Init

2025-01-12 18:33:36 -05:00
commit 7a66ef5269
54 changed files with 12993 additions and 0 deletions
@@ -0,0 +1,91 @@
+package impl_wini32_opengl3
+import "base:runtime"
+import "core:os"
+import "core:fmt"
+import win32 "core:sys/windows"
+import gl "vendor:OpenGL"
+import imgui ".."
+import imgui_win32 "../win32"
+import imgui_gl3 "../opengl3"
+
+main :: proc() {
+    run()
+}
+
+win32_hrc: win32.HGLRC
+win32_main_window: win32.HDC
+win32_width: i32
+win32_height: i32
+
+win32_gl_create :: proc(hwnd: win32.HWND, data: win32.HDC) -> b8
+{
+    hdc: win32.HDC = win32.GetDC(hwnd)
+    pfd: win32.PIXELFORMATDESCRIPTOR = {}
+    pfd.nSize = size_of(pfd)
+    pfd.nVersion = 1
+    pfd.dwFlags = 0 // TODO flags
+    pfd.iPixelType = 0 // more flags
+    pfd.cColorBits = 32
+
+    pf: i32 = win32.ChoosePixelFormat(hdc, &pfd)
+    if pf == 0 do return false
+    if !win32.SetPixelFormat(hdc, pf, &pfd) do return false
+    win32.ReleaseDC(hwnd, hdc)
+    data = win32.GetDC(hwnd)
+    if win32_hrc == 0 do win32_hrc = win32.wglCreateContext(data)
+    return true 
+}
+
+run :: proc() -> b32 {
+    wc: win32.WNDCLASSEXW = {}
+
+    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
+}