nv30: activate fp texture units when needed, to get texturing

src/gallium/drivers/nv30/nv30_state_emit.c

@@ -71,6 +71,10 @@ nv30_state_emit(struct nv30_context *nv30)
 
 	state->dirty = 0;
 
+	/* FIXME/TODO: Try to find a way to reemit only when changed */
+	BEGIN_RING(rankine, NV34TCL_TX_UNITS_ENABLE, 1);
+	OUT_RING(state->fp_samplers);
+
 	so_emit_reloc_markers(nv30->nvws, state->hw[NV30_STATE_FB]);
 	for (i = 0, samplers = state->fp_samplers; i < 16 && samplers; i++) {
 		if (!(samplers & (1 << i)))