Push Optimisation mesh. Generation des Chunks à revoir.

SQCSim2021/chunk.cpp

@@ -110,28 +110,49 @@ void Chunk::SetBlock(int x, int y, int z, BlockType type, World* world) {
 
 BlockType Chunk::GetBlock(int x, int y, int z) { return m_blocks.Get(x, y, z); }
 
-void Chunk::CheckNeighbors(unsigned int x, unsigned int z, World* world) {
+NEIGHBOR_CHUNK_POSITION Chunk::CheckNeighbors(unsigned int x, unsigned int z, World* world) {
     unsigned int cx, cy;
 
     world->GetScope(cx, cy);
 
-    if (x == 0 && m_posX - cx >= 0 &&
+    if (x == 0 && m_posX - cx >= 0 && world->ChunkAt((m_posX - cx - 1) * CHUNK_SIZE_X, 1, (m_posY - cy) * CHUNK_SIZE_Z)) {
-        world->ChunkAt((m_posX - cx - 1) * CHUNK_SIZE_X, 1, (m_posY - cy) * CHUNK_SIZE_Z))
         world->ChunkAt((m_posX - cx - 1) * CHUNK_SIZE_X, 1, (m_posY - cy) * CHUNK_SIZE_Z)->MakeDirty();
-    else if (x == CHUNK_SIZE_X - 1 && m_posX - cx < WORLD_SIZE_X && 
+        return X_MINUS;
-        world->ChunkAt((m_posX - cx + 1) * CHUNK_SIZE_X, 1, (m_posY - cy) * CHUNK_SIZE_Z))
+    }
+    else if (x == CHUNK_SIZE_X - 1 && m_posX - cx < WORLD_SIZE_X && world->ChunkAt((m_posX - cx + 1) * CHUNK_SIZE_X, 1, (m_posY - cy) * CHUNK_SIZE_Z)) {
         world->ChunkAt((m_posX - cx + 1) * CHUNK_SIZE_X, 1, (m_posY - cy) * CHUNK_SIZE_Z)->MakeDirty();
+        return X_PLUS;
+    }
 
-    if (z == 0 && m_posY - cy >= 0 && 
+    if (z == 0 && m_posY - cy >= 0 && world->ChunkAt((m_posX - cx) * CHUNK_SIZE_X, 1, (m_posY - cy - 1) * CHUNK_SIZE_Z)) {
-        world->ChunkAt((m_posX - cx) * CHUNK_SIZE_X, 1, (m_posY - cy - 1) * CHUNK_SIZE_Z))
         world->ChunkAt((m_posX - cx) * CHUNK_SIZE_X, 1, (m_posY - cy - 1) * CHUNK_SIZE_Z)->MakeDirty();
-    else if (z == CHUNK_SIZE_X - 1 && m_posY - cy < WORLD_SIZE_Y &&
+        return Z_MINUS;
-        world->ChunkAt((m_posX - cx) * CHUNK_SIZE_X, 1, (m_posY - cy + 1) * CHUNK_SIZE_Z))
+    }
+    else if (z == CHUNK_SIZE_X - 1 && m_posY - cy < WORLD_SIZE_Y && world->ChunkAt((m_posX - cx) * CHUNK_SIZE_X, 1, (m_posY - cy + 1) * CHUNK_SIZE_Z)) {
         world->ChunkAt((m_posX - cx) * CHUNK_SIZE_X, 1, (m_posY - cy + 1) * CHUNK_SIZE_Z)->MakeDirty();
+        return Z_PLUS;
+    }
+
+    return NONE;
 }
 
 void Chunk::GetPosition(unsigned int& x, unsigned int& y) const { x = m_posX; y = m_posY; }
 
+void Chunk::AddAllVertices(VertexBuffer::VertexData* vd, int& count, BlockType bt, int cx, int cy, int x, int y, int z, float u, float v, float s, World* world) {
+    if (world->BlockAt(cx + 1, y, cy) == BTYPE_AIR) {
+        AddXPlusVertices(vd, count, bt, x, y, z, u, v, s);
+    }
+    if (world->BlockAt(cx - 1, y, cy) == BTYPE_AIR) {
+        AddXMinusVertices(vd, count, bt, x, y, z, u, v, s);
+    }
+    if (world->BlockAt(cx, y, cy + 1) == BTYPE_AIR) {
+        AddZPlusVertices(vd, count, bt, x, y, z, u, v, s);
+    }
+    if (world->BlockAt(cx, y, cy - 1) == BTYPE_AIR) {
+        AddZMinusVertices(vd, count, bt, x, y, z, u, v, s);
+    }
+}
+
 void Chunk::FlushMeshToVBO() {
     m_vertexBuffer.SetMeshData(m_vd, m_vcount);
     m_vcount = 0;
@@ -181,47 +202,66 @@ void Chunk::AddBlockToMesh(VertexBuffer::VertexData* vd, int& count, BlockType b
 
     int cx = x + (m_posX - cex) * CHUNK_SIZE_X, cy = z + (m_posY - cey) * CHUNK_SIZE_Z;
 
