func uploadGeometry(mesh *geometry) { gl.GenVertexArrays(1, &mesh.glVao) gl.BindVertexArray(mesh.glVao) gl.GenBuffers(1, &mesh.glVertBuf) gl.BindBuffer(gl.ARRAY_BUFFER, mesh.glVertBuf) gl.EnableVertexAttribArray(progPosAttrLoc) gl.VertexAttribPointer(progPosAttrLoc, 3, gl.FLOAT, gl.FALSE, 0, gl.Ptr(nil)) gl.BufferData(gl.ARRAY_BUFFER, gl.Sizeiptr(4*len(mesh.glVerts)), gl.Ptr(&mesh.glVerts[0]), gl.STATIC_DRAW) gl.BindBuffer(gl.ARRAY_BUFFER, 0) gl.BindVertexArray(0) }
// Calls gl.BufferData() and yields the err returned by Util.LastError(), if any. func (_ GlTry) BufferData(target gl.Enum, size gl.Sizeiptr, data gl.Ptr, usage gl.Enum) (err error) { gl.BufferData(target, size, data, usage) err = Util.LastError("gl.BufferData()") return }