backends/imgui_impl_sdlrenderer3.cpp - external/github.com/ocornut/imgui - Git at Google


            
            // dear imgui: Renderer Backend for SDL_Renderer for SDL3

            
            // (Requires: SDL 3.1.8+)


            // Note that SDL_Renderer is an _optional_ component of SDL3, which IMHO is now largely obsolete.

            
            // For a multi-platform app consider using other technologies:

            
            // - SDL3+SDL_GPU: SDL_GPU is SDL3 new graphics abstraction API.

            
            // - SDL3+DirectX, SDL3+OpenGL, SDL3+Vulkan: combine SDL with dedicated renderers.

            
            // If your application wants to render any non trivial amount of graphics other than UI,

            
            // please be aware that SDL_Renderer currently offers a limited graphic API to the end-user

            
            // and it might be difficult to step out of those boundaries.


            // Implemented features:

            
            //  [X] Renderer: User texture binding. Use 'SDL_Texture*' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!

            
            //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).

            
            //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).

            
            //  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplSDLRenderer3_GetRenderState().


            // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.

            
            // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.

            
            // Learn about Dear ImGui:

            
            // - FAQ                  https://dearimgui.com/faq

            
            // - Getting Started      https://dearimgui.com/getting-started

            
            // - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).

            
            // - Introduction, links and more at the top of imgui.cpp


            // CHANGELOG

            
            // (minor and older changes stripped away, please see git history for details)

            
            //  2026-09-17: Restore modified texture scale modes at the end of RenderDrawData(). Added DrawCallback_SetSamplerFromTex support. Added CurrentScaleMode in ImGui_ImplSDLRenderer3_RenderState (#9543, #9378)

            
            //  2026-07-15: Fixed default sampler state to be linear (broken 2026-04-23). (#9470, #9378)

            
            //  2026-04-23: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState, DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest. (#9378)

            
            //  2026-03-12: Fixed invalid assert in ImGui_ImplSDLRenderer3_UpdateTexture() if ImTextureID_Invalid is defined to be != 0, which became the default since 2026-03-12. (#9295)

            
            //  2025-09-18: Call platform_io.ClearRendererHandlers() on shutdown.

            
            //  2025-06-11: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas. Removed ImGui_ImplSDLRenderer3_CreateFontsTexture() and ImGui_ImplSDLRenderer3_DestroyFontsTexture().

            
            //  2025-01-18: Use endian-dependent RGBA32 texture format, to match SDL_Color.

            
            //  2024-10-09: Expose selected render state in ImGui_ImplSDLRenderer3_RenderState, which you can access in 'void* platform_io.Renderer_RenderState' during draw callbacks.

            
            //  2024-07-01: Update for SDL3 api changes: SDL_RenderGeometryRaw() uint32 version was removed (SDL#9009).

            
            //  2024-05-14: *BREAKING CHANGE* ImGui_ImplSDLRenderer3_RenderDrawData() requires SDL_Renderer* passed as parameter.

            
            //  2024-02-12: Amend to query SDL_RenderViewportSet() and restore viewport accordingly.

            
            //  2023-05-30: Initial version.


            #include "imgui.h"

            
            #ifndef IMGUI_DISABLE

            
            #include "imgui_impl_sdlrenderer3.h"

            
            #include <stdint.h>     // intptr_t


            // Clang warnings with -Weverything

            
            #if defined(__clang__)

            
            #pragma clang diagnostic push

            
            #pragma clang diagnostic ignored "-Wsign-conversion"    // warning: implicit conversion changes signedness

            
            #elif defined(__GNUC__)

            
            #pragma GCC diagnostic ignored "-Wfloat-equal"          // warning: comparing floating-point with '==' or '!=' is unsafe

            
            #endif


            // SDL

            
            #include <SDL3/SDL_render.h>

            
            #include <SDL3/SDL_version.h>

            
            #if !SDL_VERSION_ATLEAST(3,0,0)

            
            #error This backend requires SDL 3.0.0+

            
            #endif


            // SDL_Renderer data

            
            struct ImGui_ImplSDLRenderer3_TexScaleModeEntry

            
            {

            
                SDL_Texture*    Texture;

            
                SDL_ScaleMode   ScaleModeBackup;

            
            };


            struct ImGui_ImplSDLRenderer3_Data

            
            {

            
                SDL_Renderer*           Renderer;       // Main viewport's renderer

            
                ImVector<SDL_FColor>    ColorBuffer;

            
                ImVector<ImGui_ImplSDLRenderer3_TexScaleModeEntry> TexScaleModeBackups;  // Backup of texture scale modes


                ImGui_ImplSDLRenderer3_Data()   { memset((void*)this, 0, sizeof(*this)); }

            
            };


            // Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts

            
            // It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.

            
            static ImGui_ImplSDLRenderer3_Data* ImGui_ImplSDLRenderer3_GetBackendData()

            
            {

            
                return ImGui::GetCurrentContext() ? (ImGui_ImplSDLRenderer3_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;

            
            }


            ImGui_ImplSDLRenderer3_RenderState* ImGui_ImplSDLRenderer3_GetRenderState()

            
            {

            
                return (ImGui_ImplSDLRenderer3_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;

            
            }


            // Functions

            
            static void ImGui_ImplSDLRenderer3_SetupRenderState(SDL_Renderer* renderer)

            
            {

            
                ImGui_ImplSDLRenderer3_RenderState* render_state = ImGui_ImplSDLRenderer3_GetRenderState();


                // Clear out any viewports and cliprect set by the user

            
                // FIXME: Technically speaking there are lots of other things we could backup/setup/restore during our render process.

