Backends: Vulkan: added ImGui_ImplVulkan_PipelineInfo::ExtraDynamicStates. (#9211) This new setting allows an application to force the pipeline created by vulkan backend to specify more dynamic states than just default viewport and scissor. It is useful e.g. when using draw list callbacks, e.g. adding VK_DYNAMIC_STATE_COLOR_BLEND_EQUATION_EXT to be able to use vkCmdSetColorBlendEquationEXT inside callbacks.
diff --git a/backends/imgui_impl_vulkan.cpp b/backends/imgui_impl_vulkan.cpp index c3a3049..7bfd48a 100644 --- a/backends/imgui_impl_vulkan.cpp +++ b/backends/imgui_impl_vulkan.cpp
@@ -27,6 +27,7 @@ // CHANGELOG // (minor and older changes stripped away, please see git history for details) +// 2026-03-11: Vulkan: Added ImGui_ImplVulkan_PipelineInfo::ExtraDynamicStates[] to allow specifying extra dynamic states to add when creating the VkPipeline. (#9211) // 2025-09-26: [Helpers] *BREAKING CHANGE*: Vulkan: Helper ImGui_ImplVulkanH_DestroyWindow() does not call vkDestroySurfaceKHR(): as surface is created by caller of ImGui_ImplVulkanH_CreateOrResizeWindow(), it is more consistent that we don't destroy it. (#9163) // 2026-01-05: [Helpers] *BREAKING CHANGE*: Vulkan: Helper for creating render pass uses ImGui_ImplVulkanH_Window::AttachmentDesc to create render pass. Removed ClearEnabled. (#9152) // 2025-11-24: [Helpers] Vulkan: Helper for creating a swap-chain (used by examples and multi-viewports) selects VkSwapchainCreateInfoKHR's compositeAlpha based on cap.supportedCompositeAlpha. (#8784) @@ -1009,11 +1010,13 @@ blend_info.attachmentCount = 1; blend_info.pAttachments = color_attachment; - VkDynamicState dynamic_states[2] = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR }; + ImVector<VkDynamicState> dynamic_states = info->ExtraDynamicStates; + dynamic_states.push_back(VK_DYNAMIC_STATE_VIEWPORT); + dynamic_states.push_back(VK_DYNAMIC_STATE_SCISSOR); VkPipelineDynamicStateCreateInfo dynamic_state = {}; dynamic_state.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO; - dynamic_state.dynamicStateCount = (uint32_t)IM_COUNTOF(dynamic_states); - dynamic_state.pDynamicStates = dynamic_states; + dynamic_state.dynamicStateCount = dynamic_states.Size; + dynamic_state.pDynamicStates = dynamic_states.Data; VkGraphicsPipelineCreateInfo create_info = {}; create_info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
diff --git a/backends/imgui_impl_vulkan.h b/backends/imgui_impl_vulkan.h index 5b3baf0..c3fef51 100644 --- a/backends/imgui_impl_vulkan.h +++ b/backends/imgui_impl_vulkan.h
@@ -86,6 +86,7 @@ VkRenderPass RenderPass; // Ignored if using dynamic rendering uint32_t Subpass; // VkSampleCountFlagBits MSAASamples = {}; // 0 defaults to VK_SAMPLE_COUNT_1_BIT + ImVector<VkDynamicState> ExtraDynamicStates; // Optional, allows to insert more dynamic states into our VkPipeline #ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING VkPipelineRenderingCreateInfoKHR PipelineRenderingCreateInfo; // Optional, valid if .sType == VK_STRUCTURE_TYPE_PIPELINE_RENDERING_CREATE_INFO_KHR #endif
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt index 7aac388..ff03643 100644 --- a/docs/CHANGELOG.txt +++ b/docs/CHANGELOG.txt
@@ -102,6 +102,8 @@ - Emscripten: fixed minor rendering issues with our HTML shell. (#9281) [@ypujante] - hidden small blue outline when canvas is focused on Chrome. - hidden scrollbar in Firefox. + - Vulkan: added ImGui_ImplVulkan_PipelineInfo::ExtraDynamicStates[] to allow specifying + extra dynamic states to add when creating the VkPipeline. (#9211) [@DziubanMaciej] - WebGPU: fixed undefined behaviors in example code for requesting adapter and device. (#9246, #9256) [@r-lyeh] - GLFW/SDL2/SDL3+WebGPU: removed suport for Emscripten <4.0.10. (#9281) [@ypujante]