Migrate to imgui 1.92.6 and SDL3HEADmaster

1 files changed, 0 insertions, 264 deletions

diff --git a/lib/imgui-1.90.7/backends/imgui_impl_sdlrenderer2.cpp b/lib/imgui-1.90.7/backends/imgui_impl_sdlrenderer2.cpp
deleted file mode 100644
index 3d538df..0000000
--- a/lib/imgui-1.90.7/backends/imgui_impl_sdlrenderer2.cpp
+++ /dev/null
@@ -1,264 +0,0 @@
-// dear imgui: Renderer Backend for SDL_Renderer for SDL2
-// (Requires: SDL 2.0.17+)
-
-// Note how SDL_Renderer is an _optional_ component of SDL2.
-// For a multi-platform app consider using e.g. SDL+DirectX on Windows and SDL+OpenGL on Linux/OSX.
-// If your application will want 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 ImTextureID. Read the FAQ about ImTextureID!
-//  [X] Renderer: Large meshes support (64k+ vertices) with 16-bit indices.
-
-// You can copy and 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
-//  2024-05-14: *BREAKING CHANGE* ImGui_ImplSDLRenderer3_RenderDrawData() requires SDL_Renderer* passed as parameter.
-//  2023-05-30: Renamed imgui_impl_sdlrenderer.h/.cpp to imgui_impl_sdlrenderer2.h/.cpp to accommodate for upcoming SDL3.
-//  2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
-//  2021-12-21: Update SDL_RenderGeometryRaw() format to work with SDL 2.0.19.
-//  2021-12-03: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
-//  2021-10-06: Backup and restore modified ClipRect/Viewport.
-//  2021-09-21: Initial version.
-
-#include "imgui.h"
-#ifndef IMGUI_DISABLE
-#include "imgui_impl_sdlrenderer2.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
-#endif
-
-// SDL
-#include <SDL.h>
-#if !SDL_VERSION_ATLEAST(2,0,17)
-#error This backend requires SDL 2.0.17+ because of SDL_RenderGeometry() function
-#endif
-
-// SDL_Renderer data
-struct ImGui_ImplSDLRenderer2_Data
-{
-    SDL_Renderer*   Renderer;       // Main viewport's renderer
-    SDL_Texture*    FontTexture;
-    ImGui_ImplSDLRenderer2_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_ImplSDLRenderer2_Data* ImGui_ImplSDLRenderer2_GetBackendData()
-{
-    return ImGui::GetCurrentContext() ? (ImGui_ImplSDLRenderer2_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
-}
-
-// Functions
-bool ImGui_ImplSDLRenderer2_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_ImplSDLRenderer2_Data* bd = IM_NEW(ImGui_ImplSDLRenderer2_Data)();
-    io.BackendRendererUserData = (void*)bd;
-    io.BackendRendererName = "imgui_impl_sdlrenderer2";
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
-
-    bd->Renderer = renderer;
-
-    return true;
-}
-
-void ImGui_ImplSDLRenderer2_Shutdown()
-{
-    ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
-    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
-    ImGuiIO& io = ImGui::GetIO();
-
-    ImGui_ImplSDLRenderer2_DestroyDeviceObjects();
-
-    io.BackendRendererName = nullptr;
-    io.BackendRendererUserData = nullptr;
-    io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;
-    IM_DELETE(bd);
-}
-
-static void ImGui_ImplSDLRenderer2_SetupRenderState(SDL_Renderer* renderer)
-{
-	// 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_RenderSetViewport(renderer, nullptr);
-	SDL_RenderSetClipRect(renderer, nullptr);
-}
-
-void ImGui_ImplSDLRenderer2_NewFrame()
-{
-    ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDLRenderer2_Init()?");
-
-    if (!bd->FontTexture)
-        ImGui_ImplSDLRenderer2_CreateDeviceObjects();
-}
-
-void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data, SDL_Renderer* renderer)
-{
-	// 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_RenderGetScale(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;
-
-    // Backup SDL_Renderer state that will be modified to restore it afterwards
-    struct BackupSDLRendererState
-    {
-        SDL_Rect    Viewport;
-        bool        ClipEnabled;
-        SDL_Rect    ClipRect;
-    };
-    BackupSDLRendererState old = {};
