Check the flat qualifier from the correct member

[libs/gl.git] / source / glsl / generate.cpp

diff --git a/source/glsl/generate.cpp b/source/glsl/generate.cpp
index 0a9e8e85a81380977cdf6cbc27f767d61fcf4ebc..635d9f15dcec1b6720a13df6285d83a6e329c3aa 100644 (file)
--- a/source/glsl/generate.cpp
+++ b/source/glsl/generate.cpp
@@ -2,6 +2,7 @@
 #include <msp/core/hash.h>
 #include <msp/core/raii.h>
 #include "generate.h"
+#include "reflect.h"
 
 using namespace std;
 
@@ -105,11 +106,23 @@ VariableDeclaration *InterfaceGenerator::generate_interface(VariableDeclaration
 
        VariableDeclaration* iface_var = new VariableDeclaration;
        iface_var->sampling = var.sampling;
+       if(stage->type==Stage::FRAGMENT && iface=="in")
+               if(BasicTypeDeclaration *basic = dynamic_cast<BasicTypeDeclaration *>(var.type_declaration))
+                       if(BasicTypeDeclaration *elem = get_element_type(*basic))
+                               if(elem->kind==BasicTypeDeclaration::INT)
+                                       iface_var->interpolation = "flat";
        iface_var->interface = iface;
        iface_var->type = var.type;
        iface_var->name = name;
-       // Geometry shader inputs are always arrays.
-       if(stage->type==Stage::GEOMETRY)
+       // Tessellation and geometry inputs may be arrayed.
+       if(stage->type==Stage::TESS_CONTROL)
+               // VS out -> TCS in: add | TCS in -> TCS out: unchanged | VS out -> TCS out: add
+               iface_var->array = (var.array || var.interface!="in");
+       else if(stage->type==Stage::TESS_EVAL)
+               // TCS out -> TES in: unchanged | TES in -> TES out: remove | TCS out -> TES out: remove
+               iface_var->array = (var.array && iface=="in");
+       else if(stage->type==Stage::GEOMETRY)
+               // VS/TES out -> GS in: add | GS in -> GS out: remove | VS/TES out -> GS out: unchanged
                iface_var->array = ((var.array && var.interface!="in") || iface=="in");
        else
                iface_var->array = var.array;
@@ -203,7 +216,7 @@ void InterfaceGenerator::visit(VariableReference &var)
        }
 
        for(const auto &kvp: stage->previous->interface_blocks)
-               if(kvp.first.find(' ')!=string::npos)
+               if(kvp.second->name.find(' ')!=string::npos)
                {
                        const map<string, VariableDeclaration *> &iface_vars = kvp.second->block_declaration->members.variables;
                        i = iface_vars.find(var.name);
@@ -338,6 +351,151 @@ void InterfaceGenerator::visit(Passthrough &pass)
        nodes_to_remove.insert(&pass);
 }
 
+
+void LayoutDefaulter::apply(Stage &stage)
+{
+       if(stage.type==Stage::TESS_EVAL)
+       {
+               stage.content.visit(*this);
+               if((need_winding || need_spacing) && in_iface)
+               {
+                       if(need_winding)
+                               in_iface->layout.qualifiers.emplace_back("ccw");
+                       if(need_spacing)
+                               in_iface->layout.qualifiers.emplace_back("equal_spacing");
+               }
+       }
+}
+
+void LayoutDefaulter::visit(InterfaceLayout &iface)
+{
+       if(iface.interface=="in")
+       {
+               if(!in_iface)
+                       in_iface = &iface;
+               for(const Layout::Qualifier &q: iface.layout.qualifiers)
+               {
+                       if(q.name=="cw" || q.name=="ccw")
+                               need_winding = false;
+                       else if(q.name=="equal_spacing" || q.name=="fractional_even_spacing" || q.name=="fractional_odd_spacing")
+                               need_spacing = false;
+               }
+       }
+}
+
+
+void ArraySizer::apply(Stage &stage)
+{
+       stage.content.visit(*this);
+       for(const auto &kvp: max_indices)
+               if(kvp.first->array && !kvp.first->array_size)
+               {
+                       int size = 0;
+                       if(stage.type==Stage::GEOMETRY && kvp.first->interface=="in")
+                               size = input_size;
+                       else if(kvp.second>=0)
+                               size = kvp.second+1;
+                       if(!size && !kvp.first->name.compare(0, 3, "gl_"))
+                               size = 1;
+
+                       if(size>0)
+                       {
+                               Literal *literal_size = new Literal;
+                               literal_size->token = lexical_cast<string>(size);
+                               literal_size->value = size;
+                               kvp.first->array_size = literal_size;
+                       }
+               }
+}
+
+void ArraySizer::visit(VariableReference &var)
+{
+       r_declaration = var.declaration;
+}
+
+void ArraySizer::visit(MemberAccess &memacc)
+{
+       r_declaration = 0;
+       TraversingVisitor::visit(memacc);
+       VariableDeclaration *member_declaration = 0;
+       if(r_declaration)
+               if(StructDeclaration *strct = dynamic_cast<StructDeclaration *>(r_declaration->type_declaration))
+               {
+                       auto i = strct->members.variables.find(memacc.member);
+                       if(i!=strct->members.variables.end())
+                               member_declaration = i->second;
+               }
+       r_declaration = member_declaration;
+}
+
+void ArraySizer::visit(Swizzle &swizzle)
+{
+       TraversingVisitor::visit(swizzle);
+       r_declaration = 0;
+}
+
+void ArraySizer::visit(UnaryExpression &unary)
+{
+       TraversingVisitor::visit(unary);
+       r_declaration = 0;
+}
+
+void ArraySizer::visit(BinaryExpression &binary)
+{
+       if(binary.oper->token[0]=='[')
+               if(const Literal *literal_index = dynamic_cast<const Literal *>(binary.right.get()))
+                       if(literal_index->value.check_type<int>())
+                       {
+                               r_declaration = 0;
+                               binary.left->visit(*this);
+                               if(r_declaration)
+                               {
+                                       max_indices[r_declaration] = literal_index->value.value<int>();
+                                       return;
+                               }
+                       }
+
+       TraversingVisitor::visit(binary);
+}
+
+void ArraySizer::visit(TernaryExpression &ternary)
+{
+       TraversingVisitor::visit(ternary);
+       r_declaration = 0;
+}
+
+void ArraySizer::visit(FunctionCall &call)
+{
+       TraversingVisitor::visit(call);
+       r_declaration = 0;
+}
+
+void ArraySizer::visit(InterfaceLayout &layout)
+{
+       if(layout.interface=="in")
+       {
+               for(const Layout::Qualifier &q: layout.layout.qualifiers)
+               {
+                       if(q.name=="points")
+                               input_size = 1;
+                       else if(q.name=="lines")
+                               input_size = 2;
+                       else if(q.name=="triangles")
+                               input_size = 3;
+                       else if(q.name=="lines_adjacency")
+                               input_size = 4;
+                       else if(q.name=="triangles_adjacency")
+                               input_size = 6;
+               }
+       }
+}
+
+void ArraySizer::visit(VariableDeclaration &var)
+{
+       if(var.array && !var.array_size)
+               max_indices[&var] = 0;
+}
+
 } // namespace SL
 } // namespace GL
 } // namespace Msp