+#include <msp/core/hash.h>
#include <msp/core/raii.h>
-#include "builtin.h"
#include "generate.h"
using namespace std;
namespace GL {
namespace SL {
-void DeclarationCombiner::apply(Stage &stage)
+void ConstantIdAssigner::apply(Module &module, const Features &features)
{
- visit(stage.content);
- NodeRemover().apply(stage, nodes_to_remove);
-}
-
-void DeclarationCombiner::visit(Block &block)
-{
- if(current_block)
- return;
+ for(list<Stage>::iterator i=module.stages.begin(); i!=module.stages.end(); ++i)
+ i->content.visit(*this);
- TraversingVisitor::visit(block);
-}
-
-void DeclarationCombiner::visit(FunctionDeclaration &func)
-{
- vector<FunctionDeclaration *> &decls = functions[func.name];
- if(func.definition)
+ unsigned max_id = features.max_constant_id;
+ for(vector<VariableDeclaration *>::iterator i=auto_constants.begin(); i!=auto_constants.end(); ++i)
{
- for(vector<FunctionDeclaration *>::iterator i=decls.begin(); i!=decls.end(); ++i)
- {
- (*i)->definition = func.definition;
- (*i)->body.body.clear();
- }
- }
- decls.push_back(&func);
-}
+ unsigned id = hash32((*i)->name)%(max_id+1);
+ while(used_ids.count(id))
+ ++id;
-void DeclarationCombiner::visit(VariableDeclaration &var)
-{
- VariableDeclaration *&ptr = variables[var.name];
- if(ptr)
- {
- ptr->type = var.type;
- if(var.init_expression)
- ptr->init_expression = var.init_expression;
- if(var.layout)
- {
- if(ptr->layout)
+ vector<Layout::Qualifier> &qualifiers = (*i)->layout->qualifiers;
+ for(vector<Layout::Qualifier>::iterator j=qualifiers.begin(); j!=qualifiers.end(); ++j)
+ if(j->name=="constant_id")
{
- for(vector<Layout::Qualifier>::iterator i=var.layout->qualifiers.begin(); i!=var.layout->qualifiers.end(); ++i)
- {
- bool found = false;
- for(vector<Layout::Qualifier>::iterator j=ptr->layout->qualifiers.begin(); (!found && j!=ptr->layout->qualifiers.end()); ++j)
- if(j->name==i->name)
- {
- j->has_value = i->value;
- j->value = i->value;
- found = true;
- }
-
- if(!found)
- ptr->layout->qualifiers.push_back(*i);
- }
+ j->value = id;
+ break;
}
- else
- ptr->layout = var.layout;
- }
- nodes_to_remove.insert(&var);
- }
- else
- ptr = &var;
-}
-
-
-void BlockResolver::visit(Block &block)
-{
- block.parent = current_block;
- TraversingVisitor::visit(block);
-}
-
-void BlockResolver::visit(InterfaceBlock &iface)
-{
- iface.members.anonymous = true;
- TraversingVisitor::visit(iface);
-}
-
-
-VariableResolver::VariableResolver():
- record_target(false),
- assignment_target(0),
- self_referencing(false)
-{ }
-
-void VariableResolver::apply(Stage &stage)
-{
- Stage *builtin_stage = get_builtins(stage.type);
- builtins = (builtin_stage ? &builtin_stage->content : 0);
- visit(stage.content);
-}
-
-Block *VariableResolver::next_block(Block &block)
-{
- return block.parent ? block.parent : &block!=builtins ? builtins : 0;
-}
-
-void VariableResolver::visit(Block &block)
-{
- if(current_block!=&block)
- block.variables.clear();
-
- TraversingVisitor::visit(block);
-}
-
-void VariableResolver::visit(VariableReference &var)
-{
- var.declaration = 0;
- type = 0;
- for(Block *block=current_block; block; block=next_block(*block))
- {
- map<string, VariableDeclaration *>::iterator j = block->variables.find(var.name);
- if(j!=block->variables.end())
- {
- var.declaration = j->second;
- type = j->second->type_declaration;
- break;
- }
- }
-
- if(record_target)
- {
- if(assignment_target)
- {
- record_target = false;
- assignment_target = 0;
- }
- else
- assignment_target = var.declaration;
- }
- else if(var.declaration && var.declaration==assignment_target)
