[Piglit] [PATCH v2 1/2] shader_runner: Add support for "polygon mode"

[Lyude]

This adds support for the "polygon mode" command in shader_runner, which
allows us to change the current GL_POLYGON_MODE at runtime for drawing
the front and/or back of prims using glPolygonMode().

Signed-off-by: Lyude <lyude at redhat.com>
---
 tests/shaders/shader_runner.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/tests/shaders/shader_runner.c b/tests/shaders/shader_runner.c
index b487e8a..c57e457 100644
--- a/tests/shaders/shader_runner.c
+++ b/tests/shaders/shader_runner.c
@@ -3335,7 +3335,21 @@ piglit_display(void)
 							expected))
 				result = PIGLIT_FAIL;
 
-		} else if (parse_str(line, "probe all rgba ", &rest)) {
+		} else if (parse_str(rest, "polygon mode ", &rest)) {
+                        GLenum face, mode;
+
+                        REQUIRE(parse_enum_gl(rest, &face, &rest) &&
+                                parse_enum_gl(rest, &mode, &rest),
+                                "Polygon mode command not understood at %s\n",
+                                rest);
+
+                        glPolygonMode(face, mode);
+
+                        if (!piglit_check_gl_error(GL_NO_ERROR)) {
+                                fprintf(stderr, "glPolygonMode error\n");
+                                piglit_report_result(PIGLIT_FAIL);
+                        }
+                } else if (parse_str(line, "probe all rgba ", &rest)) {
 			parse_floats(rest, c, 4, NULL);
 			if (result != PIGLIT_FAIL &&
 			    !piglit_probe_rect_rgba(0, 0, read_width,
-- 
2.9.3