Imgui scaling

Imgui scaling. e. I start it at the start of OnGui and close it at the end if I want to autoscale. I mmediate M ode G raphical U ser I nterface for C#. We will load this image: (Right-click to save as MyImage01. This essentially renders imgui at 96 DPI. Well, nevermind it works as expected, i just had some weird counts before. cpp backend ? Nov 2, 2023 · ImGui Transform Component with RBG for XYZ than can be used for position, rotation and scaling components - ImGuiTransformUI. For example if you set the scale to 300%, then a screen coordinate will correspond to 3x3 physical pixels May 28, 2023 · See. cpp, imgui*. The problem I'm facing is that this doesn't address the actual size and position of the ImGui windows. Manually scaling display size and mouse input in imgui_impl_osx. Dear ImGui is about making things that are simple, efficient, and powerful. Apr 17, 2024 · About the IMGUI paradigm. The ImGuiImpl. g. 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%. I can’t read text on the window either. y * 2. ScaleAllSizes (). SECOND EDIT: Never mind, this isn't needed. This is easily fixed by getting the DPI scale of the monitor (SDL_GetDisplayDPI(. It demonstrates all the widgets, together with an example code on how to use them. It aims to provide a first-class API that ImGui fans will love. I. Two suggestions: You could remove the std::vector and use window->DrawList->PathLineTo(). 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. Copy the following files from the sample project to your project: The imgui folder — to the source/ folder. An example : I am drawing a line from 0, 0 to 200, 200. y, 720) position. I'm aware of the existing threads and issues, e. cpp Operating System: Mac/Win. 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. 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. h. You may call ImGui::ShowMetricsWindow () to explore active draw lists and visualize/understand how the draw data is generated. We'll need to import imgui-rs, imgui-wgpu, and imgui-winit-support. Theoretically, this line should always have a 45 degrees angle to the Jan 15, 2024 · High-DPI with HelloImGui and ImGui Bundle. Dear ImGui is one possible implementation of an idea generally described as the IMGUI (Immediate Mode GUI) paradigm. 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. if you want your app to use High DPI or generally be DPI aware) you may use this helper function. 81 Windows, DX12 version. More info See in Glossary System. DisplayFramebufferScale;. 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. BeginHorizonal / Vertical, and GUILayout. io. Note: The only workaround I found is to duplicate the same gray pixel value for red/green/blue components. Reload to refresh your session. /* Example level loader */. Most notably ScaleAllSizes is problematic for a couple of reasons: It's destructive. 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. This guide will have us load an image file from disk and display it in a Dear ImGui window. ) UImGui (Unity ImGui) is an UPM package for the immediate mode GUI library using ImGui. This PR is a workaround for that. 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. This is an old API! For correct scaling, prefer to reload font + rebuild ImFontAtlas + call style. I've found various discussions on the topic but all of them are pretty confusing. and then add rect with those values as positon and dimension of a rect. y / scale. It won't work perfectly until we switch to a dynamic atlas for fonts and rasterize fonts when needed. In this example, we'll decompress the image into RGBA a image. To run this demo in your browser, launch ImGui Manual. See comment below. 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. If it is a class type, you can make that imgui. 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. io for which we used WPF. 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. 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. that is how imgui looks like when resolution is 1280x720 . eliasdaler mentioned this issue Mar 20, 2021. Under Windows scaling would simply be dpi/96, but I have no enough experience with Mac or Linux, hence, no proposal. Feb 14, 2021 · I think you might actually need to do it in-between ImGui_ImplWin32_NewFrame and ImGui::NewFrame. x / scale. I am trying to make a simple ImGui Win32 app with Visual C++ . ImGui project. y. x. 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. #. x / 1280, displaySize. As title, we render to a surface twice the window dimensions. Everything is possible really. cpp files into your existing project. Tip. See Funding & Sponsors page. Having said that. IMGUI_API void SetWindowFontScale (float scale); // per-window font scale. cpp | wc -l. Depends mostly on what the value type you're passing a pointer to is. I modified the example code and am using that as a base for my project. No specific build process is required. 