{
RefPtr<Literal> literal = new Literal;
if(var.type=="bool")
+ {
literal->token = (i->second ? "true" : "false");
+ literal->value = static_cast<bool>(i->second);
+ }
else if(var.type=="int")
+ {
literal->token = lexical_cast<string>(i->second);
+ literal->value = i->second;
+ }
var.init_expression = literal;
}
}
}
+TypeResolver::TypeResolver():
+ stage(0)
+{ }
+
+void TypeResolver::apply(Stage &s)
+{
+ stage = &s;
+ s.types.clear();
+ s.content.visit(*this);
+}
+
+TypeDeclaration *TypeResolver::resolve_type(const string &name)
+{
+ map<string, TypeDeclaration *>::iterator i = stage->types.find(name);
+ if(i!=stage->types.end())
+ {
+ map<TypeDeclaration *, TypeDeclaration *>::iterator j = alias_map.find(i->second);
+ return (j!=alias_map.end() ? j->second : i->second);
+ }
+ else
+ return 0;
+}
+
+void TypeResolver::visit(Block &block)
+{
+ for(NodeList<Statement>::iterator i=block.body.begin(); i!=block.body.end(); ++i)
+ {
+ if(!block.parent)
+ type_insert_point = i;
+ (*i)->visit(*this);
+ }
+}
+
+void TypeResolver::visit(BasicTypeDeclaration &type)
+{
+ type.base_type = resolve_type(type.base);
+
+ if(type.kind==BasicTypeDeclaration::VECTOR && type.base_type)
+ if(BasicTypeDeclaration *basic_base = dynamic_cast<BasicTypeDeclaration *>(type.base_type))
+ if(basic_base->kind==BasicTypeDeclaration::VECTOR)
+ {
+ type.kind = BasicTypeDeclaration::MATRIX;
+ type.size |= basic_base->size<<16;
+ }
+
+ if(type.kind==BasicTypeDeclaration::ALIAS && type.base_type)
+ alias_map[&type] = type.base_type;
+ else if(type.kind==BasicTypeDeclaration::ARRAY && type.base_type)
+ array_types[type.base_type] = &type;
+
+ stage->types.insert(make_pair(type.name, &type));
+}
+
+void TypeResolver::visit(ImageTypeDeclaration &type)
+{
+ type.base_type = resolve_type(type.base);
+ stage->types.insert(make_pair(type.name, &type));
+}
+
+void TypeResolver::visit(StructDeclaration &strct)
+{
+ stage->types.insert(make_pair(strct.name, &strct));
+ TraversingVisitor::visit(strct);
+}
+
+void TypeResolver::visit(VariableDeclaration &var)
+{
+ TypeDeclaration *type = resolve_type(var.type);
+ if(var.array && type)
+ {
+ map<TypeDeclaration *, TypeDeclaration *>::iterator i = array_types.find(type);
+ if(i==array_types.end())
+ {
+ BasicTypeDeclaration *array = new BasicTypeDeclaration;
+ array->source = BUILTIN_SOURCE;
+ array->name = type->name+"[]";
+ array->kind = BasicTypeDeclaration::ARRAY;
+ array->base = type->name;
+ array->base_type = type;
+ stage->content.body.insert(type_insert_point, array);
+ array->visit(*this);
+ type = array;
+ }
+ else
+ type = i->second;
+ }
+ var.type_declaration = type;
+}
+
+void TypeResolver::visit(FunctionDeclaration &func)
+{
+ func.return_type_declaration = resolve_type(func.return_type);
+ TraversingVisitor::visit(func);
+}
+
+
VariableResolver::VariableResolver():
stage(0),
- members(0),
+ r_members(0),
record_target(false),
- assignment_target(0),
- self_referencing(false)
+ r_self_referencing(false),
+ r_assignment_target(0)
{ }
void VariableResolver::apply(Stage &s)
{
stage = &s;
- s.types.clear();
s.interface_blocks.clear();
s.content.visit(*this);
}
void VariableResolver::visit(VariableReference &var)
{
var.declaration = 0;
- members = 0;
+ r_members = 0;
+ /* Look for variable declarations in the block hierarchy first. Interface
+ blocks are always defined in the top level so we can't accidentally skip
+ one. */
for(Block *block=current_block; (!var.declaration && block); block=block->parent)
{
map<string, VariableDeclaration *>::iterator i = block->variables.find(var.name);
var.declaration = i->second;
}
- if(var.declaration)
- {
- if(var.declaration->type_declaration)
- members = &var.declaration->type_declaration->members.variables;
- }
- else
+ if(!var.declaration)
{
const map<string, InterfaceBlock *> &blocks = stage->interface_blocks;
- map<string, InterfaceBlock *>::const_iterator i = blocks.find(var.name);
- if(i!=blocks.end() && i->second->instance_name==var.name)
+ map<string, InterfaceBlock *>::const_iterator i = blocks.find("_"+var.name);
+ if(i!=blocks.end())
{
- iface_ref = new InterfaceBlockReference;
- iface_ref->name = var.name;
- iface_ref->declaration = i->second;
- members = &i->second->members.variables;
+ /* The name refers to an interface block with an instance name rather
+ than a variable. Prepare a new syntax tree node accordingly. */
+ r_iface_ref = new InterfaceBlockReference;
+ r_iface_ref->source = var.source;
+ r_iface_ref->line = var.line;
+ r_iface_ref->name = var.name;
+ r_iface_ref->declaration = i->second;
+ r_members = &i->second->members.variables;
}
else
{
+ // Look for the variable in anonymous interface blocks.
