Fix transfer semaphore fiasco

src/Game.zig

@@ -116,7 +116,7 @@ index_buffer: IndexBuffer,
 global_uniforms: GlobalUniformsBuffer,
 global_uniforms_staging_buffer: StagingBuffer,
 global_uniforms_transfer_command_buffer: vk.CommandBuffer,
-global_uniforms_transfer_semaphore: vk.Semaphore,
+global_uniforms_transfer_semaphores: []vk.Semaphore,
 point_lights: PointLightBuffer,
 directional_lights: DirectionalLightBuffer,
 object_uniforms: ObjectUniformsBuffer,
@@ -326,6 +326,25 @@ pub fn init(allocator: std.mem.Allocator, engine: *Engine, swapchain: *Swapchain
     );
     try global_uniforms_transfer_command_buffer.endCommandBuffer();
 
+    const global_uniforms_transfer_semaphores = blk: {
+        var semaphores: std.ArrayList(vk.Semaphore) = try .initCapacity(allocator, swapchain.swapchain_images.len);
+        errdefer semaphores.deinit(allocator);
+
+        errdefer for (semaphores.items) |x| engine.destroySemaphore(x);
+
+        for (0..swapchain.swapchain_images.len) |_| {
+            semaphores.appendAssumeCapacity(try engine.createSemaphore());
+        }
+
+        break :blk try semaphores.toOwnedSlice(allocator);
+    };
+    errdefer {
+        for (global_uniforms_transfer_semaphores) |semaphore| {
+            engine.destroySemaphore(semaphore);
+        }
+        allocator.free(global_uniforms_transfer_semaphores);
+    }
+
     const global_uniforms_transfer_semaphore = try engine.createSemaphore();
     errdefer engine.destroySemaphore(global_uniforms_transfer_semaphore);
 
@@ -659,7 +678,7 @@ pub fn init(allocator: std.mem.Allocator, engine: *Engine, swapchain: *Swapchain
         .global_uniforms = global_uniforms,
         .global_uniforms_staging_buffer = global_uniforms_staging_buffer,
         .global_uniforms_transfer_command_buffer = global_uniforms_transfer_command_buffer.handle,
-        .global_uniforms_transfer_semaphore = global_uniforms_transfer_semaphore,
+        .global_uniforms_transfer_semaphores = global_uniforms_transfer_semaphores,
         .point_lights = point_lights,
         .directional_lights = directional_lights,
         .object_uniforms = object_uniforms,
@@ -683,7 +702,11 @@ pub fn deinit(self: *Game) void {
     self.directional_lights.deinit(self.engine);
     self.object_uniforms.deinit(self.engine);
 
-    self.engine.destroySemaphore(self.global_uniforms_transfer_semaphore);
+    for (self.global_uniforms_transfer_semaphores) |semaphore| {
+        self.engine.destroySemaphore(semaphore);
+    }
+    self.allocator.free(self.global_uniforms_transfer_semaphores);
+
     self.engine.destroyDescriptorPool(self.descriptor_pool);
     self.engine.destroySampler(self.sampler);
     self.engine.destroyPipeline(self.pipeline);
@@ -756,7 +779,7 @@ pub fn update(self: *Game, dt: f32) void {
             .command_buffer_count = 1,
             .p_command_buffers = @ptrCast(&self.global_uniforms_transfer_command_buffer),
             .signal_semaphore_count = 1,
-            .p_signal_semaphores = @ptrCast(&self.global_uniforms_transfer_semaphore),
+            .p_signal_semaphores = @ptrCast(&self.global_uniforms_transfer_semaphores[self.swapchain.image_index]),
         },
     };
 
@@ -892,7 +915,7 @@ fn render(self: *Game) !void {
         .command_buffer = command_buffer.handle,
         .wait_semaphores = &.{
             .{
-                .semaphore = self.global_uniforms_transfer_semaphore,
+                .semaphore = self.global_uniforms_transfer_semaphores[self.swapchain.image_index],
                 .stage_flags = .{ .vertex_shader_bit = true },
             },
         },

src/main.zig

@@ -83,10 +83,9 @@ pub fn main() !void {
     }
 
     std.log.debug("Exitted the game loop", .{});
-    std.posix.abort();
 
-    //for (swapchain.swapchain_images) |x| engine.waitForFence(x.fence) catch {};
-    //engine.device.deviceWaitIdle() catch {};
+    for (swapchain.swapchain_images) |x| engine.waitForFence(x.fence) catch {};
+    engine.device.deviceWaitIdle() catch {};
 }
 
 const CallbackContext = struct {