            
                SDL_SetRenderViewport(renderer, nullptr);

            
                SDL_SetRenderClipRect(renderer, nullptr);

            
                render_state->CurrentScaleMode = SDL_SCALEMODE_LINEAR;

            
            }


            void ImGui_ImplSDLRenderer3_NewFrame()

            
            {

            
                ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();

            
                IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDLRenderer3_Init()?");

            
                IM_UNUSED(bd);

            
            }


            // https://github.com/libsdl-org/SDL/issues/9009

            
            static int SDL_RenderGeometryRaw8BitColor(SDL_Renderer* renderer, ImVector<SDL_FColor>& colors_out, SDL_Texture* texture, const float* xy, int xy_stride, const SDL_Color* color, int color_stride, const float* uv, int uv_stride, int num_vertices, const void* indices, int num_indices, int size_indices)

            
            {

            
                const Uint8* color2 = (const Uint8*)color;

            
                colors_out.resize(num_vertices);

            
                SDL_FColor* color3 = colors_out.Data;

            
                for (int i = 0; i < num_vertices; i++)

            
                {

            
                    color3[i].r = color->r / 255.0f;

            
                    color3[i].g = color->g / 255.0f;

            
                    color3[i].b = color->b / 255.0f;

            
                    color3[i].a = color->a / 255.0f;

            
                    color2 += color_stride;

            
                    color = (const SDL_Color*)color2;

            
                }

            
                return SDL_RenderGeometryRaw(renderer, texture, xy, xy_stride, color3, sizeof(*color3), uv, uv_stride, num_vertices, indices, num_indices, size_indices);

            
            }


            // Draw callbacks

            
            static void ImGui_ImplSDLRenderer3_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)   {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.

            
            static void ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)   { ImGui_ImplSDLRenderer3_RenderState* render_state = ImGui_ImplSDLRenderer3_GetRenderState(); render_state->CurrentScaleMode = SDL_SCALEMODE_LINEAR; }

            
            static void ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*)  { ImGui_ImplSDLRenderer3_RenderState* render_state = ImGui_ImplSDLRenderer3_GetRenderState(); render_state->CurrentScaleMode = SDL_SCALEMODE_NEAREST; }

            
            static void ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerFromTex(const ImDrawList*, const ImDrawCmd*)  { ImGui_ImplSDLRenderer3_RenderState* render_state = ImGui_ImplSDLRenderer3_GetRenderState(); render_state->CurrentScaleMode = SDL_SCALEMODE_INVALID; } // SDL_SCALEMODE_INVALID = use/keep value in texture.


            // SDLRenderer has various design issues which makes it hard to do it compared to regular graphics API.

            
            // - scale/filtering mode is tied to a texture.

            
            // - scale/filtering mode is not queued as part of the SDL_RenderGeometryXXX commands, so a change in one texture requires a flush.

            
            static void ImGui_ImplSDLRenderer3_TexScaleModeUpdate(SDL_Renderer* renderer, SDL_Texture* tex, SDL_ScaleMode desired_scale_mode)

            
            {

            
                ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();

            
                if (desired_scale_mode != SDL_SCALEMODE_INVALID)

            
                {

            
                    // Enforce a scale mode

            
                    SDL_ScaleMode tex_scale_mode = desired_scale_mode;

            
                    if (!SDL_GetTextureScaleMode(tex, &tex_scale_mode) || tex_scale_mode == desired_scale_mode)

            
                        return;

            
                    SDL_FlushRenderer(renderer);

            
                    SDL_SetTextureScaleMode(tex, desired_scale_mode);


                    // Store backup of old scale mode (FIXME-OPT)

            
                    for (ImGui_ImplSDLRenderer3_TexScaleModeEntry& entry : bd->TexScaleModeBackups)

            
                        if (entry.Texture == tex)

            
                        {

            
                            if (entry.ScaleModeBackup == SDL_SCALEMODE_INVALID)

            
                                entry.ScaleModeBackup = tex_scale_mode;

            
                            return;

            
                        }

            
                    ImGui_ImplSDLRenderer3_TexScaleModeEntry entry = { tex, tex_scale_mode };

            
                    bd->TexScaleModeBackups.push_back(entry);

            
                }

            
                else

            
                {

            
                    // Use scale mode that was set in texture by user. If there is an entry, restore it and clear the entry.

            
                    for (ImGui_ImplSDLRenderer3_TexScaleModeEntry& entry : bd->TexScaleModeBackups)

            
                        if (entry.Texture == tex && entry.ScaleModeBackup != SDL_SCALEMODE_INVALID)

            
                        {

            
                            SDL_FlushRenderer(renderer);

            
                            SDL_SetTextureScaleMode(tex, entry.ScaleModeBackup);

            
                            entry.ScaleModeBackup = SDL_SCALEMODE_INVALID;

            
                            return;

            
                        }

            
                }

            
            }


            static void ImGui_ImplSDLRenderer3_TexScaleModeRestoreBackups(SDL_Renderer* renderer)

            
            {

            
                ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();

            
                if (bd->TexScaleModeBackups.Size == 0)

            
                    return;

            
                SDL_FlushRenderer(renderer);

            
                for (ImGui_ImplSDLRenderer3_TexScaleModeEntry& entry : bd->TexScaleModeBackups)

            
                    if (entry.ScaleModeBackup != SDL_SCALEMODE_INVALID)

            
                        SDL_SetTextureScaleMode(entry.Texture, entry.ScaleModeBackup);

            
                bd->TexScaleModeBackups.resize(0);

            
            }


            void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data, SDL_Renderer* renderer)

            
            {

            
                ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();


                // If there's a scale factor set by the user, use that instead

            
                // If the user has specified a scale factor to SDL_Renderer already via SDL_RenderSetScale(), SDL will scale whatever we pass

            
                // to SDL_RenderGeometryRaw() by that scale factor. In that case we don't want to be also scaling it ourselves here.

