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const std = @import("std");
const drm = @import("root.zig");
pub const Crtc = struct {
const Self = @This();
connector_ids: ?*u32,
count_connectors: u32,
id: u32,
buffer_id: u32,
x: u32,
y: u32,
mode: drm.Connector.Mode,
mode_valid: u32,
gamma_size: u32,
card: *drm.Card,
pub fn init(card: *drm.Card, id: u32) !Self {
var raw = std.mem.zeroInit(drm.request.Crtc, .{ .id = id });
try card.request(.get_crtc, &raw);
return .{
.connector_ids = raw.connector_ids,
.count_connectors = raw.count_connectors,
.id = raw.id,
.buffer_id = raw.buffer_id,
.x = raw.x,
.y = raw.y,
.mode = raw.mode,
.mode_valid = raw.mode_valid,
.gamma_size = raw.gamma_size,
.card = card,
};
}
pub fn attach(
self: *Self,
buffer: *drm.Buffer,
connector: *drm.Connector,
mode: drm.Connector.Mode
) !void {
self.connector_ids = &connector.id;
self.count_connectors = 1;
var crtc = drm.request.Crtc {
.id = self.id,
.x = self.x,
.y = self.y,
.buffer_id = buffer.crtc.id,
.connector_ids = self.connector_ids,
.count_connectors = self.count_connectors,
.mode = mode,
.mode_valid = 1,
.gamma_size = self.gamma_size,
};
try self.card.request(.set_crtc, &crtc);
}
pub fn page_flip(self: *Self, buffer: *drm.Buffer) !void {
buffer.swap();
var flip = std.mem.zeroInit(drm.request.PageFlip, .{
.buffer_id = buffer.crtc.id,
.crtc_id = self.id,
.flags = std.mem.zeroInit(drm.request.PageFlip.Event, .{ .event = true }),
});
try self.card.request(.page_flip, &flip);
}
pub fn detach(self: *Self) void {
var crtc = drm.request.Crtc {
.id = self.id,
.x = self.x,
.y = self.y,
.buffer_id = self.buffer_id,
.connector_ids = self.connector_ids,
.count_connectors = self.count_connectors,
.mode = self.mode,
.mode_valid = self.mode_valid,
.gamma_size = self.gamma_size,
};
self.card.request(
.set_crtc,
&crtc
) catch |err| std.debug.panic("set crtc failed on detach: {}", .{err});
}
};
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