- self_referencing = true;
-}
-void VariableResolver::visit(MemberAccess &memacc)
-{
- type = 0;
- TraversingVisitor::visit(memacc);
- memacc.declaration = 0;
- if(type)
- {
- map<string, VariableDeclaration *>::iterator i = type->members.variables.find(memacc.member);
- if(i!=type->members.variables.end())
- {
- memacc.declaration = i->second;
- type = i->second->type_declaration;
- }
- else
- type = 0;
+ used_ids.insert(id);
}
}
-void VariableResolver::visit(BinaryExpression &binary)
-{
- if(binary.oper=="[")
- {
- {
- SetForScope<bool> set(record_target, false);
- binary.right->visit(*this);
- }
- type = 0;
- binary.left->visit(*this);
- }
- else
- {
- TraversingVisitor::visit(binary);
- type = 0;
- }
-}
-
-void VariableResolver::visit(Assignment &assign)
-{
- {
- SetFlag set(record_target);
- assignment_target = 0;
- assign.left->visit(*this);
- }
-
- self_referencing = false;
- assign.right->visit(*this);
-
- assign.self_referencing = (self_referencing || assign.oper!="=");
- assign.target_declaration = assignment_target;
-}
-
-void VariableResolver::visit(StructDeclaration &strct)
+void ConstantIdAssigner::visit(VariableDeclaration &var)
{
- TraversingVisitor::visit(strct);
- current_block->types[strct.name] = &strct;
-}
-
-void VariableResolver::visit(VariableDeclaration &var)
-{
- for(Block *block=current_block; block; block=next_block(*block))
+ if(var.layout)
{
- map<string, StructDeclaration *>::iterator j = block->types.find(var.type);
- if(j!=block->types.end())
- var.type_declaration = j->second;
- }
-
- if(!block_interface.empty() && var.interface.empty())
- var.interface = block_interface;
-
- TraversingVisitor::visit(var);
- current_block->variables[var.name] = &var;
- if(current_block->anonymous && current_block->parent)
- current_block->parent->variables[var.name] = &var;
-}
-
-void VariableResolver::visit(InterfaceBlock &iface)
-{
- SetForScope<string> set_iface(block_interface, iface.interface);
- TraversingVisitor::visit(iface);
-}
-
-void VariableResolver::visit(FunctionDeclaration &func)
-{
- SetForScope<Block *> set_block(current_block, &func.body);
- func.body.variables.clear();
- TraversingVisitor::visit(func);
-}
-
-void VariableResolver::visit(Iteration &iter)
-{
- SetForScope<Block *> set_block(current_block, &iter.body);
- iter.body.variables.clear();
- TraversingVisitor::visit(iter);
-}
-
-
-void FunctionResolver::visit(FunctionCall &call)
-{
- map<string, vector<FunctionDeclaration *> >::iterator i = functions.find(call.name);
- if(i!=functions.end())
- call.declaration = i->second.back();
-
- TraversingVisitor::visit(call);
-}
-
-void FunctionResolver::visit(FunctionDeclaration &func)
-{
- vector<FunctionDeclaration *> &decls = functions[func.name];
- if(func.definition)
- {
- for(vector<FunctionDeclaration *>::iterator i=decls.begin(); i!=decls.end(); ++i)
- (*i)->definition = func.definition;
- decls.clear();
- decls.push_back(&func);
+ vector<Layout::Qualifier> &qualifiers = var.layout->qualifiers;
+ for(vector<Layout::Qualifier>::iterator i=qualifiers.begin(); i!=qualifiers.end(); ++i)
+ if(i->name=="constant_id" && i->has_value)
+ {
+ if(i->value==-1)
+ auto_constants.push_back(&var);
+ else
+ used_ids.insert(i->value);
+ break;
+ }
}
- else if(!decls.empty() && decls.back()->definition)
- func.definition = decls.back()->definition;
- else
- decls.push_back(&func);
-
- TraversingVisitor::visit(func);
}
InterfaceGenerator::InterfaceGenerator():
- stage(0)
+ stage(0),
+ function_scope(false),
+ copy_block(false),
