paddy 4678a544b6
[rcore][glfw] Fix window scaling on Wayland with GLFW 3.4+ (#5564)
* Fix window scaling on Wayland with GLFW 3.4+ display scaling

GLFW 3.4 defaults GLFW_SCALE_FRAMEBUFFER to TRUE on all platforms,
causing framebuffer/window size mismatch on Wayland with display
scaling (content renders in a subset of the window, mouse coordinates
are wrong).

Three fixes:
- Disable GLFW_SCALE_FRAMEBUFFER on Wayland when FLAG_WINDOW_HIGHDPI
  is not set, restoring 1:1 window-to-framebuffer mapping
- With FLAG_WINDOW_HIGHDPI, read actual framebuffer size from GLFW
  instead of resizing the window (which double-scales on Wayland
  where GLFW_SCALE_TO_MONITOR has no effect)
- Skip mouse coordinate scaling on Wayland since GLFW already reports
  coordinates in logical (window) space

Tested on NixOS/Niri with GLFW 3.4 at 1x, 1.5x, and 2x scaling.

Fixes #5504

* Fix fullscreen and borderless windowed scaling on Wayland with HiDPI

ToggleFullscreen and ToggleBorderlessWindowed exit paths manually
scale screen size by DPI before passing to glfwSetWindowMonitor,
which double-scales on Wayland where GLFW_SCALE_FRAMEBUFFER already
handles it. Skip the manual resize on Wayland.

Also fix FramebufferSizeCallback fullscreen branch: on Wayland with
GLFW_SCALE_FRAMEBUFFER the framebuffer is still scaled in fullscreen,
so use the logical window size as screen size and derive screenScale
from the framebuffer/window ratio.

Fixes #5504

* Apply style fixes from code review: remove duplicate screenScale assignment, collapse single-statement ifs to one line, remove trailing periods from comments
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raylib is a simple and easy-to-use library to enjoy videogames programming.

raylib is highly inspired by Borland BGI graphics lib and by XNA framework and it's especially well suited for prototyping, tooling, graphical applications, embedded systems and education.

NOTE for ADVENTURERS: raylib is a programming library to enjoy videogames programming; no fancy interface, no visual helpers, no debug button... just coding in the most pure spartan-programmers way.

Ready to learn? Jump to code examples!



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features

  • NO external dependencies, all required libraries are included into raylib
  • Multiple platforms supported: Windows, Linux, MacOS, RPI, Android, HTML5... and more!
  • Written in plain C code (C99) using PascalCase/camelCase notation
  • Hardware accelerated with OpenGL: 1.1, 2.1, 3.3, 4.3, ES 2.0, ES 3.0
  • Unique OpenGL abstraction layer (usable as standalone module): rlgl
  • Multiple Fonts formats supported (TTF, OTF, FNT, BDF, sprite fonts)
  • Multiple texture formats supported, including compressed formats (DXT, ETC, ASTC)
  • Full 3D support, including 3D Shapes, Models, Billboards, Heightmaps and more!
  • Flexible Materials system, supporting classic maps and PBR maps
  • Animated 3D models supported (skeletal bones animation) (IQM, M3D, glTF)
  • Shaders support, including model shaders and postprocessing shaders
  • Powerful math module for Vector, Matrix and Quaternion operations: raymath
  • Audio loading and playing with streaming support (WAV, QOA, OGG, MP3, FLAC, XM, MOD)
  • VR stereo rendering support with configurable HMD device parameters
  • Huge examples collection with +140 code examples!
  • Bindings to +70 programming languages!
  • Free and open source

basic example

This is a basic raylib example, it creates a window and draws the text "Congrats! You created your first window!" in the middle of the screen. Check this example running live on web here.

#include "raylib.h"

int main(void)
{
    InitWindow(800, 450, "raylib [core] example - basic window");

    while (!WindowShouldClose())
    {
        BeginDrawing();
            ClearBackground(RAYWHITE);
            DrawText("Congrats! You created your first window!", 190, 200, 20, LIGHTGRAY);
        EndDrawing();
    }

    CloseWindow();

    return 0;
}

build and installation

raylib binary releases for Windows, Linux, macOS, Android and HTML5 are available at the Github Releases page.

raylib is also available via multiple package managers on multiple OS distributions.

Installing and building raylib on multiple platforms

raylib Wiki contains detailed instructions on building and usage on multiple platforms.

Note that the Wiki is open for edit, if you find some issues while building raylib for your target platform, feel free to edit the Wiki or open an issue related to it.

Setup raylib with multiple IDEs

raylib has been developed on Windows platform using Notepad++ and MinGW GCC compiler but it can be used with other IDEs on multiple platforms.

Projects directory contains several ready-to-use project templates to build raylib and code examples with multiple IDEs.

Note that there are lots of IDEs supported, some of the provided templates could require some review, so please, if you find some issue with a template or you think they could be improved, feel free to send a PR or open a related issue.

learning and docs

raylib is designed to be learned using the examples as the main reference. There is no standard API documentation but there is a cheatsheet containing all the functions available on the library a short description of each one of them, input parameters and result value names should be intuitive enough to understand how each function works.

Some additional documentation about raylib design can be found in raylib GitHub Wiki. Here are the relevant links:

contact and networks

raylib is present in several networks and raylib community is growing everyday. If you are using raylib and enjoying it, feel free to join us in any of these networks. The most active network is our Discord server! :)

contributors

license

raylib is licensed under an unmodified zlib/libpng license, which is an OSI-certified, BSD-like license that allows static linking with closed source software. Check LICENSE for further details.

raylib uses internally some libraries for window/graphics/inputs management and also to support different file formats loading, all those libraries are embedded with and are available in src/external directory. Check raylib dependencies LICENSES on raylib Wiki for details.

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