Shape(const Program& prog, const ShapeBuilder& builder)
: make_shape(builder)
, shape_instr(make_shape.Instructions())
, shape_indices(make_shape.Indices())
, vbos(4) {
// bind the VAO for the shape
vao.Bind();
typename ShapeBuilder::VertexAttribs vert_attr_info;
const GLchar* vert_attr_name[] = {
"Position", "Normal", "Tangent", "TexCoord"};
for(int va = 0; va != 4; ++va) {
const GLchar* name = vert_attr_name[va];
std::vector<GLfloat> data;
auto getter = vert_attr_info.VertexAttribGetter(data, name);
if(getter != nullptr)
try {
// bind the VBO for the vertex attribute
vbos[va].Bind(Buffer::Target::Array);
GLuint npv = getter(make_shape, data);
// upload the data
Buffer::Data(Buffer::Target::Array, data);
// setup the vertex attribs array
VertexArrayAttrib attr(prog, name);
attr.Setup<GLfloat>(npv);
attr.Enable();
} catch(Error&) {
}
}
}
void _init(
const ShapeBuilder& builder,
const ShapeIndices& shape_indices,
Iterator name,
Iterator end
)
{
VertexArray::Unbind();
typename ShapeBuilder::VertexAttribs vert_attr_info;
unsigned i = 0;
std::vector<GLfloat> data;
while(name != end)
{
auto getter = vert_attr_info.VertexAttribGetter(
data,
*name
);
if(getter != nullptr)
{
_vbos[i].Bind(Buffer::Target::Array);
_npvs[i] = getter(builder, data);
_names[i] = *name;
Buffer::Data(Buffer::Target::Array, data);
}
++name;
++i;
}
if(!shape_indices.empty())
{
assert((i+1) == _npvs.size());
assert((i+1) == _vbos.size());
_npvs[i] = 1;
_vbos[i].Bind(Buffer::Target::ElementArray);
Buffer::Data(
Buffer::Target::ElementArray,
shape_indices
);
}
builder.BoundingSphere(_bounding_sphere);
}
Shape(const Program& prog, const ShapeBuilder& builder)
: make_shape(builder)
, shape_instr(make_shape.Instructions())
, shape_indices(make_shape.Indices())
, nva(4)
, vbos(nva+1)
{
vao.Bind();
typename ShapeBuilder::VertexAttribs vert_attr_info;
const GLchar* vert_attr_name[] = {
"Position",
"Normal",
"Tangent",
"TexCoord"
};
for(GLuint va=0; va!=nva; ++va)
{
const GLchar* name = vert_attr_name[va];
std::vector<GLfloat> data;
auto getter = vert_attr_info.VertexAttribGetter(data, name);
if(getter != nullptr)
try
{
vbos[va].Bind(Buffer::Target::Array);
GLuint npv = getter(make_shape, data);
Buffer::Data(Buffer::Target::Array, data);
VertexAttribArray attr(prog, name);
attr.Setup<GLfloat>(npv);
attr.Enable();
}
catch(Error& error)
{ }
}
vbos[nva].Bind(Buffer::Target::ElementArray);
Buffer::Data(Buffer::Target::ElementArray, shape_indices);
shape_indices.clear();
}
Shape(const Program& prog, const ShapeBuilder& builder)
: make_shape(builder)
, shape_instr(make_shape.Instructions(shapes::DrawMode::Default()))
, edge_instr(make_shape.Instructions(shapes::DrawMode::Edges()))
, shape_indices(make_shape.Indices(shapes::DrawMode::Default()))
, edge_indices(make_shape.Indices(shapes::DrawMode::Edges()))
, vbos(3)
{
// bind the VAO for the shape
vao.Bind();
typename ShapeBuilder::VertexAttribs vert_attr_info;
const GLuint nva = 3;
const GLchar* vert_attr_name[nva] = {
"Position",
"Normal",
"TexCoord"
};
for(GLuint va=0; va!=nva; ++va)
{
const GLchar* name = vert_attr_name[va];
std::vector<GLfloat> data;
auto getter = vert_attr_info.VertexAttribGetter(data, name);
if(getter != nullptr)
{
// bind the VBO for the vertex attribute
vbos[va].Bind(Buffer::Target::Array);
GLuint n_per_vertex = getter(make_shape, data);
// upload the data
Buffer::Data(Buffer::Target::Array, data);
// setup the vertex attribs array
VertexArrayAttrib attr(prog, name);
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
}
}
}
