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vsync'd modesetting!

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This commit is contained in:
Jackson Netherwood-Imig
2026-01-26 10:30:40 -08:00
parent 13b38e4967
commit f40252c485
5 changed files with 362 additions and 116 deletions
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src/sys.zig
+163 -104
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@@ -83,8 +83,8 @@ pub const Request = enum(u32) {
mode_getcrtc = drm_iowr(0xA1, mode.Crtc),
mode_setcrtc = drm_iowr(0xA2, mode.Crtc),
mode_cursor = drm_iowr(0xA3, mode.Cursor),
mode_getgamma = drm_iowr(0xA4, mode.Crtc.Lut),
mode_setgamma = drm_iowr(0xA5, mode.Crtc.Lut),
mode_getgamma = drm_iowr(0xA4, mode.CrtcLut),
mode_setgamma = drm_iowr(0xA5, mode.CrtcLut),
mode_getencoder = drm_iowr(0xA6, mode.GetEncoder),
mode_getconnector = drm_iowr(0xA7, mode.GetConnector),
mode_getproperty = drm_iowr(0xAA, mode.GetProperty),
@@ -183,31 +183,31 @@ pub const IrqBusid = extern struct {
pub const Map = extern struct {
offset: c_ulong,
size: c_ulong,
type: Type,
flags: Flags,
type: MapType,
flags: MapFlags,
handle: *anyopaque,
mtrr: c_int,
};
pub const Type = enum(c_int) {
frame_buffer = 0,
registers = 1,
shm = 2,
agp = 3,
scatter_gather = 4,
consistent = 5,
};
pub const MapType = enum(c_int) {
frame_buffer = 0,
registers = 1,
shm = 2,
agp = 3,
scatter_gather = 4,
consistent = 5,
};
pub const Flags = packed struct(c_int) {
restricted: bool = false,
read_only: bool = false,
locked: bool = false,
kernel: bool = false,
write_combining: bool = false,
contains_lock: bool = false,
removable: bool = false,
driver: bool = false,
_: @Int(.signed, @bitSizeOf(c_int) - 8) = 0,
};
pub const MapFlags = packed struct(c_int) {
restricted: bool = false,
read_only: bool = false,
locked: bool = false,
kernel: bool = false,
write_combining: bool = false,
contains_lock: bool = false,
removable: bool = false,
driver: bool = false,
_: @Int(.signed, @bitSizeOf(c_int) - 8) = 0,
};
pub const Client = extern struct {
@@ -222,29 +222,29 @@ pub const Client = extern struct {
pub const Stats = extern struct {
count: c_ulong,
data: [15]Stat,
};
pub const Stat = extern struct {
value: c_ulong,
type: Type,
pub const Stat = extern struct {
value: c_ulong,
type: StatType,
};
pub const Type = enum(c_int) {
lock,
opens,
closes,
ioctls,
locks,
unlocks,
value,
byte,
count,
irq,
primary,
secondary,
dma,
special,
missed,
};
};
pub const StatType = enum(c_int) {
lock,
opens,
closes,
ioctls,
locks,
unlocks,
value,
byte,
count,
irq,
primary,
secondary,
dma,
special,
missed,
};
pub const SetVersion = extern struct {
@@ -256,13 +256,13 @@ pub const SetVersion = extern struct {
pub const Ctx = extern struct {
handle: Context,
flags: Flags,
flags: CtxFlags,
};
pub const Flags = packed struct(c_int) {
preserved: bool = false,
@"2d_only": bool = false,
_: @Int(.signed, @bitSizeOf(c_int) - 2) = 0,
};
pub const CtxFlags = packed struct(c_int) {
preserved: bool = false,
@"2d_only": bool = false,
_: @Int(.signed, @bitSizeOf(c_int) - 2) = 0,
};
pub const CtxRes = extern struct {
@@ -270,6 +270,33 @@ pub const CtxRes = extern struct {
contexts: [*]Ctx,
};
pub const Event = extern struct {
type: EventType,
length: u32,
};
pub const EventType = enum(u32) {
vblank = 0x01,
flip_complete = 0x02,
crtc_sequence = 0x03,
};
pub const EventVblank = extern struct {
base: Event,
user_data: u64,
tv_sec: u32,
tv_usec: u32,
sequence: u32,
crtc_id: u32,
};
pub const EventCrtcSequence = extern struct {
base: Event,
user_data: u64,
time_ns: i64,
sequence: u64,
};
pub const mode = struct {
pub const display_mode_len = 32;
