Imgui scaling

Imgui scaling. ImGui project. My Issue/Question: On Windows, with a 4K display, using SDL + GL3 backends, I get a tiny view of ImGui. 1 Apr 1, 2021 · Im trying to draw an image using the AddImageQuad primitive. returns: // To scale your entire UI (e. Feb 14, 2021 · I think you might actually need to do it in-between ImGui_ImplWin32_NewFrame and ImGui::NewFrame. Dec 23, 2019 · Back-ends: imgui_impl_win32. Please note that windows application needs explicit enabling of dpi awareness. cpp and ImGuiImpl. Note: The only workaround I found is to duplicate the same gray pixel value for red/green/blue components. SECOND EDIT: Never mind, this isn't needed. Let's say we have a slider for changing the DPI scale. 3 there is a menu point in the Edit/Preferences/UI Scaling/Use custome scaling value where you can select from multiple values from 100% to 350%. My question is specifically about using ImGui::DockSpaceOverViewport. _ImGuiStyle_ScaleAllSizes(self, scale_factor); API docs for the ImGuiStyle_ScaleAllSizes function from the imgui_dart library, for the Dart programming language. Just like ImGui, it does not burden the end user with GUI state Mar 17, 2021 · Back-ends: imgui_impl_opengl3. mousePosition by 1. The same thing happens when I load a grayscale image directly with ImGui::Image() and again set the format to GL_RED. On my Windows 11 desktop everything works perfectly (see below): Mar 13, 2017 · What you need is to increase resolution of generated font atlas. EndHorizontal / Vertical, amongst others - which IMGUI records, effectively building up a tree of the controls in your layout and the space they require Dec 22, 2022 · 1. Scaling the fonts is done separately and is up to you. , so please do tell me if this isn't the place to ask a question like this. Thank you in advance for your time! Integrating the Dear ImGui C++ sample into your project requires you to perform the following steps. Sep 25, 2019 · I know this is old and closed, but I fixed this in what I think is an easier way (this still seems to be a problem if running inside an application frame (Qt for example) with windows scaling > 100%. DisplaySize = {resolution_x, resolution_y} / io. Read the part "C++ / Python porting advices" to see how easy it is to translate Gui code from C++ On macOS/iOS retina screens, a screen coordinate corresponds typically to 2x2 physical pixels (but this may vary if you change the display scaling) On most Linux distributions, whenever there is a high DPI screen you can set the display scale. 1 C++ project that incorporates the Dear ImGui graphical user interface library. Dear ImGui is funded by your contributions and needs them to sustain and grow. YouTube Tutorial This project was built as part of this 25 minute YouTube tutorial . 19" imgui-winit-support = "0. This guide will have us load an image file from disk and display it in a Dear ImGui window. ImPlot is well suited for visualizing program data in real-time or creating interactive plots, and requires minimal code to integrate. In Windows 10, Display Settings: If you use the Recommended setting of 125% (which it was set to by default), you have to multiply Event. Reload to refresh your session. h. My Issue/Question: Hello I'm pretty new to ImGui and C++ in general, so please do forgive me if this question is irritating. 17+, all ImGUI text output is very blurry compared to when using the OpenGL 2 backend. When using the SDL_Renderer backend for SDL 2. This project is based on RG. Version/Branch of Dear ImGui: Version: Latest Branch: master. See comment below. Start3D2D, except a) pos / angles are automatically transformed from local entity coordinates into world coordinates and b) the entity will be ignored in mouse input collision checks. Thank you! I'm using the following code as wrappers to ImGui::BeginTooltip() and ImGui::EndTooltip() to make sure that tooltips always remain on-screen and unobscured by the mouse cursor. ScaleAllSizes(). 25f. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. Feb 1, 2024 · Dear ImGui comes with a complete demo. DpiScale ImGui::GetDpiScale() because the problem becomes widely more tricky with multi-viewports You can also simply alter the UV parameters of Image/AddImage functions to display less of the image contents. 