Backends, Examples: WebGPU: simplified ifndef (#8381)

backends/imgui_impl_wgpu.cpp

@@ -1015,7 +1015,7 @@ void ImGui_ImplWGPU_DebugPrintAdapterInfo(const WGPUAdapter& adapter)
     wgpuAdapterInfoFreeMembers(info);
 }
 
-#if defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU) || defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) && !defined(__EMSCRIPTEN__)
+#ifndef __EMSCRIPTEN__
 
 #if defined(__APPLE__)
 // MacOS specific: is necessary to compile with "-x objective-c++" flags
@@ -1079,7 +1079,7 @@ WGPUSurface ImGui_ImplWGPU_CreateWGPUSurfaceHelper(ImGui_ImplWGPU_CreateSurfaceI
 #endif
     return surface;
 }
-#endif
+#endif // #ifndef __EMSCRIPTEN__
 
 //-----------------------------------------------------------------------------
 

backends/imgui_impl_wgpu.h

@@ -105,7 +105,7 @@ const char* ImGui_ImplWGPU_GetLogLevelName(WGPULogLevel level);
 #endif
 
 // (Optional) Helper to create a surface on macOS/Wayland/X11/Window
-#if defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU) || defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) && !defined(__EMSCRIPTEN__)
+#ifndef __EMSCRIPTEN__
 struct ImGui_ImplWGPU_CreateSurfaceInfo
 {
     WGPUInstance    Instance;
@@ -116,6 +116,6 @@ struct ImGui_ImplWGPU_CreateSurfaceInfo
     void*           RawInstance; // 0         | 0           | 0         | HINSTANCE
 };
 WGPUSurface ImGui_ImplWGPU_CreateWGPUSurfaceHelper(ImGui_ImplWGPU_CreateSurfaceInfo* info);
-#endif
+#endif // #ifndef __EMSCRIPTEN__
 
 #endif // #ifndef IMGUI_DISABLE

examples/example_glfw_wgpu/main.cpp

@@ -506,7 +506,7 @@ static bool InitWGPU(GLFWwindow* window)
 // As of today (2025/10) there is no "official" support in GLFW to create a surface for WebGPU backend
 // This stub uses "low level" GLFW calls to acquire information from a specific Window Manager.
 // Currently supported platforms: Windows / Linux (X11 and Wayland) / MacOS. Not necessary nor available with EMSCRIPTEN.
-#if !defined(__EMSCRIPTEN__) && (defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU) || defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN))
+#ifndef __EMSCRIPTEN__
 
 #if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
 #define GLFW_HAS_X11_OR_WAYLAND     1
@@ -573,4 +573,4 @@ WGPUSurface CreateWGPUSurface(const WGPUInstance& instance, GLFWwindow* window)
 #endif
     return nullptr;
 }
-#endif
+#endif // #ifndef __EMSCRIPTEN__

examples/example_sdl2_wgpu/main.cpp

@@ -491,7 +491,7 @@ static bool InitWGPU(SDL_Window* window)
 // As of today (2025/10/31) there is no "official" support in SDL2 to create a surface for WebGPU backend.
 // This stub uses "low level" SDL2 calls to acquire information from a specific Window Manager.
 // Currently supported platforms: Windows / Linux (X11 and Wayland) / MacOS. Not necessary nor available with EMSCRIPTEN.
-#if !defined(__EMSCRIPTEN__) && (defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU) || defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN))
+#ifndef __EMSCRIPTEN__
 
 #include <SDL_syswm.h>
 #undef Status           // X11 headers are leaking this and also 'Success', 'Always', 'None', all used in DAWN api. Add #undef if necessary.
@@ -538,4 +538,4 @@ WGPUSurface CreateWGPUSurface(const WGPUInstance& instance, SDL_Window* window)
 #endif
     return nullptr;
 }
-#endif
+#endif // #ifndef __EMSCRIPTEN__

examples/example_sdl3_wgpu/main.cpp

@@ -502,7 +502,7 @@ static bool InitWGPU(SDL_Window* window)
 // As of today (2025/10) there is no "official" support in SDL3 to create a surface for WebGPU backend
 // This stub uses "low level" SDL3 calls to acquire information from a specific Window Manager.
 // Currently supported platforms: Windows / Linux (X11 and Wayland) / MacOS. Not necessary nor available with EMSCRIPTEN.
-#if !defined(__EMSCRIPTEN__) && (defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU) || defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN))
+#ifndef __EMSCRIPTEN__
 
 #if defined(SDL_PLATFORM_WIN32)
 #ifndef WIN32_LEAN_AND_MEAN
@@ -550,4 +550,4 @@ static WGPUSurface CreateWGPUSurface(const WGPUInstance& instance, SDL_Window* w
 #endif
     return nullptr;
 }
-#endif
+#endif // #ifndef __EMSCRIPTEN__