diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pt_decompose.h')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt_decompose.h | 65 |
1 files changed, 47 insertions, 18 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt_decompose.h b/src/gallium/auxiliary/draw/draw_pt_decompose.h index 3fb0695687..4ca5b52020 100644 --- a/src/gallium/auxiliary/draw/draw_pt_decompose.h +++ b/src/gallium/auxiliary/draw/draw_pt_decompose.h @@ -47,10 +47,19 @@ static void FUNC( ARGS, case PIPE_PRIM_TRIANGLES: for (i = 0; i+2 < count; i += 3) { - TRIANGLE( DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL, - (i + 0), - (i + 1), - (i + 2 )); + if (flatfirst) { + /* put provoking vertex in last pos for clipper */ + TRIANGLE( DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL, + (i + 1), + (i + 2), + (i + 0 )); + } + else { + TRIANGLE( DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL, + (i + 0), + (i + 1), + (i + 2 )); + } } break; @@ -58,9 +67,9 @@ static void FUNC( ARGS, if (flatfirst) { for (i = 0; i+2 < count; i++) { TRIANGLE( DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL, - (i + 0), (i + 1 + (i&1)), - (i + 2 - (i&1))); + (i + 2 - (i&1)), + (i + 0) ); } } else { @@ -78,9 +87,9 @@ static void FUNC( ARGS, if (flatfirst) { for (i = 0; i+2 < count; i++) { TRIANGLE( DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL, - (i + 1), (i + 2), - (0 )); + 0, + (i + 1) ); } } else { @@ -96,20 +105,40 @@ static void FUNC( ARGS, case PIPE_PRIM_QUADS: - for (i = 0; i+3 < count; i += 4) { - QUAD( (i + 0), - (i + 1), - (i + 2), - (i + 3)); + if (flatfirst) { + for (i = 0; i+3 < count; i += 4) { + QUAD( (i + 1), + (i + 2), + (i + 3), + (i + 0) ); + } + } + else { + for (i = 0; i+3 < count; i += 4) { + QUAD( (i + 0), + (i + 1), + (i + 2), + (i + 3)); + } } break; case PIPE_PRIM_QUAD_STRIP: - for (i = 0; i+3 < count; i += 2) { - QUAD( (i + 2), - (i + 0), - (i + 1), - (i + 3)); + if (flatfirst) { + for (i = 0; i+3 < count; i += 2) { + QUAD( (i + 1), + (i + 3), + (i + 2), + (i + 0) ); + } + } + else { + for (i = 0; i+3 < count; i += 2) { + QUAD( (i + 2), + (i + 0), + (i + 1), + (i + 3)); + } } break; |