From 8a94d15fbaf46caf1a25034acbbdbed33f46f911 Mon Sep 17 00:00:00 2001 From: Zack Rusin Date: Fri, 2 Aug 2013 01:50:05 -0400 Subject: [PATCH] draw: fix front face injection Inject front face only if the fragment shader uses it and propagate through all channels because otherwise we'll need to figure out the exact swizzle that the fs expects and it's just simpler to make sure all the components within the front face register are correctly set. Signed-off-by: Zack Rusin Reviewed-by: Roland Scheidegger Reviewed-by: Jose Fonseca Reviewed-by: Brian Paul --- src/gallium/auxiliary/draw/draw_pipe_unfilled.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) diff --git a/src/gallium/auxiliary/draw/draw_pipe_unfilled.c b/src/gallium/auxiliary/draw/draw_pipe_unfilled.c index d8a603f..c6ee95c 100644 --- a/src/gallium/auxiliary/draw/draw_pipe_unfilled.c +++ b/src/gallium/auxiliary/draw/draw_pipe_unfilled.c @@ -37,6 +37,7 @@ #include "pipe/p_defines.h" #include "draw_private.h" #include "draw_pipe.h" +#include "draw_fs.h" struct unfilled_stage { @@ -67,18 +68,20 @@ inject_front_face_info(struct draw_stage *stage, (stage->draw->rasterizer->front_ccw && ccw) || (!stage->draw->rasterizer->front_ccw && !ccw)); unsigned slot = unfilled->face_slot; - struct vertex_header *v0 = header->v[0]; - struct vertex_header *v1 = header->v[1]; - struct vertex_header *v2 = header->v[2]; + unsigned i; /* In case the backend doesn't care about it */ if (slot < 0) { return; } - v0->data[slot][0] = is_front_face; - v1->data[slot][0] = is_front_face; - v2->data[slot][0] = is_front_face; + for (i = 0; i < 3; ++i) { + struct vertex_header *v = header->v[i]; + v->data[slot][0] = is_front_face; + v->data[slot][1] = is_front_face; + v->data[slot][2] = is_front_face; + v->data[slot][3] = is_front_face; + } } @@ -231,9 +234,12 @@ draw_unfilled_prepare_outputs( struct draw_context *draw, { struct unfilled_stage *unfilled = unfilled_stage(stage); const struct pipe_rasterizer_state *rast = draw ? draw->rasterizer : 0; - if (rast && - (rast->fill_front != PIPE_POLYGON_MODE_FILL || - rast->fill_back != PIPE_POLYGON_MODE_FILL)) { + boolean is_unfilled = (rast && + (rast->fill_front != PIPE_POLYGON_MODE_FILL || + rast->fill_back != PIPE_POLYGON_MODE_FILL)); + const struct draw_fragment_shader *fs = draw->fs.fragment_shader; + + if (is_unfilled && fs && fs->info.uses_frontface) { unfilled->face_slot = draw_alloc_extra_vertex_attrib( stage->draw, TGSI_SEMANTIC_FACE, 0); } else { -- 2.7.4