            
                float rsx = 1.0f;

            
                float rsy = 1.0f;

            
                SDL_GetRenderScale(renderer, &rsx, &rsy);

            
                ImVec2 render_scale;

            
                render_scale.x = (rsx == 1.0f) ? draw_data->FramebufferScale.x : 1.0f;

            
                render_scale.y = (rsy == 1.0f) ? draw_data->FramebufferScale.y : 1.0f;


                // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)

            
                int fb_width = (int)(draw_data->DisplaySize.x * render_scale.x);

            
                int fb_height = (int)(draw_data->DisplaySize.y * render_scale.y);

            
                if (fb_width == 0 || fb_height == 0)

            
                    return;


                // Catch up with texture updates. Most of the times, the list will have 1 element with an OK status, aka nothing to do.

            
                // (This almost always points to ImGui::GetPlatformIO().Textures[] but is part of ImDrawData to allow overriding or disabling texture updates).

            
                if (draw_data->Textures != nullptr)

            
                    for (ImTextureData* tex : *draw_data->Textures)

            
                        if (tex->Status != ImTextureStatus_OK)

            
                            ImGui_ImplSDLRenderer3_UpdateTexture(tex);


                // Backup SDL_Renderer state that will be modified to restore it afterwards

            
                struct BackupSDLRendererState

            
                {

            
                    SDL_Rect    Viewport;

            
                    bool        ViewportEnabled;

            
                    bool        ClipEnabled;

            
                    SDL_Rect    ClipRect;

            
                };

            
                BackupSDLRendererState old = {};

            
                old.ViewportEnabled = SDL_RenderViewportSet(renderer);

            
                old.ClipEnabled = SDL_RenderClipEnabled(renderer);

            
                SDL_GetRenderViewport(renderer, &old.Viewport);

            
                SDL_GetRenderClipRect(renderer, &old.ClipRect);


                // Setup render state structure (for callbacks and custom texture bindings)

            
                ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();

            
                ImGui_ImplSDLRenderer3_RenderState render_state;

            
                render_state.Renderer = renderer;

            
                platform_io.Renderer_RenderState = &render_state;


                // Setup desired state

            
                ImGui_ImplSDLRenderer3_SetupRenderState(renderer);

            
                IM_ASSERT(bd->TexScaleModeBackups.Size == 0);


                // Will project scissor/clipping rectangles into framebuffer space

            
                ImVec2 clip_off = draw_data->DisplayPos;         // (0,0) unless using multi-viewports

            
                ImVec2 clip_scale = render_scale;


                // Render command lists

            
                for (const ImDrawList* draw_list : draw_data->CmdLists)

            
                {

            
                    const ImDrawVert* vtx_buffer = draw_list->VtxBuffer.Data;

            
                    const ImDrawIdx* idx_buffer = draw_list->IdxBuffer.Data;


                    for (int cmd_i = 0; cmd_i < draw_list->CmdBuffer.Size; cmd_i++)

            
                    {

            
                        const ImDrawCmd* pcmd = &draw_list->CmdBuffer[cmd_i];

            
                        if (pcmd->UserCallback)

            
                        {

            
                            // User callback, registered via ImDrawList::AddCallback()

            
                            if (pcmd->UserCallback == ImGui_ImplSDLRenderer3_DrawCallback_ResetRenderState)

            
                                ImGui_ImplSDLRenderer3_SetupRenderState(renderer);

            
                            else

            
                                pcmd->UserCallback(draw_list, pcmd);

            
                        }

            
                        else

            
                        {

            
                            // Project scissor/clipping rectangles into framebuffer space

            
                            ImVec2 clip_min((pcmd->ClipRect.x - clip_off.x) * clip_scale.x, (pcmd->ClipRect.y - clip_off.y) * clip_scale.y);

            
                            ImVec2 clip_max((pcmd->ClipRect.z - clip_off.x) * clip_scale.x, (pcmd->ClipRect.w - clip_off.y) * clip_scale.y);

            
                            if (clip_min.x < 0.0f) { clip_min.x = 0.0f; }

            
                            if (clip_min.y < 0.0f) { clip_min.y = 0.0f; }

            
                            if (clip_max.x > (float)fb_width) { clip_max.x = (float)fb_width; }

            
                            if (clip_max.y > (float)fb_height) { clip_max.y = (float)fb_height; }

            
                            if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)

            
                                continue;

            
                            SDL_Rect r = { (int)(clip_min.x), (int)(clip_min.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y) };

            
                            SDL_SetRenderClipRect(renderer, &r);


                            // Setup texture scale/filtering mode

            
                            SDL_Texture* tex = (SDL_Texture*)pcmd->GetTexID();

            
                            ImGui_ImplSDLRenderer3_TexScaleModeUpdate(renderer, tex, render_state.CurrentScaleMode);


