2 #include "vertexarray.h"
3 #include "vertexarraybuilder.h"
10 VertexArrayBuilder::VertexArrayBuilder(VertexArray &a):
14 void VertexArrayBuilder::vertex_(const Vector4 &vtx)
16 char *ptr = array.append();
17 for(VertexAttribute a: array.get_format())
19 unsigned sem = get_attribute_semantic(a);
20 if(!is_padding(a) && sem<attr.size())
22 bool integer = is_integer_attribute(a);
23 DataType type = get_attribute_source_type(a);
24 unsigned cc = get_attribute_component_count(a);
26 const Vector4 &value = (sem==0 ? vtx : attr[sem]);
27 if(type==UNSIGNED_BYTE)
28 store_attribute<uint8_t>(ptr, value, !integer, cc);
30 store_attribute<int8_t>(ptr, value, !integer, cc);
31 else if(type==UNSIGNED_SHORT)
32 store_attribute<uint16_t>(ptr, value, !integer, cc);
34 store_attribute<int16_t>(ptr, value, !integer, cc);
35 else if(type==UNSIGNED_INT)
36 store_attribute<uint32_t>(ptr, value, !integer, cc);
38 store_attribute<int32_t>(ptr, value, !integer, cc);
40 store_attribute<float>(ptr, value, false, cc);
43 ptr += get_attribute_size(a);
48 void VertexArrayBuilder::store_attribute(char *ptr, const Vector4 &value, bool normalize, unsigned count)
50 T *tptr = reinterpret_cast<T *>(ptr);
51 for(unsigned i=0; i<count; ++i)
53 if(!numeric_limits<T>::is_integer || !normalize)
55 else if(numeric_limits<T>::is_signed)
56 *tptr++ = round(min(max(value[i], -1.0f), 1.0f)*numeric_limits<T>::max());
58 *tptr++ = round(min(max(value[i], 0.0f), 1.0f)*numeric_limits<T>::max());