+#include <msp/core/algorithm.h>
+#include <msp/core/hash.h>
#include <msp/core/raii.h>
-#include "builtin.h"
#include "generate.h"
using namespace std;
namespace GL {
namespace SL {
-DeclarationCombiner::DeclarationCombiner():
- toplevel(true)
-{ }
-
-void DeclarationCombiner::visit(Block &block)
+void ConstantIdAssigner::apply(Module &module, const Features &features)
{
- if(!toplevel)
- return;
-
- SetForScope<bool> set(toplevel, false);
- BlockModifier::visit(block);
-}
+ for(Stage &s: module.stages)
+ s.content.visit(*this);
-void DeclarationCombiner::visit(FunctionDeclaration &func)
-{
- vector<FunctionDeclaration *> &decls = functions[func.name];
- if(func.definition)
+ for(VariableDeclaration *v: auto_constants)
{
- 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(v->name)%features.constant_id_range;
+ while(used_ids.count(id))
+ id = (id+1)%features.constant_id_range;
-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)
- {
- 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->identifier==i->identifier)
- {
- j->value = i->value;
- found = true;
- }
-
- if(!found)
- ptr->layout->qualifiers.push_back(*i);
- }
- }
- else
- ptr->layout = var.layout;
- }
- remove_node = true;
- }
- else
- ptr = &var;
-}
-
-
-VariableResolver::VariableResolver():
- anonymous(false),
- record_target(false),
- assignment_target(0),
- self_referencing(false)
-{ }
+ auto i = find_member(v->layout->qualifiers, string("constant_id"), &Layout::Qualifier::name);
+ if(i!=v->layout->qualifiers.end())
+ i->value = id;
-void VariableResolver::apply(Stage &stage)
-{
- Stage *builtins = get_builtins(stage.type);
- if(builtins)
- blocks.push_back(&builtins->content);
- visit(stage.content);
- if(builtins)
- blocks.pop_back();
-}
-
-void VariableResolver::visit(Block &block)
-{
- blocks.push_back(&block);
- block.variables.clear();
- TraversingVisitor::visit(block);
- blocks.pop_back();
-}
-
-void VariableResolver::visit(VariableReference &var)
-{
- var.declaration = 0;
- type = 0;
- for(vector<Block *>::iterator i=blocks.end(); i!=blocks.begin(); )
- {
- --i;
- map<string, VariableDeclaration *>::iterator j = (*i)->variables.find(var.name);
- if(j!=(*i)->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)
+void ConstantIdAssigner::visit(VariableDeclaration &var)
{
- if(binary.oper=="[")
+ if(var.layout)
{
+ auto i = find_member(var.layout->qualifiers, string("constant_id"), &Layout::Qualifier::name);
+ if(i!=var.layout->qualifiers.end() && i->has_value)
{
- SetForScope<bool> set(record_target, false);
- binary.right->visit(*this);
+ if(i->value==-1)
+ auto_constants.push_back(&var);
+ else
+ used_ids.insert(i->value);
}
- 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)
-{
- TraversingVisitor::visit(strct);
- blocks.back()->types[strct.name] = &strct;
-}
-
-void VariableResolver::visit(VariableDeclaration &var)
-{
- for(vector<Block *>::iterator i=blocks.end(); i!=blocks.begin(); )
- {
- --i;
- map<string, StructDeclaration *>::iterator j = (*i)->types.find(var.type);
- if(j!=(*i)->types.end())
- var.type_declaration = j->second;
- }
-
- if(!block_interface.empty() && var.interface.empty())
- var.interface = block_interface;
-
- TraversingVisitor::visit(var);
- blocks.back()->variables[var.name] = &var;
- if(anonymous && blocks.size()>1)
- blocks[blocks.size()-2]->variables[var.name] = &var;
-}
-
-void VariableResolver::visit(InterfaceBlock &iface)
-{
- SetFlag set(anonymous);
- SetForScope<string> set2(block_interface, iface.interface);
- TraversingVisitor::visit(iface);
-}
-
-
-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);
- }
- else if(!decls.empty() && decls.back()->definition)
- func.definition = decls.back()->definition;
- else
- decls.push_back(&func);
-
- TraversingVisitor::visit(func);
-}
-
-
-InterfaceGenerator::InterfaceGenerator():
- stage(0),
- scope_level(0)
-{ }
string InterfaceGenerator::get_out_prefix(Stage::Type type)
{
void InterfaceGenerator::apply(Stage &s)
{
- SetForScope<Stage *> set(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);
}
void InterfaceGenerator::visit(Block &block)
{
- SetForScope<unsigned> set(scope_level, scope_level+1);
- for(NodeList<Statement>::iterator i=block.body.begin(); i!=block.body.end(); )
+ SetForScope<Block *> set_block(current_block, &block);
+ for(auto i=block.body.begin(); i!=block.body.end(); ++i)
{
- (*i)->visit(*this);
-
- if(scope_level==1)
- {
- for(map<string, RefPtr<VariableDeclaration> >::iterator j=iface_declarations.begin(); j!=iface_declarations.end(); ++j)
- {
- NodeList<Statement>::iterator k = block.body.insert(i, j->second);
- (*k)->visit(*this);
