diff options
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt_fetch.c | 5 | ||||
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt_vcache_tmp.h | 123 |
2 files changed, 72 insertions, 56 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch.c b/src/gallium/auxiliary/draw/draw_pt_fetch.c index 07f4c991642..b8fd3aa1d86 100644 --- a/src/gallium/auxiliary/draw/draw_pt_fetch.c +++ b/src/gallium/auxiliary/draw/draw_pt_fetch.c @@ -114,7 +114,10 @@ void draw_pt_fetch_prepare( struct pt_fetch *fetch, fetch->translate = translate_cache_find(fetch->cache, &key); { - static struct vertex_header vh = { 0, 1, 0, 0xffff }; + static struct vertex_header vh = { 0, + 1, /* edgeflag */ + 0, + 0xffff }; fetch->translate->set_buffer(fetch->translate, draw->pt.nr_vertex_buffers, &vh, diff --git a/src/gallium/auxiliary/draw/draw_pt_vcache_tmp.h b/src/gallium/auxiliary/draw/draw_pt_vcache_tmp.h index ec05bbeab40..f2334a84f63 100644 --- a/src/gallium/auxiliary/draw/draw_pt_vcache_tmp.h +++ b/src/gallium/auxiliary/draw/draw_pt_vcache_tmp.h @@ -7,15 +7,18 @@ static void FUNC( struct draw_pt_front_end *frontend, { struct vcache_frontend *vcache = (struct vcache_frontend *)frontend; struct draw_context *draw = vcache->draw; - - boolean flatfirst = (draw->rasterizer->flatshade && - draw->rasterizer->flatshade_first); unsigned i; ushort flags; if (0) debug_printf("%s %d\n", __FUNCTION__, count); - + /* Note that no adjustment is made here for flatshade provoking + * vertex. This was previously the case, but was incorrect as the + * same logic would be applied twice both here & in the pipeline + * code or driver. The rule is now that we just preserve the + * original order in this code, and leave identification of the PV + * to the pipeline and driver. + */ switch (vcache->input_prim) { case PIPE_PRIM_POINTS: for (i = 0; i < count; i ++) { @@ -72,45 +75,23 @@ static void FUNC( struct draw_pt_front_end *frontend, break; case PIPE_PRIM_TRIANGLE_STRIP: - if (flatfirst) { - for (i = 0; i+2 < count; i++) { - TRIANGLE( vcache, - DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL, - get_elt(elts, i + 0), - get_elt(elts, i + 1 + (i&1)), - get_elt(elts, i + 2 - (i&1))); - } - } - else { - for (i = 0; i+2 < count; i++) { - TRIANGLE( vcache, - DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL, - get_elt(elts, i + 0 + (i&1)), - get_elt(elts, i + 1 - (i&1)), - get_elt(elts, i + 2 )); - } + for (i = 0; i+2 < count; i++) { + TRIANGLE( vcache, + DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL, + get_elt(elts, i + 0 + (i&1)), + get_elt(elts, i + 1 - (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++) { - TRIANGLE( vcache, - DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL, - get_elt(elts, i + 1), - get_elt(elts, i + 2), - get_elt(elts, 0 )); - } - } - else { - for (i = 0; i+2 < count; i++) { - TRIANGLE( vcache, - DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL, - get_elt(elts, 0), - get_elt(elts, i + 1), - get_elt(elts, i + 2 )); - } + for (i = 0; i+2 < count; i++) { + TRIANGLE( vcache, + DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL, + get_elt(elts, i + 1), + get_elt(elts, i + 2), + get_elt(elts, 0 )); } } break; @@ -138,26 +119,58 @@ static void FUNC( struct draw_pt_front_end *frontend, case PIPE_PRIM_POLYGON: { + boolean flatfirst = (draw->rasterizer->flatshade && + draw->rasterizer->flatshade_first); + /* These bitflags look a little odd because we submit the * vertices as (1,2,0) to satisfy flatshade requirements. + * + * Polygon is defined has having vertex 0 be the provoking + * flatshade vertex and all known API's match this usage. + * However, the PV's for the triangles we emit from this + * decomposition vary according to the API, and hence we have + * to choose between two ways of emitting the triangles. */ - 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; - - flags = DRAW_PIPE_RESET_STIPPLE | edge_first | edge_middle; - - for (i = 0; i+2 < count; i++, flags = edge_middle) { - - if (i + 3 == count) - flags |= edge_last; - - TRIANGLE( vcache, - flags, - get_elt(elts, i + 1), - get_elt(elts, i + 2), - get_elt(elts, 0)); - } + if (flatfirst) { + const ushort edge_first = DRAW_PIPE_EDGE_FLAG_0; + const ushort edge_middle = DRAW_PIPE_EDGE_FLAG_1; + const ushort edge_last = DRAW_PIPE_EDGE_FLAG_2; + + flags = DRAW_PIPE_RESET_STIPPLE | edge_first | edge_middle; + + for (i = 0; i+2 < count; i++, flags = edge_middle) { + + if (i + 3 == count) + flags |= edge_last; + + /* PV is first vertex */ + TRIANGLE( vcache, + flags, + get_elt(elts, 0), + get_elt(elts, i + 1), + get_elt(elts, i + 2)); + } + } + else { + 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; + + flags = DRAW_PIPE_RESET_STIPPLE | edge_first | edge_middle; + + for (i = 0; i+2 < count; i++, flags = edge_middle) { + + if (i + 3 == count) + flags |= edge_last; + + /* PV is third vertex */ + TRIANGLE( vcache, + flags, + get_elt(elts, i + 1), + get_elt(elts, i + 2), + get_elt(elts, 0)); + } + } } break; |