Fixed unwanted tileing

main.cc

@@ -2,6 +2,7 @@
 #include <GLFW/glfw3.h>
 #include <iostream>
 #include <random>
+#include <thread>
 #include <utility>
 #include <vector>
 
@@ -42,12 +43,10 @@ GLuint linkProgram(std::vector<GLuint> shaders) {
   return program;
 }
 
-
 void resizeCall(GLFWwindow *window, int width, int height) {
   glViewport(0, 0, width, height);
 }
 
-
 int main() {
   if (!glfwInit())
     return -1;
@@ -76,10 +75,12 @@ int main() {
     glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, X, Y);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
   }
 
   /*rnd noise*/
-  std::vector<GLubyte> data(GRID_SIZE*4);
+  std::vector<GLubyte> data(GRID_SIZE * 4);
   std::mt19937 rng;
   std::uniform_int_distribution<int> dist(0, 1);
   for (int i = 0; i < GRID_SIZE; ++i) {
@@ -148,6 +149,7 @@ int main() {
 
     glBindVertexArray(VAO);
     glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, (void *)0);
+    std::this_thread::sleep_for(std::chrono::duration<double>(.05));
 
     glfwSwapBuffers(w);
     std::swap(ri, wi);

shaders.hpp

@@ -44,7 +44,7 @@ out vec2 TexCoord;
 void main()
 {
     gl_Position = vec4(aPos, 1.0);
-    TexCoord = aTexCoord;
+    TexCoord = aTexCoord + vec2(1,1);
 }
 
 )glsl";
@@ -58,7 +58,7 @@ uniform sampler2D tex0;
 
 void main()
 {
-    FragColor = texture(tex0, TexCoord);
+    FragColor = texture(tex0, TexCoord/vec2(2,2));
 }
 )glsl";