Skip to content

Fix ClickGUI mouse offset on HiDPI/Retina displays #161

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
Cocolots merged 1 commit into from
Oct 24, 2026
Merged

Fix ClickGUI mouse offset on HiDPI/Retina displays #161

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 9 additions & 3 deletions src/main/java/net/aoba/gui/GuiManager.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -459,10 +459,16 @@ public void onRender(Render2DEvent event) {
Matrix3x2fStack matrixStack = drawContext.pose();
matrixStack.pushMatrix();

int guiScale = MC.getWindow().calculateScale(MC.options.guiScale().get(), MC.isEnforceUnicode());
matrixStack.scale(1.0f / guiScale, 1.0f / guiScale);

com.mojang.blaze3d.platform.Window window = MC.getWindow();

// The UI is laid out in window (screen) coordinates, which is the same space GLFW
// reports the mouse in. On HiDPI displays (e.g. macOS Retina) the framebuffer is
// larger than the window, so scale from screen coordinates to framebuffer pixels
// before dividing out the GUI scale. Otherwise rendering and mouse input disagree.
int guiScale = window.getGuiScale();
float pixelRatio = window.getScreenWidth() > 0 ? (float) window.getWidth() / window.getScreenWidth() : 1.0f;
float uiScale = pixelRatio / guiScale;
matrixStack.scale(uiScale, uiScale);
// Render ClickGUI and Topbar
if (clickGuiOpen) {
renderer.drawBox(0, 0, window.getScreenWidth(), window.getScreenHeight(),
Expand Down
Loading