feature: Test for extensions related to occulsion query

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>

src/vrend_renderer.c

@@ -128,6 +128,8 @@ enum features_id
    feat_nv_conditional_render,
    feat_nv_prim_restart,
    feat_polygon_offset_clamp,
+   feat_occlusion_query,
+   feat_occlusion_query_boolean,
    feat_qbo,
    feat_robust_buffer_access,
    feat_sample_mask,
@@ -214,6 +216,8 @@ static const  struct {
    FEAT(nv_conditional_render, UNAVAIL, UNAVAIL,  "GL_NV_conditional_render" ),
    FEAT(nv_prim_restart, UNAVAIL, UNAVAIL,  "GL_NV_primitive_restart" ),
    FEAT(polygon_offset_clamp, 46, UNAVAIL,  "GL_ARB_polygon_offset_clamp", "GL_EXT_polygon_offset_clamp"),
+   FEAT(occlusion_query, 15, UNAVAIL, "GL_ARB_occlusion_query"),
+   FEAT(occlusion_query_boolean, 33, 30, "GL_EXT_occlusion_query_boolean", "GL_ARB_occlusion_query2"),
    FEAT(qbo, 44, UNAVAIL, "GL_ARB_query_buffer_object" ),
    FEAT(robust_buffer_access, 43, UNAVAIL,  "GL_ARB_robust_buffer_access_behavior", "GL_KHR_robust_buffer_access_behavior" ),
    FEAT(sample_mask, 32, 31,  "GL_ARB_texture_multisample" ),