+static unsigned
+nv20__emit_format(struct nv20_context *nv20, enum attrib_emit type, int hwattr)
+{
+ uint32_t hwfmt = 0;
+ unsigned fields;
+
+ switch (type) {
+ case EMIT_OMIT:
+ hwfmt = nv20__vtxhwformat(0, 0, 2);
+ fields = 0;
+ break;
+ case EMIT_1F:
+ hwfmt = nv20__vtxhwformat(4, 1, 2);
+ fields = 1;
+ break;
+ case EMIT_2F:
+ hwfmt = nv20__vtxhwformat(8, 2, 2);
+ fields = 2;
+ break;
+ case EMIT_3F:
+ hwfmt = nv20__vtxhwformat(12, 3, 2);
+ fields = 3;
+ break;
+ case EMIT_4F:
+ hwfmt = nv20__vtxhwformat(16, 4, 2);
+ fields = 4;
+ break;
+ default:
+ NOUVEAU_ERR("unhandled attrib_emit %d\n", type);
+ return 0;
+ }
+
+ BEGIN_RING(kelvin, NV20TCL_VTXFMT(hwattr), 1);
+ OUT_RING(hwfmt);
+ return fields;
+}
+
+static unsigned
+nv20__emit_vertex_array_format(struct nv20_context *nv20)
+{
+ struct vertex_info *vinfo = &nv20->vertex_info;
+ int hwattr = NV20TCL_VTXFMT__SIZE;
+ int attr = 0;
+ unsigned nr_fields = 0;
+
+ while (hwattr-- > 0) {
+ if (vinfo->hwfmt[0] & (1 << hwattr)) {
+ nr_fields += nv20__emit_format(nv20,
+ vinfo->attrib[attr].emit, hwattr);
+ attr++;
+ } else
+ nv20__emit_format(nv20, EMIT_OMIT, hwattr);
+ }
+
+ return nr_fields;
+}
+
+static void
+nv20__draw_mbuffer(struct nv20_vbuf_render *nv20_render,
+ const ushort *indices,
+ uint nr_indices)
+{
+ struct nv20_context *nv20 = nv20_render->nv20;
+ struct vertex_info *vinfo = &nv20->vertex_info;
+ unsigned nr_fields;
+ int max_push;
+ ubyte *data = nv20_render->mbuffer;
+ int vsz = 4 * vinfo->size;
+
+ nr_fields = nv20__emit_vertex_array_format(nv20);
+
+ BEGIN_RING(kelvin, NV20TCL_VERTEX_BEGIN_END, 1);
+ OUT_RING(nv20_render->hwprim);
+
+ max_push = 1200 / nr_fields;
+ while (nr_indices) {
+ int i;
+ int push = MIN2(nr_indices, max_push);
+
+ BEGIN_RING_NI(kelvin, NV20TCL_VERTEX_DATA, push * nr_fields);
+ for (i = 0; i < push; i++) {
+ /* XXX: fixme to handle other than floats? */
+ int f = nr_fields;
+ float *attrv = (float*)&data[indices[i] * vsz];
+ while (f-- > 0)
+ OUT_RINGf(*attrv++);
+ }
+
+ nr_indices -= push;
+ indices += push;
+ }
+
+ BEGIN_RING(kelvin, NV20TCL_VERTEX_BEGIN_END, 1);
+ OUT_RING(NV20TCL_VERTEX_BEGIN_END_STOP);
+}
+
+static void
+nv20__draw_pbuffer(struct nv20_vbuf_render *nv20_render,