freedom

flake.nix

@@ -14,12 +14,14 @@
           LD_LIBRARY_PATH = "${pkgs.lib.makeLibraryPath buildInputs}";
           name = "glonkers";
           src = ./.;
-          buildInputs = with pkgs; [
+          nativeBuildInputs = with pkgs; [
             pkg-config
-            libGL
-            wayland
-            wayland-protocols
             wayland-scanner
+            wayland-protocols
+            wayland
+          ];
+          buildInputs = with pkgs; [
+            libGL
           ];
           installPhase = ''
             mkdir -p $out/bin

renderer.c

@@ -134,9 +134,24 @@ Renderer new_renderer() {
     return renderer;
 }
 
+int shader_file_was_modified(Renderer *state) {
+    struct stat buf;
+    stat(state->shader_path, &buf);
+    int modified = buf.st_mtime != state->shader_file_modified.st_mtime;
+    if (modified) {
+        state->shader_file_modified = buf;
+    }
+    return modified;
+}
+
 /// shader_path cannot be NULL.
 void render(Renderer *state, int w, int h, double time, char *shader_path, int reload_shader) {
-    if (reload_shader || strcmp(state->shader_path, shader_path)) {
+    int m = shader_file_was_modified(state);
+    if (m) {
+        printf("AWOOGA\n");
+    }
+
+    if (m || reload_shader || strcmp(state->shader_path, shader_path)) {
         state->shader = load_shader(shader_path);
         state->shader_path = shader_path;
     }

renderer.h

@@ -1,10 +1,13 @@
 #ifndef RENDERER_H
 #define RENDERER_H
 
+#include <sys/stat.h>
+
 typedef struct Renderer {
     char *shader_path;
     unsigned int shader;
     unsigned int vao;
+    struct stat shader_file_modified;
 } Renderer;
 
 Renderer new_renderer();