for(i=blocks.begin(); (!var.declaration && i!=blocks.end()); ++i)
if(i->second->instance_name.empty())
{
}
}
+ if(var.declaration)
+ if(StructDeclaration *strct = dynamic_cast<StructDeclaration *>(var.declaration->type_declaration))
+ r_members = &strct->members.variables;
+
if(record_target)
{
- if(assignment_target)
+ if(r_assignment_target)
{
+ /* More than one variable reference found in assignment target.
+ Unable to determine what the primary target is. */
record_target = false;
- assignment_target = 0;
+ r_assignment_target = 0;
}
else
- assignment_target = var.declaration;
+ r_assignment_target = var.declaration;
}
- else if(var.declaration && var.declaration==assignment_target)
- self_referencing = true;
+ else if(var.declaration && var.declaration==r_assignment_target)
+ r_self_referencing = true;
}
void VariableResolver::visit(InterfaceBlockReference &iface)
iface.declaration = 0;
for(Block *block=current_block; block; block=block->parent)
{
- map<string, InterfaceBlock *>::iterator i = stage->interface_blocks.find(iface.name);
+ map<string, InterfaceBlock *>::iterator i = stage->interface_blocks.find("_"+iface.name);
if(i!=stage->interface_blocks.end())
{
iface.declaration = i->second;
- members = &i->second->members.variables;
+ r_members = &i->second->members.variables;
break;
}
}
void VariableResolver::visit(MemberAccess &memacc)
{
- members = 0;
- iface_ref = 0;
+ r_members = 0;
+ r_iface_ref = 0;
memacc.left->visit(*this);
- if(iface_ref)
- memacc.left = iface_ref;
- iface_ref = 0;
+ if(r_iface_ref)
+ memacc.left = r_iface_ref;
+ r_iface_ref = 0;
memacc.declaration = 0;
- if(members)
+ if(r_members)
{
- map<string, VariableDeclaration *>::iterator i = members->find(memacc.member);
- if(i!=members->end())
+ map<string, VariableDeclaration *>::iterator i = r_members->find(memacc.member);
+ if(i!=r_members->end())
{
memacc.declaration = i->second;
- if(i->second->type_declaration)
- members = &i->second->type_declaration->members.variables;
+ if(StructDeclaration *strct = dynamic_cast<StructDeclaration *>(i->second->type_declaration))
+ r_members = &strct->members.variables;
}
else
- members = 0;
+ r_members = 0;
}
}
+void VariableResolver::visit(UnaryExpression &unary)
+{
+ TraversingVisitor::visit(unary);
+ r_members = 0;
+ r_iface_ref = 0;
+}
+
void VariableResolver::visit(BinaryExpression &binary)
{
- if(binary.oper=="[")
+ if(binary.oper->token[0]=='[')
{
{
- SetForScope<bool> set(record_target, false);
+ /* The subscript expression is not a part of the primary assignment
+ target. */
+ SetFlag set(record_target, false);
binary.right->visit(*this);
}
- members = 0;
- iface_ref = 0;
+ r_members = 0;
+ r_iface_ref = 0;
binary.left->visit(*this);
- if(iface_ref)
- binary.left = iface_ref;
- iface_ref = 0;
+ if(r_iface_ref)
+ binary.left = r_iface_ref;
}
else
{
TraversingVisitor::visit(binary);
- members = 0;
+ r_members = 0;
}
+
+ r_iface_ref = 0;
}
void VariableResolver::visit(Assignment &assign)
{
{
SetFlag set(record_target);
- assignment_target = 0;
+ r_assignment_target = 0;
assign.left->visit(*this);
+ assign.target_declaration = r_assignment_target;
}
- self_referencing = false;
+ r_self_referencing = false;
assign.right->visit(*this);
+ assign.self_referencing = (r_self_referencing || assign.oper->token[0]!='=');
- assign.self_referencing = (self_referencing || assign.oper!="=");
- assign.target_declaration = assignment_target;
+ r_members = 0;
+ r_iface_ref = 0;
}
-void VariableResolver::visit(StructDeclaration &strct)
