+ tex_coords.clear();
+ indices.clear();
+}
+
+bool MeshVK::update_vertex_data()
+{
+ if(vertices.empty()) {
+ printf("empty vertices!\n");
+ return false;
+ }
+
+ /* create the buffers */
+
+ int vsz = vertices.size() * sizeof(Vec3);
+ if(!(vk_vertices = vku_create_buffer(vsz,
+ VK_BUFFER_USAGE_VERTEX_BUFFER_BIT))) {
+ fprintf(stderr, "Failed to create the buffer for the vertices.\n");
+ return false;
+ }
+
+ int nsz = normals.size() * sizeof(Vec3);
+ if(!(vk_normals = vku_create_buffer(nsz,
+ VK_BUFFER_USAGE_VERTEX_BUFFER_BIT))) {
+ vku_destroy_buffer(vk_vertices);
+
+ fprintf(stderr, "Failed to create the buffer for the normals.\n");
+ return false;
+ }
+
+ int tsz = tex_coords.size() * sizeof(Vec2);
+ if(!(vk_tex_coords = vku_create_buffer(tsz,
+ VK_BUFFER_USAGE_VERTEX_BUFFER_BIT))) {
+ vku_destroy_buffer(vk_vertices);
+ vku_destroy_buffer(vk_normals);
+
+ fprintf(stderr,
+ "Failed to create the buffer for the texture coordinates.\n");
+ return false;
+ }
+
+ int isz = indices.size() * 2;
+ if(!(vk_indices = vku_create_buffer(isz,
+ VK_BUFFER_USAGE_INDEX_BUFFER_BIT))) {
+ vku_destroy_buffer(vk_vertices);
+ vku_destroy_buffer(vk_normals);
+ vku_destroy_buffer(vk_tex_coords);
+
+ fprintf(stderr, "Failed to create the indices buffer.\n");
+ return false;
+ }
+
+ /* write the buffers */
+
+ if(!vku_write_memory(vk_vertices->mem_pool, vsz, (void*)vertices.data())) {
+ fprintf(stderr, "Failed to write the vertices on GPU.\n");
+ return false;
+ }
+ if(!vku_write_memory(vk_normals->mem_pool, nsz, (void*)normals.data())) {
+ fprintf(stderr, "Failed to write the normalson GPU.\n");
+ return false;
+ }
+ if(!vku_write_memory(vk_tex_coords->mem_pool, tsz,
+ (void*)tex_coords.data())) {
+ fprintf(stderr, "Failed to write the texture coordinates on GPU.\n");
+ return false;
+ }
+ if(!vku_write_memory(vk_indices->mem_pool, isz, (void*)indices.data())) {
+ fprintf(stderr, "Failed to write the indices on GPU.\n");
+ return false;
+ }
+
+ return true;