-    old.ClipEnabled = SDL_RenderIsClipEnabled(renderer) == SDL_TRUE;
-    SDL_RenderGetViewport(renderer, &old.Viewport);
-    SDL_RenderGetClipRect(renderer, &old.ClipRect);
-
-	// 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
-    ImGui_ImplSDLRenderer2_SetupRenderState(renderer);
-    for (int n = 0; n < draw_data->CmdListsCount; n++)
-    {
-        const ImDrawList* cmd_list = draw_data->CmdLists[n];
-        const ImDrawVert* vtx_buffer = cmd_list->VtxBuffer.Data;
-        const ImDrawIdx* idx_buffer = cmd_list->IdxBuffer.Data;
-
-        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
-        {
-            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
-            if (pcmd->UserCallback)
-            {
-                // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
-                    ImGui_ImplSDLRenderer2_SetupRenderState(renderer);
-                else
-                    pcmd->UserCallback(cmd_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_RenderSetClipRect(renderer, &r);
-
-                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));
-#if SDL_VERSION_ATLEAST(2,0,19)
-                const SDL_Color* color = (const SDL_Color*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col)); // SDL 2.0.19+
-#else
-                const int* color = (const int*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col)); // SDL 2.0.17 and 2.0.18
-#endif
-
-                // Bind texture, Draw
-				SDL_Texture* tex = (SDL_Texture*)pcmd->GetTexID();
-                SDL_RenderGeometryRaw(renderer, tex,
-                    xy, (int)sizeof(ImDrawVert),
-                    color, (int)sizeof(ImDrawVert),
-                    uv, (int)sizeof(ImDrawVert),
-                    cmd_list->VtxBuffer.Size - pcmd->VtxOffset,
-                    idx_buffer + pcmd->IdxOffset, pcmd->ElemCount, sizeof(ImDrawIdx));
-            }
-        }
-    }
-
-    // Restore modified SDL_Renderer state
-    SDL_RenderSetViewport(renderer, &old.Viewport);
-    SDL_RenderSetClipRect(renderer, old.ClipEnabled ? &old.ClipRect : nullptr);
-}
-
-// Called by Init/NewFrame/Shutdown
-bool ImGui_ImplSDLRenderer2_CreateFontsTexture()
-{
-    ImGuiIO& io = ImGui::GetIO();
-    ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
-
-    // Build texture atlas
-    unsigned char* pixels;
-    int width, height;
-    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);   // Load as RGBA 32-bit (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
-
-    // Upload texture to graphics system
-    // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
-    bd->FontTexture = SDL_CreateTexture(bd->Renderer, SDL_PIXELFORMAT_ABGR8888, SDL_TEXTUREACCESS_STATIC, width, height);
-    if (bd->FontTexture == nullptr)
-    {
-        SDL_Log("error creating texture");
-        return false;
-    }
-    SDL_UpdateTexture(bd->FontTexture, nullptr, pixels, 4 * width);
-    SDL_SetTextureBlendMode(bd->FontTexture, SDL_BLENDMODE_BLEND);
-    SDL_SetTextureScaleMode(bd->FontTexture, SDL_ScaleModeLinear);
-
-    // Store our identifier
-    io.Fonts->SetTexID((ImTextureID)(intptr_t)bd->FontTexture);
-
-    return true;
-}
-
-void ImGui_ImplSDLRenderer2_DestroyFontsTexture()
-{
-    ImGuiIO& io = ImGui::GetIO();
-    ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
-    if (bd->FontTexture)
-    {
-        io.Fonts->SetTexID(0);
-        SDL_DestroyTexture(bd->FontTexture);
-        bd->FontTexture = nullptr;
-    }
-}
-
-bool ImGui_ImplSDLRenderer2_CreateDeviceObjects()
-{
-    return ImGui_ImplSDLRenderer2_CreateFontsTexture();
-}
-
-void ImGui_ImplSDLRenderer2_DestroyDeviceObjects()
-{
-    ImGui_ImplSDLRenderer2_DestroyFontsTexture();
-}
-
-//-----------------------------------------------------------------------------
-
-#if defined(__clang__)
-#pragma clang diagnostic pop
-#endif
-
-#endif // #ifndef IMGUI_DISABLE