diff --git a/.clangd b/.clangd
index 4ae1f41..9dcba43 100644
--- a/.clangd
+++ b/.clangd
@@ -1,3 +1,6 @@
+If:
+    OS: Windows
+
 CompileFlags:
     Add:
         --target=x86_64-w64-mingw32
\ No newline at end of file
diff --git a/main.cpp b/main.cpp
index 65bd161..510b208 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,6 +1,7 @@
 #include "lopenglprogram.h"
 #include "camera.h"
 #include <GLFW/glfw3.h>
+#include <algorithm>
 #include <functional>
 #include <glm/ext/matrix_clip_space.hpp>
 #include <glm/ext/matrix_transform.hpp>
@@ -10,9 +11,7 @@
 #include <memory>
 #include <string>
 #include <tuple>
-#include <utility>
-#include <print>
-
+#include <vector>
 
 class GLWidget {
 
@@ -55,6 +54,9 @@ public:
             if (heatmapVbo_) {
                 glDeleteBuffers(1, &heatmapVbo_);
             }
+            if (heatmapIbo_) {
+                glDeleteBuffers(1, &heatmapIbo_);
+            }
             deinit_ = true;
         }
         
@@ -224,7 +226,30 @@ private:
     }
 
     void initHeatmapGeometry_() {
+        if (heatmapIbo_) {
+            glDeleteBuffers(1, &heatmapIbo_);
+            heatmapIbo_ = 0;
+        }
+        if (heatmapVbo_) {
+            glDeleteBuffers(1, &heatmapVbo_);
+            heatmapVbo_ = 0;
+        }
+        if (heatmapVao_) {
+            glDeleteVertexArrays(1, &heatmapVao_);
+            heatmapVao_ = 0;
+        }
 
+        const float aspect = (panelWidth_ > 1e-6F) ? (panelHeight_ / panelWidth_) : 1.0F;
+        const int max_res = 512;
+        const int cols = std::max(2, std::min(dotcols_ * dotupscale_, max_res));
+        int rows = std::max(2, int(cols * aspect + 0.5F));
+        rows = std::max(2, std::min(rows, max_res));
+        heatmapcols_ = cols;
+        heatmaprows_ = rows;
+
+        const int vertex_count = cols * rows;
+        std::vector<float> verts;
+        
     }
 
     bool initBgProgram() {
@@ -483,6 +508,7 @@ private:
     std::string heatmapFragShaderPath_;
     unsigned int heatmapVao_ = 0;
     unsigned int heatmapVbo_ = 0;
+    unsigned int heatmapIbo_ = 0;
 
     ViewPort viewport_{800, 600};
     Camera camera_{glm::vec3(0.0F, 0.0F, 2.0F)};
@@ -493,6 +519,12 @@ private:
     float lastFrame_ = 0.0f;
     bool lightMode_ = false;
 
+    int dotcols_ = 8;
+    int dotrows_ = 12;
+    int dotupscale_ = 100;
+    int heatmapcols_;
+    int heatmaprows_;
+
     bool deinit_;
 };