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glfw: add glfw.Window.swapBuffers

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2021-10-16 18:05:29 -07:00 • committed by Stephen Gutekanst
parent eb939afa1d
commit 022b9f6860
1 changed files with 42 additions and 28 deletions
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70
glfw/src/Window.zig
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@ -754,35 +754,33 @@ pub inline fn requestAttention(self: Window) Error!void {
try getError(); try getError();
} }
// TODO(window): /// Swaps the front and back buffers of the specified window.
///
/// This function swaps the front and back buffers of the specified window when rendering with
/// OpenGL or OpenGL ES. If the swap interval is greater than zero, the GPU driver waits the
/// specified number of screen updates before swapping the buffers.
///
/// The specified window must have an OpenGL or OpenGL ES context. Specifying a window without a
/// context will generate Error.NoWindowContext.
///
/// This function does not apply to Vulkan. If you are rendering with Vulkan, see `vkQueuePresentKHR`
/// instead.
///
/// @param[in] window The window whose buffers to swap.
///
/// Possible errors include glfw.Error.NotInitialized, glfw.Error.NoWindowContext and glfw.Error.PlatformError.
///
/// __EGL:__ The context of the specified window must be current on the calling thread.
///
/// @thread_safety This function may be called from any thread.
///
/// see also: buffer_swap, glfwSwapInterval
pub inline fn swapBuffers(self: Window) Error!void {
c.glfwSwapBuffers(self.handle);
try getError();
}
// /// Swaps the front and back buffers of the specified window. // TODO(window):
// ///
// /// This function swaps the front and back buffers of the specified window when
// /// rendering with OpenGL or OpenGL ES. If the swap interval is greater than
// /// zero, the GPU driver waits the specified number of screen updates before
// /// swapping the buffers.
// ///
// /// The specified window must have an OpenGL or OpenGL ES context. Specifying
// /// a window without a context will generate a @ref GLFW_NO_WINDOW_CONTEXT
// /// error.
// ///
// /// This function does not apply to Vulkan. If you are rendering with Vulkan,
// /// see `vkQueuePresentKHR` instead.
// ///
// /// @param[in] window The window whose buffers to swap.
// ///
// /// Possible errors include glfw.Error.NotInitialized, glfw.Error.NoWindowContext and glfw.Error.PlatformError.
// ///
// /// __EGL:__ The context of the specified window must be current on the
// /// calling thread.
// ///
// /// @thread_safety This function may be called from any thread.
// ///
// /// see also: buffer_swap, glfwSwapInterval
// ///
// /// @glfw3 Added window handle parameter.
// GLFWAPI void glfwSwapBuffers(GLFWwindow* window);
// /// The function pointer type for window position callbacks. // /// The function pointer type for window position callbacks.
// /// // ///
@ -1731,3 +1729,19 @@ test "requestAttention" {
_ = window.requestAttention() catch |err| std.debug.print("can't request attention for window, not supported by OS maybe? error={}\n", .{err}); _ = window.requestAttention() catch |err| std.debug.print("can't request attention for window, not supported by OS maybe? error={}\n", .{err});
} }
test "swapBuffers" {
const glfw = @import("main.zig");
try glfw.init();
defer glfw.terminate();
const window = glfw.Window.create(640, 480, "Hello, Zig!", null, null) catch |err| {
// return without fail, because most of our CI environments are headless / we cannot open
// windows on them.
std.debug.print("note: failed to create window: {}\n", .{err});
return;
};
defer window.destroy();
_ = try window.swapBuffers();
}