initial commit

1 files changed, 77 insertions, 0 deletions

diff --git a/src/main.zig b/src/main.zig
new file mode 100644
index 0000000..42fa152
--- /dev/null
+++ b/src/main.zig
@@ -0,0 +1,77 @@
+const c = @import("c.zig");
+const std = @import("std");
+const panic = std.debug.panic;
+const glfw_impl = @import("glfw_impl.zig");
+
+extern fn errorCallback(err: c_int, description: [*c]const u8) void {
+      panic("Error: {}\n", description);
+}
+
+var window: *c.GLFWwindow = undefined;
+
+pub fn main() void {
+  _ = c.glfwSetErrorCallback(errorCallback);
+
+  if (c.glfwInit() == c.GL_FALSE) {
+      panic("GLFW init failure\n");
+  }
+  defer c.glfwTerminate();
+
+  c.glfwWindowHint(c.GLFW_CONTEXT_VERSION_MAJOR, 3);
+  c.glfwWindowHint(c.GLFW_CONTEXT_VERSION_MINOR, 2);
+  c.glfwWindowHint(c.GLFW_OPENGL_FORWARD_COMPAT, c.GL_TRUE);
+  c.glfwWindowHint(c.GLFW_OPENGL_PROFILE, c.GLFW_OPENGL_CORE_PROFILE);
+
+  // c.glfwWindowHint(c.GLFW_OPENGL_DEBUG_CONTEXT, debug_gl.is_on);
+  // c.glfwWindowHint(c.GLFW_DEPTH_BITS, 0);
+  // c.glfwWindowHint(c.GLFW_STENCIL_BITS, 8);
+  c.glfwWindowHint(c.GLFW_RESIZABLE, c.GL_TRUE);
+
+  const window_width = 640;
+  const window_height = 480;
+  window = c.glfwCreateWindow(window_width, window_height, c"ImGUI Test", null, null) orelse {
+      panic("unable to create window\n");
+  };
+  defer c.glfwDestroyWindow(window);
+
+  c.glfwMakeContextCurrent(window);
+  c.glfwSwapInterval(1);
+
+  const context = c.igCreateContext(null);
+  defer c.igDestroyContext(context);
+
+  const io = c.igGetIO();
+  io.*.ConfigFlags |= @enumToInt(c.ImGuiConfigFlags_NavEnableKeyboard);
+  io.*.ConfigFlags |= @enumToInt(c.ImGuiConfigFlags_DockingEnable);
+  io.*.ConfigFlags |= @enumToInt(c.ImGuiConfigFlags_ViewportsEnable);
+
+  const style = c.igGetStyle();
+  c.igStyleColorsDark(style);
+
+  if (io.*.ConfigFlags & @enumToInt(c.ImGuiConfigFlags_ViewportsEnable) != 0) {
+    style.*.WindowRounding = 0.0;
+    style.*.Colors[@enumToInt(c.ImGuiCol_WindowBg)].w = 1.0;
+  }
+
+  glfw_impl.Init(window, true, glfw_impl.ClientApi.OpenGL);
+  // ImGui_InitForOpenGL(window, true);
+  // ImGui_ImplOpenGL3_Init(glsl_version);
+
+  const start_time = c.glfwGetTime();
+  var prev_time = start_time;
+
+  while (c.glfwWindowShouldClose(window) == c.GL_FALSE) {
+    // c.glClear(c.GL_COLOR_BUFFER_BIT | c.GL_DEPTH_BUFFER_BIT | c.GL_STENCIL_BUFFER_BIT);
+
+    const now_time = c.glfwGetTime();
+    const elapsed = now_time - prev_time;
+    prev_time = now_time;
+
+    // nextFrame(t, elapsed);
+
+    // draw(t, @This());
+    c.glfwSwapBuffers(window);
+
+    c.glfwPollEvents();
+  }
+}