-static void vcache_run( struct draw_pt_front_end *frontend,
- pt_elt_func get_elt,
- const void *elts,
- unsigned count )
-{
- struct vcache_frontend *vcache = (struct vcache_frontend *)frontend;
- struct draw_context *draw = vcache->draw;
-
- boolean unfilled = (draw->rasterizer->fill_cw != PIPE_POLYGON_MODE_FILL ||
- draw->rasterizer->fill_ccw != PIPE_POLYGON_MODE_FILL);
-
- boolean flatfirst = (draw->rasterizer->flatshade &&
- draw->rasterizer->flatshade_first);
- unsigned i;
-
-// debug_printf("%s (%d) %d/%d\n", __FUNCTION__, draw->prim, start, count );
-
- switch (vcache->input_prim) {
- case PIPE_PRIM_POINTS:
- for (i = 0; i < count; i ++) {
- vcache_point( vcache,
- get_elt(elts, i + 0) );
- }
- break;
-
- case PIPE_PRIM_LINES:
- for (i = 0; i+1 < count; i += 2) {
- vcache_line( vcache,
- TRUE,
- get_elt(elts, i + 0),
- get_elt(elts, i + 1));
- }
- break;
-
- case PIPE_PRIM_LINE_LOOP:
- if (count >= 2) {
- for (i = 1; i < count; i++) {
- vcache_line( vcache,
- i == 1, /* XXX: only if vb not split */
- get_elt(elts, i - 1),
- get_elt(elts, i ));
- }
-
- vcache_line( vcache,
- 0,
- get_elt(elts, count - 1),
- get_elt(elts, 0 ));
- }
- break;
-
- case PIPE_PRIM_LINE_STRIP:
- for (i = 1; i < count; i++) {
- vcache_line( vcache,
- i == 1,
- get_elt(elts, i - 1),
- get_elt(elts, i ));
- }
- break;
-
- case PIPE_PRIM_TRIANGLES:
- if (unfilled) {
- for (i = 0; i+2 < count; i += 3) {
- vcache_ef_triangle( vcache,
- 1,
- ~0,
- get_elt(elts, i + 0),
- get_elt(elts, i + 1),
- get_elt(elts, i + 2 ));
- }
- }
- else {
- for (i = 0; i+2 < count; i += 3) {
- vcache_triangle( vcache,
- get_elt(elts, i + 0),
- get_elt(elts, i + 1),
- get_elt(elts, i + 2 ));
- }
- }
- break;
-
- case PIPE_PRIM_TRIANGLE_STRIP:
- if (flatfirst) {
- for (i = 0; i+2 < count; i++) {
- if (i & 1) {
- vcache_triangle( vcache,
- get_elt(elts, i + 0),
- get_elt(elts, i + 2),
- get_elt(elts, i + 1 ));
- }
- else {
- vcache_triangle( vcache,
- get_elt(elts, i + 0),
- get_elt(elts, i + 1),
- get_elt(elts, i + 2 ));
- }
- }
- }
- else {
- for (i = 0; i+2 < count; i++) {
- if (i & 1) {
- vcache_triangle( vcache,
- get_elt(elts, i + 1),
- get_elt(elts, i + 0),
- get_elt(elts, i + 2 ));
- }
- else {
- vcache_triangle( vcache,
- get_elt(elts, i + 0),
- get_elt(elts, i + 1),
- get_elt(elts, i + 2 ));
- }
- }
- }
- break;
-
- case PIPE_PRIM_TRIANGLE_FAN:
- if (count >= 3) {
- if (flatfirst) {
- for (i = 0; i+2 < count; i++) {
- vcache_triangle( vcache,
- get_elt(elts, i + 1),
- get_elt(elts, i + 2),
- get_elt(elts, 0 ));
- }
- }
- else {
- for (i = 0; i+2 < count; i++) {
- vcache_triangle( vcache,
- get_elt(elts, 0),
- get_elt(elts, i + 1),
- get_elt(elts, i + 2 ));
- }
- }
- }
- break;
-
-
- case PIPE_PRIM_QUADS:
- if (unfilled) {
- for (i = 0; i+3 < count; i += 4) {
- vcache_ef_quad( vcache,
- get_elt(elts, i + 0),
- get_elt(elts, i + 1),
- get_elt(elts, i + 2),
- get_elt(elts, i + 3));
- }
- }
- else {
- for (i = 0; i+3 < count; i += 4) {
- vcache_quad( vcache,
- get_elt(elts, i + 0),
- get_elt(elts, i + 1),
- get_elt(elts, i + 2),
- get_elt(elts, i + 3));
- }
- }
- break;
-
- case PIPE_PRIM_QUAD_STRIP:
- if (unfilled) {
- for (i = 0; i+3 < count; i += 2) {
- vcache_ef_quad( vcache,
- get_elt(elts, i + 2),
- get_elt(elts, i + 0),
- get_elt(elts, i + 1),
- get_elt(elts, i + 3));
- }
- }
- else {
- for (i = 0; i+3 < count; i += 2) {
- vcache_quad( vcache,
- get_elt(elts, i + 2),
- get_elt(elts, i + 0),
- get_elt(elts, i + 1),
- get_elt(elts, i + 3));
- }
- }
- break;
-
- case PIPE_PRIM_POLYGON:
- if (unfilled) {
- /* These bitflags look a little odd because we submit the
- * vertices as (1,2,0) to satisfy flatshade requirements.
- */
- const unsigned edge_first = (1<<2);
- const unsigned edge_middle = (1<<0);
- const unsigned edge_last = (1<<1);
-
- for (i = 0; i+2 < count; i++) {
- unsigned ef_mask = edge_middle;
-
- if (i == 0)
- ef_mask |= edge_first;
-
- if (i + 3 == count)
- ef_mask |= edge_last;
-
- vcache_ef_triangle( vcache,
- i == 0,
- ef_mask,
- get_elt(elts, i + 1),
- get_elt(elts, i + 2),
- get_elt(elts, 0));
- }
- }
- else {
- for (i = 0; i+2 < count; i++) {
- vcache_triangle( vcache,
- get_elt(elts, i + 1),
- get_elt(elts, i + 2),
- get_elt(elts, 0));
- }
- }
- break;
-
- default:
- assert(0);
- break;
- }
-
- vcache_flush( vcache );
-}