+ iface_target_block(0)
{ }
string InterfaceGenerator::get_out_prefix(Stage::Type type)
void InterfaceGenerator::apply(Stage &s)
{
stage = &s;
+ iface_target_block = &stage->content;
if(stage->previous)
in_prefix = get_out_prefix(stage->previous->type);
out_prefix = get_out_prefix(stage->type);
- visit(s.content);
+ s.content.visit(*this);
NodeRemover().apply(s, nodes_to_remove);
}
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)
{
- const map<string, VariableDeclaration *> &stage_vars = (iface=="in" ? stage->in_variables : stage->out_variables);
- if(stage_vars.count(name))
- return false;
+ if(stage->content.variables.count(name))
+ return 0;
+
+ if(stage->type==Stage::GEOMETRY && !copy_block && var.interface=="out" && var.array)
+ 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;
- if(stage->type==Stage::GEOMETRY)
+ /* 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_var->array = var.array;
if(iface_var->array)
iface_var->array_size = var.array_size;
if(iface=="in")
+ {
+ iface_var->layout = var.layout;
iface_var->linked_declaration = &var;
- stage->content.body.insert(iface_insert_point, iface_var);
+ var.linked_declaration = iface_var;
+ }
+
+ iface_target_block->body.insert(iface_insert_point, iface_var);
+ iface_target_block->variables.insert(make_pair(name, iface_var));
+ if(iface_target_block==&stage->content && iface=="in")
+ declared_inputs.push_back(iface_var);
+
+ return iface_var;
+}
+
+InterfaceBlock *InterfaceGenerator::generate_interface(InterfaceBlock &out_block)
+{
+ if(stage->interface_blocks.count("in"+out_block.block_name))
+ return 0;
+
+ InterfaceBlock *in_block = new InterfaceBlock;
+ in_block->interface = "in";
+ in_block->block_name = out_block.block_name;
+ in_block->members = new Block;
+ in_block->instance_name = out_block.instance_name;
+ if(stage->type==Stage::GEOMETRY)
+ in_block->array = true;
+ else
+ in_block->array = out_block.array;
+ in_block->linked_block = &out_block;
+ out_block.linked_block = in_block;
+
{
- SetForScope<Block *> set_block(current_block, &stage->content);
- iface_var->visit(*this);
+ SetFlag set_copy(copy_block, true);
+ SetForScope<Block *> set_target(iface_target_block, in_block->members.get());
+ SetForScope<NodeList<Statement>::iterator> set_ins_pt(iface_insert_point, in_block->members->body.end());
+ if(out_block.struct_declaration)
+ out_block.struct_declaration->members.visit(*this);
+ else if(out_block.members)
+ out_block.members->visit(*this);
}
- return true;
+ iface_target_block->body.insert(iface_insert_point, in_block);
+ stage->interface_blocks.insert(make_pair("in"+in_block->block_name, in_block));
+ if(!in_block->instance_name.empty())
+ 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 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 output
+ interface in this stage */
+ if(stage->content.variables.count(var.name))
+ return;
+
+ const map<string, VariableDeclaration *> &prev_vars = stage->previous->content.variables;
+ map<string, VariableDeclaration *>::const_iterator i = prev_vars.find(var.name);
+ if(i==prev_vars.end() || i->second->interface!="out")
+ i = prev_vars.find(in_prefix+var.name);
+ if(i!=prev_vars.end() && i->second->interface=="out")
+ {
+ if(stage->type==Stage::GEOMETRY && i->second->array)
+ stage->diagnostics.push_back(Diagnostic(Diagnostic::WARN, var.source, var.line,
+ format("Can't access '%s' through automatic interface because it's an array", var.name)));
+ else
+ {
+ generate_interface(*i->second, "in", i->second->name);
+ var.name = i->second->name;
+ }
+ return;
+ }
