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Backends: Vulkan: helper for creating a swapchain selects VkSwapchainCreateInfoKHR's compositeAlpha based on cap.supportedCompositeAlpha. (#8784)

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ocornut
2025-11-24 18:11:23 +01:00
parent 98636f4a23
commit 3a45bae9dc
2 changed files with 11 additions and 1 deletions
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8
backends/imgui_impl_vulkan.cpp
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@@ -27,6 +27,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2025-11-24: Vulkan: Helper for creating a swap-chain (used by examples and multi-viewports) selects VkSwapchainCreateInfoKHR's compositeAlpha based on cap.supportedCompositeAlpha. (#8784)
// 2025-10-15: Vulkan: Added IMGUI_IMPL_VULKAN_VOLK_FILENAME to configure path to volk.h header. (#9008)
// 2025-09-26: *BREAKING CHANGE*: moved some fields in ImGui_ImplVulkan_InitInfo: init_info.RenderPass --> init_info.PipelineInfoMain.RenderPass, init_info.Subpass --> init_info.PipelineInfoMain.Subpass, init_info.MSAASamples --> init_info.PipelineInfoMain.MSAASamples, init_info.PipelineRenderingCreateInfo --> init_info.PipelineInfoMain.PipelineRenderingCreateInfo.
// 2025-09-26: *BREAKING CHANGE*: renamed ImGui_ImplVulkan_MainPipelineCreateInfo to ImGui_ImplVulkan_PipelineInfo. Introduced very recently so shouldn't affect many users.
@@ -1637,7 +1638,12 @@ void ImGui_ImplVulkanH_CreateWindowSwapChain(VkPhysicalDevice physical_device, V
info.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | image_usage;
info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE; // Assume that graphics family == present family
info.preTransform = (cap.supportedTransforms & VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR) ? VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR : cap.currentTransform;
info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
if (cap.supportedCompositeAlpha & VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR)
info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
else if (cap.supportedCompositeAlpha & VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR)
info.compositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR;
else
IM_ASSERT(false && "No supported composite alpha mode found!");
info.presentMode = wd->PresentMode;
info.clipped = VK_TRUE;
info.oldSwapchain = old_swapchain;