+#include <msp/core/algorithm.h>
#include <msp/core/hash.h>
#include <msp/core/raii.h>
-#include <msp/strings/lexicalcast.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)
{
- stage.content.visit(*this);
- NodeRemover().apply(stage, nodes_to_remove);
-}
-
-void DeclarationCombiner::visit(Block &block)
-{
- if(current_block)
- return;
-
- TraversingVisitor::visit(block);
-}
-
-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->name==i->name)
- {
- j->has_value = i->value;
- j->value = i->value;
- found = true;
- }
-
- if(!found)
- ptr->layout->qualifiers.push_back(*i);
- }
- }
- else
- ptr->layout = var.layout;
- }
- nodes_to_remove.insert(&var);
- }
- else
- ptr = &var;
-}
-
-
-ConstantSpecializer::ConstantSpecializer():
- values(0)
-{ }
-
-void ConstantSpecializer::apply(Stage &stage, const map<string, int> *v)
-{
- values = v;
- stage.content.visit(*this);
-}
-
-void ConstantSpecializer::visit(VariableDeclaration &var)
-{
- bool specializable = false;
- if(var.layout)
- {
- vector<Layout::Qualifier> &qualifiers = var.layout->qualifiers;
- for(vector<Layout::Qualifier>::iterator i=qualifiers.begin(); i!=qualifiers.end(); ++i)
- if(i->name=="constant_id")
- {
- specializable = true;
- if(values)
- qualifiers.erase(i);
- else if(i->value==-1)
- i->value = hash32(var.name)&0x7FFFFFFF;
- break;
- }
-
- if(qualifiers.empty())
- var.layout = 0;
- }
-
- if(specializable && values)
- {
- map<string, int>::const_iterator i = values->find(var.name);
- if(i!=values->end())
- {
- RefPtr<Literal> literal = new Literal;
- if(var.type=="bool")
- literal->token = (i->second ? "true" : "false");
- else if(var.type=="int")
- literal->token = lexical_cast<string>(i->second);
- var.init_expression = literal;
- }
- }
-}
-
-
-void BlockHierarchyResolver::enter(Block &block)
-{
- block.parent = current_block;
-}
-
-
-VariableResolver::VariableResolver():
- stage(0),
- members(0),
- record_target(false),
- assignment_target(0),
- self_referencing(false)
-{ }
-
-void VariableResolver::apply(Stage &s)
-{
- stage = &s;
- s.types.clear();
- s.interface_blocks.clear();
- s.content.visit(*this);
-}
-
-void VariableResolver::enter(Block &block)
-{
- block.variables.clear();
-}
-
-void VariableResolver::visit(VariableReference &var)
-{
- var.declaration = 0;
- members = 0;
- for(Block *block=current_block; (!var.declaration && block); block=block->parent)
- {
- map<string, VariableDeclaration *>::iterator i = block->variables.find(var.name);
- if(i!=block->variables.end())
- var.declaration = i->second;
- }
-
- if(var.declaration)
- {
- if(var.declaration->type_declaration)
- members = &var.declaration->type_declaration->members.variables;
- }
- else
- {
- 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)
- {
- iface_ref = new InterfaceBlockReference;
- iface_ref->name = var.name;
- iface_ref->declaration = i->second;
- members = &i->second->members.variables;
- }
- else
- {
- for(i=blocks.begin(); (!var.declaration && i!=blocks.end()); ++i)
- if(i->second->instance_name.empty())
- {
- map<string, VariableDeclaration *>::iterator j = i->second->members.variables.find(var.name);
- if(j!=i->second->members.variables.end())
- var.declaration = j->second;
- }
- }
- }
-
- 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(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);
- if(i!=stage->interface_blocks.end())
- {
- iface.declaration = i->second;
- members = &i->second->members.variables;
- break;
- }
- }
-}
-
-void VariableResolver::visit(MemberAccess &memacc)
-{
- members = 0;
- iface_ref = 0;
- memacc.left->visit(*this);
-
- if(iface_ref)
- memacc.left = iface_ref;
- iface_ref = 0;
+ for(Stage &s: module.stages)
+ s.content.visit(*this);
- memacc.declaration = 0;
- if(members)
+ for(VariableDeclaration *v: auto_constants)
{
- map<string, VariableDeclaration *>::iterator i = members->find(memacc.member);
- if(i!=members->end())
- {
- memacc.declaration = i->second;
- if(i->second->type_declaration)
- members = &i->second->type_declaration->members.variables;
- }
- else
- members = 0;
- }
-}
+ unsigned id = hash32(v->name)%features.constant_id_range;
+ while(used_ids.count(id))
+ id = (id+1)%features.constant_id_range;
-void VariableResolver::visit(BinaryExpression &binary)
-{
- if(binary.oper=="[")
- {
- {
- SetForScope<bool> set(record_target, false);
- binary.right->visit(*this);
- }
- members = 0;
- iface_ref = 0;
- binary.left->visit(*this);
- if(iface_ref)
- binary.left = iface_ref;
- iface_ref = 0;
- }
- else
- {
- TraversingVisitor::visit(binary);
- members = 0;
- }
-}
+ auto i = find_member(v->layout->qualifiers, string("constant_id"), &Layout::Qualifier::name);
+ if(i!=v->layout->qualifiers.end())
+ i->value = id;
-void VariableResolver::visit(Assignment &assign)
-{
- {
- SetFlag set(record_target);
- assignment_target = 0;
- assign.left->visit(*this);
+ used_ids.insert(id);
}
-
- 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);
- stage->types[strct.name] = &strct;
-}
-
-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;
-}
-
-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;
- if(!iface.instance_name.empty())
- stage->interface_blocks[iface.instance_name] = &iface;
-
