refactor 2

1 files changed, 0 insertions, 346 deletions

diff --git a/imgui-1.92.1/backends/imgui_impl_opengl2.cpp b/imgui-1.92.1/backends/imgui_impl_opengl2.cpp
deleted file mode 100644
index afcafe8..0000000
--- a/imgui-1.92.1/backends/imgui_impl_opengl2.cpp
+++ /dev/null
@@ -1,346 +0,0 @@
-// dear imgui: Renderer Backend for OpenGL2 (legacy OpenGL, fixed pipeline)
-// This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
-
-// Implemented features:
-//  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
-//  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
-// Missing features or Issues:
-//  [ ] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
-
-// 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
-
-// **DO NOT USE THIS CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
-// **Prefer using the code in imgui_impl_opengl3.cpp**
-// This code is mostly provided as a reference to learn how ImGui integration works, because it is shorter to read.
-// If your code is using GL3+ context or any semi modern OpenGL calls, using this is likely to make everything more
-// complicated, will require your code to reset every single OpenGL attributes to their initial state, and might
-// confuse your GPU driver.
-// The GL2 code is unable to reset attributes or even call e.g. "glUseProgram(0)" because they don't exist in that API.
-
-// CHANGELOG
-// (minor and older changes stripped away, please see git history for details)
-//  2025-06-11: OpenGL: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas. Removed ImGui_ImplOpenGL2_CreateFontsTexture() and ImGui_ImplOpenGL2_DestroyFontsTexture().
-//  2024-10-07: OpenGL: Changed default texture sampler to Clamp instead of Repeat/Wrap.
-//  2024-06-28: OpenGL: ImGui_ImplOpenGL2_NewFrame() recreates font texture if it has been destroyed by ImGui_ImplOpenGL2_DestroyFontsTexture(). (#7748)
-//  2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
-//  2021-12-08: OpenGL: Fixed mishandling of the ImDrawCmd::IdxOffset field! This is an old bug but it never had an effect until some internal rendering changes in 1.86.
-//  2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
-//  2021-05-19: OpenGL: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement)
-//  2021-01-03: OpenGL: Backup, setup and restore GL_SHADE_MODEL state, disable GL_STENCIL_TEST and disable GL_NORMAL_ARRAY client state to increase compatibility with legacy OpenGL applications.
-//  2020-01-23: OpenGL: Backup, setup and restore GL_TEXTURE_ENV to increase compatibility with legacy OpenGL applications.
-//  2019-04-30: OpenGL: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
-//  2019-02-11: OpenGL: Projecting clipping rectangles correctly using draw_data->FramebufferScale to allow multi-viewports for retina display.
-//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
-//  2018-08-03: OpenGL: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications.
-//  2018-06-08: Misc: Extracted imgui_impl_opengl2.cpp/.h away from the old combined GLFW/SDL+OpenGL2 examples.
-//  2018-06-08: OpenGL: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
-//  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplOpenGL2_RenderDrawData() in the .h file so you can call it yourself.
-//  2017-09-01: OpenGL: Save and restore current polygon mode.
-//  2016-09-10: OpenGL: Uploading font texture as RGBA32 to increase compatibility with users shaders (not ideal).
-//  2016-09-05: OpenGL: Fixed save and restore of current scissor rectangle.
-
-#include "imgui.h"
-#ifndef IMGUI_DISABLE
-#include "imgui_impl_opengl2.h"
-#include <stdint.h>     // intptr_t
-
-// Clang/GCC warnings with -Weverything
-#if defined(__clang__)
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wunused-macros"                      // warning: macro is not used
-#pragma clang diagnostic ignored "-Wnonportable-system-include-path"
-#endif
-
-// Include OpenGL header (without an OpenGL loader) requires a bit of fiddling
-#if defined(_WIN32) && !defined(APIENTRY)
-#define APIENTRY __stdcall                  // It is customary to use APIENTRY for OpenGL function pointer declarations on all platforms.  Additionally, the Windows OpenGL header needs APIENTRY.
-#endif
-#if defined(_WIN32) && !defined(WINGDIAPI)
-#define WINGDIAPI __declspec(dllimport)     // Some Windows OpenGL headers need this
-#endif
-#if defined(__APPLE__)
-#define GL_SILENCE_DEPRECATION
-#include <OpenGL/gl.h>
-#else
-#include <GL/gl.h>
-#endif
-
-// [Debugging]
-//#define IMGUI_IMPL_OPENGL_DEBUG
-#ifdef IMGUI_IMPL_OPENGL_DEBUG
-#include <stdio.h>
-#define GL_CALL(_CALL)      do { _CALL; GLenum gl_err = glGetError(); if (gl_err != 0) fprintf(stderr, "GL error 0x%x returned from '%s'.\n", gl_err, #_CALL); } while (0)  // Call with error check
-#else
-#define GL_CALL(_CALL)      _CALL   // Call without error check
-#endif
-
-// OpenGL data
-struct ImGui_ImplOpenGL2_Data
-{
-    ImGui_ImplOpenGL2_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_ImplOpenGL2_Data* ImGui_ImplOpenGL2_GetBackendData()
-{
-    return ImGui::GetCurrentContext() ? (ImGui_ImplOpenGL2_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
-}
-
-// Functions
-bool    ImGui_ImplOpenGL2_Init()
-{
-    ImGuiIO& io = ImGui::GetIO();
-    IMGUI_CHECKVERSION();
-    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
-
-    // Setup backend capabilities flags
-    ImGui_ImplOpenGL2_Data* bd = IM_NEW(ImGui_ImplOpenGL2_Data)();
-    io.BackendRendererUserData = (void*)bd;
-    io.BackendRendererName = "imgui_impl_opengl2";
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;       // We can honor ImGuiPlatformIO::Textures[] requests during render.
