func DrawGeometry(geo *Geometry, vertexAttribute gl.AttributeLocation, vao gl.VertexArrayObject) {
gl.BindBuffer(gl.ARRAY_BUFFER, geo.VertexBuffer)
gl.BindVertexArray(vao)
gl.VertexAttribPointer(vertexAttribute, 3, gl.FLOAT, gl.FALSE, 12, nil)
gl.EnableVertexAttribArray(vertexAttribute)
for _, elem := range geo.Elements {
gl.BindBuffer(gl.ELEMENT_ARRAY_BUFFER, elem.Buffer)
gl.DrawElements(elem.DrawType, gl.Sizei(elem.Count), gl.UNSIGNED_SHORT, nil)
PanicOnError()
}
gl.DisableVertexAttribArray(vertexAttribute)
}
func (r *Receiver) DrawGeometry(geo *gtk.Geometry, vertexAttribute gl.AttributeLocation, lines bool) {
gl.BindBuffer(gl.ARRAY_BUFFER, geo.VertexBuffer)
gl.BindVertexArray(r.Data.Vao)
gl.VertexAttribPointer(vertexAttribute, 3, gl.FLOAT, gl.FALSE, 12, nil)
gl.EnableVertexAttribArray(vertexAttribute)
for _, elem := range geo.Elements {
if lines == (elem.DrawType == gl.LINES) {
gl.BindBuffer(gl.ELEMENT_ARRAY_BUFFER, elem.Buffer)
gl.DrawElements(elem.DrawType, gl.Sizei(elem.Count), gl.UNSIGNED_SHORT, nil)
gtk.PanicOnError()
}
}
gl.DisableVertexAttribArray(vertexAttribute)
}
func BindArrayData(buffer gl.Buffer, data interface{}) {
ptr, size := ArrayPtr(data)
gl.BindBuffer(gl.ARRAY_BUFFER, buffer)
gl.BufferData(gl.ARRAY_BUFFER, size, ptr, gl.STATIC_DRAW)
}