Fix a few bugs

triangle.cc

@@ -376,7 +376,7 @@ uint32_t FindMemoryType(uint32_t valid_image_memory_types,
     VkMemoryPropertyFlags memory_property_flags) {
   for (uint32_t i = 0; i < device_memory_properties.memoryTypeCount; i++) {
     // We don't care about performance, so just choose the first mappable memory type.
-    if ((valid_image_memory_types % (1 << i)) &&
+    if ((valid_image_memory_types & (1 << i)) &&
         ((device_memory_properties.memoryTypes[i].propertyFlags & memory_property_flags) ==
         memory_property_flags)) {
       return i;
@@ -415,7 +415,7 @@ VkDeviceMemory AllocateAndBindMemory(VkPhysicalDevice physical_device, VkDevice
 
 inline VkDeviceMemory AllocateAndBindRenderMemory(VkPhysicalDevice physical_device,
     VkDevice device, VkImage image) {
-  return AllocateAndBindMemory(physical_device, device, image, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT);
+  return AllocateAndBindMemory(physical_device, device, image, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
 }
 
 inline VkDeviceMemory AllocateAndBindScanoutMemory(VkPhysicalDevice physical_device,