Add sync objects

main.cpp

@@ -37,6 +37,7 @@ enum ExitCode {
 	EXIT_CODE_NO_SUITABLE_QUEUE_FAMILY,
 	EXIT_CODE_NO_SUITABLE_DEPTH_FORMAT,
 	EXIT_CODE_MESH_LOAD_FAILED,
+	EXIT_CODE_SYNC_OBJ_CREATE_FAILED,
 };
 
 struct Vertex {
@@ -67,6 +68,8 @@ typedef VkImageView *VkImageViewArray;
 typedef VkFormat *VkFormatArray;
 typedef Vertex *VertexArray;
 typedef ShaderDataBuffer *ShaderDataBufferArray;
+typedef VkFence *VkFenceArray;
+typedef VkSemaphore *VkSemaphoreArray;
 
 wapp_intern inline void check(VkResult result);
 wapp_intern inline void check_swapchain(VkResult result);
@@ -103,6 +106,9 @@ wapp_intern VkBuffer vert_index_buf                = VK_NULL_HANDLE;
 wapp_intern VmaAllocation vert_index_buf_alloc           = VK_NULL_HANDLE;
 wapp_intern ShaderData shader_data                       = {};
 wapp_intern ShaderDataBufferArray shader_data_bufs;      
+wapp_intern VkFenceArray fences                          = nullptr;
+wapp_intern VkSemaphoreArray image_acquired_semaphores   = nullptr;
+wapp_intern VkSemaphoreArray render_completed_semaphores = nullptr;
 
 int main() {
 	// {{{ Initialisation
@@ -538,6 +544,34 @@ int main() {
 	}
 	// }}}
 
+	// Synchronization Objects {{{
+	fences = wapp_array_alloc_capacity(VkFence, &arena, max_frames_in_flight, ARRAY_INIT_FILLED);
+	check(fences != nullptr, EXIT_CODE_SYNC_OBJ_CREATE_FAILED);
+
+	image_acquired_semaphores = wapp_array_alloc_capacity(VkSemaphore, &arena, max_frames_in_flight, ARRAY_INIT_FILLED);
+	check(image_acquired_semaphores != nullptr, EXIT_CODE_SYNC_OBJ_CREATE_FAILED);
+
+	// The number of semaphores used to signal rendering needs to match that of the swapchain's images
+	render_completed_semaphores = wapp_array_alloc_capacity(VkSemaphore, &arena, swapchain_image_count, ARRAY_INIT_FILLED);
+	check(render_completed_semaphores != nullptr, EXIT_CODE_SYNC_OBJ_CREATE_FAILED);
+
+	VkFenceCreateInfo fence_create_info = {};
+	fence_create_info.sType             = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
+	fence_create_info.flags             = VK_FENCE_CREATE_SIGNALED_BIT;
+
+	VkSemaphoreCreateInfo semaphore_create_info = {};
+	semaphore_create_info.sType                 = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
+
+	for (u32 i = 0; i < max_frames_in_flight; ++i) {
+		check(vkCreateFence(device, &fence_create_info, NULL, &fences[i]));
+		check(vkCreateSemaphore(device, &semaphore_create_info, NULL, &image_acquired_semaphores[i]));
+	}
+
+	for (u32 i = 0; i < swapchain_image_count; ++i) {
+		check(vkCreateSemaphore(device, &semaphore_create_info, NULL, &render_completed_semaphores[i]));
+	}
+	// }}}
+
 	// {{{ Render Loop
 	SDL_Event event = {};
 	while (running) {
@@ -557,6 +591,14 @@ int main() {
 	// }}}
 
 	// {{{ Cleanup
+
+	for (u32 i = 0; i < swapchain_image_count; ++i) {
+		vkDestroySemaphore(device, render_completed_semaphores[i], NULL);
+	}
+	for (u32 i = 0; i < max_frames_in_flight; ++i) {
+		vkDestroySemaphore(device, image_acquired_semaphores[i], NULL);
+		vkDestroyFence(device, fences[i], NULL);
+	}
 	for (u32 i = 0; i < max_frames_in_flight; ++i) {
 		vmaDestroyBuffer(allocator, shader_data_bufs[i].buffer, shader_data_bufs[i].allocation);
 	}