clean up acquire/present

src/main.zig

@@ -248,12 +248,7 @@ pub fn main() !void {
         try au.D.resetFences(1, &.{flight.fence});
         try au.D.resetCommandPool(flight.pool, .{});
 
-        const acq = try au.D.acquireNextImageKHR(
-            sc.handle,
-            std.math.maxInt(u64),
-            flight.acquire,
-            .null_handle,
-        );
+        const tgt = try sc.acquire(flight.acquire, .null_handle);
 
         var cmd = au.CommandBufferProxy.init(flight.cmd, au.D.wrapper);
         try cmd.beginCommandBuffer(&.{ .flags = .{ .one_time_submit_bit = true } });
@@ -263,7 +258,7 @@ pub fn main() !void {
             .extent = sc.cinfo.image_extent,
         };
 
-        sc.beginRendering(cmd, render_area, acq.image_index);
+        tgt.begin_rendering(cmd, render_area);
         record_render(
             cmd,
             uber,
@@ -273,7 +268,7 @@ pub fn main() !void {
             descriptorSet,
         );
         im.c.ImGui_ImplVulkan_RenderDrawData(im.c.igGetDrawData(), @ptrFromInt(@intFromEnum(cmd.handle)), null);
-        sc.endRendering(cmd, acq.image_index);
+        tgt.end_rendering(cmd);
 
         for (vertex_data) |*v| {
             for (v.pos[0..2]) |*f| {
@@ -304,14 +299,7 @@ pub fn main() !void {
             @panic("Submission failed");
         };
 
-        _ = try au.Q.presentKHR(&vk.PresentInfoKHR{
-            .wait_semaphore_count = 1,
-            .p_wait_semaphores = &.{flight.complete},
-            .swapchain_count = 1,
-            .p_swapchains = &.{sc.handle},
-            .p_image_indices = &.{acq.image_index},
-            .p_results = null,
-        }); // todo suboptimal?
+        _ = try sc.present(&.{flight.complete}, tgt); // todo suboptimal?
     }
 
     try au.D.deviceWaitIdle();