From b15b4581d15684d59e1fc4d7cad72ece4dd9fcb0 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Mon, 23 Mar 2015 14:47:18 +0200 Subject: [PATCH] t_dd_dmatmp: Allow flat shaded polygons with tri fans MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Ian Romanick --- 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 181cf67..7d03b02 100644 --- a/src/mesa/tnl_dd/t_dd_dmatmp.h +++ b/src/mesa/tnl_dd/t_dd_dmatmp.h @@ -316,7 +316,8 @@ 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; validate_render should have " @@ -458,7 +459,8 @@ 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 || -- 2.7.4