From: Ville Syrjälä <ville.syrj...@linux.intel.com> We can allow rendering flat shaded polygons using tri fans if we check the provoking vertex convention.
v2 (idr): Remove _EXT suffixes from GL_FIRST_VERTEX_CONVENTION. Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com> Reviewed-by: Ian Romanick <ian.d.roman...@intel.com> --- src/mesa/tnl_dd/t_dd_dmatmp.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/mesa/tnl_dd/t_dd_dmatmp.h b/src/mesa/tnl_dd/t_dd_dmatmp.h index 415c3df..be4b69c 100644 --- a/src/mesa/tnl_dd/t_dd_dmatmp.h +++ b/src/mesa/tnl_dd/t_dd_dmatmp.h @@ -315,7 +315,8 @@ static void TAG(render_poly_verts)(struct gl_context *ctx, } FLUSH(); - } else if (ctx->Light.ShadeModel == GL_SMOOTH) { + } else if (ctx->Light.ShadeModel == GL_SMOOTH || + ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION) { TAG(render_tri_fan_verts)( ctx, start, count, flags ); } else { unreachable("Cannot draw primitive"); @@ -455,7 +456,8 @@ static bool TAG(validate_render)(struct gl_context *ctx, ok = true; break; case GL_POLYGON: - ok = (HAVE_POLYGONS) || ctx->Light.ShadeModel == GL_SMOOTH; + ok = (HAVE_POLYGONS) || ctx->Light.ShadeModel == GL_SMOOTH || + ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION; break; case GL_QUAD_STRIP: ok = VB->Elts || -- 2.1.0 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev