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Fixed Vulkan validation error when creating a swapchain on Android

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Sam Lantinga
2026-09-11 13:54:47 -07:00
parent 5e2f8adce9
commit 0628d5c603
1 changed files with 18 additions and 0 deletions
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18
src/render/vulkan/SDL_render_vulkan.c
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@@ -2505,6 +2505,24 @@ static VkResult VULKAN_CreateSwapChain(SDL_Renderer *renderer, int w, int h)
swapchainCreateInfo.presentMode = presentMode;
swapchainCreateInfo.clipped = VK_TRUE;
swapchainCreateInfo.oldSwapchain = rendererData->swapchain;
if (!(renderer->window->flags & SDL_WINDOW_TRANSPARENT)) {
// Set the first supported swap chain composite mode
// Android doesn't support VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR, for example
const VkCompositeAlphaFlagBitsKHR compositeAlphaFlags[] = {
VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR,
VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR
};
for (uint32_t i = 0; i < SDL_arraysize(compositeAlphaFlags); ++i) {
if (rendererData->surfaceCapabilities.supportedCompositeAlpha & compositeAlphaFlags[i]) {
swapchainCreateInfo.compositeAlpha = compositeAlphaFlags[i];
break;
}
}
if (!swapchainCreateInfo.compositeAlpha) {
// Fall back to VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR, unsupported but better than nothing
swapchainCreateInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
}
}
result = vkCreateSwapchainKHR(rendererData->device, &swapchainCreateInfo, NULL, &rendererData->swapchain);
if (swapchainCreateInfo.oldSwapchain != VK_NULL_HANDLE) {