Init

2025-01-12 18:33:36 -05:00
commit 7a66ef5269
54 changed files with 12993 additions and 0 deletions
@@ -0,0 +1,88 @@
+package impl_glfw_opengl3
+import "base:runtime"
+import "core:os"
+import "core:fmt"
+import "vendor:glfw"
+import gl "vendor:OpenGL"
+import imgui ".."
+import imgui_glfw "../glfw"
+import imgui_gl3 "../opengl3"
+
+main :: proc() {
+    run()
+}
+
+glfw_error_cb :: proc "c" (error: i32, desc: cstring) {
+    context = runtime.default_context()
+    fmt.eprintln("[GLFW Error]", error, desc)
+}
+
+run :: proc() -> b32 {
+    glfw.SetErrorCallback(glfw_error_cb)
+    glfw.Init() or_return
+
+    glsl_version: cstring = "#version 330"
+    // glsl_version: cstring = "#version 130"
+    glfw.WindowHint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
+    glfw.WindowHint(glfw.CONTEXT_VERSION_MAJOR, 3)
+    glfw.WindowHint(glfw.CONTEXT_VERSION_MINOR, 2)
+    glfw.WindowHint(glfw.OPENGL_FORWARD_COMPAT, true)
+
+    window := glfw.CreateWindow(1280, 720, "Test", nil, nil)
+    if window == nil do return false
+    glfw.MakeContextCurrent(window)
+    glfw.SwapInterval(1)    
+
+    gl.load_up_to(3, 3, glfw.gl_set_proc_address)
+
+
+    imgui.CreateContext(nil)
+    io := imgui.GetIO()
+    io.ConfigFlags |= imgui.ConfigFlags.NavEnableKeyboard
+    io.ConfigFlags |= imgui.ConfigFlags.NavEnableGamepad
+    imgui.StyleColorsDark(nil)
+
+    imgui_glfw.InitForOpenGL(window, true)
+    imgui_gl3.InitEx(glsl_version)
+    clear_color: [4]f32 = {0.45, 0.55, 0.60, 1.00}
+    _cc := clear_color.xyz
+    show_demo: b8 = true
+
+    for !glfw.WindowShouldClose(window) {
+        glfw.PollEvents()
+        if glfw.GetWindowAttrib(window, glfw.ICONIFIED) != 0 {
+            imgui_glfw.Sleep(10)
+            continue
+        }
+
+        imgui_gl3.NewFrame()
+        imgui_glfw.NewFrame()
+        imgui.NewFrame()
+
+        if imgui.Button("Toggle DearImgui Demo") do show_demo = !show_demo
+        if show_demo do imgui.ShowDemoWindow(&show_demo)
+
+        _cc = clear_color.xyz
+        imgui.ColorEdit3("clear color", &_cc, .None)
+        imgui.SliderFloat3("clear color", &_cc, 0, 1)
+        clear_color.xyz = _cc
+        imgui.Render()
+
+        dw, dh:= glfw.GetFramebufferSize(window)
+        gl.Viewport(0, 0, dw, dh)
+        gl.ClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
+        gl.Clear(gl.COLOR_BUFFER_BIT);
+
+        imgui_gl3.RenderDrawData(imgui.GetDrawData());
+        glfw.SwapBuffers(window);
+
+    }
+
+    imgui_gl3.Shutdown()
+    imgui_glfw.Shutdown()
+    imgui.DestroyContext(nil)
+
+    glfw.DestroyWindow(window)
+    glfw.Terminate()
+    return true
+}