- }
- iface_declarations.clear();
- }
+ assignment_insert_point = i;
+ if(&block==&stage->content)
+ iface_insert_point = i;
- apply_and_increment(block, i);
+ (*i)->visit(*this);
}
}
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) || iface_declarations.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;
- iface_declarations[name] = 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 true;
+ 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;
+
+ {
+ 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);
+ }
+
+ 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;
stmt->expression = assign;
+ current_block->body.insert(assignment_insert_point, stmt);
stmt->visit(*this);
- insert_nodes.push_back(stmt);
return *stmt;
}
{
if(var.declaration || !stage->previous)
return;
- if(iface_declarations.count(var.name))
+ /* 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_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, VariableDeclaration *> &prev_vars = stage->previous->content.variables;
+ auto 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")
{
- generate_interface(*i->second, "in", i->second->name);
- var.name = i->second->name;
+ 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, InterfaceBlock *> &prev_blocks = stage->previous->interface_blocks;
+ auto 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;
+ }
+
+ for(const auto &kvp: prev_blocks)
+ if(kvp.second->instance_name.empty() && kvp.second->struct_declaration)
+ {
+ const map<string, VariableDeclaration *> &iface_vars = kvp.second->struct_declaration->members.variables;
+ i = iface_vars.find(var.name);
+ if(i!=iface_vars.end())
+ {
+ generate_interface(*kvp.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(scope_level==1)
- 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)))
{
- remove_node = true;
+ out_var->source = var.source;
+ out_var->line = var.line;
+ nodes_to_remove.insert(&var);
if(var.init_expression)
{
ExpressionStatement &stmt = insert_assignment(var.name, var.init_expression->clone());
}
}
}
- 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;
+ auto 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)
+{
+ 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;
+ auto i = prev_blocks.find("out "+iface.block_name);
+ if(i!=prev_blocks.end())
+ {
+ iface.linked_block = i->second;
+ i->second->linked_block = &iface;
+ }
+ }
+ }
+
+ TraversingVisitor::visit(iface);
+}
+
+void InterfaceGenerator::visit(FunctionDeclaration &func)
{
- vector<VariableDeclaration *> pass_vars;
+ SetFlag set_scope(function_scope, true);
+ // Skip parameters because they're not useful here
+ func.body.visit(*this);
+}
- for(map<string, VariableDeclaration *>::const_iterator i=stage->in_variables.begin(); i!=stage->in_variables.end(); ++i)
- pass_vars.push_back(i->second);
- for(map<string, RefPtr<VariableDeclaration> >::const_iterator i=iface_declarations.begin(); i!=iface_declarations.end(); ++i)
- if(i->second->interface=="in")
- pass_vars.push_back(i->second.get());
+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)
+ for(const auto &kvp: stage->previous->content.variables)
{
- 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(kvp.second->interface!="out")
+ continue;
- if(!linked && generate_interface(*i->second, "in", i->second->name))
- pass_vars.push_back(i->second);
+ /* Pass through output variables from the previous stage, but only
+ those which are not already linked to an input here. */
+ if(!kvp.second->linked_declaration && generate_interface(*kvp.second, "in", kvp.second->name))
+ pass_vars.push_back(kvp.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;
insert_assignment("gl_Position", memacc);
}
- for(vector<VariableDeclaration *>::const_iterator i=pass_vars.begin(); i!=pass_vars.end(); ++i)
+ for(VariableDeclaration *v: pass_vars)
{
- string out_name = change_prefix((*i)->name, out_prefix);
- generate_interface(**i, "out", out_name);
+ string out_name = change_prefix(v->name, out_prefix);
+ generate_interface(*v, "out", out_name);
VariableReference *ref = new VariableReference;
- ref->name = (*i)->name;
+ ref->name = v->name;
if(pass.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
insert_assignment(out_name, ref);
}
- remove_node = true;
-}
-
-
-DeclarationReorderer::DeclarationReorderer():
- scope_level(0),
- 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)
-{
- SetForScope<unsigned> set(scope_level, scope_level+1);
- if(scope_level>1)
- 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;
+ nodes_to_remove.insert(&pass);
}
} // namespace SL
projects / libs / gl.git / blobdiff