-    if (y == CHUNK_SIZE_Y - 1 || GetBlock(x, y + 1, z) == BTYPE_AIR) {                      //  y
+    bool isOnBorder = (x == 0 || x == CHUNK_SIZE_X - 1 ||
+                       z == 0 || z == CHUNK_SIZE_Z - 1 ||
+                       y == 0 || y == CHUNK_SIZE_Y - 1);
+
+    NEIGHBOR_CHUNK_POSITION ncp = CheckNeighbors(x, z, world);
+
+    if (y == CHUNK_SIZE_Y - 1 || GetBlock(x, y + 1, z) == BTYPE_AIR) {                                              // Y+
         vd[count++] = VertexBuffer::VertexData(x, y + 1.f, z, .8f, .8f, .8f, u, v);
         vd[count++] = VertexBuffer::VertexData(x, y + 1.f, z + 1.f, .8f, .8f, .8f, u, v + s);
         vd[count++] = VertexBuffer::VertexData(x + 1.f, y + 1.f, z + 1.f, .8f, .8f, .8f, u + s, v + s);
         vd[count++] = VertexBuffer::VertexData(x + 1.f, y + 1.f, z, .8f, .8f, .8f, u + s, v);
     }
 
-    if (y == 0 || GetBlock(x, y - 1, z) == BTYPE_AIR) {                                     // -y
+    if (y == 0 || GetBlock(x, y - 1, z) == BTYPE_AIR) {                                                             // Y-
         vd[count++] = VertexBuffer::VertexData(x, y, z + 1.f, .2f, .2f, .2f, u, v);
         vd[count++] = VertexBuffer::VertexData(x, y, z, .2f, .2f, .2f, u, v + s);
         vd[count++] = VertexBuffer::VertexData(x + 1.f, y, z, .2f, .2f, .2f, u + s, v + s);
         vd[count++] = VertexBuffer::VertexData(x + 1.f, y, z + 1.f, .2f, .2f, .2f, u + s, v);
     }
 
-    if (world->BlockAt(cx + 1, y, cy) == BTYPE_AIR) {                      //  x
+    if (!isOnBorder || (x == CHUNK_SIZE_X - 1 && ncp == X_PLUS) || (x == CHUNK_SIZE_X - 1 && ncp == NONE)) {        // X+
+        AddAllVertices(vd, count, bt, cx, cy, x, y, z, u, v, s, world);
+    }
+    else if (!isOnBorder || (x == 0 && ncp == X_MINUS) || (x == 0 && ncp == NONE)) {							    // X-
+        AddAllVertices(vd, count, bt, cx, cy, x, y, z, u, v, s, world);
+	}
+    else if (!isOnBorder || (z == CHUNK_SIZE_Z - 1 && ncp == Z_PLUS) || (z == CHUNK_SIZE_Z - 1 && ncp == NONE)) {	// Z+
+        AddAllVertices(vd, count, bt, cx, cy, x, y, z, u, v, s, world);
+	}
+    else if (!isOnBorder || (z == 0 && ncp == Z_MINUS) || (z == 0 && ncp == NONE)) {								// Z-
+        AddAllVertices(vd, count, bt, cx, cy, x, y, z, u, v, s, world);
+    }
+}
+
+void Chunk::AddXPlusVertices(VertexBuffer::VertexData* vd, int& count, BlockType bt, int x, int y, int z, float u, float v, float s) {
     vd[count++] = VertexBuffer::VertexData(x + 1.f, y, z, .9f, .9f, .9f, u, v);
     vd[count++] = VertexBuffer::VertexData(x + 1.f, y + 1.f, z, .9f, .9f, .9f, u, v + s);
     vd[count++] = VertexBuffer::VertexData(x + 1.f, y + 1.f, z + 1.f, .9f, .9f, .9f, u + s, v + s);
     vd[count++] = VertexBuffer::VertexData(x + 1.f, y, z + 1.f, .9f, .9f, .9f, u + s, v);
-    }
+}
 
-    if (world->BlockAt(cx - 1, y, cy) == BTYPE_AIR) {                                     // -x
+void Chunk::AddXMinusVertices(VertexBuffer::VertexData* vd, int& count, BlockType bt, int x, int y, int z, float u, float v, float s) {
     vd[count++] = VertexBuffer::VertexData(x, y + 1.f, z + 1.f, .5f, .5f, .5f, u, v + s);
     vd[count++] = VertexBuffer::VertexData(x, y + 1.f, z, .5f, .5f, .5f, u + s, v + s);
     vd[count++] = VertexBuffer::VertexData(x, y, z, .5f, .5f, .5f, u + s, v);
     vd[count++] = VertexBuffer::VertexData(x, y, z + 1.f, .5f, .5f, .5f, u, v);
-    }
+}
 