+void VariableResolver::visit(FunctionCall &call)
{
- TraversingVisitor::visit(strct);
- stage->types[strct.name] = &strct;
+ TraversingVisitor::visit(call);
+ r_members = 0;
+ r_iface_ref = 0;
}
void VariableResolver::visit(VariableDeclaration &var)
{
- map<string, StructDeclaration *>::iterator i = stage->types.find(var.type);
- if(i!=stage->types.end())
- var.type_declaration = i->second;
-
if(!block_interface.empty() && var.interface.empty())
var.interface = block_interface;
TraversingVisitor::visit(var);
- current_block->variables[var.name] = &var;
+ current_block->variables.insert(make_pair(var.name, &var));
}
void VariableResolver::visit(InterfaceBlock &iface)
{
- /* Block names can't be used for any other identifiers so we can put them
- in the same map with instance names. */
- stage->interface_blocks[iface.name] = &iface;
+ /* Block names can be reused in different interfaces. Prefix the name with
+ the first character of the interface to avoid conflicts. */
+ stage->interface_blocks.insert(make_pair(iface.interface+iface.name, &iface));
if(!iface.instance_name.empty())
- stage->interface_blocks[iface.instance_name] = &iface;
+ stage->interface_blocks.insert(make_pair("_"+iface.instance_name, &iface));
SetForScope<string> set_iface(block_interface, iface.interface);
TraversingVisitor::visit(iface);
{
stage_decl = &func;
+ // Set all previous declarations to use this definition.
for(vector<FunctionDeclaration *>::iterator i=decls.begin(); i!=decls.end(); ++i)
{
(*i)->definition = func.definition;
}
else
{
+ func.definition = 0;
if(!stage_decl)
stage_decl = &func;
-
- func.definition = stage_decl->definition;
+ else
+ func.definition = stage_decl->definition;
}
decls.push_back(&func);
return prefix+name.substr(offset);
}
-bool InterfaceGenerator::generate_interface(VariableDeclaration &var, const string &iface, const string &name)
+VariableDeclaration *InterfaceGenerator::generate_interface(VariableDeclaration &var, const string &iface, const string &name)
{
if(stage->content.variables.count(name))
- return false;
+ return 0;
VariableDeclaration* iface_var = new VariableDeclaration;
iface_var->sampling = var.sampling;
iface_var->interface = iface;
iface_var->type = var.type;
- iface_var->type_declaration = var.type_declaration;
iface_var->name = name;
+ /* Geometry shader inputs are always arrays. But if we're bringing in an
+ entire block, the array is on the block and not individual variables. */
if(stage->type==Stage::GEOMETRY && !copy_block)
iface_var->array = ((var.array && var.interface!="in") || iface=="in");
else
}
iface_target_block->body.insert(iface_insert_point, iface_var);
- iface_target_block->variables[name] = iface_var;
+ iface_target_block->variables.insert(make_pair(name, iface_var));
- return true;
+ return iface_var;
}
-bool InterfaceGenerator::generate_interface(InterfaceBlock &out_block)
+InterfaceBlock *InterfaceGenerator::generate_interface(InterfaceBlock &out_block)
{
- if(stage->interface_blocks.count(out_block.name))
- return false;
+ if(stage->interface_blocks.count("in"+out_block.name))
+ return 0;
InterfaceBlock *in_block = new InterfaceBlock;
in_block->interface = "in";
}
iface_target_block->body.insert(iface_insert_point, in_block);
- stage->interface_blocks[in_block->name] = in_block;
+ stage->interface_blocks.insert(make_pair("in"+in_block->name, in_block));
if(!in_block->instance_name.empty())
- stage->interface_blocks[in_block->instance_name] = in_block;
+ stage->interface_blocks.insert(make_pair("_"+in_block->instance_name, in_block));
SetFlag set_scope(function_scope, false);
SetForScope<Block *> set_block(current_block, &stage->content);
in_block->visit(*this);
- return true;
+ return in_block;
}
ExpressionStatement &InterfaceGenerator::insert_assignment(const string &left, Expression *right)
VariableReference *ref = new VariableReference;
ref->name = left;
assign->left = ref;
- assign->oper = "=";
+ assign->oper = &Operator::get_operator("=", Operator::BINARY);
assign->right = right;
ExpressionStatement *stmt = new ExpressionStatement;
{
if(var.declaration || !stage->previous)
return;
- /* Don't pull a variable from previous stage if we just generated an out
+ /* Don't pull a variable from previous stage if we just generated an output
interface in this stage */
if(stage->content.variables.count(var.name))
return;
}
const map<string, InterfaceBlock *> &prev_blocks = stage->previous->interface_blocks;
- map<string, InterfaceBlock *>::const_iterator j = prev_blocks.find(var.name);
- if(j!=prev_blocks.end() && j->second->interface=="out" && j->second->instance_name==var.name)
+ map<string, InterfaceBlock *>::const_iterator j = prev_blocks.find("_"+var.name);
+ if(j!=prev_blocks.end() && j->second->interface=="out")
{
generate_interface(*j->second);
+ /* Let VariableResolver convert the variable reference into an interface
+ block reference. */
return;
}
{
if(iface_block->linked_block)
{
+ // Link all variables to their counterparts in the linked block.
const map<string, VariableDeclaration *> &linked_vars = iface_block->linked_block->members.variables;
map<string, VariableDeclaration *>::const_iterator i = linked_vars.find(var.name);
if(i!=linked_vars.end())
+ {
var.linked_declaration = i->second;
+ var.linked_declaration->linked_declaration = &var;
+ }
}
return;
}
if(var.interface=="out")
{
- /* For out variables in function scope, generate a global interface and
- replace the local declaration with an assignment. */
- if(function_scope && generate_interface(var, "out", var.name))
+ /* For output variables in function scope, generate a global interface
+ and replace the local declaration with an assignment. */
+ VariableDeclaration *out_var = 0;
+ if(function_scope && (out_var=generate_interface(var, "out", var.name)))
{
+ out_var->source = var.source;
+ out_var->line = var.line;
nodes_to_remove.insert(&var);
if(var.init_expression)
{
}
else if(var.interface=="in")
{
- /* Try to link in variables in global scope with out variables from
- previous stage */
+ /* Try to link input variables in global scope with output variables from
+ previous stage. */
if(current_block==&stage->content && !var.linked_declaration && stage->previous)
{
const map<string, VariableDeclaration *> &prev_vars = stage->previous->content.variables;
{
if(iface.interface=="in")
{
+ /* Try to link input blocks with output blocks sharing the same block
+ name from previous stage. */
if(!iface.linked_block && stage->previous)
{
const map<string, InterfaceBlock *> &prev_blocks = stage->previous->interface_blocks;
- map<string, InterfaceBlock *>::const_iterator i = prev_blocks.find(iface.name);
- if(i!=prev_blocks.end() && i->second->interface=="out" && i->second->name==iface.name)
+ map<string, InterfaceBlock *>::const_iterator i = prev_blocks.find("out"+iface.name);
+ if(i!=prev_blocks.end())
{
iface.linked_block = i->second;
i->second->linked_block = &iface;
{
vector<VariableDeclaration *> pass_vars;
+ // Pass through all input variables of this stage.
