feat: aspect ration correction

main.cpp

@@ -15,6 +15,7 @@ const char *fragmentShaderSource =
 {
     glViewport(0, 0, wdth, height);
 }*/
+float aspect = 1.0;
 
 void processInput(GLFWwindow *window) {
     if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
@@ -70,6 +71,7 @@ unsigned int compShader() {
 
 void framebuffer_size_callback(GLFWwindow *window, int width, int height) {
     glViewport(0, 0, width, height);
+    aspect = float(width) / height;
 }
 
 int main(int argc, char **argv) {
@@ -98,7 +100,7 @@ int main(int argc, char **argv) {
 
     glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
 
-    unsigned int shaderProgramm = compShader();
+    unsigned int shaderProgram = compShader();
 
     FullScreenQuad fsq{};
 
@@ -109,8 +111,9 @@ int main(int argc, char **argv) {
         glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
         glClear(GL_COLOR_BUFFER_BIT);
 
-        glUseProgram(shaderProgramm);
-
+        glUseProgram(shaderProgram);
+        int aspectLocation = glGetUniformLocation(shaderProgram, "aspect");
+        glUniform1f(aspectLocation, aspect);
         glBindVertexArray(fsq.getVAO());
         glDrawArrays(GL_TRIANGLES, 0, 6);