]> git.tdb.fi Git - libs/gl.git/blobdiff - source/glsl/validate.cpp
Take care of SPIR-V load IDs in ternary expressions
[libs/gl.git] / source / glsl / validate.cpp
index 2da8345de4a7002e0020d98fe536443c72b8cba6..883b950ff07f2e46d9aa0037ddfce2fa2719c425 100644 (file)
@@ -34,6 +34,13 @@ void Validator::add_info(Node &node, const string &message)
 }
 
 
+void DeclarationValidator::apply(Stage &s, const Features &f)
+{
+       stage = &s;
+       features = f;
+       s.content.visit(*this);
+}
+
 const char *DeclarationValidator::describe_variable(ScopeType scope)
 {
        switch(scope)
@@ -62,7 +69,7 @@ void DeclarationValidator::visit(Layout &layout)
                {
                        binding = true;
 
-                       if(q.name=="set")
+                       if(q.name=="set" && features.target_api!=VULKAN)
                        {
                                error(layout, "Layout qualifier 'set' not allowed when targeting OpenGL");
                                continue;
@@ -70,11 +77,9 @@ void DeclarationValidator::visit(Layout &layout)
 
                        if(variable)
                        {
-                               TypeDeclaration *type = variable->type_declaration;
-                               while(BasicTypeDeclaration *basic = dynamic_cast<BasicTypeDeclaration *>(type))
-                                       type = basic->base_type;
+                               const TypeDeclaration *base_type = get_ultimate_base_type(variable->type_declaration);
                                bool uniform = (variable->interface=="uniform");
-                               allowed = (scope==GLOBAL && uniform && dynamic_cast<ImageTypeDeclaration *>(type));
+                               allowed = (scope==GLOBAL && uniform && dynamic_cast<const ImageTypeDeclaration *>(base_type));
                                err_descr = (uniform ? "variable of non-opaque type" : "non-uniform variable");
                        }
                        else if(iface_block)
@@ -207,13 +212,14 @@ void DeclarationValidator::visit(ImageTypeDeclaration &type)
 
 void DeclarationValidator::visit(StructDeclaration &strct)
 {
-       SetForScope<ScopeType> set_scope(scope, (scope!=INTERFACE_BLOCK ? STRUCT : scope));
+       SetForScope<ScopeType> set_scope(scope, (strct.block_name.empty() ? STRUCT : INTERFACE_BLOCK));
+       SetForScope<VariableDeclaration *> set_iface(iface_block, strct.block_declaration);
        TraversingVisitor::visit(strct);
 }
 
 void DeclarationValidator::visit(VariableDeclaration &var)
 {
-       SetForScope<VariableDeclaration *> set_var(variable, &var);
+       SetForScope<VariableDeclaration *> set_var((var.block_declaration ? iface_block : variable), &var);
 
        const char *descr = describe_variable(scope);
 
@@ -249,6 +255,11 @@ void DeclarationValidator::visit(VariableDeclaration &var)
                        error(var, format("Mismatched interface qualifier '%s' inside '%s' block", var.interface, iface_block->interface));
                else if(scope==STRUCT || scope==FUNCTION)
                        error(var, format("Interface qualifier not allowed on %s", descr));
+               else if(scope==GLOBAL && var.interface=="uniform" && !var.block_declaration && features.target_api==VULKAN)
+               {
+                       if(!dynamic_cast<const ImageTypeDeclaration *>(get_ultimate_base_type(var.type_declaration)))
+                               error(var, "Interface qualifier 'uniform' not allowed on non-opaque variable in global scope");
+               }
        }
 
