std::string getGlslSamplerType (const tcu::TextureFormat& format, vk::VkImageViewType type);
const char* getGlslInputFormatType (const vk::VkFormat format);
const char* getGlslFormatType (const vk::VkFormat format);
+const char* getGlslAttachmentType (const vk::VkFormat format);
+const char* getGlslInputAttachmentType (const vk::VkFormat format);
+bool isPackedType (const vk::VkFormat format);
+bool isComponentSwizzled (const vk::VkFormat format);
+int getNumUsedChannels (const vk::VkFormat format);
class Buffer
{