45 lines
1.2 KiB
Zig
45 lines
1.2 KiB
Zig
const gui = @import("gui.zig");
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const backend_glfw = @import("backend_glfw.zig");
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pub fn initWithGlSlVersion(
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window: *const anyopaque, // zglfw.Window
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glsl_version: ?[:0]const u8, // e.g. "#version 130"
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) void {
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backend_glfw.initOpenGL(window);
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ImGui_ImplOpenGL3_Init(@ptrCast(glsl_version));
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}
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pub fn init(
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window: *const anyopaque, // zglfw.Window
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) void {
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initWithGlSlVersion(window, null);
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}
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pub fn deinit() void {
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ImGui_ImplOpenGL3_Shutdown();
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backend_glfw.deinit();
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}
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pub fn newFrame(fb_width: u32, fb_height: u32) void {
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backend_glfw.newFrame();
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ImGui_ImplOpenGL3_NewFrame();
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gui.io.setDisplaySize(@as(f32, @floatFromInt(fb_width)), @as(f32, @floatFromInt(fb_height)));
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gui.io.setDisplayFramebufferScale(1.0, 1.0);
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gui.newFrame();
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}
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pub fn draw() void {
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gui.render();
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ImGui_ImplOpenGL3_RenderDrawData(gui.getDrawData());
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}
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// Those functions are defined in 'imgui_impl_opengl3.cpp`
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// (they include few custom changes).
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extern fn ImGui_ImplOpenGL3_Init(glsl_version: [*c]const u8) void;
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extern fn ImGui_ImplOpenGL3_Shutdown() void;
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extern fn ImGui_ImplOpenGL3_NewFrame() void;
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extern fn ImGui_ImplOpenGL3_RenderDrawData(data: *const anyopaque) void;
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