0)); scales the GUI but running on a 640x 480 resolution, the GUI is still out of the screen. jpg, 20,123 bytes) This is generally done in two steps: Load image from the disk into RAM. Refer to existing node editors and e. Is it possible to achieve that directly though ImGui without having to modify imgui_impl_dx9. My question is specifically about using ImGui::DockSpaceOverViewport. 19" imgui-winit-support = "0. 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). identity, Vector3. I have Dear ImGui configured for high DPI using ImGui_ImplWin32_EnableDpiAwareness() and using font scaling as per the documentation. here and the example code in imgui_demo. What i mean by that is even on this thread where most of people on unknowncheats post is ImGui screenshot. 7" imgui-wgpu = "0. width); has the same results (number). The provided template contains the necessary Docker container with Dear ImGui, Catch2 Aug 3, 2019 · In 2019. NET. . size. Adjust IO. We can invoice and accommodate to many situations. 25f. An important thing to note here is that I've used version 1. 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. https: IMGUI sends the event to your GUI code, and the controls you invoke respond by calling IMGUI layout functions - GUILayoutUtility. I was involved with tooll. feature/hidpi-support branch. For example, if I do ImGui::Text("HelloWorld"); I would like to control the spacing between the lines "Hello" and "World". Here is the code that I got: // Setting the height value to disable the auto align axis ImGui::BeginChild ( "test child", ImVec2( 0. Please note that windows application needs explicit enabling of dpi awareness. Runs an application whose params and Gui are provided by runnerParams. using. Contribute to emilk/imgui_software_renderer development by creating an account on GitHub. The code in imgui. But the value is only being inherited from an immediate parent (not the whole window set up to the root). more using your code if I did explain it wriedly. No body actually post settings for it. // Important: This operation is lossy Oct 20, 2005 · print ( Screen. Get started with ImGui. 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. Scaling the fonts is done separately and is up to you. This project use FreeType as default renderer. FontGlobalScale and ImGui::GetStyle(). Most components have their size derived from the size of size of the text + FramePadding, e. We embed it in the source code so you can use Dear ImGui without any file system access. Feb 14, 2015 · Heck, I'm looking into buying a Mac now to get toward settling some of the recurrent scaling/dpi issues. My Issue/Question: On Windows, with a 4K display, using SDL + GL3 backends, I get a tiny view of ImGui. The Immediate Mode GUI paradigm may at first appear unusual to some users. cpp Feb 12, 2019 · keroyan commented on May 7, 2021. basemat file — to the data/ folder. 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". 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. May 23, 2023 · This is all handled by your rendering backend. Unity’s IMGUI controls make use of a special function called OnGUI (). With the IMGUI my code contains the following short classes I created myself AutoScroller - for scrolling texts, buttons, and selectiongrids. That's fully related to imgui. width / 1920. 17+, all ImGUI text output is very blurry compared to when using the OpenGL 2 backend. 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(). ImPlot is well suited for visualizing program data in real-time or creating interactive plots, and requires minimal code to integrate. 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. You signed in with another tab or window. 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. window backingScaleFactor]; Feb 9, 2019 · On Linux, egrep -Hr scale 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. Added comments about the right way to scale your UI. FontGlobalScale if you want to scale all windows. See Style Editor to understand how size affect widgets. Dec 13, 2015 · ocornut commented Dec 13, 2015. 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. And that is what ImFontConfig::Density is for. 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. This project is based on RG. 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). cpp | tail -5. 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%. cpp Compiler: MSVC Operating System: Windows. 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. Just upgraded to 1. current. You can add the . 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. 0f; // must be 1. I will add that to my todo list. So far I am very very happy to have replaced this with imGUI. Equivalent to imgui. Jun 2, 2023 · Still doesn't work. It is your responsibility to get textures uploaded to your GPU. I can see the text is created big in the glyph atlas and if I scale it down its shown at smaller sizes. returns: // To scale your entire UI (e. h where at line 53 WINVER is defined because declared before windows. Hello ImGui. 