0. Dec 13, 2015 · ocornut commented Dec 13, 2015. No specific build process is required. cpp + imgui_impl_dx11. cpp Feb 12, 2019 · keroyan commented on May 7, 2021. Runs an application whose params and Gui are provided by runnerParams. call before Begin() . See Funding & Sponsors page. Previously, I was setting ImGuiIO::DisplaySize to the dimensions of our surface & that was rendering correctly. With the IMGUI my code contains the following short classes I created myself AutoScroller - for scrolling texts, buttons, and selectiongrids. (i guess also on macos) Not sure if the window spliting can be made without decoration. It is your responsibility to get textures uploaded to your GPU. Set window size and DPI scaling based on display * Create window as 75% of the primary display size * Only set DPI scaling to 1. size. You signed in with another tab or window. And that is what ImFontConfig::Density is for. Most notably ScaleAllSizes is problematic for a couple of reasons: It's destructive. Jul 2, 2020 · Dear ImGui doesn't handle HiDPI scaling automagicaly, so you should do it manually. ( Screen. It also contains a change in the resolution for any userMy ds group: https://discord Dec 26, 2023 · I'm struggling to create a default docking layout im combination with ImGui::DockSpaceOverViewport. I can pass an image, however, it doesn't seem to want to scale correctly to the viewport which I find most frustrating (below is an image for reference). When you call Image () all ImGui does is to generate a draw call with two triangles creating that rectangle. #. IMGUI_API constchar*GetKeyName(ImGuiKey key);// [DEBUG] returns English name of the key. Under Windows scaling would simply be dpi/96, but I have no enough experience with Mac or Linux, hence, no proposal. mm fixes the problem: ImGuiIO& io = ImGui::GetIO(); const float dpi = [view. It clearly looks like the SDL_Renderer backend is rendering the fonts at half the size internally and upscaling by 2x, resulting in blurring and contrast Aug 18, 2017 · I create window by ImGui::Begin("Render"); ImTextureID tex_id = reinterpret_cast<void *>( static_cast<intptr_t>(gl_texid)); ImGui::Image(tex_id, ImVec2(256, 256 Sep 24, 2018 · I found this here DisplaySize update on OS window resize which shows my problem. 0)); scales the GUI but running on a 640x 480 resolution, the GUI is still out of the screen. The data/imgui. For example the padding I am experimenting with free HDPI scaling for imgui. Dear ImGui is one possible implementation of an idea generally described as the IMGUI (Immediate Mode GUI) paradigm. The funny thing is when I run the Hi! I've recently implemented DPI scaling to my Shinobi engine and I think DPI support in ImGui could be improved. cpp embeds a copy of 'ProggyClean. Apr 27, 2024 · But here are some of the basics you'll need to get started. I am trying to make a simple ImGui Win32 app with Visual C++ . y / scale. Most components have their size derived from the size of size of the text + FramePadding, e. Feb 20, 2018 · You signed in with another tab or window. and that is how it looks when resolution is 1920x1017. Unity currently supports three UI systems. For DPI awareness you can load/reload your font at different scale, and scale your Style with style. He is asking for how to modify font size not to write a cheat. We can invoice and accommodate to many situations. https: IMGUI sends the event to your GUI code, and the controls you invoke respond by calling IMGUI layout functions - GUILayoutUtility. Well, nevermind it works as expected, i just had some weird counts before. Theoretically, this line should always have a 45 degrees angle to the Jan 15, 2024 · High-DPI with HelloImGui and ImGui Bundle. cpp files into your existing project. I've found various discussions on the topic but all of them are pretty confusing. This structure is evident in the following example. Ps: DEBUG = false to turn off debugs println() Mar 21, 2019 · As far as I can see, the recommended way to handle host window (Linux/Windows's windows) resizing is to use ImGui::GetIO(). EndHorizontal / Vertical, amongst others - which IMGUI records, effectively building up a tree of the controls in your layout and the space they require May 30, 2018 · Dear ImGui will generate the geometry and draw calls using the ImTextureID that you passed and which your renderer can use. NET. ) / 96. I can see the text is created big in the glyph atlas and if I scale it down its shown at smaller sizes. The only issue I have encountered is in file win32_platform. cpp Operating System: Mac/Win. I will add that to my todo list. For example if you set the scale to 300%, then a screen coordinate will correspond to 3x3 physical pixels May 28, 2023 · See. I've excluded some dependencies for brevity. You can add the . This essentially renders imgui at 96 DPI. g. primitives are all the