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Backends: Vulkan: use nonCoherentAtomSize to align upload_size, fixing validation error on some setups. (#8743, #8744)

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This commit is contained in:
Thomas Quante
2025-06-27 15:52:39 +02:00
committed by ocornut
parent 68046106dd
commit 8e3aac5744
2 changed files with 11 additions and 1 deletions
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10
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)
// 2025-06-27: Vulkan: Fixed validation errors during texture upload/update by aligning upload size to 'nonCoherentAtomSize'. (#8743, #8744)
// 2025-06-11: Vulkan: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas. Removed ImGui_ImplVulkan_CreateFontsTexture() and ImGui_ImplVulkan_DestroyFontsTexture().
// 2025-05-07: Vulkan: Fixed validation errors during window detach in multi-viewport mode. (#8600, #8176)
// 2025-05-07: Vulkan: Load dynamic rendering functions using vkGetDeviceProcAddr() + try both non-KHR and KHR versions. (#8600, #8326, #8365)
@@ -244,6 +245,7 @@ struct ImGui_ImplVulkan_Data
{
ImGui_ImplVulkan_InitInfo VulkanInitInfo;
VkDeviceSize BufferMemoryAlignment;
VkDeviceSize NonCoherentAtomSize;
VkPipelineCreateFlags PipelineCreateFlags;
VkDescriptorSetLayout DescriptorSetLayout;
VkPipelineLayout PipelineLayout;
@@ -264,6 +266,7 @@ struct ImGui_ImplVulkan_Data
{
memset((void*)this, 0, sizeof(*this));
BufferMemoryAlignment = 256;
NonCoherentAtomSize = 64;
}
};
@@ -751,7 +754,7 @@ void ImGui_ImplVulkan_UpdateTexture(ImTextureData* tex)
VkBuffer upload_buffer;
VkDeviceSize upload_pitch = upload_w * tex->BytesPerPixel;
VkDeviceSize upload_size = upload_h * upload_pitch;
VkDeviceSize upload_size = AlignBufferSize(upload_h * upload_pitch, bd->NonCoherentAtomSize);
{
VkBufferCreateInfo buffer_info = {};
buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
@@ -1225,6 +1228,11 @@ bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info)
IM_ASSERT(info->RenderPass != VK_NULL_HANDLE);
bd->VulkanInitInfo = *info;
VkPhysicalDeviceProperties properties;
vkGetPhysicalDeviceProperties(info->PhysicalDevice, &properties);
bd->NonCoherentAtomSize = properties.limits.nonCoherentAtomSize;
#ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
if (v->PipelineRenderingCreateInfo.pColorAttachmentFormats != NULL)

2
docs/CHANGELOG.txt
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@@ -45,6 +45,8 @@ Other changes:
- Backends: OSX: added ImGuiMouseCursor_Wait and ImGuiMouseCursor_Progress
mouse cursor support. (#8739) [@cfillion]
- Backends: Vulkan: use nonCoherentAtomSize to align upload_size, fixing
validation error on some setups. (#8743, #8744) [@tquante]
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