- SetForScope<string> set_iface(block_interface, iface.interface);
- TraversingVisitor::visit(iface);
-}
-
-
-void FunctionResolver::apply(Stage &s)
-{
- stage = &s;
- s.functions.clear();
- s.content.visit(*this);
-}
-
-void FunctionResolver::visit(FunctionCall &call)
-{
- map<string, FunctionDeclaration *>::iterator i = stage->functions.find(call.name);
- if(i!=stage->functions.end())
- call.declaration = i->second;
-
- TraversingVisitor::visit(call);
-}
-
-void FunctionResolver::visit(FunctionDeclaration &func)
-{
- FunctionDeclaration *&stage_decl = stage->functions[func.name];
- vector<FunctionDeclaration *> &decls = declarations[func.name];
- if(func.definition==&func)
+ if(var.layout)
{
- stage_decl = &func;
-
- for(vector<FunctionDeclaration *>::iterator i=decls.begin(); i!=decls.end(); ++i)
+ auto i = find_member(var.layout->qualifiers, string("constant_id"), &Layout::Qualifier::name);
+ if(i!=var.layout->qualifiers.end() && i->has_value)
{
- (*i)->definition = func.definition;
- (*i)->body.body.clear();
+ if(i->value==-1)
+ auto_constants.push_back(&var);
+ else
+ used_ids.insert(i->value);
}
}
- else
- {
- func.definition = 0;
- if(!stage_decl)
- stage_decl = &func;
- else
- func.definition = stage_decl->definition;
- }
- decls.push_back(&func);
-
- TraversingVisitor::visit(func);
}
-InterfaceGenerator::InterfaceGenerator():
- stage(0),
- function_scope(false),
- iface_block(0),
- copy_block(false),
- iface_target_block(0)
-{ }
-
string InterfaceGenerator::get_out_prefix(Stage::Type type)
{
if(type==Stage::VERTEX)
void InterfaceGenerator::visit(Block &block)
{
SetForScope<Block *> set_block(current_block, &block);
- for(NodeList<Statement>::iterator i=block.body.begin(); i!=block.body.end(); ++i)
+ for(auto i=block.body.begin(); i!=block.body.end(); ++i)
{
assignment_insert_point = i;
if(&block==&stage->content)
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;
+
+ 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;
+ /* 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));
+ if(iface_target_block==&stage->content && iface=="in")
+ declared_inputs.push_back(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.block_name))
+ return 0;
InterfaceBlock *in_block = new InterfaceBlock;
in_block->interface = "in";
- in_block->name = out_block.name;
+ 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;
{
SetFlag set_copy(copy_block, true);
- SetForScope<Block *> set_target(iface_target_block, &in_block->members);
- SetForScope<NodeList<Statement>::iterator> set_ins_pt(iface_insert_point, in_block->members.body.end());
- out_block.members.visit(*this);
+ 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[in_block->name] = in_block;
+ stage->interface_blocks.insert(make_pair("in "+in_block->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, VariableDeclaration *> &prev_vars = stage->previous->content.variables;
- map<string, VariableDeclaration *>::const_iterator i = prev_vars.find(var.name);
+ 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;
- 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)
+ 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(j=prev_blocks.begin(); j!=prev_blocks.end(); ++j)
- if(j->second->instance_name.empty())
+ for(const auto &kvp: prev_blocks)
+ if(kvp.second->instance_name.empty() && kvp.second->struct_declaration)
{
- i = j->second->members.variables.find(var.name);
- if(i!=j->second->members.variables.end())
+ 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(*j->second);
+ generate_interface(*kvp.second);
return;
}
}
void InterfaceGenerator::visit(VariableDeclaration &var)
{
if(copy_block)
- {
generate_interface(var, "in", var.name);
- return;
- }
-
- if(iface_block)
+ else if(var.interface=="out")
{
- if(iface_block->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;
- }
- 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")
+ else if(var.interface=="in" && current_block==&stage->content)
{
- /* Try to link in variables in global scope with out variables from
- previous stage */
- if(current_block==&stage->content && !var.linked_declaration && 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_vars = stage->previous->content.variables;
- map<string, VariableDeclaration *>::const_iterator i = prev_vars.find(var.name);
+ auto i = prev_vars.find(var.name);
if(i!=prev_vars.end() && i->second->interface=="out")
{
var.linked_declaration = i->second;
{
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)
+ auto i = prev_blocks.find("out "+iface.block_name);
+ if(i!=prev_blocks.end())
{
iface.linked_block = i->second;
i->second->linked_block = &iface;
}
}
- SetForScope<InterfaceBlock *> set_iface(iface_block, &iface);
TraversingVisitor::visit(iface);
}
void InterfaceGenerator::visit(Passthrough &pass)
{
- vector<VariableDeclaration *> pass_vars;
-
- 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);
+ // Pass through all input variables declared so far.
+ vector<VariableDeclaration *> pass_vars = declared_inputs;
if(stage->previous)
{
- 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)
+ 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)
{
+ /* 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
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