time the same size May 22, 2015 · However currently fonts don't really scale in the first place, so it would be inconsistent to have a mechanism that scales icon-in-glyphs. GUIToolTip - auto tooltip that is placed at the end of OnGui and reads guicontent Jul 15, 2022 · Hi, Skey here and this is another video where I teach you how to code you GUIs with Dear Imgui. window backingScaleFactor]; Feb 9, 2019 · On Linux, egrep -Hr scale imgui. IMGUI is a code-driven GUI system, and is mainly intended as a tool for Nov 21, 2023 · model: object position, scale and/or rotation Then in the vertex shader one has either a single uniform called uMVP or two uniforms, one for the projection and view (which are modified less frequently, at least not for each object) and a model matrix which could be different for each object (different positions, scales and or rotations). Is it possible to achieve that directly though ImGui without having to modify imgui_impl_dx9. FontGlobalScale if you want to scale all windows Adjust IO. 7". More info See in Glossary System. if you want your app to use High DPI or generally be DPI aware) you may use this helper function. The ImGuiImpl. FontGlobalScale if you want to scale all windows IMGUI_API void SetNextWindowPos ( const ImVec2 & pos , ImGuiCond cond = 0 ); // set next window position. imgui = "0. The OnGUI () function gets called every frame as long as the containing script is enabled - just like the Update () function. eliasdaler mentioned this issue Mar 20, 2021. y, 720) position. Nov 20, 2021 · Besides, I couldn't find amongst ImGui::Image() arguments any parameter that pertains to image's number of channels. When the DPI changes the original style needs to be copied over the current style before You should refer to those also to learn how to use the imgui library. TRS ( Vector3. What i mean by that is even on this thread where most of people on unknowncheats post is ImGui screenshot. cpp | wc -l. We will load this image: (Right-click to save as MyImage01. that is how imgui looks like when resolution is 1280x720 . This worked well until a few revisions ago (probably a change yesterday). cpp. io. May 23, 2023 · This is all handled by your rendering backend. Tip. Here is the code that I got: // Setting the height value to disable the auto align axis ImGui::BeginChild ( "test child", ImVec2( 0. If your company uses Dear ImGui, please reach out. You switched accounts on another tab or window. 0, Screen. I have had some success with the other code examples in those issues Sep 12, 2021 · By the way the decoration is interesting too, for have split feature (magnetic splitting way) of windows on screen, like we have on win and linux. The Immediate Mode GUI paradigm may at first appear unusual to some users. After scaling the host window up 2x and changing the relevant Dec 31, 2018 · Hello, as many other users, I also want to create a node-based editor with imGui. COMRADE in its incomplete state Jan 12, 2023 · Font scaling is currently a large can of worm in dear imgui land. Contribute to emilk/imgui_software_renderer development by creating an account on GitHub. Hello ImGui. FontGlobalScale and ImGui::GetStyle(). No body actually post settings for it. the font size 16 looks exactly the same on 100% and 200% scale. I was involved with tooll. If your company is using Dear ImGui, please consider reaching out. I mmediate M ode G raphical U ser I nterface for C#. You can use ImDrawList::AddCallback () function to send renderer-dependant calls to manipulate your renderer state, if any useful. There is an official article which shows how to do that https: Mar 17, 2017 · Good Afternoon, I was wondering if it was possible to increase the font size of a button? Just would like to make some things a little easier to read. 7" imgui-wgpu = "0. Nov 23, 2017 · Overall, imgui is a completely viable approach to creating a GUI that responds fast and does not drain the battery. return a count, most often 0 or 1 but might be >1 if RepeatRate is small enough that DeltaTime > RepeatRate. ) UImGui (Unity ImGui) is an UPM package for the immediate mode GUI library using ImGui. 