        TypeDeclaration *type = var.type_declaration;
@@ -265,6 +276,13 @@ void DeclarationValidator::visit(VariableDeclaration &var)
                else if(scope==GLOBAL && var.interface!="uniform")
                        error(var, format("Type '%s' only allowed with uniform interface", type->name));
        }
+       else if(var.block_declaration)
+       {
+               if(stage->type==Stage::VERTEX && var.interface=="in")
+                       error(var, "Interface block not allowed on vertex shader input");
+               else if(stage->type==Stage::FRAGMENT && var.interface=="out")
+                       error(var, "Interface block not allowed on fragment shader output");
+       }
        else if(kind==BasicTypeDeclaration::VOID)
                error(var, "Type 'void' not allowed on variable");
        else if(kind==BasicTypeDeclaration::BOOL && var.source!=BUILTIN_SOURCE)
@@ -275,6 +293,9 @@ void DeclarationValidator::visit(VariableDeclaration &var)
                        error(var, "Type 'bool' not allowed on interface variable");
        }
 
+       if(var.array && !var.array_size)
+               error(var, "Array must have a size");
+
        if(var.init_expression)
        {
                if(scope==GLOBAL && !var.constant)
@@ -286,21 +307,6 @@ void DeclarationValidator::visit(VariableDeclaration &var)
        }
 }
 
-void DeclarationValidator::visit(InterfaceBlock &iface)
-{
-       SetForScope<ScopeType> set_scope(scope, INTERFACE_BLOCK);
-       SetForScope<InterfaceBlock *> set_iface(iface_block, &iface);
-
-       if(stage->type==Stage::VERTEX && iface.interface=="in")
-               error(iface, "Interface block not allowed on vertex shader input");
-       else if(stage->type==Stage::FRAGMENT && iface.interface=="out")
-               error(iface, "Interface block not allowed on fragment shader output");
-
-       TraversingVisitor::visit(iface);
-       if(iface.struct_declaration)
-               iface.struct_declaration->visit(*this);
-}
-
 void DeclarationValidator::visit(FunctionDeclaration &func)
 {
        SetForScope<ScopeType> set_scope(scope, FUNCTION_PARAM);
@@ -346,47 +352,49 @@ void IdentifierValidator::record_definition(const string &name, Statement &state
 
 void IdentifierValidator::visit(TypeDeclaration &type)
 {
-       check_definition(type.name, type);
+       if(type.source!=INTERNAL_SOURCE)
+               check_definition(type.name, type);
 }
 
 void IdentifierValidator::visit(StructDeclaration &strct)
 {
-       check_definition(strct.name, strct);
+       if(strct.block_name.empty())
+               check_definition(strct.name, strct);
        TraversingVisitor::visit(strct);
 }
 
 void IdentifierValidator::visit(VariableDeclaration &var)
 {
-       check_definition(var.name, var);
-       TraversingVisitor::visit(var);
-}
+       if(var.block_declaration)
+       {
+               string key = format("%s %s", var.interface, var.block_declaration->block_name);
+               auto i = interface_blocks.find(key);
+               if(i!=interface_blocks.end())
+                       multiple_definition(format("interface block '%s %s'", var.interface, var.block_declaration->block_name), var, *i->second);
+               else
+                       interface_blocks.insert(make_pair(key, &var));
 
-void IdentifierValidator::visit(InterfaceBlock &iface)
-{
-       string key = format("%s %s", iface.interface, iface.block_name);
-       auto i = interface_blocks.find(key);
-       if(i!=interface_blocks.end())
-               multiple_definition(format("interface block '%s %s'", iface.interface, iface.block_name), iface, *i->second);
-       else
-               interface_blocks.insert(make_pair(key, &iface));
+               if(Statement *previous = find_definition(var.block_declaration->block_name))
+               {
+                       const VariableDeclaration *prev_var = dynamic_cast<const VariableDeclaration *>(previous);
+                       if(!prev_var || !prev_var->block_declaration)
+                               multiple_definition(format("'%s'", var.block_declaration->block_name), var, *previous);
+               }
+               else
+                       record_definition(var.block_declaration->block_name, var);
 
-       if(Statement *previous = find_definition(iface.block_name))
-       {
-               if(!dynamic_cast<InterfaceBlock *>(previous))
-                       multiple_definition(format("'%s'", iface.block_name), iface, *previous);
+               if(var.name.find(' ')!=string::npos)
+               {
+                       // Inject anonymous interface block members into the global scope
+                       for(const auto &kvp: var.block_declaration->members.variables)
+                               check_definition(kvp.first, *kvp.second);
+               }
        }
-       else
-               record_definition(iface.block_name, iface);
 