-    if (world->BlockAt(cx, y, cy + 1) == BTYPE_AIR) {                      //  z
+void Chunk::AddZPlusVertices(VertexBuffer::VertexData* vd, int& count, BlockType bt, int x, int y, int z, float u, float v, float s) {
     vd[count++] = VertexBuffer::VertexData(x, y, z + 1.f, .4f, .4f, .4f, u, v);
     vd[count++] = VertexBuffer::VertexData(x + 1.f, y, z + 1.f, .4f, .4f, .4f, u + s, v);
     vd[count++] = VertexBuffer::VertexData(x + 1.f, y + 1.f, z + 1.f, .4f, .4f, .4f, u + s, v + s);
     vd[count++] = VertexBuffer::VertexData(x, y + 1.f, z + 1.f, .4f, .4f, .4f, u, v + s);
-    }
+}
 
-    if (world->BlockAt(cx, y, cy - 1) == BTYPE_AIR) {                                     // -z
+void Chunk::AddZMinusVertices(VertexBuffer::VertexData* vd, int& count, BlockType bt, int x, int y, int z, float u, float v, float s) {
     vd[count++] = VertexBuffer::VertexData(x, y + 1.f, z, 1.f, 1.f, 1.f, u, v + s);
     vd[count++] = VertexBuffer::VertexData(x + 1.f, y + 1.f, z, 1.f, 1.f, 1.f, u + s, v + s);
-        vd[count++] = VertexBuffer::VertexData(x + 1.f, y, z , 1.f, 1.f, 1.f, u + s, v);
+    vd[count++] = VertexBuffer::VertexData(x + 1.f, y, z, 1.f, 1.f, 1.f, u + s, v);
-        vd[count++] = VertexBuffer::VertexData(x, y, z , 1.f, 1.f, 1.f, u, v);
+    vd[count++] = VertexBuffer::VertexData(x, y, z, 1.f, 1.f, 1.f, u, v);
-    }
 }
 
 void Chunk::Render() const { m_vertexBuffer.Render(); }

SQCSim2021/chunk.h

@@ -31,9 +31,14 @@ class Chunk {
         void RemoveBlock(int x, int y, int z, World* world);
         void SetBlock(int x, int y, int z, BlockType type, World* world);
         BlockType GetBlock(int x, int y, int z);
-        void CheckNeighbors(unsigned int x, unsigned int z, World* world);
+        NEIGHBOR_CHUNK_POSITION CheckNeighbors(unsigned int x, unsigned int z, World* world);
         void GetPosition(unsigned int& x, unsigned int& y) const;
 
+        void AddAllVertices(VertexBuffer::VertexData* vd, int& count, BlockType bt,int cx, int cy, int x, int y, int z, float u, float v, float s, World* world);
+        void AddXPlusVertices(VertexBuffer::VertexData* vd, int& count, BlockType bt, int x, int y, int z, float u, float v, float s);
+        void AddXMinusVertices(VertexBuffer::VertexData* vd, int& count, BlockType bt, int x, int y, int z, float u, float v, float s);
+        void AddZPlusVertices(VertexBuffer::VertexData* vd, int& count, BlockType bt, int x, int y, int z, float u, float v, float s);
+        void AddZMinusVertices(VertexBuffer::VertexData* vd, int& count, BlockType bt, int x, int y, int z, float u, float v, float s);
 
         void Update(BlockInfo* blockinfo[BTYPE_LAST], World* world);
         void FlushMeshToVBO();

SQCSim2021/define.h

@@ -19,8 +19,8 @@
 #define SEED 12345
 
 #ifdef _DEBUG
-#define WORLD_SIZE_X 64
+#define WORLD_SIZE_X 2
-#define WORLD_SIZE_Y 64
+#define WORLD_SIZE_Y 2
 
 #define FRAMES_RENDER_CHUNKS 4
 #define FRAMES_UPDATE_CHUNKS 4
@@ -39,8 +39,8 @@
 #endif
 
 #ifdef NDEBUG
-#define WORLD_SIZE_X 16
+#define WORLD_SIZE_X 2
-#define WORLD_SIZE_Y 16
+#define WORLD_SIZE_Y 2
 
 #define FRAMES_RENDER_CHUNKS 1
 #define FRAMES_UPDATE_CHUNKS 1
@@ -58,6 +58,7 @@
 
 typedef uint8_t BlockType;
 enum BLOCK_TYPE { BTYPE_AIR, BTYPE_DIRT, BTYPE_GRASS, BTYPE_METAL, BTYPE_ICE, BTYPE_LAST };
+enum NEIGHBOR_CHUNK_POSITION { NONE, X_MINUS, X_PLUS, Z_MINUS, Z_PLUS };
 
 //#define TEXTURE_PATH        "../SQCSim2021/media/textures/"
 //#define SHADER_PATH		    "../SQCSim2021/media/shaders/"