73 WIP of imgui, because it was the most recent at the time when I started to work on this Jun 17, 2019 · If this has been posted/reported before, I apologize. here and the example code in imgui_demo. height/1200, 1. . Feb 14, 2015 · Heck, I'm looking into buying a Mac now to get toward settling some of the recurrent scaling/dpi issues. There's already a vector in there for that purpose and it would have amortized so it'll work with no allocation (whereas your new vector would need to allocate) Jul 30, 2022 · Martin Helmut Fieber GUI Development with C++, SDL2, and Dear ImGui. Adjust IO. Image Dec 31, 2022 · A fully completed menu with a resolution change for windows 10, 11, mac. We embed it in the source code so you can use Dear ImGui without any file system access. IMGUI controls themselves are very simple in structure. But the value is only being inherited from an immediate parent (not the whole window set up to the root). Two suggestions: You could remove the std::vector and use window->DrawList->PathLineTo(). In the GIF below I am calculating the scroll position such that the image pixel position will remain invariant when the image is zoomed in. The “Immediate Mode” GUI system (also known as IMGUI) is an entirely separate feature to Unity’s main GameObject-based UI (User Interface) Allows a user to interact with your application. x / 1280, displaySize. When using High DPI screens, a common issue with ImGui is that windows will appear very small, and text rendering will be very small also. and then add rect with those values as positon and dimension of a rect. Now ImGui::GetWindowSize() is returning several different sizes for even the simplest single I'm at the point now where I'm trying to get the UI in check but something that keeps slowing me down is the passing of a framebuffer texture to an ImGui Image. Due to Dear ImGui issue ocornut/imgui#5301, the font scaling on HiDPI setup (only on macOS) is not correct and results in blurry text. h files — to the source/ folder. The provided template contains the necessary Docker container with Dear ImGui, Catch2 Aug 3, 2019 · In 2019. This is my approach: Render imgui with io. This is easily fixed by getting the DPI scale of the monitor (SDL_GetDisplayDPI(. My Issue/Question: I would like to be able to add additional spacing to lines rendered from fonts. Jul 29, 2019 · Recent 1. FontGlobalScale if you want to scale all windows. position. I can’t read text on the window either. Image vertices are very similar to the ones in the screenshot below, my problem is that the image gets rendered as the one above "Affine" instead of the one above "Correct". ImPlot is an immediate mode, GPU accelerated plotting library for Dear ImGui. 6 if the display is greater resolution than 1440p * Make background darker * Tell Windows that we are DPI-aware Jan 28, 2019 · ImGui::Image(texture, texturesize); ImGui::SetScrollX(500); ImGui::SetScrollY(500); the "500" constant is sufficient to show the issue here when the frame rate is slow enough. BeginHorizonal / Vertical, and GUILayout. imgui/imgui. Three signatures are provided: HelloImGui::Run(RunnerParams &): full signature, the most customizable version. h where at line 53 WINVER is defined because declared before windows. ProggyClean does not scale smoothly, therefore it is recommended that you load your own file when Jul 6, 2022 · Most notably ScaleAllSizes is problematic for a couple of reasons: It's destructive. What's the math behind that? It was still a little off when i tried. Btw there is a FontGlobalScale setting you can use BUT it doesn't affect the Padding fields. cpp, imgui*. basemat file — to the data/ folder. DisplayFramebufferScale;. Apr 17, 2024 · About the IMGUI paradigm. Generic Unity IL2CPP Internal DLL template (includes kiero, imgui, il2cpp resolver etc) - SpookySec/UnityIL2CPPInternalTemplate Dec 13, 2022 · I show how to setup a GUI app based on Dear ImGui and Cpp using Docker. ocornut added backends drawing/drawlist labels May 23, 2023. 0f; // must be 1. What ever size imgui application has, imgui widget window size do not change. Depends mostly on what the value type you're passing a pointer to is. This PR is a workaround for that. Equivalent to imgui. IMGUI_API void SetWindowFontScale (float scale); // per-window font scale. For example, if I do ImGui::Text("HelloWorld"); I would like to control the spacing between the lines "Hello" and "World". The problem I'm facing is that this doesn't address the actual size and position of the ImGui windows. That's fully related to imgui. However, one thing I don’t really understand with imGui, is why it doesn’t use transform matrices for to scroll and zoom the content of child containers. Everything is possible really. Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might require you to readjust some habits before you can realize its full potential. h). We'll need to import imgui-rs, imgui-wgpu, and imgui-winit-support. I have Dear ImGui configured for high DPI using ImGui_ImplWin32_EnableDpiAwareness() and using font scaling as per the documentation. width); has the same results (number). And if I add ImGui::Text("Window DPI scale: %f", ImGui::GetWindowDpiScale()); to a window in the main viewport I get: You didn't specify the OS. using. Dec 23, 2016 · For me that was not a big deal since ImGui is a open library. current. The docs in the demo says: I did try the ScaleAllSizes but it doesn't work correctly. Refer to existing node editors and e. See Style Editor to understand how size affect widgets. cpp Compiler: MSVC Operating System: Windows. IMGUI_API void SetWindowFontScale ( float scale); // [OBSOLETE] set font scale. e. This is an old API! For correct scaling, prefer to reload font + rebuild ImFontAtlas + call style. Get started with ImGui. Unity’s IMGUI controls make use of a special function called OnGUI (). Nov 27, 2021 · Compiler: Apple Clang. Also a lot of them involve rebuilding imgui's fonts, which seems a little weird, since assuming imgui is drawing fonts on textured quads my gut is that the However, the renderer still clips the image: Mouse events are also not handled properly as scaling is not applied to coordinates. What I wanted to accomplish is if the resolution is 640 Implementation. x / scale. Jun 2, 2023 · Still doesn't work. Manually scaling display size and mouse input in imgui_impl_osx. As title, we render to a surface twice the window dimensions. identity, Vector3. By debugging, I can see that the height is correct inside ImGui::EndChild; however, the height of the window does not change. An example : I am drawing a line from 0, 0 to 200, 200. Did you know? The core of Dear ImGui is self-contained within a few platform-agnostic files which you can easily compile in your application/engine. Line 372 in 7e03ae3. This is the workaround: Code (CSharp): float windowsScale = 1. Jun 24, 2018 · Thanks for posting those! Added this thread to the wiki index. I modified the example code and am using that as a base for my project. the height of a button is typically FontSize + style. You may call ImGui::ShowMetricsWindow () to explore active draw lists and visualize/understand how the draw data is generated. // Important: This operation is lossy Oct 20, 2005 · print ( Screen. Application parameters. Using imgui 1. The fun fact about that is, i dont understand why people are "afraid" to share their settings with the community. feature/hidpi-support branch. 0f), and using this value to scale the font: Jul 29, 2018 · It seems to my like it is scaled like: vector2 scale = vector2(displaySize. y. Copy the following files from the sample project to your project: The imgui folder — to the source/ folder. 0f ), true); ImGui::BeginGroup (); A Software Renderer for Dear ImGui. A high-DPI screen could have a physical pixel resolution of 3840x2160, but on this screen the OS will display widgets with a scaling factor of 200%, so that widgets do not look too small on it. FramePadding. Dec 22, 2015 · IMGUI sends the event to your GUI code, and the controls you invoke respond by calling IMGUI layout functions - GUILayoutUtility. x. Added comments about the right way to scale your UI. You signed out in another tab or window. I’m settings io. In this example, we'll decompress the image into RGBA a image. Dear ImGui is about making things that are simple, efficient, and powerful. The app has to maintain two sets of styles: the current style with DPI scaled sizes and original non-scaled style. Oct 27, 2023 · I can easily get a scale factor from GLFW, but I can't figure out how to apply the scale factor to imgui. matrix = Matrix4x4. In ImGui_ImplWin32_UpdateMousePos I added the following code at the end: ` float dpiScale = ImGui_ImplWin32_GetDpiScaleForHwnd(bd->hWnd); Jul 29, 2018 · I would like my renderer to act similar to imgui. y * 2. May 15, 2022 · A sample Unreal Engine 5. I can see, that clipping calculation would Dec 29, 2019 · I am not very familiar with ImGui, just started working with it last week :) In my case the font scale works. It aims to provide a first-class API that ImGui fans will love. I start it at the start of OnGui and close it at the end if I want to autoscale. Author. I created a Spotify clone with about 50% of the UI elements, and rendering a single frame was in the microsecond range. We don't have this official storage yet e. HelloImGui and Dear ImGui Bundle provides a dedicated API for High-DPI handling. ScaleAllSizes (). If it is a class type, you can make that imgui. I'm aware of the existing threads and issues, e. 25f if using 125%. Nov 13, 2022 · You