-       if(!iface.instance_name.empty())
-               check_definition(iface.instance_name, iface);
+       if(var.name.find(' ')==string::npos)
+               check_definition(var.name, var);
 
-       if(iface.instance_name.empty() && iface.struct_declaration)
-       {
-               // Inject anonymous interface block members into the global scope
-               for(const auto &kvp: iface.struct_declaration->members.variables)
-                       check_definition(kvp.first, *kvp.second);
-       }
+       TraversingVisitor::visit(var);
 }
 
 void IdentifierValidator::visit(FunctionDeclaration &func)
@@ -434,7 +442,7 @@ void ReferenceValidator::visit(VariableReference &var)
        if(!var.declaration)
                error(var, format("Use of undeclared variable '%s'", var.name));
        else if(stage->type!=Stage::VERTEX && var.declaration->interface=="in" && var.name.compare(0, 3, "gl_") && !var.declaration->linked_declaration)
-               error(var, format("Use of unlinked input variable '%s'", var.name));
+               error(var, format("Use of unlinked input %s '%s'", (var.declaration->block_declaration ? "block" : "variable"), var.name));
 }
 
 void ReferenceValidator::visit(MemberAccess &memacc)
@@ -444,16 +452,6 @@ void ReferenceValidator::visit(MemberAccess &memacc)
        TraversingVisitor::visit(memacc);
 }
 
-void ReferenceValidator::visit(InterfaceBlockReference &iface)
-{
-       /* An interface block reference without a declaration should be impossible
-       since references are generated based on existing declarations. */
-       if(!iface.declaration)
-               error(iface, format("Use of undeclared interface block '%s'", iface.name));
-       else if(stage->type!=Stage::VERTEX && iface.declaration->interface=="in" && !iface.declaration->linked_block)
-               error(iface, format("Use of unlinked input block '%s'", iface.name));
-}
-
 void ReferenceValidator::visit(FunctionCall &call)
 {
        if((!call.constructor && !call.declaration) || (call.constructor && !call.type))
@@ -493,13 +491,6 @@ void ReferenceValidator::visit(VariableDeclaration &var)
        TraversingVisitor::visit(var);
 }
 
-void ReferenceValidator::visit(InterfaceBlock &iface)
-{
-       if(!iface.struct_declaration)
-               error(iface, format("Interface block '%s %s' lacks a struct declaration", iface.interface, iface.block_name));
-       TraversingVisitor::visit(iface);
-}
-
 void ReferenceValidator::visit(FunctionDeclaration &func)
 {
        if(!func.return_type_declaration)
@@ -513,22 +504,18 @@ void ExpressionValidator::visit(VariableReference &var)
        if(var.declaration && constant_expression)
        {
                if(!var.declaration->constant)
-                       error(var, format("Reference to non-constant variable '%s' in a constant expression", var.name));
+               {
+                       const char *kind = (var.declaration->block_declaration ? "interface block" : "non-constant variable");
+                       error(var, format("Reference to %s '%s' in a constant expression", kind, var.name));
+               }
                else if(var.declaration->layout && constant_expression==FIXED_CONSTANT)
                {
-                       auto i = find_member(var.declaration->layout->qualifiers, string("constant_id"), &Layout::Qualifier::name);
-                       if(i!=var.declaration->layout->qualifiers.end())
+                       if(has_layout_qualifier(var.declaration->layout.get(), "constant_id"))
                                error(var, format("Reference to specialization constant '%s' in a fixed constant expression", var.name));
                }
        }
 }
 