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. returns 38, and after reading a bit, head -1122 imgui. This worked well until a few revisions ago (probably a change yesterday). mm fixes the problem: ImGuiIO& io = ImGui::GetIO(); const float dpi = [view. You signed out in another tab or window. 0f ), true); ImGui::BeginGroup (); A Software Renderer for Dear ImGui. height/1200, 1. For example the padding I am experimenting with free HDPI scaling for imgui. 90. 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. The app has to maintain two sets of styles: the current style with DPI scaled sizes and original non-scaled style. I've excluded some dependencies for brevity. For DPI awareness you can load/reload your font at different scale, and scale your Style with style. ocornut added backends drawing/drawlist labels May 23, 2023. 0, Screen. Dec 23, 2019 · Back-ends: imgui_impl_win32. 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. He is asking for how to modify font size not to write a cheat. ( Screen. GUIMatrix - for auto scaling. Dec 23, 2016 · For me that was not a big deal since ImGui is a open library. You switched accounts on another tab or window. The only issue I have encountered is in file win32_platform. Feb 1, 2024 · Dear ImGui comes with a complete demo. 0, 10. , so please do tell me if this isn't the place to ask a question like this. When you call Image () all ImGui does is to generate a draw call with two triangles creating that rectangle. ScaleAllSizes(). The docs in the demo says: I did try the ScaleAllSizes but it doesn't work correctly. 1 Apr 1, 2021 · Im trying to draw an image using the AddImageQuad primitive. 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. When rendering - set up projection matrix at full resolution ({resolution_x, resolution_y}). Thank you in advance for your time! Integrating the Dear ImGui C++ sample into your project requires you to perform the following steps. Dear ImGui is built to be efficient and scalable toward the needs for AAA-quality applications running all day. If your company uses Dear ImGui, please reach out. Application parameters. 1 C++ project that incorporates the Dear ImGui graphical user interface library. Also I am not sure whether this is the correct place to ask this question. zero, Quaternion. What I wanted to accomplish is if the resolution is 640 Implementation. 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. You can cherry pick patch to ImGui & FreeType atlas builder that add ImFontConfig::Density support from my. 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. Image Dec 31, 2022 · A fully completed menu with a resolution change for windows 10, 11, mac. imgui. Apr 27, 2024 · But here are some of the basics you'll need to get started. You can use ImDrawList::AddCallback () function to send renderer-dependant calls to manipulate your renderer state, if any useful. Btw there is a FontGlobalScale setting you can use BUT it doesn't affect the Padding fields. Jul 2, 2020 · Dear ImGui doesn't handle HiDPI scaling automagicaly, so you should do it manually. This is the workaround: Code (CSharp): float windowsScale = 1. Dec 22, 2015 · IMGUI sends the event to your GUI code, and the controls you invoke respond by calling IMGUI layout functions - GUILayoutUtility. h files — to the source/ folder. Jun 24, 2018 · Thanks for posting those! Added this thread to the wiki index. cpp. IMGUI_API constchar*GetKeyName(ImGuiKey key);// [DEBUG] returns English name of the key. They are all the files in the root folder of the repository (imgui*. IMGUI_API void SetWindowFontScale ( float scale); // [OBSOLETE] set font scale. FramePadding. What's the math behind that? It was still a little off when i tried. The fun fact about that is, i dont understand why people are "afraid" to share their settings with the community. DisplaySize = {resolution_x, resolution_y} / io. FontGlobalScale if you want to scale all windows IMGUI_API void SetNextWindowPos ( const ImVec2 & pos , ImGuiCond cond = 0 ); // set next window position. Jun 12, 2019 · Because I see non-100% dpi scale there. 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. If your company is using Dear ImGui, please consider reaching out. I'm also using the framework crate I've created for showcases to simplify setup. Nov 27, 2021 · Compiler: Apple Clang. call before Begin() . Nov 20, 2021 · Besides, I couldn't find amongst ImGui::Image() arguments any parameter that pertains to image's number of channels. 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. 72 update made a change to window font scale: Fixed old SetWindowFontScale() api value from not being inherited by child window. 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. and that is how it looks when resolution is 1920x1017. 