diff --git a/src/mesa/drivers/dri/r300/r300_vertexprog.c b/src/mesa/drivers/dri/r300/r300_vertexprog.c
index 5141441..0894160 100644
--- a/src/mesa/drivers/dri/r300/r300_vertexprog.c
+++ b/src/mesa/drivers/dri/r300/r300_vertexprog.c
@@ -1093,6 +1093,13 @@ static struct r300_vertex_program *build_program(struct r300_vertex_program_key
 {
 	struct r300_vertex_program *vp;
 	struct gl_program tempBase = mesa_vp->Base;
+
+	fprintf(stderr, "Vertex program (from MESA)\n");
+	fprintf(stderr, "----String---\n");
+	if(mesa_vp->Base.String)fprintf(stderr, "%s\n", mesa_vp->Base.String);
+	fprintf(stderr, "-------------\n");
+	_mesa_print_program(&mesa_vp->Base);
+	fprintf(stderr, "-------------\n");
 	
 	tempBase.Instructions = _mesa_calloc(mesa_vp->Base.NumInstructions*sizeof(struct prog_instruction));
 	
@@ -1114,6 +1121,12 @@ static struct r300_vertex_program *build_program(struct r300_vertex_program_key
 
 	vp->num_temporaries=mesa_vp->Base.NumTemporaries;
 
+	fprintf(stderr, "Vertex program (changed by R300)\n");
+	fprintf(stderr, "-------------\n");
+	_mesa_print_program(&tempBase);
+	fprintf(stderr, "-------------\n");
+
+
 	r300_translate_vertex_shader(vp, tempBase.Instructions);
 	_mesa_free(tempBase.Instructions);
 	return vp;