                            // Draw

            
                            const float* xy = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, pos));

            
                            const float* uv = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, uv));

            
                            const SDL_Color* color = (const SDL_Color*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col));

            
                            SDL_RenderGeometryRaw8BitColor(renderer, bd->ColorBuffer, tex,

            
                                xy, (int)sizeof(ImDrawVert),

            
                                color, (int)sizeof(ImDrawVert),

            
                                uv, (int)sizeof(ImDrawVert),

            
                                draw_list->VtxBuffer.Size - pcmd->VtxOffset,

            
                                idx_buffer + pcmd->IdxOffset, pcmd->ElemCount, sizeof(ImDrawIdx));

            
                        }

            
                    }

            
                }

            
                platform_io.Renderer_RenderState = nullptr;


                // Restore modified SDL_Renderer state

            
                SDL_SetRenderViewport(renderer, old.ViewportEnabled ? &old.Viewport : nullptr);

            
                SDL_SetRenderClipRect(renderer, old.ClipEnabled ? &old.ClipRect : nullptr);

            
                ImGui_ImplSDLRenderer3_TexScaleModeRestoreBackups(renderer);

            
            }


            void ImGui_ImplSDLRenderer3_UpdateTexture(ImTextureData* tex)

            
            {

            
                ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();


                if (tex->Status == ImTextureStatus_WantCreate)

            
                {

            
                    // Create and upload new texture to graphics system

            
                    //IMGUI_DEBUG_LOG("UpdateTexture #%03d: WantCreate %dx%d\n", tex->UniqueID, tex->Width, tex->Height);

            
                    IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == nullptr);

            
                    IM_ASSERT(tex->Format == ImTextureFormat_RGBA32);


                    // Create texture (bilinear sampling is required)

            
                    SDL_Texture* sdl_texture = SDL_CreateTexture(bd->Renderer, SDL_PIXELFORMAT_RGBA32, SDL_TEXTUREACCESS_STATIC, tex->Width, tex->Height);

            
                    IM_ASSERT(sdl_texture != nullptr && "Backend failed to create texture!");

            
                    SDL_UpdateTexture(sdl_texture, nullptr, tex->GetPixels(), tex->GetPitch());

            
                    SDL_SetTextureBlendMode(sdl_texture, SDL_BLENDMODE_BLEND);

            
                    SDL_SetTextureScaleMode(sdl_texture, SDL_SCALEMODE_LINEAR);


                    // Store identifiers

            
                    tex->SetTexID((ImTextureID)(intptr_t)sdl_texture);

            
                    tex->SetStatus(ImTextureStatus_OK);

            
                }

            
                else if (tex->Status == ImTextureStatus_WantUpdates)

            
                {

            
                    // Update selected blocks. We only ever write to textures regions which have never been used before!

            
                    // This backend choose to use tex->Updates[] but you can use tex->UpdateRect to upload a single region.

            
                    SDL_Texture* sdl_texture = (SDL_Texture*)(intptr_t)tex->TexID;

            
                    for (ImTextureRect& r : tex->Updates)

            
                    {

            
                        SDL_Rect sdl_r = { r.x, r.y, r.w, r.h };

            
                        SDL_UpdateTexture(sdl_texture, &sdl_r, tex->GetPixelsAt(r.x, r.y), tex->GetPitch());

            
                    }

            
                    tex->SetStatus(ImTextureStatus_OK);

            
                }

            
                else if (tex->Status == ImTextureStatus_WantDestroy)

            
                {

            
                    if (tex->TexID != ImTextureID_Invalid)

            
                        if (SDL_Texture* sdl_texture = (SDL_Texture*)(intptr_t)tex->TexID)

            
                            SDL_DestroyTexture(sdl_texture);


                    // Clear identifiers and mark as destroyed (in order to allow e.g. calling InvalidateDeviceObjects while running)

            
                    tex->SetTexID(ImTextureID_Invalid);

            
                    tex->SetStatus(ImTextureStatus_Destroyed);

            
                }

            
            }


            void ImGui_ImplSDLRenderer3_CreateDeviceObjects()

            
            {

            
            }


            void ImGui_ImplSDLRenderer3_DestroyDeviceObjects()

            
            {

            
                // Destroy all textures

            
                for (ImTextureData* tex : ImGui::GetPlatformIO().Textures)

            
                    if (tex->RefCount == 1)

            
                    {

            
                        tex->SetStatus(ImTextureStatus_WantDestroy);

            
                        ImGui_ImplSDLRenderer3_UpdateTexture(tex);

            
                    }

            
            }


            bool ImGui_ImplSDLRenderer3_Init(SDL_Renderer* renderer)

            
            {

            
                ImGuiIO& io = ImGui::GetIO();

            
                IMGUI_CHECKVERSION();

            
                IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");

            
                IM_ASSERT(renderer != nullptr && "SDL_Renderer not initialized!");


                // Setup backend capabilities flags

            
                ImGui_ImplSDLRenderer3_Data* bd = IM_NEW(ImGui_ImplSDLRenderer3_Data)();

            
                io.BackendRendererUserData = (void*)bd;

            
                io.BackendRendererName = "imgui_impl_sdlrenderer3";

            
                io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.

            
                io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.


                ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();

            
                platform_io.DrawCallback_ResetRenderState = ImGui_ImplSDLRenderer3_DrawCallback_ResetRenderState;

            
                platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerLinear;

            
                platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerNearest;

            
                platform_io.DrawCallback_SetSamplerFromTex = ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerFromTex;


                bd->Renderer = renderer;


                return true;

            
            }


            void ImGui_ImplSDLRenderer3_Shutdown()

            
            {

            
                ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();

            
                IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");

            
                ImGuiIO& io = ImGui::GetIO();

            
                ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();


                ImGui_ImplSDLRenderer3_DestroyDeviceObjects();


                io.BackendRendererName = nullptr;

            
                io.BackendRendererUserData = nullptr;

            
                io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);

            
                platform_io.ClearRendererHandlers();

            
                IM_DELETE(bd);

            
            }


            //-----------------------------------------------------------------------------


            #if defined(__clang__)

            
            #pragma clang diagnostic pop

            
            #endif


            #endif // #ifndef IMGUI_DISABLE
	// dear imgui: Renderer Backend for SDL_Renderer for SDL3
	// (Requires: SDL 3.1.8+)

	// Note that SDL_Renderer is an _optional_ component of SDL3, which IMHO is now largely obsolete.
	// For a multi-platform app consider using other technologies:
	// - SDL3+SDL_GPU: SDL_GPU is SDL3 new graphics abstraction API.
	// - SDL3+DirectX, SDL3+OpenGL, SDL3+Vulkan: combine SDL with dedicated renderers.
	// If your application wants to render any non trivial amount of graphics other than UI,
	// please be aware that SDL_Renderer currently offers a limited graphic API to the end-user
	// and it might be difficult to step out of those boundaries.

	// Implemented features:
	// [X] Renderer: User texture binding. Use 'SDL_Texture*' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
	// [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
	// [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
	// [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplSDLRenderer3_GetRenderState().

	// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
	// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
	// Learn about Dear ImGui:
	// - FAQ https://dearimgui.com/faq
	// - Getting Started https://dearimgui.com/getting-started
	// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
	// - Introduction, links and more at the top of imgui.cpp

	// CHANGELOG
	// (minor and older changes stripped away, please see git history for details)
	// 2026-09-17: Restore modified texture scale modes at the end of RenderDrawData(). Added DrawCallback_SetSamplerFromTex support. Added CurrentScaleMode in ImGui_ImplSDLRenderer3_RenderState (#9543, #9378)
	// 2026-07-15: Fixed default sampler state to be linear (broken 2026-04-23). (#9470, #9378)
	// 2026-04-23: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState, DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest. (#9378)
	// 2026-03-12: Fixed invalid assert in ImGui_ImplSDLRenderer3_UpdateTexture() if ImTextureID_Invalid is defined to be != 0, which became the default since 2026-03-12. (#9295)
	// 2025-09-18: Call platform_io.ClearRendererHandlers() on shutdown.
	// 2025-06-11: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas. Removed ImGui_ImplSDLRenderer3_CreateFontsTexture() and ImGui_ImplSDLRenderer3_DestroyFontsTexture().
	// 2025-01-18: Use endian-dependent RGBA32 texture format, to match SDL_Color.
	// 2024-10-09: Expose selected render state in ImGui_ImplSDLRenderer3_RenderState, which you can access in 'void* platform_io.Renderer_RenderState' during draw callbacks.
	// 2024-07-01: Update for SDL3 api changes: SDL_RenderGeometryRaw() uint32 version was removed (SDL#9009).
	// 2024-05-14: BREAKING CHANGE ImGui_ImplSDLRenderer3_RenderDrawData() requires SDL_Renderer* passed as parameter.
	// 2024-02-12: Amend to query SDL_RenderViewportSet() and restore viewport accordingly.
	// 2023-05-30: Initial version.

	#include "imgui.h"
	#ifndef IMGUI_DISABLE
	#include "imgui_impl_sdlrenderer3.h"
	#include <stdint.h> // intptr_t

	// Clang warnings with -Weverything
	#if defined(__clang__)
	#pragma clang diagnostic push
	#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness
	#elif defined(__GNUC__)
	#pragma GCC diagnostic ignored "-Wfloat-equal" // warning: comparing floating-point with '==' or '!=' is unsafe
	#endif

	// SDL
	#include <SDL3/SDL_render.h>
	#include <SDL3/SDL_version.h>
	#if !SDL_VERSION_ATLEAST(3,0,0)
	#error This backend requires SDL 3.0.0+
	#endif

	// SDL_Renderer data
	struct ImGui_ImplSDLRenderer3_TexScaleModeEntry
	{
	SDL_Texture* Texture;
	SDL_ScaleMode ScaleModeBackup;
	};

	struct ImGui_ImplSDLRenderer3_Data
	{
	SDL_Renderer* Renderer; // Main viewport's renderer
	ImVector<SDL_FColor> ColorBuffer;
	ImVector<ImGui_ImplSDLRenderer3_TexScaleModeEntry> TexScaleModeBackups; // Backup of texture scale modes

	ImGui_ImplSDLRenderer3_Data() { memset((void)this, 0, sizeof(this)); }
	};

	// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
	// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
	static ImGui_ImplSDLRenderer3_Data* ImGui_ImplSDLRenderer3_GetBackendData()
	{
	return ImGui::GetCurrentContext() ? (ImGui_ImplSDLRenderer3_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
	}

	ImGui_ImplSDLRenderer3_RenderState* ImGui_ImplSDLRenderer3_GetRenderState()
	{
	return (ImGui_ImplSDLRenderer3_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
	}

