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t_dd_dmatmp: Allow flat shaded polygons with tri fans

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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.syrjala@linux.intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Ville Syrjälä
2015-03-23 14:47:18 +02:00
committed by Ian Romanick
parent 5ca00e0b8d
commit b15b4581d1
1 changed files with 4 additions and 2 deletions
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src/mesa/tnl_dd/t_dd_dmatmp.h
+4 -2
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@@ -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 ||