diff --git a/.vs/shader/v14/.suo b/.vs/shader/v14/.suo
index d2da945..ec6cbff 100644
Binary files a/.vs/shader/v14/.suo and b/.vs/shader/v14/.suo differ
diff --git a/model.cpp b/model.cpp
index 3f8d0cd..f7060f5 100644
--- a/model.cpp
+++ b/model.cpp
@@ -112,7 +112,9 @@ void Model::Init(const char*modelPath) {
 void Model::Draw(glm::mat4 & viewMatrix, glm::mat4 projectionMatrix) {
 	glEnable(GL_DEPTH_TEST);
 	mVertexBuffer->Bind();
+	glm::mat4 it = glm::inverseTranspose(mModelMatrix);
 	mShader->Bind(glm::value_ptr(mModelMatrix), glm::value_ptr(viewMatrix), glm::value_ptr(projectionMatrix));
+	glUniformMatrix4fv(glGetUniformLocation(mShader->mProgram, "IT_ModelMatrix"), 1, GL_FALSE, glm::value_ptr(it));
 	glDrawArrays(GL_TRIANGLES, 0, mVertexBuffer->mVertexCount);
 	mVertexBuffer->Unbind();
 }
diff --git a/shader.VC.db b/shader.VC.db
index 9c2b5ca..78937d8 100644
Binary files a/shader.VC.db and b/shader.VC.db differ
diff --git a/shader.cpp b/shader.cpp
index 3615b43..73238ce 100644
--- a/shader.cpp
+++ b/shader.cpp
@@ -42,7 +42,9 @@ void Shader::Bind(float *M, float *V, float*P) {
 		glBindTexture(GL_TEXTURE_2D, iter->second->mTexture);
 		glUniform1i(iter->second->mLocation, iIndex++);
 	}
-
+	for (auto iter = mUniformVec4s.begin(); iter != mUniformVec4s.end(); ++iter) {
+		glUniform4fv(iter->second->mLocation, 1, iter->second->v);
+	}
 	glEnableVertexAttribArray(mPositionLocation);
 	glVertexAttribPointer(mPositionLocation, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex), 0);