Questions tagged [glfw]
GLFW is a cross-platform library for creating and interacting with windows with an OpenGL context.
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How to design an EventBus(guided by the pub/sub pattern)
I'm working on my game engine, and was faced with the fact, that i don't know how properly design an event system. As a pattern i choose Pub/Sub with an event bus, but i don't know where i should '...
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Why opengl code in a lib doesn't renderer?
I am experimenting with opengl using c99 on windows and vs 2022 i tried to create an window using glfw in one project and put a function that supposed to generate a texture in another project that is ...
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How to install game with dependencies on Linux?
I am creating a game using C and some libraries. I wish to not require my users to download anything but the game as most games are self contained. What is the usual process for compiling and ...
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Force even window dimensions
Force even resolution window
I am using GLFW/glfw3 OpenGL to write 2D games.
Some of my shaders have artifacts that only appear when the window size has an odd value. Eg 1201 by 1024 creates artifacts....
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ImGui docking window flickers when dragged out
I'm having problems when every time my ImGui docking window is dragged out
it starts to flicker and malfunctions.
Is there any ways I can get rid of this problem?
Thank you!
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Rotate game object to the mouse pointer
I am making a game from scratch using OpenGl and GLFW. Since my motivation is to learn computer graphics, I am using my own explicit math functions for rotation and translation. My current rotation ...
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Python GLFW and PyOpenGL: How to update a VBO from a thread while rendering at the same time
I'm really new to this community. I'm sorry for any mistakes in advance.I'm making a game like minecraft with GLFW and OpenGL. The problem is, I just can't render a VBO while I update it from another ...
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Why does speed times delta-time give slow movement?
I'm using glfw's glfwGetTime() function to calculate my time between frames i.e deltaT but when I multiply my desired movement ...
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How to properly terminate an openGL application?
I use GLFW in C++.
I close my application the following way:
...
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why is reported screen size smaller than display size with GLFW full screen window
I'm using GLFW to create a full screen GL application. I'm running it on my Ubuntu 20.04 laptop that has a typical 1920:1080 display, at least that's the screen resolution reported under Settings->...
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Why is my OpenGL code not rendering anything?
I have been following the LearnOpenGL Hello Triangle tutorial, and nothing is rendering except the clear color.
Any help finding what is wrong would be appreciated.
Using LWJGL 3.2.3 OpenGL and GLFW ...
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Why would I want to set a minimal OpenGL version before creating the context?
Typical GLFW applications have these lines after glfwInit():
...
user147561
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set model to transparent where texture is transparent
I finally got around to applying textures to my game, and I noticed that the areas that are transparent on the .png of the texture are not transparent on the actual model.It is illustrated in the ...
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Having trouble with 2d projection (Opengl)
I need to change the normalize coords from -1 to 1 to the width and height of my application. The reason why I want to change the normalize coords is because i think it would be a easier set position ...
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Memory Usage Issue with declared variables (when swapping between states)
So my problem is that When I make a Shader variable and I swap between mainmenustate and gamestate really fast I notice my memory usage increase alot but as soon I switch my Shader varaible into a ...
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GLFW Problem "The driver does not appear to support OpenGL"
I am trying to learn OpenGL & GLFW , when I run this simple project
I get error ID : "65542" with the message "The driver does not appear to support OpenGL".
My graphics card ...
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Does swap buffer with vsynch guarantee synchronization?
I was wondering if I could assume that all buffer related GPU operations such as:
glDrawElements
glBufferData
glSubBufferData
glUnmapBuffer
are guaranteed to be completed after swap buffer is ...
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Access GLFW functions from DLL
My game uses DLLs as mods. Players can write DLLs which can render, play audio, print to console, etc. This works fine, however when I try to access GLFW functions, they don't seem to work properly.
<...
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glfw resizing causing image scaling
I have a quad rendered that extends from the top left of the window to with width of the window that is also 64 pixels high. When I resize the window, from its initial size, the quad and text scales ...
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Stuttery camera with mouse movement
I'm implementing a framerate independent FPS camera and I'm having a problem with jerky camera. The camera is smooth if I translate it or if I make it rotate at a fixed rate, but as soon as I start to ...
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LWJGL GLFW hangs on native glfwInit call
For the past months I've been working on creating my own game engine for personal use in LWJGL using pieces here and there, especially from developer ThinMatrix's rightfully credited code, to learn as ...
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Parts of OpenGL rendering area missing/transparent until resize
I am having a weird transparency issue when running my game in windowed mode. Parts of the window, left and top parts in normal window mode, right and bottom when in maximised window, become ...
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Transform the mouse coordinates to the GLSL plane
I am creating a 2D map editor in C ++ with GLFW. I want move and drag entities with the mouse, but I have a problem, the mouse coords are in the window size range (1200, 720) and the entity is in the ...
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Subtract a circle on a rectangle - OpenGL
I am writing a game using GLFW, GLEW, GLM and Bullet3 in C++. Its a Maze with holes. I am doing the floor with rectangles (wich is 2 GL_TRIANGLES).
I want to make some woles (circles), to the ball ...
