diff --git a/.gitignore b/.gitignore
index 44fb2b6..78bbeaf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,3 +37,4 @@ data/
 # vs compile file
 out/
 .vs/
+*.zip
diff --git a/homework/homework1/homework1.cpp b/homework/homework1/homework1.cpp
index 498f666..4705722 100644
--- a/homework/homework1/homework1.cpp
+++ b/homework/homework1/homework1.cpp
@@ -234,7 +234,10 @@ VulkanglTFModel::~VulkanglTFModel()
 				memcpy(skins[i].inverseBindMatrices.data(), &buffer.data[accessor.byteOffset + bufferview.byteOffset], accessor.count * sizeof(glm::mat4));
 
 				//create a host visible shader buffer to store inverse bind matrices for this skin
-				VK_CHECK_RESULT(vulkanDevice->createBuffer(VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
+				VK_CHECK_RESULT(
+					vulkanDevice->createBuffer(
+					VK_BUFFER_USAGE_STORAGE_BUFFER_BIT,
+					VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
 					&skins[i].ssbo,
 					sizeof(glm::mat4) * skins[i].inverseBindMatrices.size(),
 					skins[i].inverseBindMatrices.data()));
@@ -327,9 +330,12 @@ VulkanglTFModel::~VulkanglTFModel()
 				uint32_t firstIndex = static_cast<uint32_t>(indexBuffer.size());
 				uint32_t vertexStart = static_cast<uint32_t>(vertexBuffer.size());
 				uint32_t indexCount = 0;
+				//vertices 
 				const float* positionBuffer = nullptr;
 				const float* normalsBuffer = nullptr;
 				const float* texcoordsBuffer = nullptr;
+				const float* tangentsBuffer = nullptr;
+				//skin joints
 				const float* jointWeightsBuffer = nullptr;
 				const uint16_t * jointIndicesBuffer = nullptr;
 				size_t vertexCount = 0;
@@ -377,9 +383,9 @@ VulkanglTFModel::~VulkanglTFModel()
 					{
 						Vertex vert{};
 						vert.pos = glm::vec4(glm::make_vec3(&positionBuffer[v * 3]), 1.0f);
-						vert.uv = texcoordsBuffer ? glm::make_vec2(&texcoordsBuffer[v*2]):glm::vec4(0.0f);
+						vert.uv = texcoordsBuffer ? glm::make_vec2(&texcoordsBuffer[v*2]) : glm::vec3(0.0f);
 						vert.normal = glm::normalize(glm::vec3(normalsBuffer ? glm::make_vec3(&normalsBuffer[v * 3]) : glm::vec3(0.0f)));
-						vert.color = glm::vec3(1.0f);
+						vert.color = glm::vec3(1.0f,1.0f,nodeIndex);
 						vert.jointIndices = hasSkin ? glm::vec4(glm::make_vec4(&jointIndicesBuffer[v * 4])) : glm::vec4(0.0f);
 						vert.jointWeights = hasSkin ? glm::make_vec4(&jointWeightsBuffer[v * 4]) : glm::vec4(0.0f);
 						vertexBuffer.push_back(vert);
@@ -597,7 +603,7 @@ VulkanglTFModel::~VulkanglTFModel()
 				}
 			}
 		}
-		for (auto& child : node.children) {
+		for (auto &child : node.children) {
 			drawNode(commandBuffer, pipelineLayout, *child);
 		}
 	}
@@ -645,6 +651,7 @@ VulkanExample::~VulkanExample()
 
 
 		shaderData.buffer.destroy();
+		
 	}
 
 void VulkanExample::getEnabledFeatures()
@@ -660,7 +667,7 @@ void VulkanExample::getEnabledFeatures()
 		VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
 
 		VkClearValue clearValues[2];
-		
+		clearValues[0].color = defaultClearColor;
 		clearValues[0].color = { { 0.25f, 0.25f, 0.25f, 1.0f } };;
 		clearValues[1].depthStencil = { 1.0f, 0 };