1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
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();
}
}
|
