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gtk: do not disable OpenGL ES and Vulkan

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Apparently either OpenGL ES or Vulkan is required to present our DMABUFs
for jcollie
This commit is contained in:
Leah Amelia Chen
2026-09-06 14:16:36 +08:00
parent ce5d51f46f
commit 202fa8e390
1 changed files with 6 additions and 44 deletions
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50
src/apprt/gtk/class/application.zig
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@@ -3379,14 +3379,8 @@ fn setGtkEnv(config: *const CoreConfig) std.Io.Writer.Error!void {
var gdk_debug: struct {
/// output OpenGL debug information
opengl: bool = false,
/// disable GLES, Ghostty can't use GLES
@"gl-disable-gles": bool = false,
// GTK's new renderer can cause blurry font when using fractional scaling.
@"gl-no-fractional": bool = false,
/// Disabling Vulkan can improve startup times by hundreds of
/// milliseconds on some systems. We don't use Vulkan so we can just
/// disable it.
@"vulkan-disable": bool = false,
} = .{
// `gtk-opengl-debug` dumps logs directly to stderr so both must be true
// to enable OpenGL debugging.
@@ -3394,50 +3388,18 @@ fn setGtkEnv(config: *const CoreConfig) std.Io.Writer.Error!void {
};
var gdk_disable: struct {
@"gles-api": bool = false,
/// current gtk implementation for color management is not good enough.
/// see: https://bugs.kde.org/show_bug.cgi?id=495647
/// gtk issue: https://gitlab.gnome.org/GNOME/gtk/-/issues/6864
@"color-mgmt": bool = true,
/// Disabling Vulkan can improve startup times by hundreds of
/// milliseconds on some systems. We don't use Vulkan so we can just
/// disable it.
vulkan: bool = false,
} = .{};
environment: {
if (gtk_version.runtimeAtLeast(4, 18, 0)) {
gdk_disable.@"color-mgmt" = false;
}
if (gtk_version.runtimeAtLeast(4, 16, 0)) {
// From gtk 4.16, GDK_DEBUG is split into GDK_DEBUG and GDK_DISABLE.
// For the remainder of "why" see the 4.14 comment below.
gdk_disable.@"gles-api" = true;
gdk_disable.vulkan = true;
break :environment;
}
if (gtk_version.runtimeAtLeast(4, 14, 0)) {
// We need to export GDK_DEBUG to run on Wayland after GTK 4.14.
// Older versions of GTK do not support these values so it is safe
// to always set this. Forwards versions are uncertain so we'll have
// to reassess...
//
// Upstream issue: https://gitlab.gnome.org/GNOME/gtk/-/issues/6589
gdk_debug.@"gl-disable-gles" = true;
gdk_debug.@"vulkan-disable" = true;
if (gtk_version.runtimeUntil(4, 17, 5)) {
// Removed at GTK v4.17.5
gdk_debug.@"gl-no-fractional" = true;
}
break :environment;
}
// Versions prior to 4.14 are a bit of an unknown for Ghostty. It
// is an environment that isn't tested well and we don't have a
// good understanding of what we may need to do.
gdk_debug.@"vulkan-disable" = true;
if (gtk_version.runtimeAtLeast(4, 18, 0)) {
gdk_disable.@"color-mgmt" = false;
}
if (gtk_version.runtimeUntil(4, 17, 5)) {
// Removed at GTK v4.17.5
gdk_debug.@"gl-no-fractional" = true;
}
{