extern struct GraphicsOutput [src]

Alias for std.os.uefi.protocol.graphics_output.GraphicsOutput

Fields

_query_mode: *const fn (*const GraphicsOutput, u32, *usize, **Mode.Info) callconv(cc) Status

_set_mode: *const fn (*GraphicsOutput, u32) callconv(cc) Status

_blt: *const fn (*GraphicsOutput, ?[*]BltPixel, BltOperation, usize, usize, usize, usize, usize, usize, usize) callconv(cc) Status

mode: *Mode

Members

blt (Function)
BltError (Error Set)
BltOperation (enum)
BltPixel (extern struct)
guid (Constant)
Mode (extern struct)
PixelBitmask (extern struct)
PixelFormat (enum)
queryMode (Function)
QueryModeError (Error Set)
setMode (Function)
SetModeError (Error Set)

Source

  pub const GraphicsOutput = extern struct {
    _query_mode: *const fn (*const GraphicsOutput, u32, *usize, **Mode.Info) callconv(cc) Status,
    _set_mode: *const fn (*GraphicsOutput, u32) callconv(cc) Status,
    _blt: *const fn (*GraphicsOutput, ?[*]BltPixel, BltOperation, usize, usize, usize, usize, usize, usize, usize) callconv(cc) Status,
    mode: *Mode,

    pub const QueryModeError = uefi.UnexpectedError || error{
        DeviceError,
        InvalidParameter,
    };
    pub const SetModeError = uefi.UnexpectedError || error{
        DeviceError,
        Unsupported,
    };
    pub const BltError = uefi.UnexpectedError || error{
        InvalidParameter,
        DeviceError,
    };

    /// Returns information for an available graphics mode that the graphics device and the set of active video output devices supports.
    pub fn queryMode(self: *const GraphicsOutput, mode_id: u32) QueryModeError!*Mode.Info {
        var size_of_info: usize = undefined;
        var info: *Mode.Info = undefined;
        switch (self._query_mode(self, mode_id, &size_of_info, &info)) {
            .success => return info,
            .device_error => return Error.DeviceError,
            .invalid_parameter => return Error.InvalidParameter,
            else => |status| return uefi.unexpectedStatus(status),
        }
    }

    /// Set the video device into the specified mode and clears the visible portions of the output display to black.
    pub fn setMode(self: *GraphicsOutput, mode_id: u32) SetModeError!void {
        switch (self._set_mode(self, mode_id)) {
            .success => {},
            .device_error => return Error.DeviceError,
            .unsupported => return Error.Unsupported,
            else => |status| return uefi.unexpectedStatus(status),
        }
    }

    /// Blt a rectangle of pixels on the graphics screen. Blt stands for BLock Transfer.
    pub fn blt(
        self: *GraphicsOutput,
        blt_buffer: ?[*]BltPixel,
        blt_operation: BltOperation,
        source_x: usize,
        source_y: usize,
        destination_x: usize,
        destination_y: usize,
        width: usize,
        height: usize,
        delta: usize,
    ) BltError!void {
        switch (self._blt(
            self,
            blt_buffer,
            blt_operation,
            source_x,
            source_y,
            destination_x,
            destination_y,
            width,
            height,
            delta,
        )) {
            .success => {},
            .device_error => return Error.DeviceError,
            .invalid_parameter => return Error.InvalidParameter,
            else => |status| return uefi.unexpectedStatus(status),
        }
    }

    pub const guid align(8) = Guid{
        .time_low = 0x9042a9de,
        .time_mid = 0x23dc,
        .time_high_and_version = 0x4a38,
        .clock_seq_high_and_reserved = 0x96,
        .clock_seq_low = 0xfb,
        .node = [_]u8{ 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a },
    };

    pub const Mode = extern struct {
        max_mode: u32,
        mode: u32,
        info: *Info,
        size_of_info: usize,
        frame_buffer_base: u64,
        frame_buffer_size: usize,

        pub const Info = extern struct {
            version: u32,
            horizontal_resolution: u32,
            vertical_resolution: u32,
            pixel_format: PixelFormat,
            pixel_information: PixelBitmask,
            pixels_per_scan_line: u32,
        };
    };

    pub const PixelFormat = enum(u32) {
        red_green_blue_reserved_8_bit_per_color,
        blue_green_red_reserved_8_bit_per_color,
        bit_mask,
        blt_only,
    };

    pub const PixelBitmask = extern struct {
        red_mask: u32,
        green_mask: u32,
        blue_mask: u32,
        reserved_mask: u32,
    };

    pub const BltPixel = extern struct {
        blue: u8,
        green: u8,
        red: u8,
        reserved: u8 = undefined,
    };

    pub const BltOperation = enum(u32) {
        blt_video_fill,
        blt_video_to_blt_buffer,
        blt_buffer_to_video,
        blt_video_to_video,
        graphics_output_blt_operation_max,
    };
}  