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