- const map<string, VariableDeclaration *> &prev_out = stage->previous->out_variables;
- map<string, VariableDeclaration *>::const_iterator i = prev_out.find(var.name);
- if(i==prev_out.end())
- i = prev_out.find(in_prefix+var.name);
- if(i!=prev_out.end())
+ 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")
{
- generate_interface(*i->second, "in", i->second->name);
- var.name = i->second->name;
+ generate_interface(*j->second);
+ /* Let VariableResolver convert the variable reference into an interface
+ block reference. */
+ return;
}
+
+ for(j=prev_blocks.begin(); j!=prev_blocks.end(); ++j)
+ if(j->second->instance_name.empty() && j->second->struct_declaration)
+ {
+ const map<string, VariableDeclaration *> &iface_vars = j->second->struct_declaration->members.variables;
+ i = iface_vars.find(var.name);
+ if(i!=iface_vars.end())
+ {
+ generate_interface(*j->second);
+ return;
+ }
+ }
}
void InterfaceGenerator::visit(VariableDeclaration &var)
{
- if(var.interface=="out")
+ if(copy_block)
+ generate_interface(var, "in", var.name);
+ else if(var.interface=="out")
{
- if(current_block==&stage->content)
- stage->out_variables[var.name] = &var;
- else if(generate_interface(var, "out", change_prefix(var.name, string())))
+ /* 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")
+ else if(var.interface=="in" && current_block==&stage->content)
{
- stage->in_variables[var.name] = &var;
- if(var.linked_declaration)
- var.linked_declaration->linked_declaration = &var;
- else if(stage->previous)
+ if(var.name.compare(0, 3, "gl_"))
+ declared_inputs.push_back(&var);
+
+ /* Try to link input variables in global scope with output variables from
+ previous stage. */
+ if(!var.linked_declaration && stage->previous)
{
- const map<string, VariableDeclaration *> &prev_out = stage->previous->out_variables;
- map<string, VariableDeclaration *>::const_iterator i = prev_out.find(var.name);
- if(i!=prev_out.end())
+ const map<string, VariableDeclaration *> &prev_vars = stage->previous->content.variables;
+ map<string, VariableDeclaration *>::const_iterator i = prev_vars.find(var.name);
+ if(i!=prev_vars.end() && i->second->interface=="out")
{
var.linked_declaration = i->second;
i->second->linked_declaration = &var;
TraversingVisitor::visit(var);
}
-void InterfaceGenerator::visit(Passthrough &pass)
+void InterfaceGenerator::visit(InterfaceBlock &iface)
{
- vector<VariableDeclaration *> pass_vars;
+ 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("out"+iface.block_name);
+ if(i!=prev_blocks.end())
+ {
+ iface.linked_block = i->second;
+ i->second->linked_block = &iface;
+ }
+ }
+ }
- for(map<string, VariableDeclaration *>::const_iterator i=stage->in_variables.begin(); i!=stage->in_variables.end(); ++i)
- pass_vars.push_back(i->second);
+ TraversingVisitor::visit(iface);
+}
+
+void InterfaceGenerator::visit(FunctionDeclaration &func)
+{
+ SetFlag set_scope(function_scope, true);
+ // Skip parameters because they're not useful here
+ func.body.visit(*this);
+}
+
+void InterfaceGenerator::visit(Passthrough &pass)
+{
+ // Pass through all input variables declared so far.
+ vector<VariableDeclaration *> pass_vars = declared_inputs;
if(stage->previous)
{
- const map<string, VariableDeclaration *> &prev_out = stage->previous->out_variables;
- for(map<string, VariableDeclaration *>::const_iterator i=prev_out.begin(); i!=prev_out.end(); ++i)
+ 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)
{
- VariableReference *ref = new VariableReference;
+ /* 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