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glfw: add VideoMode type; add Monitor.getVideoModes

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2021-07-17 19:57:02 -07:00
parent 1c10b309b2
commit 74e2bddf93
2 changed files with 73 additions and 3 deletions
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33
glfw/src/Monitor.zig
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@ -172,8 +172,7 @@ pub inline fn setUserPointer(self: Monitor, comptime T: type, ptr: *T) Error!voi
///
/// Possible errors include glfw.Error.NotInitialized.
///
/// @thread_safety This function may be called from any thread. Access is not
/// synchronized.
/// @thread_safety This function may be called from any thread. Access is not synchronized.
///
/// see also: monitor_userptr, glfw.Monitor.setUserPointer
pub inline fn getUserPointer(self: Monitor, comptime T: type) Error!?*T {
@ -189,7 +188,7 @@ pub inline fn getUserPointer(self: Monitor, comptime T: type) Error!?*T {
/// always first. If no monitors were found, this function returns an empty slice.
///
/// The returned slice memory is owned by the caller. The underlying handles are owned by GLFW, and
/// are valid until the monitor configuration changes or the `glfw.terminate` is called.
/// are valid until the monitor configuration changes or `glfw.terminate` is called.
///
/// @thread_safety This function must only be called from the main thread.
///
@ -274,6 +273,34 @@ pub inline fn setCallback(comptime Data: type, data: *Data, f: ?*const fn (monit
try getError();
}
/// Returns the available video modes for the specified monitor.
///
/// This function returns an array of all video modes supported by the monitor. The returned slice
/// is sorted in ascending order, first by color bit depth (the sum of all channel depths) and
/// then by resolution area (the product of width and height).
///
/// Possible errors include glfw.Error.NotInitialized and glfw.Error.PlatformError.
///
/// The returned slice memory is owned by the caller. The underlying handles are owned by GLFW, and
/// are valid until the monitor is disconnected, this function is called again, or `glfw.terminate`
/// is called.
///
/// @thread_safety This function must only be called from the main thread.
///
/// see also: monitor_modes, glfw.Monitor.getVideoMode
pub inline fn getVideoModes(allocator: *mem.Allocator) ![]VideoMode {
var count: c_int = 0;
const modes = c.glfwGetVideoModes(&count);
try getError();
const slice = try allocator.alloc(VideoMode, @intCast(usize, count));
var i: usize = 0;
while (i < count) : (i += 1) {
slice[i] = VideoMode{ .handle = modes[i].? };
}
return slice;
}
test "getAll" {
const glfw = @import("main.zig");
try glfw.init();