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glfw: add glfw.getTimerValue

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
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Stephen Gutekanst 2021-10-16 17:48:54 -07:00 • committed by Stephen Gutekanst
parent e2b65c6fb9
commit faa0ee07db
1 changed files with 34 additions and 22 deletions
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56
glfw/src/time.zig
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@ -30,7 +30,7 @@ const getError = @import("errors.zig").getError;
pub inline fn getTime() f64 {
const time = c.glfwGetTime();
// The only error shouldClose could return would be glfw.Error.NotInitialized, which should
// The only error this could return would be glfw.Error.NotInitialized, which should
// definitely have occurred before calls to this. Returning an error here makes the API
// awkward to use, so we discard it instead.
getError() catch {};
@ -62,26 +62,30 @@ pub inline fn setTime(time: f64) Error!void {
try getError();
}
// TODO(time):
// /// Returns the current value of the raw timer.
// ///
// /// This function returns the current value of the raw timer, measured in
// /// 1&nbsp;/&nbsp;frequency seconds. To get the frequency, call @ref
// /// glfwGetTimerFrequency.
// ///
// /// @return The value of the timer, or zero if an
// /// error occurred.
// ///
// /// Possible errors include glfw.Error.NotInitialized.
// ///
// /// @thread_safety This function may be called from any thread.
// ///
// /// see also: time, glfwGetTimerFrequency
// ///
// ///
// /// @ingroup input
// GLFWAPI uint64_t glfwGetTimerValue(void);
/// Returns the current value of the raw timer.
///
/// This function returns the current value of the raw timer, measured in `1/frequency` seconds. To
/// get the frequency, call glfw.getTimerFrequency.
///
/// @return The value of the timer, or zero if an error occurred.
///
/// Possible errors include glfw.Error.NotInitialized.
///
/// @thread_safety This function may be called from any thread.
///
/// see also: time, glfw.getTimerFrequency
pub inline fn getTimerValue() u64 {
const value = c.glfwGetTimerValue();
// The only error this could return would be glfw.Error.NotInitialized, which should
// definitely have occurred before calls to this. Returning an error here makes the API
// awkward to use, so we discard it instead.
getError() catch {};
return value;
}
// TODO(time):
// /// Returns the frequency, in Hz, of the raw timer.
// ///
// /// This function returns the frequency, in Hz, of the raw timer.
@ -107,10 +111,18 @@ test "getTime" {
_ = getTime();
}
test "getTime" {
test "setTime" {
const glfw = @import("main.zig");
try glfw.init();
defer glfw.terminate();
_ = getTime();
_ = try glfw.setTime(1234);
}
test "getTimerValue" {
const glfw = @import("main.zig");
try glfw.init();
defer glfw.terminate();
_ = glfw.getTimerValue();
}