Added a NoFluids render mode primitive, and documented it.

docs/config.rst

@@ -618,6 +618,9 @@ Exposed
     
     mode
         when set to 1, inverts the render mode, only drawing unexposed blocks. Default: 0
+        
+NoFluids
+    Don't render fluid blocks (water, lava).
 
 EdgeLines
     Draw edge lines on the back side of blocks, to help distinguish them from

overviewer_core/rendermodes.py

@@ -68,6 +68,9 @@ class Exposed(RenderPrimitive):
     options = {
         "mode": ("0 = exposed blocks only, 1 = unexposed blocks only", 0),
     }
+    
+class NoFluids(RenderPrimitive):
+    name = "no-fluids"
 
 class EdgeLines(RenderPrimitive):
     name = "edge-lines"

overviewer_core/src/primitives/no-fluids.c

@@ -0,0 +1,44 @@
+/* 
+ * This file is part of the Minecraft Overviewer.
+ *
+ * Minecraft Overviewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Minecraft Overviewer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+ * Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with the Overviewer.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "../overviewer.h"
+
+typedef struct {
+} PrimitiveNoFluids;
+
+static int
+no_fluids_start(void *data, RenderState *state, PyObject *support) {
+    PrimitiveNoFluids *self = (PrimitiveNoFluids *)data;
+        
+    return 0;
+}
+
+static int
+no_fluids_hidden(void *data, RenderState *state, int x, int y, int z) {
+    PrimitiveNoFluids *self = (PrimitiveNoFluids *)data;
+    
+    return !block_has_property(state->block, FLUID);
+}
+
+RenderPrimitiveInterface primitive_no_fluids = {
+    "no-fluids", sizeof(PrimitiveNoFluids),
+    no_fluids_start,
+    NULL,
+    NULL,
+    no_fluids_hidden,
+    NULL,
+};