can order a menu of any segment from me in discord: FiveSaven#8087 Jan 8, 2023 · I have a Windows application under development and am using a 4K monitor scaled to 150% for development. jpg, 20,123 bytes) This is generally done in two steps: Load image from the disk into RAM. more using your code if I did explain it wriedly. zero, Quaternion. cpp + imgui_impl_sdl. Operating System: MacOS Monterey. h, therefore, such functions (which exist from Windows 10 onward) don't have a valid signature and Some component such as Button() or Selectable() have explicit size overrides in their paragram. Screenshots/Video. I think there's something with rust's winit crate itself, because if I change the scale factor in OS settings, all the desktop elements are scaled, but the imgui stays the same. On desktop platforms, HelloImGui tries to detect the screen DPI scaling factor, and will then load the font at twice the size if the screen scaling factor is 200%. You can cherry pick patch to ImGui & FreeType atlas builder that add ImFontConfig::Density support from my. so for the moment, its the best trick i found. Having said that. cpp backend ? Nov 2, 2023 · ImGui Transform Component with RBG for XYZ than can be used for position, rotation and scaling components - ImGuiTransformUI. 81 Windows, DX12 version. When rendering - set up projection matrix at full resolution ({resolution_x, resolution_y}). 0, 10. Dear ImGui is built to be efficient and scalable toward the needs for AAA-quality applications running all day. Also I am not sure whether this is the correct place to ask this question. returns 38, and after reading a bit, head -1122 imgui. Aug 23, 2019 · What we are missing is a standard float storage to query that scale for when we need to scale a constant not based on any font or style style, but it's better if you express them as factor of those. Code (csharp): GUI. HelloImGui::Run () will run an application with a single call. 90. Then you need to scale your size by the same ratio you altered the UV coordinates. I'm also using the framework crate I've created for showcases to simplify setup. They are all the files in the root folder of the repository (imgui*. If you like this video and want to support me, leave a Like an May 27, 2021 · EDIT: Specifically, the slider function is used as follows: ImGui::SliderFloat("Label", &myFloat);, where the value of myFloat is both displayed and changed by the slider. Just upgraded to 1. The code in imgui. io for which we used WPF. DisplaySize to 1920, 1080 which is my display size but the window is still getting smaller and I can’t click the buttons after resizing down. Note: Oversampling afaik is here to fight artifacts on small fonts rendered with stb_truetype. 72 update made a change to window font scale: Fixed old SetWindowFontScale() api value from not being inherited by child window. It demonstrates all the widgets, together with an example code on how to use them. For each widget, you will see the corresponding demo code (in C++. To run this demo in your browser, launch ImGui Manual. I noticed a problem, that when I try to resize my host window, the ImGui window gets stretched and the Widgets (also other stuff like lines) are deformed. Hello, I have been working on a menu (for a game cheat) which is using ImGui and I would like to change the font size of certain buttons. 0f. GetRect(), GUILayout. ttf' (by Tristan Grimmer), a 13 pixels high, pixel-perfect font used by default. Dear ImGui: Using Fonts. GUIMatrix - for auto scaling. An important thing to note here is that I've used version 1. It won't work perfectly until we switch to a dynamic atlas for fonts and rasterize fonts when needed. Jun 12, 2019 · Because I see non-100% dpi scale there. enter image description here. Posted on July 30, 2022 — Updated January 8, 2024 The final application that will be built in this post. The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. In order to make font scale properly we'd need to dynamically add to the texture atlas and notify the user to upload dirty texture ranges (like FontStash). I. imgui. /* Example level loader */. This project use FreeType as default renderer. cpp | tail -5. Start3D2D ( pos, angles, scale, distanceHide, distanceFadeStart) Start 3D2D context on an entity. width / 1920. So far I am very very happy to have replaced this with imGUI. HelloImGui::Run(const SimpleRunnerParams&) : Runs an application, using IMGUI_API intGetKeyPressedAmount(ImGuiKey key,float repeat_delay,float rate);// uses provided repeat rate/delay. lm cm hi tr rl jx fu ai dp qa