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-rw-r--r--build.zig37
-rw-r--r--imgui.zig1
-rw-r--r--src/debug_gl.zig4
-rw-r--r--src/demo.zig25
-rw-r--r--src/gl3_impl.zig10
-rw-r--r--src/glfw_impl.zig6
-rw-r--r--src/main.zig145
7 files changed, 136 insertions, 92 deletions
diff --git a/build.zig b/build.zig
index 955d22b..6a4c66f 100644
--- a/build.zig
+++ b/build.zig
@@ -2,22 +2,29 @@ const Builder = @import("std").build.Builder;
const builtin = @import("builtin");
pub fn build(b: *Builder) void {
- const target = b.standardTargetOptions(.{});
- const mode = b.standardReleaseOptions();
- const windows = b.option(bool, "windows", "create windows build") orelse false;
+ const mode = b.standardReleaseOptions();
- var exe = b.addExecutable("test", "src/main.zig");
- exe.setBuildMode(mode);
+ const lib = b.addStaticLibrary("imgui", "src/main.zig");
+ lib.setBuildMode(mode);
+ lib.linkSystemLibrary("c");
+ lib.linkSystemLibrary("glfw");
+ lib.linkSystemLibrary("epoxy");
+ lib.addIncludeDir("cimgui");
+ lib.linkSystemLibraryName("cimgui/cimgui.so");
+ lib.install();
- exe.linkSystemLibrary("c");
- exe.linkSystemLibrary("glfw");
- exe.linkSystemLibrary("epoxy");
- exe.addIncludeDir("cimgui");
- exe.linkSystemLibraryName("cimgui/cimgui.so");
- exe.install();
+ var exe = b.addExecutable("demo", "src/demo.zig");
+ exe.setBuildMode(mode);
- const play = b.step("play", "Play the game");
- const run = exe.run();
- run.step.dependOn(b.getInstallStep());
- play.dependOn(&run.step);
+ exe.linkSystemLibrary("c");
+ exe.linkSystemLibrary("glfw");
+ exe.linkSystemLibrary("epoxy");
+ exe.addIncludeDir("cimgui");
+ exe.linkSystemLibraryName("cimgui/cimgui.so");
+ exe.install();
+
+ const demo = b.step("demo", "Run the demo");
+ const run = exe.run();
+ run.step.dependOn(b.getInstallStep());
+ demo.dependOn(&run.step);
}
diff --git a/imgui.zig b/imgui.zig
new file mode 100644
index 0000000..6d80481
--- /dev/null
+++ b/imgui.zig
@@ -0,0 +1 @@
+pub usingnamespace @import("./src/main.zig");
diff --git a/src/debug_gl.zig b/src/debug_gl.zig
index debf51d..1567e7c 100644
--- a/src/debug_gl.zig
+++ b/src/debug_gl.zig
@@ -4,10 +4,10 @@ const os = std.os;
const panic = std.debug.panic;
const builtin = @import("builtin");
-pub const is_on = if (builtin.mode == builtin.Mode.ReleaseFast) c.GL_FALSE else c.GL_TRUE;
+pub const is_on = if (builtin.mode == .ReleaseFast) c.GL_FALSE else c.GL_TRUE;
pub fn assertNoError() void {
- if (builtin.mode != builtin.Mode.ReleaseFast) {
+ if (builtin.mode != .ReleaseFast) {
const err = c.glGetError();
if (err != c.GL_NO_ERROR) {
panic("GL error: {}\n", err);
diff --git a/src/demo.zig b/src/demo.zig
new file mode 100644
index 0000000..cf27a2c
--- /dev/null
+++ b/src/demo.zig
@@ -0,0 +1,25 @@
+const ig = @import("main.zig");
+
+pub fn main() !void {
+ const window = ig.Window.init();
+
+ // const start_time = c.glfwGetTime();
+ // var prev_time = start_time;
+ var show_demo = false;
+
+ while (!window.shouldClose()) {
+ try window.beginFrame();
+
+ // main part
+ if (show_demo)
+ ig.igShowDemoWindow(null);
+
+ if (ig.igBegin("yolozwek", null, 0)) {
+ ig.igText("Hello World :)");
+ _ = ig.igCheckbox("Demo window", &show_demo);
+ ig.igEnd();
+ }
+
+ window.endFrame();
+ }
+}
diff --git a/src/gl3_impl.zig b/src/gl3_impl.zig
index 27212ff..8f84d8b 100644
--- a/src/gl3_impl.zig
+++ b/src/gl3_impl.zig
@@ -155,11 +155,11 @@ fn CheckThing(comptime thingType: CheckableThing, handle: c.GLuint, desc: []cons
var buf: [1024]u8 = undefined;
var length: c.GLsizei = undefined;
getInfoLogFunc(handle, buf.len, &length, &buf[0]);
- debug.warn("{}\n", .{buf[0..@intCast(usize, length)]});
