update instance buffer & handle camera on window resize

1 files changed, 58 insertions, 5 deletions

diff --git a/src/ecs.cpp b/src/ecs.cpp
index 360370f..9d7b321 100644
--- a/src/ecs.cpp
+++ b/src/ecs.cpp
@@ -72,7 +72,7 @@ void ECS_MarkForRemoval(EntityHandle entityHandle) {
 	entitiesMarkedForRemoval.Push(entityHandle);
 }
 
-void ECS_Tick(double delta) {
+void ECS_Tick_Early(double delta) {
 	static DynArray<Entity> entitiesYetToBeRemoved{0};
 	entitiesYetToBeRemoved.Resize(EntitiesToBeRemoved.Count());
 	EntitiesToBeRemoved.Resize(0);
@@ -151,6 +151,58 @@ void ECS_Tick(double delta) {
 	entitiesMarkedForRemoval.Resize(0);
 }
 
+void ECS_Tick_Late(double delta) {
+	for (long b = 0; b <= Comp_GrBinds_BucketContainer.bucketCounter; ++b) {
+		auto &bkt = Comp_GrBinds_BucketContainer.buckets[b];
+		long count = Comp_GrBinds_BucketContainer.bucketCounter == b ? Comp_GrBinds_BucketContainer.itemCounter >> 32 : maxBucketItemCount;
+		for (long i = 0; i < count; ++i) {
+			auto &grBinds = bkt.compGrBinds[i];
+			if (grBinds.isInstanceBufferNeedingUpdated) {
+				VkDeviceSize byteCount = sizeof(InstPos) * grBinds.instances.Count();
+				VkBuffer transferBuffer;
+				VkDeviceMemory transferMemory;
+				void *deviceData;
+				BeginTransferBuffer(byteCount, transferBuffer, transferMemory, deviceData);
+				memcpy(deviceData, grBinds.instances.GetPtr(), byteCount);
+				{
+					VkCommandBufferBeginInfo cbbi;
+					cbbi.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+					cbbi.pNext = nullptr;
+					cbbi.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+					cbbi.pInheritanceInfo = nullptr;
+
+					vkBeginCommandBuffer(transferCommandBuffer, &cbbi);
+
+					VkBufferCopy vkBufferCopy;
+					vkBufferCopy.srcOffset = 0;
+					vkBufferCopy.dstOffset = 0;
+					vkBufferCopy.size = byteCount;
+
+					vkCmdCopyBuffer(transferCommandBuffer, transferBuffer, grBinds.instanceBuffer, 1, &vkBufferCopy);
+
+					vkEndCommandBuffer(transferCommandBuffer);
+
+					VkSubmitInfo vkSubmitInfo{};
+					vkSubmitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+					vkSubmitInfo.pNext = nullptr;
+					vkSubmitInfo.waitSemaphoreCount = 0;
+					vkSubmitInfo.pWaitSemaphores = nullptr;
+					vkSubmitInfo.pWaitDstStageMask = nullptr;
+					vkSubmitInfo.commandBufferCount = 1;
+					vkSubmitInfo.pCommandBuffers = &transferCommandBuffer;
+					vkSubmitInfo.signalSemaphoreCount = 0;
+					vkSubmitInfo.pSignalSemaphores = nullptr;
+					vkQueueSubmit(transferQueue, 1, &vkSubmitInfo, nullptr);
+					vkQueueWaitIdle(transferQueue);
+					vkResetCommandBuffer(transferCommandBuffer, 0);
+				}
+				EndTransferBuffer(transferBuffer, transferMemory);
+				grBinds.isInstanceBufferNeedingUpdated = false;
+			}
+		}
+	}
+}
+
 CompGrBinds &ECS_CreateGrBinds(EntityHandle entHandle) {
 	assert(entHandle != EntityHandle_MAX);
 
@@ -211,7 +263,8 @@ CompInstance &ECS_CreateInstance(EntityHandle entHandle, EntityHandle entityType
 
 	auto b2 = Buckets_GetBucketIndex(grBindsHandle_t);
 	auto i2 = Buckets_GetItemIndex(grBindsHandle_t);
-	auto &grBinds = Comp_GrBinds_BucketContainer.buckets[b2].compGrBinds[i2];
+	auto *grBinds = &Comp_GrBinds_BucketContainer.buckets[b2].compGrBinds[i2];
+	grBinds->isInstanceBufferNeedingUpdated = true;
 	auto b = Buckets_GetBucketIndex(newHandle);
 	auto i = Buckets_GetItemIndex(newHandle);
 	auto *comp = &Comp_Instance_BucketContainer.buckets[b].instances[i];
@@ -219,13 +272,13 @@ CompInstance &ECS_CreateInstance(EntityHandle entHandle, EntityHandle entityType
 	comp->entHandle = entHandle;
 	comp->grBindsHandle = ent->grBindsHandle;
 	comp->instanceHandle = ent->instanceHandle;
-	comp->index = grBinds.instances.Count();
-	grBinds.instances.Push({
+	comp->index = grBinds->instances.Count();
+	grBinds->instances.Push({
 		.pos = glm::vec3(0),
 		.rot = glm::vec3(1),
 		.scale = glm::vec3(1),
 	});
-	comp->ptr = &grBinds.instances[comp->index];
+	comp->ptr = &grBinds->instances[comp->index];
 	return *comp;
 }