Add support for integer vertex attributes

[libs/gl.git] / source / builders / vertexarraybuilder.cpp

diff --git a/source/builders/vertexarraybuilder.cpp b/source/builders/vertexarraybuilder.cpp
index 3afe9a40e2bf22c48869207ef9b73235c9dd784b..6ede4d2ab60f8a417087f0d784ac0b00642c2114 100644 (file)
--- a/source/builders/vertexarraybuilder.cpp
+++ b/source/builders/vertexarraybuilder.cpp
@@ -17,6 +17,7 @@ void VertexArrayBuilder::vertex_(const Vector4 &vtx)
        for(const UInt16 *a=format.begin(); a!=format.end(); ++a)
        {
                unsigned sem = get_attribute_semantic(*a);
+               bool integer = is_integer_attribute(*a);
                DataType type = get_attribute_source_type(*a);
                unsigned cc = get_attribute_component_count(*a);
 
@@ -24,19 +25,19 @@ void VertexArrayBuilder::vertex_(const Vector4 &vtx)
                {
                        const Vector4 &value = (sem==0 ? vtx : attr[sem]);
                        if(type==UNSIGNED_BYTE)
-                               store_attribute<UInt8>(ptr, value, cc);
+                               store_attribute<UInt8>(ptr, value, !integer, cc);
                        else if(type==BYTE)
-                               store_attribute<Int8>(ptr, value, cc);
+                               store_attribute<Int8>(ptr, value, !integer, cc);
                        else if(type==UNSIGNED_SHORT)
-                               store_attribute<UInt16>(ptr, value, cc);
+                               store_attribute<UInt16>(ptr, value, !integer, cc);
                        else if(type==SHORT)
-                               store_attribute<Int16>(ptr, value, cc);
+                               store_attribute<Int16>(ptr, value, !integer, cc);
                        else if(type==UNSIGNED_INT)
-                               store_attribute<UInt32>(ptr, value, cc);
+                               store_attribute<UInt32>(ptr, value, !integer, cc);
                        else if(type==INT)
-                               store_attribute<Int32>(ptr, value, cc);
+                               store_attribute<Int32>(ptr, value, !integer, cc);
                        else if(type==FLOAT)
-                               store_attribute<float>(ptr, value, cc);
+                               store_attribute<float>(ptr, value, false, cc);
                }
 
                ptr += get_attribute_size(*a);
@@ -44,12 +45,12 @@ void VertexArrayBuilder::vertex_(const Vector4 &vtx)
 }
 
 template<typename T>
-void VertexArrayBuilder::store_attribute(char *ptr, const Vector4 &value, unsigned count)
+void VertexArrayBuilder::store_attribute(char *ptr, const Vector4 &value, bool normalize, unsigned count)
 {
        T *tptr = reinterpret_cast<T *>(ptr);
        for(unsigned i=0; i<count; ++i)
        {
-               if(!numeric_limits<T>::is_integer)
+               if(!numeric_limits<T>::is_integer || !normalize)
                        *tptr++ = value[i];
                else if(numeric_limits<T>::is_signed)
                        *tptr++ = round(min(max(value[i], -1.0f), 1.0f)*numeric_limits<T>::max());