Added imgui for configuration

1 files changed, 35 insertions, 0 deletions

diff --git a/vendor/zgui/src/backend_glfw.zig b/vendor/zgui/src/backend_glfw.zig
new file mode 100644
index 0000000..83603fe
--- /dev/null
+++ b/vendor/zgui/src/backend_glfw.zig
@@ -0,0 +1,35 @@
+const gui = @import("gui.zig");
+
+// This call will install GLFW callbacks to handle GUI interactions.
+// Those callbacks will chain-call user's previously installed callbacks, if any.
+// This means that custom user's callbacks need to be installed *before* calling zgpu.gui.init().
+pub fn init(
+    window: *const anyopaque, // zglfw.Window
+) void {
+    if (!ImGui_ImplGlfw_InitForOther(window, true)) {
+        unreachable;
+    }
+}
+
+pub fn initOpenGL(
+    window: *const anyopaque, // zglfw.Window
+) void {
+    if (!ImGui_ImplGlfw_InitForOpenGL(window, true)) {
+        unreachable;
+    }
+}
+
+pub fn deinit() void {
+    ImGui_ImplGlfw_Shutdown();
+}
+
+pub fn newFrame() void {
+    ImGui_ImplGlfw_NewFrame();
+}
+
+// Those functions are defined in `imgui_impl_glfw.cpp`
+// (they include few custom changes).
+extern fn ImGui_ImplGlfw_InitForOther(window: *const anyopaque, install_callbacks: bool) bool;
+extern fn ImGui_ImplGlfw_InitForOpenGL(window: *const anyopaque, install_callbacks: bool) bool;
+extern fn ImGui_ImplGlfw_NewFrame() void;
+extern fn ImGui_ImplGlfw_Shutdown() void;