-void ExpressionValidator::visit(InterfaceBlockReference &iface)
-{
-       if(constant_expression)
-               error(iface, format("Reference to interface block '%s' in a constant expression", iface.name));
-}
-
 void ExpressionValidator::visit(Swizzle &swizzle)
 {
        unsigned size = 0;
@@ -652,13 +639,8 @@ void ExpressionValidator::visit(VariableDeclaration &var)
                var.layout->visit(*this);
        if(var.init_expression)
        {
-               ConstantKind const_kind = (var.constant ? SPEC_CONSTANT : NOT_CONSTANT);
-               if(var.layout)
-               {
-                       auto i = find_member(var.layout->qualifiers, string("constant_id"), &Layout::Qualifier::name);
-                       if(i!=var.layout->qualifiers.end())
-                               const_kind = FIXED_CONSTANT;
-               }
+               ConstantKind const_kind = (!var.constant ? NOT_CONSTANT :
+                       has_layout_qualifier(var.layout.get(), "constant_id") ? FIXED_CONSTANT : SPEC_CONSTANT);
 
                SetForScope<ConstantKind> set_const(constant_expression, const_kind);
                TraversingVisitor::visit(var.init_expression);
@@ -760,18 +742,13 @@ void FlowControlValidator::visit(Iteration &iter)
 }
 
 
-int StageInterfaceValidator::get_location(const Layout &layout)
-{
-       return get_layout_value(layout, "location", -1);
-}
-
 void StageInterfaceValidator::visit(VariableDeclaration &var)
 {
-       int location = (var.layout ? get_location(*var.layout) : -1);
+       int location = get_layout_value(var.layout.get(), "location");
        if(var.interface=="in" && var.linked_declaration)
        {
                const Layout *linked_layout = var.linked_declaration->layout.get();
-               int linked_location = (linked_layout ? get_location(*linked_layout) : -1);
+               int linked_location = get_layout_value(linked_layout, "location");
                if(linked_location!=location)
                {
                        error(var, format("Mismatched location %d for 'in %s'", location, var.name));
@@ -835,6 +812,11 @@ void GlobalInterfaceValidator::check_uniform(const Uniform &uni)
                        error(*uni.node, format("Mismatched location %d for uniform '%s'", uni.location, uni.name));
                        add_info(*i->second->node, format("Previously declared here with location %d", i->second->location));
                }
+               if(i->second->desc_set!=uni.desc_set)
+               {
+                       error(*uni.node, format("Mismatched descriptor set %d for uniform '%s'", uni.desc_set, uni.name));
+                       add_info(*i->second->node, format("Previously declared here with descriptor set %d", i->second->desc_set));
+               }
                if(uni.bind_point>=0 && i->second->bind_point>=0 && i->second->bind_point!=uni.bind_point)
                {
                        error(*uni.node, format("Mismatched binding %d for uniform '%s'", uni.bind_point, uni.name));
@@ -897,32 +879,16 @@ void GlobalInterfaceValidator::visit(VariableDeclaration &var)
                Uniform uni;
                uni.node = &var;
                uni.type = var.type_declaration;
-               uni.name = var.name;
+               uni.name = (var.block_declaration ? var.block_declaration->block_name : var.name);
                if(var.layout)
                {
-                       uni.location = get_layout_value(*var.layout, "location");
-                       uni.loc_count = LocationCounter().apply(var);
-                       uni.desc_set = get_layout_value(*var.layout, "set", 0);
-                       uni.bind_point = get_layout_value(*var.layout, "binding");
-               }
-
-               uniforms.push_back(uni);
-               check_uniform(uniforms.back());
-       }
-}
-
-void GlobalInterfaceValidator::visit(InterfaceBlock &iface)
-{
-       if(iface.interface=="uniform")
-       {
-               Uniform uni;
-               uni.node = &iface;
-               uni.type = iface.struct_declaration;
-               uni.name = iface.block_name;
-               if(iface.layout)
-               {
-                       uni.desc_set = get_layout_value(*iface.layout, "set", 0);
-                       uni.bind_point = get_layout_value(*iface.layout, "binding");
+                       if(!var.block_declaration)
+                       {
+                               uni.location = get_layout_value(var.layout.get(), "location");
+                               uni.loc_count = LocationCounter().apply(var);
+                       }
+                       uni.desc_set = get_layout_value(var.layout.get(), "set", 0);
+                       uni.bind_point = get_layout_value(var.layout.get(), "binding");
                }
 
                uniforms.push_back(uni);