dxgi: Consider vk_format a frontend field.

This is an oversight in eec9c3a2: vk_format specifies the format used for the frontend resources. The backend images could use a different format, depending on what the swapchain supports. Also, introduce the terms "frontend" and "backend" for the two sides of the swapchain, which are probably easier to understand.

dxgi: Consider vk_format a frontend field.
e5c232eb · Giovanni Mascellani · Alexandre Julliard · e1cdc487 · e5c232eb
Commit e5c232eb authored Jun 22, 2023 by Giovanni Mascellani Committed by Alexandre Julliard Jul 04, 2023
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swapchain.c dlls/dxgi/swapchain.c +10 -10

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--- a/dlls/dxgi/swapchain.c
+++ b/dlls/dxgi/swapchain.c
@@ -1024,21 +1024,22 @@ struct d3d12_swapchain
    VkDevice vk_device;
    VkPhysicalDevice vk_physical_device;

-    /* D3D12 side of the swapchain: these objects are visible to the
-     * IDXGISwapChain client, so they must never be recreated, except
-     * when ResizeBuffers*() is called. */
+    /* D3D12 side of the swapchain (frontend): these objects are
+     * visible to the IDXGISwapChain client, so they must never be
+     * recreated, except when ResizeBuffers*() is called. */
    unsigned int buffer_count;
    VkDeviceMemory vk_memory;
    VkImage vk_images[DXGI_MAX_SWAP_CHAIN_BUFFERS];
    ID3D12Resource *buffers[DXGI_MAX_SWAP_CHAIN_BUFFERS];
    unsigned int current_buffer_index;
+    VkFormat vk_format;

-    /* Vulkan side of the swapchain: these objects are also destroyed
-     * and recreated when the Vulkan swapchain becomes out of date or
-     * when the synchronization interval is changed; this operation
-     * should be transparent to the IDXGISwapChain client (except for
-     * timings: recreating the Vulkan swapchain creates a noticeable
-     * delay, unfortunately). */
+    /* Vulkan side of the swapchain (backend): these objects are also
+     * destroyed and recreated when the Vulkan swapchain becomes out
+     * of date or when the synchronization interval is changed; this
+     * operation should be transparent to the IDXGISwapChain client
+     * (except for timings: recreating the Vulkan swapchain creates a
+     * noticeable delay, unfortunately). */
    VkSwapchainKHR vk_swapchain;
    VkCommandPool vk_cmd_pool;
    VkImage vk_swapchain_images[DXGI_MAX_SWAP_CHAIN_BUFFERS];
@@ -1047,7 +1048,6 @@ struct d3d12_swapchain
    unsigned int vk_swapchain_width;
    unsigned int vk_swapchain_height;
    VkPresentModeKHR present_mode;
-    VkFormat vk_format;

    uint32_t vk_image_index;