Squashed 'external/imgui/' changes from 8326dabe5e7..ae8688974bf

ae8688974bf Merge branch 'master' into docking
f7ba6453980 InputText: fixed not filling callback's SelectionEnd. (#7925)
e648dbb59d2 Tables: fixed auto-width columns when using synced-instances of same table. (#7218)
6aade6912a1 Inputs: SetNextItemShortcut() with ImGuiInputFlags_Tooltip doesn't show tooltip when item is active.
dad9f45e3ed Windows: fixed an issue where double-click to collapse could be triggered even while another item is active. (#7841, #7369)
71714eab536 Tables: fixed assertion related to inconsistent outer clipping when sizes are not rounded. (#7957)
11fba027e50 Tables: using table->InnerClipRect more consistently. Fixes an assertion with tables with borders when clipped by parent. (#6765, #3752, #7428)
1ab1e3c6563 Backends: SDL3: rework implementation of ImGuiViewportFlags_NoTaskBarIcon. (#7989)
6ce26ef11d5 AddFont: added assert to better detect uninitialized struct. (#7993)
08b1496b7e5 Backends: Win32: fixed an issue where a viewport destroyed while clicking would hog mouse tracking and temporary lead to incorrect update of HoveredWindow. (#7971)
8ba7efb738d Backends: Win32: fixed an issue where a viewport destroyed while clicking would hog mouse tracking and temporary lead to incorrect update of HoveredWindow. (#7971)
1ac162f2b08 Backends: WGPU: add IMGUI_IMPL_WEBGPU_BACKEND_DAWN/IMGUI_IMPL_WEBGPU_BACKEND_WGPU to support more targets. (#7977, #7969, #6602, #6188, #7523)
4925695ae88 InputText: optimize InputTextCalcTextLenAndLineCount() for inactive multiline path. (#7925)
7ac50bf77d0 InputText: more tidying up of selection search loop.
aef07aea274 InputText: minor tidying up of selection search loop (no need to imply it runs in single line mode)
b53d91a4c40 InputText: optimization for large text: using memchr() instead of strchr() shaves 0.2 ms on 865k multi-line text case. Approximately 20%. (#7925)
44a74509af9 Backends: Win32: fixed direct calls to platform_io.Platform_SetWindowPos()/Platform_SetWindowSize() on windows created by application (typically main viewport).
510b6adc9bb CI: disable month-long PVS Studio warning about expiring licence.
8040c02b32b Viewports: fixed an issue where a window manually constrained to the main viewport while crossing over main viewport bounds isn't translated properly. (#7985)
dab63231d88 Misc: Made it accepted to call SetMouseCursor() with any out-of-bound value, as a way to allow hacking in custom cursors if desirable.

git-subtree-dir: external/imgui
git-subtree-split: ae8688974bf85530606c9fe9aab1e2c7b8f22719

backends/imgui_impl_wgpu.cpp

@@ -18,6 +18,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-09-16: Added support for optional IMGUI_IMPL_WEBGPU_BACKEND_DAWN / IMGUI_IMPL_WEBGPU_BACKEND_WGPU define to handle ever-changing native implementations. (#7977)
 //  2024-01-22: Added configurable PipelineMultisampleState struct. (#7240)
 //  2024-01-22: (Breaking) ImGui_ImplWGPU_Init() now takes a ImGui_ImplWGPU_InitInfo structure instead of variety of parameters, allowing for easier further changes.
 //  2024-01-22: Fixed pipeline layout leak. (#7245)
@@ -37,6 +38,18 @@
 //  2021-02-18: Change blending equation to preserve alpha in output buffer.
 //  2021-01-28: Initial version.
 
+// When targeting native platforms (i.e. NOT emscripten), one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN
+// or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be provided. See imgui_impl_wgpu.h for more details.
+#ifndef __EMSCRIPTEN__
+    #if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) == defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
+    #error exactly one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be defined!
+    #endif
+#else
+    #if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) || defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
+    #error neither IMGUI_IMPL_WEBGPU_BACKEND_DAWN nor IMGUI_IMPL_WEBGPU_BACKEND_WGPU may be defined if targeting emscripten!
+    #endif
+#endif
+
 #include "imgui.h"
 #ifndef IMGUI_DISABLE
 #include "imgui_impl_wgpu.h"
@@ -247,7 +260,11 @@ static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModule(const c
     ImGui_ImplWGPU_Data* bd = ImGui_ImplWGPU_GetBackendData();
 
     WGPUShaderModuleWGSLDescriptor wgsl_desc = {};
+#ifdef IMGUI_IMPL_WEBGPU_BACKEND_DAWN
+    wgsl_desc.chain.sType = WGPUSType_ShaderSourceWGSL;
+#else
     wgsl_desc.chain.sType = WGPUSType_ShaderModuleWGSLDescriptor;
+#endif
     wgsl_desc.code = wgsl_source;
 
     WGPUShaderModuleDescriptor desc = {};
@@ -662,7 +679,11 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
     // Create depth-stencil State
     WGPUDepthStencilState depth_stencil_state = {};
     depth_stencil_state.format = bd->depthStencilFormat;
+#ifdef IMGUI_IMPL_WEBGPU_BACKEND_DAWN
+    depth_stencil_state.depthWriteEnabled = WGPUOptionalBool_False;
+#else
     depth_stencil_state.depthWriteEnabled = false;
+#endif
     depth_stencil_state.depthCompare = WGPUCompareFunction_Always;
     depth_stencil_state.stencilFront.compare = WGPUCompareFunction_Always;
     depth_stencil_state.stencilFront.failOp = WGPUStencilOperation_Keep;
@@ -732,7 +753,15 @@ bool ImGui_ImplWGPU_Init(ImGui_ImplWGPU_InitInfo* init_info)
     // Setup backend capabilities flags
     ImGui_ImplWGPU_Data* bd = IM_NEW(ImGui_ImplWGPU_Data)();
     io.BackendRendererUserData = (void*)bd;
+#if defined(__EMSCRIPTEN__)
+    io.BackendRendererName = "imgui_impl_webgpu_emscripten";
+#elif defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN)
+    io.BackendRendererName = "imgui_impl_webgpu_dawn";
+#elif defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
+    io.BackendRendererName = "imgui_impl_webgpu_wgpu";
+#else
     io.BackendRendererName = "imgui_impl_webgpu";
+#endif
     io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
 
     bd->initInfo = *init_info;