	// Functions
	static void ImGui_ImplSDLRenderer3_SetupRenderState(SDL_Renderer* renderer)
	{
	ImGui_ImplSDLRenderer3_RenderState* render_state = ImGui_ImplSDLRenderer3_GetRenderState();

	// Clear out any viewports and cliprect set by the user
	// FIXME: Technically speaking there are lots of other things we could backup/setup/restore during our render process.
	SDL_SetRenderViewport(renderer, nullptr);
	SDL_SetRenderClipRect(renderer, nullptr);
	render_state->CurrentScaleMode = SDL_SCALEMODE_LINEAR;
	}

	void ImGui_ImplSDLRenderer3_NewFrame()
	{
	ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
	IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDLRenderer3_Init()?");
	IM_UNUSED(bd);
	}

	// https://github.com/libsdl-org/SDL/issues/9009
	static int SDL_RenderGeometryRaw8BitColor(SDL_Renderer* renderer, ImVector<SDL_FColor>& colors_out, SDL_Texture* texture, const float* xy, int xy_stride, const SDL_Color* color, int color_stride, const float* uv, int uv_stride, int num_vertices, const void* indices, int num_indices, int size_indices)
	{
	const Uint8* color2 = (const Uint8*)color;
	colors_out.resize(num_vertices);
	SDL_FColor* color3 = colors_out.Data;
	for (int i = 0; i < num_vertices; i++)
	{
	color3[i].r = color->r / 255.0f;
	color3[i].g = color->g / 255.0f;
	color3[i].b = color->b / 255.0f;
	color3[i].a = color->a / 255.0f;
	color2 += color_stride;
	color = (const SDL_Color*)color2;
	}
	return SDL_RenderGeometryRaw(renderer, texture, xy, xy_stride, color3, sizeof(*color3), uv, uv_stride, num_vertices, indices, num_indices, size_indices);
	}

	// Draw callbacks
	static void ImGui_ImplSDLRenderer3_DrawCallback_ResetRenderState(const ImDrawList, const ImDrawCmd) {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
	static void ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerLinear(const ImDrawList, const ImDrawCmd) { ImGui_ImplSDLRenderer3_RenderState* render_state = ImGui_ImplSDLRenderer3_GetRenderState(); render_state->CurrentScaleMode = SDL_SCALEMODE_LINEAR; }
	static void ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerNearest(const ImDrawList, const ImDrawCmd) { ImGui_ImplSDLRenderer3_RenderState* render_state = ImGui_ImplSDLRenderer3_GetRenderState(); render_state->CurrentScaleMode = SDL_SCALEMODE_NEAREST; }
	static void ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerFromTex(const ImDrawList, const ImDrawCmd) { ImGui_ImplSDLRenderer3_RenderState* render_state = ImGui_ImplSDLRenderer3_GetRenderState(); render_state->CurrentScaleMode = SDL_SCALEMODE_INVALID; } // SDL_SCALEMODE_INVALID = use/keep value in texture.

	// SDLRenderer has various design issues which makes it hard to do it compared to regular graphics API.
	// - scale/filtering mode is tied to a texture.
	// - scale/filtering mode is not queued as part of the SDL_RenderGeometryXXX commands, so a change in one texture requires a flush.
	static void ImGui_ImplSDLRenderer3_TexScaleModeUpdate(SDL_Renderer* renderer, SDL_Texture* tex, SDL_ScaleMode desired_scale_mode)
	{
	ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
	if (desired_scale_mode != SDL_SCALEMODE_INVALID)
	{
	// Enforce a scale mode
	SDL_ScaleMode tex_scale_mode = desired_scale_mode;
	if (!SDL_GetTextureScaleMode(tex, &tex_scale_mode) \|\| tex_scale_mode == desired_scale_mode)
	return;
	SDL_FlushRenderer(renderer);
	SDL_SetTextureScaleMode(tex, desired_scale_mode);

	// Store backup of old scale mode (FIXME-OPT)
	for (ImGui_ImplSDLRenderer3_TexScaleModeEntry& entry : bd->TexScaleModeBackups)
	if (entry.Texture == tex)
	{
	if (entry.ScaleModeBackup == SDL_SCALEMODE_INVALID)
	entry.ScaleModeBackup = tex_scale_mode;
	return;
	}
	ImGui_ImplSDLRenderer3_TexScaleModeEntry entry = { tex, tex_scale_mode };
	bd->TexScaleModeBackups.push_back(entry);
	}
	else
	{
	// Use scale mode that was set in texture by user. If there is an entry, restore it and clear the entry.
	for (ImGui_ImplSDLRenderer3_TexScaleModeEntry& entry : bd->TexScaleModeBackups)
	if (entry.Texture == tex && entry.ScaleModeBackup != SDL_SCALEMODE_INVALID)
	{
	SDL_FlushRenderer(renderer);
	SDL_SetTextureScaleMode(tex, entry.ScaleModeBackup);
	entry.ScaleModeBackup = SDL_SCALEMODE_INVALID;
	return;
	}
	}
	}

	static void ImGui_ImplSDLRenderer3_TexScaleModeRestoreBackups(SDL_Renderer* renderer)
	{
	ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
	if (bd->TexScaleModeBackups.Size == 0)
	return;
	SDL_FlushRenderer(renderer);
	for (ImGui_ImplSDLRenderer3_TexScaleModeEntry& entry : bd->TexScaleModeBackups)
	if (entry.ScaleModeBackup != SDL_SCALEMODE_INVALID)
	SDL_SetTextureScaleMode(entry.Texture, entry.ScaleModeBackup);
	bd->TexScaleModeBackups.resize(0);
	}

	void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data, SDL_Renderer* renderer)
	{
	ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();

