diff options
| author | Brian Paul <brianp@vmware.com> | 2009-06-18 22:48:51 -0600 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2009-06-18 22:48:51 -0600 |
| commit | af5fff9c232d30a54b7a15c4a4c128f30afde751 (patch) | |
| tree | eebfb6516d50936b7a0c545f39a425b8e4ed3217 /src/gallium/auxiliary | |
| parent | 950171be3c8032d590fde3247bf12992aa9139c8 (diff) | |
draw: fix first provoking vertex mode for quads, quad strips and polygons
Diffstat (limited to 'src/gallium/auxiliary')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt_vcache_tmp.h | 73 |
1 files changed, 55 insertions, 18 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt_vcache_tmp.h b/src/gallium/auxiliary/draw/draw_pt_vcache_tmp.h index ec05bbeab4..62822a3d56 100644 --- a/src/gallium/auxiliary/draw/draw_pt_vcache_tmp.h +++ b/src/gallium/auxiliary/draw/draw_pt_vcache_tmp.h @@ -118,21 +118,39 @@ static void FUNC( struct draw_pt_front_end *frontend, case PIPE_PRIM_QUADS: for (i = 0; i+3 < count; i += 4) { - QUAD( vcache, - get_elt(elts, i + 0), - get_elt(elts, i + 1), - get_elt(elts, i + 2), - get_elt(elts, i + 3)); + if (flatfirst) { + QUAD( vcache, + get_elt(elts, i + 0), + get_elt(elts, i + 1), + get_elt(elts, i + 2), + get_elt(elts, i + 3) ); + } + else { + 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: for (i = 0; i+3 < count; i += 2) { - QUAD( vcache, - get_elt(elts, i + 2), - get_elt(elts, i + 0), - get_elt(elts, i + 1), - get_elt(elts, i + 3)); + if (flatfirst) { + QUAD( vcache, + get_elt(elts, i + 0), + get_elt(elts, i + 1), + get_elt(elts, i + 3), + get_elt(elts, i + 2) ); + } + else { + QUAD( vcache, + get_elt(elts, i + 2), + get_elt(elts, i + 0), + get_elt(elts, i + 1), + get_elt(elts, i + 3) ); + } } break; @@ -144,19 +162,38 @@ static void FUNC( struct draw_pt_front_end *frontend, const ushort edge_first = DRAW_PIPE_EDGE_FLAG_2; const ushort edge_middle = DRAW_PIPE_EDGE_FLAG_0; const ushort edge_last = DRAW_PIPE_EDGE_FLAG_1; + ushort edge_next, edge_finish; - flags = DRAW_PIPE_RESET_STIPPLE | edge_first | edge_middle; + if (flatfirst) { + flags = DRAW_PIPE_RESET_STIPPLE | edge_middle | edge_last; + edge_next = edge_last; + edge_finish = edge_first; + } + else { + flags = DRAW_PIPE_RESET_STIPPLE | edge_first | edge_middle; + edge_next = edge_middle; + edge_finish = edge_last; + } - for (i = 0; i+2 < count; i++, flags = edge_middle) { + for (i = 0; i+2 < count; i++, flags = edge_next) { if (i + 3 == count) - flags |= edge_last; + flags |= edge_finish; - TRIANGLE( vcache, - flags, - get_elt(elts, i + 1), - get_elt(elts, i + 2), - get_elt(elts, 0)); + if (flatfirst) { + TRIANGLE( vcache, + flags, + get_elt(elts, 0), + get_elt(elts, i + 1), + get_elt(elts, i + 2) ); + } + else { + TRIANGLE( vcache, + flags, + get_elt(elts, i + 1), + get_elt(elts, i + 2), + get_elt(elts, 0)); + } } } break; |