vk_swapchain: Prefer linear swapchain format when presenting sRGB images
Fixes broken sRGB when presenting from a secondary GPU.
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		| @@ -356,7 +356,7 @@ void VKBlitScreen::CreateDescriptorPool() { | ||||
| void VKBlitScreen::CreateRenderPass() { | ||||
|     const VkAttachmentDescription color_attachment{ | ||||
|         .flags = 0, | ||||
|         .format = swapchain.GetImageFormat(), | ||||
|         .format = swapchain.GetImageViewFormat(), | ||||
|         .samples = VK_SAMPLE_COUNT_1_BIT, | ||||
|         .loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR, | ||||
|         .storeOp = VK_ATTACHMENT_STORE_OP_STORE, | ||||
|   | ||||
| @@ -20,16 +20,15 @@ namespace Vulkan { | ||||
|  | ||||
| namespace { | ||||
|  | ||||
| VkSurfaceFormatKHR ChooseSwapSurfaceFormat(vk::Span<VkSurfaceFormatKHR> formats, bool srgb) { | ||||
| VkSurfaceFormatKHR ChooseSwapSurfaceFormat(vk::Span<VkSurfaceFormatKHR> formats) { | ||||
|     if (formats.size() == 1 && formats[0].format == VK_FORMAT_UNDEFINED) { | ||||
|         VkSurfaceFormatKHR format; | ||||
|         format.format = VK_FORMAT_B8G8R8A8_UNORM; | ||||
|         format.colorSpace = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR; | ||||
|         return format; | ||||
|     } | ||||
|     const auto& found = std::find_if(formats.begin(), formats.end(), [srgb](const auto& format) { | ||||
|         const auto request_format = srgb ? VK_FORMAT_B8G8R8A8_SRGB : VK_FORMAT_B8G8R8A8_UNORM; | ||||
|         return format.format == request_format && | ||||
|     const auto& found = std::find_if(formats.begin(), formats.end(), [](const auto& format) { | ||||
|         return format.format == VK_FORMAT_B8G8R8A8_UNORM && | ||||
|                format.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR; | ||||
|     }); | ||||
|     return found != formats.end() ? *found : formats[0]; | ||||
| @@ -145,7 +144,7 @@ void VKSwapchain::CreateSwapchain(const VkSurfaceCapabilitiesKHR& capabilities, | ||||
|     const auto formats{physical_device.GetSurfaceFormatsKHR(surface)}; | ||||
|     const auto present_modes{physical_device.GetSurfacePresentModesKHR(surface)}; | ||||
|  | ||||
|     const VkSurfaceFormatKHR surface_format{ChooseSwapSurfaceFormat(formats, srgb)}; | ||||
|     const VkSurfaceFormatKHR surface_format{ChooseSwapSurfaceFormat(formats)}; | ||||
|     const VkPresentModeKHR present_mode{ChooseSwapPresentMode(present_modes)}; | ||||
|  | ||||
|     u32 requested_image_count{capabilities.minImageCount + 1}; | ||||
| @@ -191,7 +190,7 @@ void VKSwapchain::CreateSwapchain(const VkSurfaceCapabilitiesKHR& capabilities, | ||||
|  | ||||
|     images = swapchain.GetImages(); | ||||
|     image_count = static_cast<u32>(images.size()); | ||||
|     image_format = surface_format.format; | ||||
|     image_view_format = srgb ? VK_FORMAT_B8G8R8A8_SRGB : VK_FORMAT_B8G8R8A8_UNORM; | ||||
| } | ||||
|  | ||||
| void VKSwapchain::CreateSemaphores() { | ||||
| @@ -207,7 +206,7 @@ void VKSwapchain::CreateImageViews() { | ||||
|         .flags = 0, | ||||
|         .image = {}, | ||||
|         .viewType = VK_IMAGE_VIEW_TYPE_2D, | ||||
|         .format = image_format, | ||||
|         .format = image_view_format, | ||||
|         .components = | ||||
|             { | ||||
|                 .r = VK_COMPONENT_SWIZZLE_IDENTITY, | ||||
|   | ||||
| @@ -68,8 +68,8 @@ public: | ||||
|         return *image_views[index]; | ||||
|     } | ||||
|  | ||||
|     VkFormat GetImageFormat() const { | ||||
|         return image_format; | ||||
|     VkFormat GetImageViewFormat() const { | ||||
|         return image_view_format; | ||||
|     } | ||||
|  | ||||
| private: | ||||
| @@ -96,7 +96,7 @@ private: | ||||
|     u32 image_index{}; | ||||
|     u32 frame_index{}; | ||||
|  | ||||
|     VkFormat image_format{}; | ||||
|     VkFormat image_view_format{}; | ||||
|     VkExtent2D extent{}; | ||||
|  | ||||
|     bool current_srgb{}; | ||||
|   | ||||
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