Zander671/river
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Output: fix regression of initial mode logic

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This logic that looked pointless to me while doing the wlroots 0.17
upgrade is in fact important as tiosgz helpfully pointed out.

It was added back in bc610c8b to address an issue. Hopefully the new
comments stop me from trying to break it again :)
This commit is contained in:
Isaac Freund 2023-12-05 00:27:36 +01:00
parent 6bfaf62cef
commit 1dc1ac02bc
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GPG Key ID: 86DED400DDFD7A11
1 changed files with 23 additions and 13 deletions
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36
river/Output.zig
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@ -194,18 +194,28 @@ pub fn create(wlr_output: *wlr.Output) !void {
if (!wlr_output.initRender(server.allocator, server.renderer)) return error.InitRenderFailed;
var state = wlr.Output.State.init();
defer state.finish();
state.setEnabled(true);
// If the list of modes for the output is empty or if no mode in the list of modes works,
// we can't enable the output automatically.
// It will stay disabled unless the user configures a custom mode which works.
if (wlr_output.preferredMode()) |preferred_mode| {
state.setMode(preferred_mode);
}
var state = wlr.Output.State.init();
defer state.finish();
// Ignore failure here and create the Output anyways.
// It will stay disabled unless the user configures a custom mode which may work.
_ = wlr_output.commitState(&state);
state.setMode(preferred_mode);
state.setEnabled(true);
if (!wlr_output.commitState(&state)) {
// It is important to try other modes if the preferred mode fails
// which is reported to be helpful in practice with e.g. multiple
// high resolution monitors connected through a usb dock.
var it = wlr_output.modes.iterator(.forward);
while (it.next()) |mode| {
if (mode == preferred_mode) continue;
state.setMode(mode);
if (wlr_output.commitState(&state)) break;
}
}
}
var width: c_int = undefined;
var height: c_int = undefined;
@ -283,7 +293,7 @@ pub fn create(wlr_output: *wlr.Output) !void {
output.active_link.init();
server.root.all_outputs.append(output);
output.handleEnable();
output.handleEnableDisable();
}
pub fn layerSurfaceTree(self: Self, layer: zwlr.LayerShellV1.Layer) *wlr.SceneTree {
@ -390,7 +400,7 @@ fn handleRequestState(listener: *wl.Listener(*wlr.Output.event.RequestState), ev
}
if (event.state.committed.enabled) {
output.handleEnable();
output.handleEnableDisable();
}
if (event.state.committed.mode) {
@ -401,7 +411,7 @@ fn handleRequestState(listener: *wl.Listener(*wlr.Output.event.RequestState), ev
}
}
fn handleEnable(output: *Self) void {
fn handleEnableDisable(output: *Self) void {
// We can't assert the current state of normal_content/locked_content
// here as this output may be newly created.
if (output.wlr_output.enabled) {