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The VK_KHR_CREATE_RENDERPASS_2_EXTENSION_NAME extension provides a new set of APIs that allow developers to create and manage render passes. The key APIs provided by the extension include:
To use this extension, you must define the macro VK_KHR_CREATE_RENDERPASS_2_EXTENSION_NAME when enabling device extensions. In modern Vulkan development, this functionality has been promoted to Vulkan 1.2 Core, meaning you can use vkCreateRenderPass2 without the KHR suffix if your application targets version 1.2 or higher. vk-khr-create-renderpass-2-extension-name
VK_KHR_create_renderpass2 modernized Vulkan’s render pass creation, solving extensibility and multiview shortcomings. Promoted to Vulkan 1.2 core, it is now the standard way to create and begin render passes in any Vulkan application targeting modern hardware. Generally,
Is there a performance overhead to using VK_KHR_create_renderpass2_extension_name ? Generally, . The function vkCreateRenderPass2KHR is a CPU-side creation function. Once the render pass object is created, the GPU executes it identically to a version 1 render pass. In fact, because the extension allows more precise load/store control, it can often lead to better performance by avoiding unnecessary tile memory loads on tile-based deferred rendering (TBDR) GPUs (like mobile Mali/Adreno or Apple Silicon). vk-khr-create-renderpass-2-extension-name
: Use VkSubpassDescription2 to group rendering commands and specify subpass dependencies . Why Use It Today?
Thus, VK_KHR_create_renderpass2 was introduced to provide a way to create render passes.