#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)
-{
- 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)
{ }
{
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;
}
}
}
-void BlockHierarchyResolver::enter(Block &block)
-{
- block.parent = current_block;
-}
-
-
-VariableResolver::VariableResolver():
- stage(0),
- r_members(0),
- record_target(false),
- r_assignment_target(0),
- r_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;
- r_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)
- r_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)
- {
- r_iface_ref = new InterfaceBlockReference;
- r_iface_ref->name = var.name;
- r_iface_ref->declaration = i->second;
- r_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(r_assignment_target)
- {
- record_target = false;
- r_assignment_target = 0;
- }
- else
- r_assignment_target = var.declaration;
- }
- 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);
- if(i!=stage->interface_blocks.end())
- {
- iface.declaration = i->second;
- r_members = &i->second->members.variables;
- break;
- }
- }
-}
-
-void VariableResolver::visit(MemberAccess &memacc)
-{
- r_members = 0;
- r_iface_ref = 0;
- memacc.left->visit(*this);
-
- if(r_iface_ref)
- memacc.left = r_iface_ref;
- r_iface_ref = 0;
-
- memacc.declaration = 0;
- if(r_members)
- {
- map<string, VariableDeclaration *>::iterator i = r_members->find(memacc.member);
- if(i!=r_members->end())
- {
- memacc.declaration = i->second;
- if(i->second->type_declaration)
- r_members = &i->second->type_declaration->members.variables;
- }
- else
- 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->token[0]=='[')
- {
- {
- SetForScope<bool> set(record_target, false);
- binary.right->visit(*this);
- }
- r_members = 0;
- r_iface_ref = 0;
- binary.left->visit(*this);
- if(r_iface_ref)
- binary.left = r_iface_ref;
- }
- else
- {
- TraversingVisitor::visit(binary);
- r_members = 0;
- }
-
- r_iface_ref = 0;
-}
-
-void VariableResolver::visit(Assignment &assign)
-{
- {
- SetFlag set(record_target);
- r_assignment_target = 0;
- assign.left->visit(*this);
- }
-
- r_self_referencing = false;
- assign.right->visit(*this);
-
- assign.self_referencing = (r_self_referencing || assign.oper->token[0]!='=');
- assign.target_declaration = r_assignment_target;
- r_members = 0;
- r_iface_ref = 0;
-}
-
-void VariableResolver::visit(FunctionCall &call)
-{
- TraversingVisitor::visit(call);
- r_members = 0;
- r_iface_ref = 0;
-}
-
-void VariableResolver::visit(StructDeclaration &strct)
-{
- 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)
- {
- stage_decl = &func;
-
- for(vector<FunctionDeclaration *>::iterator i=decls.begin(); i!=decls.end(); ++i)
- {
- (*i)->definition = func.definition;
- (*i)->body.body.clear();
- }
- }
- 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)
{ }
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)
{
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;
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)
+ 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;
}
for(j=prev_blocks.begin(); j!=prev_blocks.end(); ++j)
- if(j->second->instance_name.empty())
+ if(j->second->instance_name.empty() && j->second->struct_declaration)
{
- i = j->second->members.variables.find(var.name);
- if(i!=j->second->members.variables.end())
+ 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(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);
{
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.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)
{
if(i->second->interface!="out")
continue;
+ /* 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";
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