	// If there's a scale factor set by the user, use that instead
	// If the user has specified a scale factor to SDL_Renderer already via SDL_RenderSetScale(), SDL will scale whatever we pass
	// to SDL_RenderGeometryRaw() by that scale factor. In that case we don't want to be also scaling it ourselves here.
	float rsx = 1.0f;
	float rsy = 1.0f;
	SDL_GetRenderScale(renderer, &rsx, &rsy);
	ImVec2 render_scale;
	render_scale.x = (rsx == 1.0f) ? draw_data->FramebufferScale.x : 1.0f;
	render_scale.y = (rsy == 1.0f) ? draw_data->FramebufferScale.y : 1.0f;

	// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
	int fb_width = (int)(draw_data->DisplaySize.x * render_scale.x);
	int fb_height = (int)(draw_data->DisplaySize.y * render_scale.y);
	if (fb_width == 0 \|\| fb_height == 0)
	return;

	// Catch up with texture updates. Most of the times, the list will have 1 element with an OK status, aka nothing to do.
	// (This almost always points to ImGui::GetPlatformIO().Textures[] but is part of ImDrawData to allow overriding or disabling texture updates).
	if (draw_data->Textures != nullptr)
	for (ImTextureData* tex : *draw_data->Textures)
	if (tex->Status != ImTextureStatus_OK)
	ImGui_ImplSDLRenderer3_UpdateTexture(tex);

	// Backup SDL_Renderer state that will be modified to restore it afterwards
	struct BackupSDLRendererState
	{
	SDL_Rect Viewport;
	bool ViewportEnabled;
	bool ClipEnabled;
	SDL_Rect ClipRect;
	};
	BackupSDLRendererState old = {};
	old.ViewportEnabled = SDL_RenderViewportSet(renderer);
	old.ClipEnabled = SDL_RenderClipEnabled(renderer);
	SDL_GetRenderViewport(renderer, &old.Viewport);
	SDL_GetRenderClipRect(renderer, &old.ClipRect);

	// Setup render state structure (for callbacks and custom texture bindings)
	ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
	ImGui_ImplSDLRenderer3_RenderState render_state;
	render_state.Renderer = renderer;
	platform_io.Renderer_RenderState = &render_state;

	// Setup desired state
	ImGui_ImplSDLRenderer3_SetupRenderState(renderer);
	IM_ASSERT(bd->TexScaleModeBackups.Size == 0);

	// Will project scissor/clipping rectangles into framebuffer space
	ImVec2 clip_off = draw_data->DisplayPos; // (0,0) unless using multi-viewports
	ImVec2 clip_scale = render_scale;

	// Render command lists
	for (const ImDrawList* draw_list : draw_data->CmdLists)
	{
	const ImDrawVert* vtx_buffer = draw_list->VtxBuffer.Data;
	const ImDrawIdx* idx_buffer = draw_list->IdxBuffer.Data;

	for (int cmd_i = 0; cmd_i < draw_list->CmdBuffer.Size; cmd_i++)
	{
	const ImDrawCmd* pcmd = &draw_list->CmdBuffer[cmd_i];
	if (pcmd->UserCallback)
	{
	// User callback, registered via ImDrawList::AddCallback()
	if (pcmd->UserCallback == ImGui_ImplSDLRenderer3_DrawCallback_ResetRenderState)
	ImGui_ImplSDLRenderer3_SetupRenderState(renderer);
	else
	pcmd->UserCallback(draw_list, pcmd);
	}
	else
	{
	// Project scissor/clipping rectangles into framebuffer space
	ImVec2 clip_min((pcmd->ClipRect.x - clip_off.x) * clip_scale.x, (pcmd->ClipRect.y - clip_off.y) * clip_scale.y);
	ImVec2 clip_max((pcmd->ClipRect.z - clip_off.x) * clip_scale.x, (pcmd->ClipRect.w - clip_off.y) * clip_scale.y);
	if (clip_min.x < 0.0f) { clip_min.x = 0.0f; }
	if (clip_min.y < 0.0f) { clip_min.y = 0.0f; }
	if (clip_max.x > (float)fb_width) { clip_max.x = (float)fb_width; }
	if (clip_max.y > (float)fb_height) { clip_max.y = (float)fb_height; }
	if (clip_max.x <= clip_min.x \|\| clip_max.y <= clip_min.y)
	continue;
	SDL_Rect r = { (int)(clip_min.x), (int)(clip_min.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y) };
	SDL_SetRenderClipRect(renderer, &r);

	// Setup texture scale/filtering mode
	SDL_Texture* tex = (SDL_Texture*)pcmd->GetTexID();
	ImGui_ImplSDLRenderer3_TexScaleModeUpdate(renderer, tex, render_state.CurrentScaleMode);

	// Draw
	const float* xy = (const float)(const void)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, pos));
	const float* uv = (const float)(const void)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, uv));
	const SDL_Color* color = (const SDL_Color)(const void)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col));
	SDL_RenderGeometryRaw8BitColor(renderer, bd->ColorBuffer, tex,
	xy, (int)sizeof(ImDrawVert),
	color, (int)sizeof(ImDrawVert),
	uv, (int)sizeof(ImDrawVert),
	draw_list->VtxBuffer.Size - pcmd->VtxOffset,
	idx_buffer + pcmd->IdxOffset, pcmd->ElemCount, sizeof(ImDrawIdx));
	}
	}
	}
	platform_io.Renderer_RenderState = nullptr;