+ debug.warn("{s}\n", .{buf[0..@intCast(usize, length)]});
}
if (@intCast(c.GLboolean, status) == c.GL_FALSE) {
- debug.warn("ERROR: CreateDeviceObjects: failed to compile/link {}! (with GLSL '{}')\n", .{ desc, g_GlslVersionString });
+ debug.warn("ERROR: CreateDeviceObjects: failed to compile/link {s}! (with GLSL '{s}')\n", .{ desc, g_GlslVersionString });
return error.ShaderLinkError;
}
}
@@ -443,7 +443,7 @@ fn SetupRenderState(draw_data: *c.ImDrawData, fb_width: i32, fb_height: i32, ver
c.glEnableVertexAttribArray(@intCast(c.GLuint, g_AttribLocationVtxPos));
c.glEnableVertexAttribArray(@intCast(c.GLuint, g_AttribLocationVtxUV));
c.glEnableVertexAttribArray(@intCast(c.GLuint, g_AttribLocationVtxColor));
- c.glVertexAttribPointer(@intCast(c.GLuint, g_AttribLocationVtxPos), 2, c.GL_FLOAT, c.GL_FALSE, @sizeOf(c.ImDrawVert), @intToPtr(?*c.GLvoid, @byteOffsetOf(c.ImDrawVert, "pos")));
- c.glVertexAttribPointer(@intCast(c.GLuint, g_AttribLocationVtxUV), 2, c.GL_FLOAT, c.GL_FALSE, @sizeOf(c.ImDrawVert), @intToPtr(?*c.GLvoid, @byteOffsetOf(c.ImDrawVert, "uv")));
- c.glVertexAttribPointer(@intCast(c.GLuint, g_AttribLocationVtxColor), 4, c.GL_UNSIGNED_BYTE, c.GL_TRUE, @sizeOf(c.ImDrawVert), @intToPtr(?*c.GLvoid, @byteOffsetOf(c.ImDrawVert, "col")));
+ c.glVertexAttribPointer(@intCast(c.GLuint, g_AttribLocationVtxPos), 2, c.GL_FLOAT, c.GL_FALSE, @sizeOf(c.ImDrawVert), @intToPtr(?*c.GLvoid, @offsetOf(c.ImDrawVert, "pos")));
+ c.glVertexAttribPointer(@intCast(c.GLuint, g_AttribLocationVtxUV), 2, c.GL_FLOAT, c.GL_FALSE, @sizeOf(c.ImDrawVert), @intToPtr(?*c.GLvoid, @offsetOf(c.ImDrawVert, "uv")));
+ c.glVertexAttribPointer(@intCast(c.GLuint, g_AttribLocationVtxColor), 4, c.GL_UNSIGNED_BYTE, c.GL_TRUE, @sizeOf(c.ImDrawVert), @intToPtr(?*c.GLvoid, @offsetOf(c.ImDrawVert, "col")));
}
diff --git a/src/glfw_impl.zig b/src/glfw_impl.zig
index 7d28e08..439c749 100644
--- a/src/glfw_impl.zig
+++ b/src/glfw_impl.zig
@@ -35,7 +35,7 @@ pub fn Init(window: *c.GLFWwindow, install_callbacks: bool, client_api: ClientAp
io.*.BackendFlags |= c.ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)
if (false) io.*.BackendFlags |= c.ImGuiBackendFlags_PlatformHasViewports; // We can create multi-viewports on the Platform side (optional)
if (false and @hasField(c, "GLFW_HAS_GLFW_HOVERED") and builtin.os == builtin.Os.windows) {
- io.*.BackendFlags |= ImGuiBackendFlags_HasMouseHoveredViewport; // We can set io.MouseHoveredViewport correctly (optional, not easy)
+ io.*.BackendFlags |= c.ImGuiBackendFlags_HasMouseHoveredViewport; // We can set io.MouseHoveredViewport correctly (optional, not easy)
}
io.*.BackendPlatformName = "imgui_impl_glfw.zig";
@@ -166,8 +166,8 @@ fn UpdateMonitors() void {
var w: c_int = undefined;
var h: c_int = undefined;
c.glfwGetMonitorWorkarea(glfw_monitor, &x, &y, &w, &h);
- monitor.*.WorkPos = ImVec2{ .x = @intToFloat(f32, x), .y = @intToFloat(f32, y) };
- monitor.*.WorkSize = ImVec2{ .x = @intToFloat(f32, w), .y = @intToFloat(f32, h) };
+ monitor.*.WorkPos = c.ImVec2{ .x = @intToFloat(f32, x), .y = @intToFloat(f32, y) };
+ monitor.*.WorkSize = c.ImVec2{ .x = @intToFloat(f32, w), .y = @intToFloat(f32, h) };
}
if (false and c.GLFW_HAS_PER_MONITOR_DPI) {
// Warning: the validity of monitor DPI information on Windows depends on the application DPI awareness settings,
diff --git a/src/main.zig b/src/main.zig
index ba1c92e..e3eb3dd 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -7,92 +7,103 @@ const glfw_impl = @import("glfw_impl.zig");
const gl3_impl = @import("gl3_impl.zig");
fn errorCallback(err: c_int, description: [*c]const u8) callconv(.C) void {
- panic("Error: {}\n", .{ description });
