Grass rendering behing water fix

src/content/Content.cpp

@@ -18,22 +18,27 @@ void ContentBuilder::add(Block* def) {
 
 Content* ContentBuilder::build() {
     vector<Block*> blockDefsIndices;
+    DrawGroups* groups = new DrawGroups;
     for (const string& name : blockIds) {
         Block* def = blockDefs[name];
         def->id = blockDefsIndices.size();
         blockDefsIndices.push_back(def);
+        if (groups->find(def->drawGroup) == groups->end()) {
+            groups->insert(def->drawGroup);
+        }
     }
     ContentIndices* indices = new ContentIndices(blockDefsIndices);
-    return new Content(indices, blockDefs);
+    return new Content(indices, groups, blockDefs);
 }
 
 ContentIndices::ContentIndices(vector<Block*> blockDefs)
                : blockDefs(blockDefs) {
 }
 
-Content::Content(ContentIndices* indices,
+Content::Content(ContentIndices* indices, DrawGroups* drawGroups,
                  unordered_map<string, Block*> blockDefs)
         : blockDefs(blockDefs),
+          drawGroups(drawGroups),
           indices(indices) {
 }
 

src/content/Content.h

@@ -4,8 +4,11 @@
 #include <string>
 #include <vector>
 #include <unordered_map>
+#include <set>
 #include "../typedefs.h"
 
+typedef std::set<unsigned char> DrawGroups;
+
 class Block;
 class Content;
 
@@ -46,8 +49,9 @@ class Content {
     std::unordered_map<std::string, Block*> blockDefs;
 public:
     ContentIndices* const indices;
+    DrawGroups* const drawGroups;
 
-    Content(ContentIndices* indices, 
+    Content(ContentIndices* indices, DrawGroups* drawGroups,
             std::unordered_map<std::string, Block*> blockDefs);
     ~Content();
     

src/definitions.cpp

@@ -9,7 +9,6 @@
 // All in-game definitions (blocks, items, etc..)
 void setup_definitions(ContentBuilder* builder) {
 	Block* block = new Block("core:air", "air");
-	block->drawGroup = 1;
 	block->lightPassing = true;
 	block->skyLightPassing = true;
 	block->obstacle = false;
@@ -52,7 +51,7 @@ void setup_definitions(ContentBuilder* builder) {
 	builder->add(block);
 
 	block = new Block("base:water", "water");
-	block->drawGroup = 4;
+	block->drawGroup = 3;
 	block->lightPassing = true;
 	block->skyLightPassing = false;
 	block->obstacle = false;
@@ -67,7 +66,7 @@ void setup_definitions(ContentBuilder* builder) {
 	builder->add(block);
 
 	block = new Block("base:grass", "grass");
-	block->drawGroup = 5;
+	block->drawGroup = 1;
 	block->lightPassing = true;
 	block->obstacle = false;
 	block->model = BlockModel::xsprite;
@@ -75,7 +74,7 @@ void setup_definitions(ContentBuilder* builder) {
 	builder->add(block);
 
 	block = new Block("base:flower", "flower");
-	block->drawGroup = 5;
+	block->drawGroup = 1;
 	block->lightPassing = true;
 	block->obstacle = false;
 	block->model = BlockModel::xsprite;

src/graphics/BlocksRenderer.cpp

@@ -317,12 +317,12 @@ vec4 BlocksRenderer::pickSoftLight(int x, int y, int z, const ivec3& right, cons
 void BlocksRenderer::render(const voxel* voxels, int atlas_size) {
 	int begin = chunk->bottom * (CHUNK_W * CHUNK_D);
 	int end = chunk->top * (CHUNK_W * CHUNK_D);
-	for (ubyte group = 0; group < 8; group++) {
+	for (const auto drawGroup : *content->drawGroups) {
 		for (int i = begin; i < end; i++) {
 			const voxel& vox = voxels[i];
 			blockid_t id = vox.id;
 			const Block& def = *blockDefsCache[id];
-			if (!id || def.drawGroup != group)
+			if (!id || def.drawGroup != drawGroup)
 				continue;
 			const UVRegion texfaces[6]{ cache->getRegion(id, 0), cache->getRegion(id, 1),
 										cache->getRegion(id, 2), cache->getRegion(id, 3),