Init

2025-01-12 18:33:36 -05:00
commit 7a66ef5269
54 changed files with 12993 additions and 0 deletions
@@ -0,0 +1,100 @@
+package impl_sdl2_opengl3
+import os "core:os"
+import fmt "core:fmt"
+import sdl "vendor:sdl2"
+import gl "vendor:OpenGL"
+import imgui ".."
+import imgui_sdl2 "../sdl2"
+import imgui_gl3 "../opengl3"
+
+main :: proc() {
+    run()
+}
+
+run :: proc() -> b32 {
+    if sdl.Init({.VIDEO, .GAMECONTROLLER, .TIMER}) != 0 {
+        fmt.eprintln(sdl.GetError())
+        return false
+    }
+
+    glsl_version: cstring = "#version 330"
+    sdl.GL_SetAttribute(.CONTEXT_FLAGS, 0)
+    sdl.GL_SetAttribute(.CONTEXT_PROFILE_MASK, i32(sdl.GLprofile.CORE))
+    sdl.GL_SetAttribute(.CONTEXT_MAJOR_VERSION, 3)
+    sdl.GL_SetAttribute(.CONTEXT_MINOR_VERSION, 0)
+
+    sdl.GL_SetAttribute(.DOUBLEBUFFER, 1)
+    sdl.GL_SetAttribute(.DEPTH_SIZE, 24)
+    sdl.GL_SetAttribute(.STENCIL_SIZE, 8)
+
+    window_flags: sdl.WindowFlags = {.OPENGL, .RESIZABLE, .HIDDEN, .ALLOW_HIGHDPI}
+    window := sdl.CreateWindow("Test", sdl.WINDOWPOS_CENTERED, sdl.WINDOWPOS_CENTERED, 1280, 720, window_flags)
+    if window == nil {
+        fmt.eprintln(sdl.GetError())
+        return false
+    }
+
+    gl_ctx := sdl.GL_CreateContext(window)
+    if gl_ctx == nil {
+        fmt.eprintln(sdl.GetError())
+        return false
+    }
+
+    sdl.GL_MakeCurrent(window, gl_ctx)
+    gl.load_up_to(3, 3, sdl.gl_set_proc_address)
+
+    sdl.GL_SetSwapInterval(1)
+    sdl.ShowWindow(window)
+
+    imgui.CreateContext(nil)
+    io := imgui.GetIO()
+    io.ConfigFlags |= imgui.ConfigFlags.NavEnableKeyboard
+    io.ConfigFlags |= imgui.ConfigFlags.NavEnableGamepad
+    imgui.StyleColorsDark(nil)
+    
+    imgui_sdl2.InitForOpenGL(window, gl_ctx)
+    imgui_gl3.InitEx(glsl_version)
+    clear_color: [4]f32 = {0.45, 0.55, 0.60, 1.00}
+    _cc := clear_color.xyz
+    done: b32 = false
+    show_demo: b8 = true
+
+    for !done {
+        event: sdl.Event
+        for sdl.PollEvent(&event) {
+            imgui_sdl2.ProcessEvent(&event)
+            if event.type == .QUIT do done = true
+            if event.type == .WINDOWEVENT && event.window.event == .CLOSE do done = true
+        }
+
+        imgui_gl3.NewFrame()
+        imgui_sdl2.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()
+
+        gl.Viewport(0, 0, i32(io.DisplaySize.x), i32(io.DisplaySize.y))
+        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());
+        sdl.GL_SwapWindow(window);
+
+    }
+
+    imgui_gl3.Shutdown()
+    imgui_sdl2.Shutdown()
+    imgui.DestroyContext(nil)
+
+    sdl.GL_DeleteContext(gl_ctx)
+    sdl.DestroyWindow(window)
+    sdl.Quit()
+    return true
+}