+ _ = err;
+ panic("Error: {s}\n", .{description});
}
-var window: *c.GLFWwindow = undefined;
-
-fn handleStuff(path: [*c]const u8, x: i32, y: i32) callconv(.C) bool {
- return true;
-}
-
-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_DEBUG_CONTEXT, debug_gl.is_on);
- c.glfwWindowHint(c.GLFW_OPENGL_PROFILE, c.GLFW_OPENGL_CORE_PROFILE);
- // 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, "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 |= c.ImGuiConfigFlags_NavEnableKeyboard;
- io.*.ConfigFlags |= c.ImGuiConfigFlags_DockingEnable;
- // io.*.ConfigFlags |= c.ImGuiConfigFlags_ViewportsEnable;
-
- const style = c.igGetStyle();
- c.igStyleColorsDark(style);
-
- if (false and io.*.ConfigFlags & @enumToInt(c.ImGuiConfigFlags_ViewportsEnable) != 0) {
- style.*.WindowRounding = 0.0;
- style.*.Colors[@enumToInt(c.ImGuiCol_WindowBg)].w = 1.0;
+pub usingnamespace c;
+
+pub const Window = struct {
+ window: *c.GLFWwindow,
+ context: *c.ImGuiContext,
+
+ pub fn init() Window {
+ _ = c.glfwSetErrorCallback(errorCallback);
+
+ if (c.glfwInit() == c.GL_FALSE) {
+ panic("GLFW init failure\n", .{});
+ }
+ errdefer 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_DEBUG_CONTEXT, debug_gl.is_on);
+ c.glfwWindowHint(c.GLFW_OPENGL_PROFILE, c.GLFW_OPENGL_CORE_PROFILE);
+ // 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;
+ const window = c.glfwCreateWindow(window_width, window_height, "ImGUI Test", null, null) orelse {
+ panic("unable to create window\n", .{});
+ };
+ errdefer c.glfwDestroyWindow(window);
+
+ c.glfwMakeContextCurrent(window);
+ c.glfwSwapInterval(1);
+
+ const context = c.igCreateContext(null) orelse panic("ImGui init failure\n", .{});
+ errdefer c.igDestroyContext(context);
+
+ const io = c.igGetIO();
+ io.*.ConfigFlags |= c.ImGuiConfigFlags_NavEnableKeyboard;
+ io.*.ConfigFlags |= c.ImGuiConfigFlags_DockingEnable;
+ // io.*.ConfigFlags |= c.ImGuiConfigFlags_ViewportsEnable;
+
+ const style = c.igGetStyle();
+ c.igStyleColorsDark(style);
+
+ if (io.*.ConfigFlags & c.ImGuiConfigFlags_ViewportsEnable != 0) {
+ style.*.WindowRounding = 0.0;
+ style.*.Colors[c.ImGuiCol_WindowBg].w = 1.0;
+ }
+
+ glfw_impl.Init(window, true, glfw_impl.ClientApi.OpenGL);
+ errdefer glfw_impl.Shutdown();
+
+ gl3_impl.Init();
+ errdefer gl3_impl.Shutdown();
+
+ return .{
+ .window = window,
+ .context = context,
+ };
}
- glfw_impl.Init(window, true, glfw_impl.ClientApi.OpenGL);
- defer glfw_impl.Shutdown();
+ pub fn deinit(self: *const Window) void {
+ gl3_impl.Shutdown();
+ glfw_impl.Shutdown();
+ c.igDestroyContext(self.context);
+ c.glfwDestroyWindow(self.window);
+ c.glfwTerminate();
+ }
- gl3_impl.Init(); // #version 150
- defer gl3_impl.Shutdown();
+ pub fn shouldClose(self: *const Window) bool {
+ return c.glfwWindowShouldClose(self.window) == c.GL_TRUE;
+ }
- const start_time = c.glfwGetTime();
- var prev_time = start_time;
+ pub fn beginFrame(self: *const Window) !void {
+ _ = self;
- while (c.glfwWindowShouldClose(window) == c.GL_FALSE) {
c.glfwPollEvents();
try gl3_impl.NewFrame();
glfw_impl.NewFrame();
c.igNewFrame();
+ }
- // main part
- c.igShowDemoWindow(null);
-
+ pub fn endFrame(self: *const Window) void {
c.igRender();
var w: c_int = undefined;
var h: c_int = undefined;
- c.glfwGetFramebufferSize(window, &w, &h);
+ c.glfwGetFramebufferSize(self.window, &w, &h);
c.glViewport(0, 0, w, h);
c.glClearColor(0.0, 0.0, 0.0, 0.0);
c.glClear(c.GL_COLOR_BUFFER_BIT);
gl3_impl.RenderDrawData(c.igGetDrawData());
- // 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.glfwSwapBuffers(self.window);
}
-}
+};
generated by cgit v1.2.3 (git 2.25.1) at 2026-05-21 00:46:46 +0000