformation. */ - slang_ir_node *n; n = _slang_gen_function_call_name(A, (const char *) oper->children[1].a_id, &oper->children[1], &oper->children[0]); - return n; } else { - slang_ir_node *n, *lhs, *rhs; + slang_ir_node *lhs, *rhs; /* lhs and rhs type checking */ if (!_slang_assignment_compatible(A, @@ -4434,12 +4448,21 @@ _slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper) rhs = _slang_gen_swizzle(rhs, newSwizzle); } n = new_node2(IR_COPY, lhs, rhs); - return n; } else { return NULL; } } + + if (n && pred) { + /* predicate the assignment code on __returnFlag */ + slang_ir_node *top, *cond; + + cond = _slang_gen_operation(A, pred); + top = new_if(cond, n, NULL); + return top; + } + return n; } @@ -5045,6 +5068,8 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var, const GLint totalSize = _slang_array_size(size, arrayLen); GLint texIndex = sampler_to_texture_index(var->type.specifier.type); + var->is_global = GL_TRUE; + /* check for sampler2D arrays */ if (texIndex == -1 && var->type.specifier._array) texIndex = sampler_to_texture_index(var->type.specifier._array->type); |