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%. My Issue/Question: I would like to be able to add additional spacing to lines rendered from fonts. When using the SDL_Renderer backend for SDL 2. We don't have this official storage yet e. ImPlot is an immediate mode, GPU accelerated plotting library for Dear ImGui. h). COMRADE in its incomplete state Jan 12, 2023 · Font scaling is currently a large can of worm in dear imgui land. Code (csharp): GUI. Three signatures are provided: HelloImGui::Run(RunnerParams &): full signature, the most customizable version. Dear ImGui: Using Fonts. GetRect(), GUILayout. YouTube Tutorial This project was built as part of this 25 minute YouTube tutorial . The OnGUI () function gets called every frame as long as the containing script is enabled - just like the Update () function. 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. 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. 0. 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). Unity currently supports three UI systems. TRS ( Vector3. What ever size imgui application has, imgui widget window size do not change. Using imgui 1. the height of a button is typically FontSize + style. Start3D2D ( pos, angles, scale, distanceHide, distanceFadeStart) Start 3D2D context on an entity. I created a Spotify clone with about 50% of the UI elements, and rendering a single frame was in the microsecond range. 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. Note: Oversampling afaik is here to fight artifacts on small fonts rendered with stb_truetype. imgui = "0. The data/imgui. Jul 29, 2019 · Recent 1. 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. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. HelloImGui::Run () will run an application with a single call. ) / 96. (i guess also on macos) Not sure if the window spliting can be made without decoration. 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. imgui/imgui. HelloImGui and Dear ImGui Bundle provides a dedicated API for High-DPI handling. 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. 7". The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. 0f. Set window size and DPI scaling based on display * Create window as 75% of the primary display size * Only set DPI scaling to 1. This is my approach: Render imgui with io. Just like ImGui, it does not burden the end user with GUI state Mar 17, 2021 · Back-ends: imgui_impl_opengl3. Version/Branch of Dear ImGui: Version: Latest Branch: master. position. ttf' (by Tristan Grimmer), a 13 pixels high, pixel-perfect font used by default. cpp + imgui_impl_sdl. enter image description here. Author. Previously, I was setting ImGuiIO::DisplaySize to the dimensions of our surface & that was rendering correctly. The same thing happens when I load a grayscale image directly with ImGui::Image() and again set the format to GL_RED. Screenshots/Video. I’m settings io. FontGlobalScale if you want to scale all windows Adjust IO. return a count, most often 0 or 1 but might be >1 if RepeatRate is small enough that DeltaTime > RepeatRate. Operating System: MacOS Monterey. mousePosition by 1. For each widget, you will see the corresponding demo code (in C++. My Issue/Question: Hello I'm pretty new to ImGui and C++ in general, so please do forgive me if this question is irritating. so for the moment, its the best trick i found. cpp + imgui_impl_dx11. Feb 20, 2018 · You signed in with another tab or window. 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. Dear ImGui is funded by your contributions and needs them to sustain and grow. 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. This structure is evident in the following example. the font size 16 looks exactly the same on 100% and 200% scale. IMGUI controls themselves are very simple in structure. Posted on July 30, 2022 — Updated January 8, 2024 The final application that will be built in this post. On my Windows 11 desktop everything works perfectly (see below): Mar 13, 2017 · What you need is to increase resolution of generated font atlas. By debugging, I can see that the height is correct inside ImGui::EndChild; however, the height of the window does not change. Nov 23, 2017 · Overall, imgui is a completely viable approach to creating a GUI that responds fast and does not drain the battery. May 15, 2022 · A sample Unreal Engine 5. matrix = Matrix4x4. 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. 25f if using 125%. cpp and ImGuiImpl. 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. HelloImGui::Run(const SimpleRunnerParams&) : Runs an application, using IMGUI_API intGetKeyPressedAmount(ImGuiKey key,float repeat_delay,float rate);// uses provided repeat rate/delay. Let's say we have a slider for changing the DPI scale. Line 372 in 7e03ae3. cpp embeds a copy of 'ProggyClean. 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. Then you need to scale your size by the same ratio you altered the UV coordinates. 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. 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. _ImGuiStyle_ScaleAllSizes(self, scale_factor); API docs for the ImGuiStyle_ScaleAllSizes function from the imgui_dart library, for the Dart programming language. ti cl cj ye xa av xs po jx hl