+ /* vertex elements state */
+ memset(&r->velems[0], 0, sizeof(r->velems[0]) * 3);
+ for (i = 0; i < 3; i++) {
+ r->velems[i].src_offset = i * 4 * sizeof(float);
+ r->velems[i].instance_divisor = 0;
+ r->velems[i].vertex_buffer_index = 0;
+ r->velems[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ }