Examples: Vulkan: Added missing support for 32-bit indices (#define ImDrawIdx unsigned int). + demo typo

docs/CHANGELOG.txt

@@ -44,6 +44,7 @@ Other Changes:
 - Examples: OpenGL: Added a dummy GL call + comments in ImGui_ImplOpenGL3_Init() to detect uninitialized
   GL function loaders early, and help users understand what they are missing. (#2421)
 - Examples: OpenGL3: Minor tweaks + not calling glBindBuffer more than necessary in the render loop.
+- Examples: Vulkan: Added missing support for 32-bit indices (#define ImDrawIdx unsigned int).
 - Examples: DirectX9: Fixed erroneous assert in ImGui_ImplDX9_InvalidateDeviceObjects(). (#2454)
 - Examples: FreeGLUT: Made io.DeltaTime always > 0. (#2430)
 

examples/imgui_impl_vulkan.cpp

@@ -13,6 +13,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-04-01: Vulkan: Support for 32-bit index buffer (#define ImDrawIdx unsigned int).
 //  2019-02-16: Vulkan: Viewport and clipping rectangles correctly using draw_data->FramebufferScale to allow retina display.
 //  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
 //  2018-08-25: Vulkan: Fixed mishandled VkSurfaceCapabilitiesKHR::maxImageCount=0 case.
@@ -216,9 +217,9 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
     // Create the Vertex and Index buffers:
     size_t vertex_size = draw_data->TotalVtxCount * sizeof(ImDrawVert);
     size_t index_size = draw_data->TotalIdxCount * sizeof(ImDrawIdx);
-    if (!fd->VertexBuffer || fd->VertexBufferSize < vertex_size)
+    if (fd->VertexBuffer == VK_NULL_HANDLE || fd->VertexBufferSize < vertex_size)
         CreateOrResizeBuffer(fd->VertexBuffer, fd->VertexBufferMemory, fd->VertexBufferSize, vertex_size, VK_BUFFER_USAGE_VERTEX_BUFFER_BIT);
-    if (!fd->IndexBuffer || fd->IndexBufferSize < index_size)
+    if (fd->IndexBuffer == VK_NULL_HANDLE || fd->IndexBufferSize < index_size)
         CreateOrResizeBuffer(fd->IndexBuffer, fd->IndexBufferMemory, fd->IndexBufferSize, index_size, VK_BUFFER_USAGE_INDEX_BUFFER_BIT);
 
     // Upload vertex/index data into a single contiguous GPU buffer
@@ -262,7 +263,7 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
         VkBuffer vertex_buffers[1] = { fd->VertexBuffer };
         VkDeviceSize vertex_offset[1] = { 0 };
         vkCmdBindVertexBuffers(command_buffer, 0, 1, vertex_buffers, vertex_offset);
-        vkCmdBindIndexBuffer(command_buffer, fd->IndexBuffer, 0, VK_INDEX_TYPE_UINT16);
+        vkCmdBindIndexBuffer(command_buffer, fd->IndexBuffer, 0, sizeof(ImDrawIdx) == 2 ? VK_INDEX_TYPE_UINT16 : VK_INDEX_TYPE_UINT32);
     }
 
     // Setup viewport:

imgui_demo.cpp

@@ -1546,7 +1546,7 @@ static void ShowDemoWindowWidgets()
             "IsItemEdited() = %d\n"
             "IsItemActivated() = %d\n"
             "IsItemDeactivated() = %d\n"
-            "IsItemDeactivatedEdit() = %d\n"
+            "IsItemDeactivatedAfterEdit() = %d\n"
             "IsItemVisible() = %d\n"
             "GetItemRectMin() = (%.1f, %.1f)\n"
             "GetItemRectMax() = (%.1f, %.1f)\n"