	// Restore modified SDL_Renderer state
	SDL_SetRenderViewport(renderer, old.ViewportEnabled ? &old.Viewport : nullptr);
	SDL_SetRenderClipRect(renderer, old.ClipEnabled ? &old.ClipRect : nullptr);
	ImGui_ImplSDLRenderer3_TexScaleModeRestoreBackups(renderer);
	}

	void ImGui_ImplSDLRenderer3_UpdateTexture(ImTextureData* tex)
	{
	ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();

	if (tex->Status == ImTextureStatus_WantCreate)
	{
	// Create and upload new texture to graphics system
	//IMGUI_DEBUG_LOG("UpdateTexture #%03d: WantCreate %dx%d\n", tex->UniqueID, tex->Width, tex->Height);
	IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == nullptr);
	IM_ASSERT(tex->Format == ImTextureFormat_RGBA32);

	// Create texture (bilinear sampling is required)
	SDL_Texture* sdl_texture = SDL_CreateTexture(bd->Renderer, SDL_PIXELFORMAT_RGBA32, SDL_TEXTUREACCESS_STATIC, tex->Width, tex->Height);
	IM_ASSERT(sdl_texture != nullptr && "Backend failed to create texture!");
	SDL_UpdateTexture(sdl_texture, nullptr, tex->GetPixels(), tex->GetPitch());
	SDL_SetTextureBlendMode(sdl_texture, SDL_BLENDMODE_BLEND);
	SDL_SetTextureScaleMode(sdl_texture, SDL_SCALEMODE_LINEAR);

	// Store identifiers
	tex->SetTexID((ImTextureID)(intptr_t)sdl_texture);
	tex->SetStatus(ImTextureStatus_OK);
	}
	else if (tex->Status == ImTextureStatus_WantUpdates)
	{
	// Update selected blocks. We only ever write to textures regions which have never been used before!
	// This backend choose to use tex->Updates[] but you can use tex->UpdateRect to upload a single region.
	SDL_Texture* sdl_texture = (SDL_Texture*)(intptr_t)tex->TexID;
	for (ImTextureRect& r : tex->Updates)
	{
	SDL_Rect sdl_r = { r.x, r.y, r.w, r.h };
	SDL_UpdateTexture(sdl_texture, &sdl_r, tex->GetPixelsAt(r.x, r.y), tex->GetPitch());
	}
	tex->SetStatus(ImTextureStatus_OK);
	}
	else if (tex->Status == ImTextureStatus_WantDestroy)
	{
	if (tex->TexID != ImTextureID_Invalid)
	if (SDL_Texture* sdl_texture = (SDL_Texture*)(intptr_t)tex->TexID)
	SDL_DestroyTexture(sdl_texture);

	// Clear identifiers and mark as destroyed (in order to allow e.g. calling InvalidateDeviceObjects while running)
	tex->SetTexID(ImTextureID_Invalid);
	tex->SetStatus(ImTextureStatus_Destroyed);
	}
	}

	void ImGui_ImplSDLRenderer3_CreateDeviceObjects()
	{
	}

	void ImGui_ImplSDLRenderer3_DestroyDeviceObjects()
	{
	// Destroy all textures
	for (ImTextureData* tex : ImGui::GetPlatformIO().Textures)
	if (tex->RefCount == 1)
	{
	tex->SetStatus(ImTextureStatus_WantDestroy);
	ImGui_ImplSDLRenderer3_UpdateTexture(tex);
	}
	}

	bool ImGui_ImplSDLRenderer3_Init(SDL_Renderer* renderer)
	{
	ImGuiIO& io = ImGui::GetIO();
	IMGUI_CHECKVERSION();
	IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
	IM_ASSERT(renderer != nullptr && "SDL_Renderer not initialized!");

	// Setup backend capabilities flags
	ImGui_ImplSDLRenderer3_Data* bd = IM_NEW(ImGui_ImplSDLRenderer3_Data)();
	io.BackendRendererUserData = (void*)bd;
	io.BackendRendererName = "imgui_impl_sdlrenderer3";
	io.BackendFlags \|= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
	io.BackendFlags \|= ImGuiBackendFlags_RendererHasTextures; // We can honor ImGuiPlatformIO::Textures[] requests during render.

	ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
	platform_io.DrawCallback_ResetRenderState = ImGui_ImplSDLRenderer3_DrawCallback_ResetRenderState;
	platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerLinear;
	platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerNearest;
	platform_io.DrawCallback_SetSamplerFromTex = ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerFromTex;

	bd->Renderer = renderer;

	return true;
	}

	void ImGui_ImplSDLRenderer3_Shutdown()
	{
	ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
	IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
	ImGuiIO& io = ImGui::GetIO();
	ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();

	ImGui_ImplSDLRenderer3_DestroyDeviceObjects();

	io.BackendRendererName = nullptr;
	io.BackendRendererUserData = nullptr;
	io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset \| ImGuiBackendFlags_RendererHasTextures);
	platform_io.ClearRendererHandlers();
	IM_DELETE(bd);
	}

	//-----------------------------------------------------------------------------

	#if defined(__clang__)
	#pragma clang diagnostic pop
	#endif

	#endif // #ifndef IMGUI_DISABLE