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glfwCreateWindow function returning NULL
I am working on creating a game engine using GLFW. To begin, I set up a window class in C++ to test how making a window works. For some reason, when I call the glfwCreateWindow function, it returns ...
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How to render in a imGui Window
I am learning OpenGL by glfw3 lib and I am using imgui to make a interesting application.
However, I can not render what I want in a imgui window.
I searched google and get below link:
Render in a ...
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Building a flexible GLFW Event handling system (for beginners)
The 2017 Thread "How to improve my input handling in GLFW?" is brilliant! Exactly my question and what seems like some great solutions.
However "Tyyppi_77" is hard for me to understand as a ...
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Debug in OpenGL & GLFW (version >= 4.3)
I try enable debug system in OpenGL with helps debug output in OpenGL version >= 4.3. My code:
...
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OpenGL viewport is stretched
For this project I am using GLFW, glad and glm.
My window looks like this:
The dimensions of the window are correct, but the viewport is stretched, making my square into a rectangle.
How do I use a ...
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GLFW window becomes unresponsive when asking for input!
I am trying to write a simple C++ game using OpenGL. In my render loop i ask for text based input from the user but this causes the GLFW window to become unresponsive. I suspect that this happens ...
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JWJGL Multi-threading to separate update and render
Introduction:
I am currently designing a game in Java using the LWJGL 3.0, with Gradle. I have quite an advanced knowledge on multi-threading, and I am aware how GLFW does/doesn't implement multi-...
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Set / Get UserPointer - What Do They Do?
I see a lot of talk about glfwGetWindowUserPointer() and glfwSetWindowUserPointer() but I can't for the life of me understand what these functions actually do.
From http://discourse.glfw.org/t/what-...
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OpenGL 2D Game Render Help
I just recently started using C++ and OpenGL and I am running into an issue. I am not totally sure what I am doing so could you please tell me what I am doing wrong and what I could improve?
Here is ...
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Unresolved external symbol linker errors when including stb_image.h
I get the following errors:
LNK2019 unresolved external symbol _stbi_load referenced in function _main
LNK2019 unresolved ...
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Full-screen window hangs when debug break or crash (Windows/GLFW/Cocos2D)
I run into an issue if my game application becomes unresponsive when running in fullscreen on Windows. This mostly applies when I want to use breakpoints in Visual Studio, however if the application ...
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Flickering / tearing with glfwSwapBuffers
I recently separated my logic and rendering threads to fix this problem:
GLFW window freezes on title bar hold/drag
This means the logic and rendering are no longer running in lock-step as they were ...
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Multiple Viewports/Windows Dear IMGUI c++
How do I use IMGUI with multiple GLFW windows? I know Dear IMGUI already has a virtual viewport system going in the viewport branch but I found that to be lacking a bit on how to use this new system.
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How can I tell in code if vsync is disabled on desktop PC?
My game needs to behave differently to get the best performance if the user disables vsync globally (basically, I need to change the scheduling on my housekeeping operations).
Is there a graphics ...
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Problem with rotation a camera with the mouse OPENGL GLFW
I am trying to move my camera with my mouse, I can translate it juste by changing the current position of my camera, but when I want to move my forward vector and my up vector of my camera it doesnt ...
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Unresolved external symbol _glad_XXX
I am relatively new to C++ but I have a few years of java experience. I decided to try to make a game with C++, In contrast with the handful of games i have written in Java with lwjgl. I am having a ...
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Cannot open include file: 'linmath.h'
I have set up GLFW and GLAD in Visual Studio 2017 as follows:
I created in C: directory folder GLFW-GLAD, and put in there, "glfw" (Windows pre-compiled binaries, 32-bit Windows binaries) as well "...
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Drawing many separate lines using mouse OpenGL(GLFW/glad)
So, in order to draw a line, I track the coordinates of the mouse, then I add them to the array and capture it as GL_LINE_STRIP_ADJACENCY. However, for example, I completed drawing a line1 at P1 and ...
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GLFW - Camera rotation system
I need to make a camera rotation system similar to the one here
http://madebyevan.com/webgl-path-tracing/
To rotate, press the Left mouse button and drag. So far I figured a basic idea of how this ...
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How to scale-to-fit OGL viewport to GLFW window?
Say my window is 1280x720. I want to render my stuff to lower resolution and then stretch it to window. I've tried this:
glViewport(0, 0, 1280 / 2, 720 / 2);
...
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Cross-platform GLFW build with CMake
I know this is probably a popular question and can be very vague, so I'm going to be as specific as possible. I don't really know how to even form this question to be able to search Google, so I came ...
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GLFW shift key not behvaing like other keys
I am using GLFW 3.2.1
Currently I am implementing a camera. For the vertical controls I am using space to go up and shift to go down.
For all other keys, pressing the key results in the section of ...
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Unintended stuttering when moving camera
I am using opengl and GLFW to make a rendering engine.
Things work per se, but there is some weird flickering happening when I move the camera.
Due the nature of the problem I need to link a ...
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GLFW- Help implementing glBufferedData
Good Morning,
I've been trying to learn some OpenGL by following the tutorials on learnopengl.com and I've hit a bit of a snag. I'm trying to implement the same functionality as the "Hello Triangle" ...