pub const prop_name_len = 32;
@@ -298,18 +325,18 @@ pub const mode = struct {
y: u32,
gamma_size: u32,
mode_valid: u32,
mode: Modeinfo,
pub const Lut = extern struct {
crtc_id: u32,
gamma_size: u32,
red: u64,
green: u64,
blue: u64,
};
mode: ModeInfo,
};
pub const Modeinfo = extern struct {
pub const CrtcLut = extern struct {
crtc_id: u32,
gamma_size: u32,
red: u64,
green: u64,
blue: u64,
};
pub const ModeInfo = extern struct {
clock: u32,
hdisplay: u16,
hsync_start: u16,
@@ -322,39 +349,39 @@ pub const mode = struct {
vtotal: u16,
vscan: u16,
vrefresh: u32,
flags: Flags,
type: Type,
flags: ModeFlags,
type: ModeType,
name: [display_mode_len]u8,
};
pub const Flags = packed struct(u32) {
phsync: bool = false,
nhsync: bool = false,
pvsync: bool = false,
nvsync: bool = false,
interlace: bool = false,
dblscan: bool = false,
csync: bool = false,
pcsync: bool = false,
ncsync: bool = false,
hskew: bool = false,
_deprecated10: u1 = 0,
_deprecated11: u1 = 0,
dblclk: bool = false,
clkdiv2: bool = false,
_: u18 = 0,
};
pub const ModeType = packed struct(u32) {
_deprecated0: u1 = 0,
_deprecated1: u1 = 0,
_deprecated2: u1 = 0,
preferred: bool = false,
_deprecated4: u1 = 0,
userdef: bool = false,
driver: bool = false,
_: u25 = 0,
};
pub const Type = packed struct(u32) {
_deprecated0: u1 = 0,
_deprecated1: u1 = 0,
_deprecated2: u1 = 0,
preferred: bool = false,
_deprecated4: u1 = 0,
userdef: bool = false,
driver: bool = false,
_: u25 = 0,
};
pub const ModeFlags = packed struct(u32) {
phsync: bool = false,
nhsync: bool = false,
pvsync: bool = false,
nvsync: bool = false,
interlace: bool = false,
dblscan: bool = false,
csync: bool = false,
pcsync: bool = false,
ncsync: bool = false,
hskew: bool = false,
_deprecated10: u1 = 0,
_deprecated11: u1 = 0,
dblclk: bool = false,
clkdiv2: bool = false,
_: u18 = 0,
};
pub const Cursor = extern struct {
@@ -369,22 +396,22 @@ pub const mode = struct {
pub const GetEncoder = extern struct {
encoder_id: u32,
encoder_type: Type,
encoder_type: EncoderType,
crtc_id: u32,
possible_crtcs: u32,
possible_clones: u32,
};
pub const Type = enum(u32) {
none = 0,
dac = 1,
tmds = 2,
lvds = 3,
tvdac = 4,
virtual = 5,
dsi = 6,
dpmst = 7,
dpi = 8,
};
pub const EncoderType = enum(u32) {
none = 0,
dac = 1,
tmds = 2,
lvds = 3,
tvdac = 4,
virtual = 5,
dsi = 6,
dpmst = 7,
dpi = 8,
};
pub const GetConnector = extern struct {
@@ -397,7 +424,7 @@ pub const mode = struct {
count_encoders: u32,
encoder_id: u32,
connector_id: u32,
connector_type: u32,
connector_type: ConnectorType,
connector_type_id: u32,
connection: u32,
mm_width: u32,
@@ -406,6 +433,30 @@ pub const mode = struct {
pad: u32,
};
pub const ConnectorType = enum(u32) {
unknown = 0,
vga = 1,
dvi_i = 2,
dvi_d = 3,
dvi_a = 4,
composite = 5,
svideo = 6,
lvds = 7,
component = 8,
din = 9,
display_port = 10,
hdmi_a = 11,
hdmi_b = 12,
tv = 13,
e_dp = 14,
virtual = 15,
dsi = 16,
dpi = 17,
writeback = 18,
spi = 19,
usb = 20,
};
pub const GetProperty = extern struct {
values_ptr: u64,
enum_blob_ptr: u64,
@@ -441,11 +492,19 @@ pub const mode = struct {
pub const CrtcPageFlip = extern struct {
crtc_id: u32,
fb_id: u32,
flags: u32,
flags: PageFlipFlags,
reserved: u32,
user_data: u64,
};
pub const PageFlipFlags = packed struct(u32) {
event: bool = false,
async: bool = false,
target_absolute: bool = false,
target_relative: bool = false,
_: u28 = 0,
};
pub const FbDirtyCmd = extern struct {
fb_id: u32,
flags: u32,
@@ -513,7 +572,7 @@ pub const mode = struct {
handles: [4]u32,
pitches: [4]u32,
offsets: [4]u32,
modifier: [4]u64,
modifiers: [4]u64,
};
pub const ObjGetProperties = extern struct {