diff --git a/src/agg/process_debug_symbolizer.cpp b/src/agg/process_debug_symbolizer.cpp
index 9f0363921..1279c8cf9 100644
--- a/src/agg/process_debug_symbolizer.cpp
+++ b/src/agg/process_debug_symbolizer.cpp
@@ -214,6 +214,14 @@ void agg_renderer<T0,T1>::process(debug_symbolizer const& sym,
 
     debug_symbolizer_mode_enum mode = get<debug_symbolizer_mode_enum>(sym, keys::mode, feature, common_.vars_, DEBUG_SYM_MODE_COLLISION);
 
+    ras_ptr->reset();
+    if (gamma_method_ != GAMMA_POWER || gamma_ != 1.0)
+    {
+        ras_ptr->gamma(agg::gamma_power());
+        gamma_method_ = GAMMA_POWER;
+        gamma_ = 1.0;
+    }
+
     if (mode == DEBUG_SYM_MODE_RINGS)
     {
         RingRenderer<buffer_type> renderer(*ras_ptr,*current_buffer_,common_.t_,prj_trans);
diff --git a/src/agg/process_dot_symbolizer.cpp b/src/agg/process_dot_symbolizer.cpp
index 8e19aa997..35cb861e7 100644
--- a/src/agg/process_dot_symbolizer.cpp
+++ b/src/agg/process_dot_symbolizer.cpp
@@ -111,6 +111,12 @@ void agg_renderer<T0,T1>::process(dot_symbolizer const& sym,
     double opacity = get<double>(sym, keys::opacity, feature, common_.vars_, 1.0);
     color const& fill = get<mapnik::color>(sym, keys::fill, feature, common_.vars_, mapnik::color(128,128,128));
     ras_ptr->reset();
+    if (gamma_method_ != GAMMA_POWER || gamma_ != 1.0)
+    {
+        ras_ptr->gamma(agg::gamma_power());
+        gamma_method_ = GAMMA_POWER;
+        gamma_ = 1.0;
+    }
     agg::rendering_buffer buf(current_buffer_->bytes(),current_buffer_->width(),current_buffer_->height(),current_buffer_->row_size());
     using blender_type = agg::comp_op_adaptor_rgba_pre<agg::rgba8, agg::order_rgba>;
     using pixfmt_comp_type = agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer>;
diff --git a/src/agg/process_line_pattern_symbolizer.cpp b/src/agg/process_line_pattern_symbolizer.cpp
index b5df95380..735363873 100644
--- a/src/agg/process_line_pattern_symbolizer.cpp
+++ b/src/agg/process_line_pattern_symbolizer.cpp
@@ -237,6 +237,13 @@ void  agg_renderer<T0,T1>::process(line_pattern_symbolizer const& sym,
 
     std::string filename = get<std::string, keys::file>(sym, feature, common_.vars_);
     if (filename.empty()) return;
+    ras_ptr->reset();
+    if (gamma_method_ != GAMMA_POWER || gamma_ != 1.0)
+    {
+        ras_ptr->gamma(agg::gamma_power());
+        gamma_method_ = GAMMA_POWER;
+        gamma_ = 1.0;
+    }
     std::shared_ptr<mapnik::marker const> marker = marker_cache::instance().find(filename, true);
     agg_renderer_process_visitor_l<buffer_type> visitor(common_,
                                          pixmap_,