for(map<string, VariableDeclaration *>::const_iterator i=stage->content.variables.begin(); i!=stage->content.variables.end(); ++i)
if(i->second->interface=="in")
pass_vars.push_back(i->second);
const map<string, VariableDeclaration *> &prev_vars = stage->previous->content.variables;
for(map<string, VariableDeclaration *>::const_iterator i=prev_vars.begin(); i!=prev_vars.end(); ++i)
{
- bool linked = false;
- for(vector<VariableDeclaration *>::const_iterator j=pass_vars.begin(); (!linked && j!=pass_vars.end()); ++j)
- linked = ((*j)->linked_declaration==i->second);
+ if(i->second->interface!="out")
+ continue;
- if(!linked && generate_interface(*i->second, "in", i->second->name))
+ /* Pass through output variables from the previous stage, but only
+ those which are not already linked to an input here. */
+ if(!i->second->linked_declaration && generate_interface(*i->second, "in", i->second->name))
pass_vars.push_back(i->second);
}
}
if(stage->type==Stage::GEOMETRY)
{
+ /* Special case for geometry shader: copy gl_Position from input to
+ output. */
InterfaceBlockReference *ref = new InterfaceBlockReference;
ref->name = "gl_in";
BinaryExpression *subscript = new BinaryExpression;
subscript->left = ref;
- subscript->oper = "[";
+ subscript->oper = &Operator::get_operator("[", Operator::BINARY);
subscript->right = pass.subscript;
- subscript->after = "]";
MemberAccess *memacc = new MemberAccess;
memacc->left = subscript;
{
BinaryExpression *subscript = new BinaryExpression;
subscript->left = ref;
- subscript->oper = "[";
+ subscript->oper = &Operator::get_operator("[", Operator::BINARY);
subscript->right = pass.subscript;
- subscript->after = "]";
insert_assignment(out_name, subscript);
}
else
nodes_to_remove.insert(&pass);
}
-
-DeclarationReorderer::DeclarationReorderer():
- kind(NO_DECLARATION)
-{ }
-
-void DeclarationReorderer::visit(FunctionCall &call)
-{
- FunctionDeclaration *def = call.declaration;
- if(def)
- def = def->definition;
- if(def && !ordered_funcs.count(def))
- needed_funcs.insert(def);
-}
-
-void DeclarationReorderer::visit(Block &block)
-{
- if(block.parent)
- return TraversingVisitor::visit(block);
-
- NodeList<Statement>::iterator struct_insert_point = block.body.end();
- NodeList<Statement>::iterator variable_insert_point = block.body.end();
- NodeList<Statement>::iterator function_insert_point = block.body.end();
- unsigned unordered_func_count = 0;
- bool ordered_any_funcs = false;
-
- for(NodeList<Statement>::iterator i=block.body.begin(); i!=block.body.end(); )
- {
- kind = NO_DECLARATION;
- (*i)->visit(*this);
-
- bool moved = false;
- if(kind==STRUCT && struct_insert_point!=block.body.end())
- {
- block.body.insert(struct_insert_point, *i);
- moved = true;
- }
- else if(kind>STRUCT && struct_insert_point==block.body.end())
- struct_insert_point = i;
-
- if(kind==VARIABLE && variable_insert_point!=block.body.end())
- {
- block.body.insert(variable_insert_point, *i);
- moved = true;
- }
- else if(kind>VARIABLE && variable_insert_point==block.body.end())
- variable_insert_point = i;
-
- if(kind==FUNCTION)
- {
- if(function_insert_point==block.body.end())
- function_insert_point = i;
-
- if(needed_funcs.empty())
- {
- ordered_funcs.insert(i->get());
- if(i!=function_insert_point)
- {
- block.body.insert(function_insert_point, *i);
- moved = true;
- }
- else
- ++function_insert_point;
- ordered_any_funcs = true;
- }
- else
- ++unordered_func_count;
- }
-
- if(moved)
- {
- if(function_insert_point==i)
- ++function_insert_point;
- block.body.erase(i++);
- }
- else
- ++i;
-
- if(i==block.body.end() && unordered_func_count)
- {
- if(!ordered_any_funcs)
- // A subset of the remaining functions forms a recursive loop
- /* TODO pick a function and move it up, adding any necessary
- declarations */
- break;
-
- i = function_insert_point;
- unordered_func_count = 0;
- }
- }
-}
-
-void DeclarationReorderer::visit(VariableDeclaration &var)
-{
- TraversingVisitor::visit(var);
- kind = VARIABLE;
-}
-
-void DeclarationReorderer::visit(FunctionDeclaration &func)
-{
- needed_funcs.clear();
- func.body.visit(*this);
- needed_funcs.erase(&func);
- kind = FUNCTION;
-}
-
} // namespace SL
} // namespace GL
} // namespace Msp
projects / libs / gl.git / blobdiff