Adding some comments.

src/mesa/drivers/dri/r300/Makefile

@@ -38,7 +38,6 @@ DRIVER_SOURCES = \
 		 r300_texprog.c \
 		 r300_vertexprog.c \
 		 r300_shader.c \
-		 r300_ffp.c \
 		 r300_maos.c \
 		 \
 		 r200_context.c \

src/mesa/drivers/dri/r300/r300_ioctl.c

@@ -60,6 +60,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #define CLEARBUFFER_DEPTH	0x2
 #define CLEARBUFFER_STENCIL	0x4
 
+/* TODO: Fix this so that white vertical lines no longer appear. */
 static void r300ClearBuffer(r300ContextPtr r300, int flags, int buffer)
 {
 	GLcontext* ctx = r300->radeon.glCtx;

src/mesa/drivers/dri/r300/r300_vertexprog.c

@@ -766,7 +766,9 @@ void translate_vertex_shader(struct r300_vertex_program *vp)
 			
 		case VP_OPCODE_XPD:
 			/* mul r0, r1.yzxw, r2.zxyw
-			   mad r0, -r2.yzxw, r1.zxyw, r0 */
+			   mad r0, -r2.yzxw, r1.zxyw, r0
+			   NOTE: might need MAD_2
+			 */
 			
 			o_inst->op=MAKE_VSF_OP(R300_VPI_OUT_OP_MAD, u_temp_i,
 					t_dst_mask(vpi->DstReg.WriteMask), VSF_OUT_CLASS_TMP);