-
-    return true;
-}
-
-void    ImGui_ImplOpenGL2_Shutdown()
-{
-    ImGui_ImplOpenGL2_Data* bd = ImGui_ImplOpenGL2_GetBackendData();
-    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
-    ImGuiIO& io = ImGui::GetIO();
-
-    ImGui_ImplOpenGL2_DestroyDeviceObjects();
-    io.BackendRendererName = nullptr;
-    io.BackendRendererUserData = nullptr;
-    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasTextures);
-    IM_DELETE(bd);
-}
-
-void    ImGui_ImplOpenGL2_NewFrame()
-{
-    ImGui_ImplOpenGL2_Data* bd = ImGui_ImplOpenGL2_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplOpenGL2_Init()?");
-    IM_UNUSED(bd);
-}
-
-static void ImGui_ImplOpenGL2_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height)
-{
-    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, vertex/texcoord/color pointers, polygon fill.
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-    //glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA); // In order to composite our output buffer we need to preserve alpha
-    glDisable(GL_CULL_FACE);
-    glDisable(GL_DEPTH_TEST);
-    glDisable(GL_STENCIL_TEST);
-    glDisable(GL_LIGHTING);
-    glDisable(GL_COLOR_MATERIAL);
-    glEnable(GL_SCISSOR_TEST);
-    glEnableClientState(GL_VERTEX_ARRAY);
-    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-    glEnableClientState(GL_COLOR_ARRAY);
-    glDisableClientState(GL_NORMAL_ARRAY);
-    glEnable(GL_TEXTURE_2D);
-    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
-    glShadeModel(GL_SMOOTH);
-    glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-
-    // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!),
-    // you may need to backup/reset/restore other state, e.g. for current shader using the commented lines below.
-    // (DO NOT MODIFY THIS FILE! Add the code in your calling function)
-    //   GLint last_program;
-    //   glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
-    //   glUseProgram(0);
-    //   ImGui_ImplOpenGL2_RenderDrawData(...);
-    //   glUseProgram(last_program)
-    // There are potentially many more states you could need to clear/setup that we can't access from default headers.
-    // e.g. glBindBuffer(GL_ARRAY_BUFFER, 0), glDisable(GL_TEXTURE_CUBE_MAP).
-
-    // Setup viewport, orthographic projection matrix
-    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
-    GL_CALL(glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height));
-    glMatrixMode(GL_PROJECTION);
-    glPushMatrix();
-    glLoadIdentity();
-    glOrtho(draw_data->DisplayPos.x, draw_data->DisplayPos.x + draw_data->DisplaySize.x, draw_data->DisplayPos.y + draw_data->DisplaySize.y, draw_data->DisplayPos.y, -1.0f, +1.0f);
-    glMatrixMode(GL_MODELVIEW);
-    glPushMatrix();
-    glLoadIdentity();
-}
-
-// OpenGL2 Render function.
-// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly.
-// This is in order to be able to run within an OpenGL engine that doesn't do so.
-void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
-{
-    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
-    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
-    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.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_ImplOpenGL2_UpdateTexture(tex);
-
-    // Backup GL state
-    GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
-    GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
-    GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
-    GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
-    GLint last_shade_model; glGetIntegerv(GL_SHADE_MODEL, &last_shade_model);
-    GLint last_tex_env_mode; glGetTexEnviv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, &last_tex_env_mode);
-    glPushAttrib(GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_TRANSFORM_BIT);
-
-    // Setup desired GL state
-    ImGui_ImplOpenGL2_SetupRenderState(draw_data, fb_width, fb_height);
-
-    // Will project scissor/clipping rectangles into framebuffer space
-    ImVec2 clip_off = draw_data->DisplayPos;         // (0,0) unless using multi-viewports
-    ImVec2 clip_scale = draw_data->FramebufferScale; // (1,1) unless using retina display which are often (2,2)
-
-    // Render command lists
-    for (int n = 0; n < draw_data->CmdListsCount; n++)
-    {
-        const ImDrawList* draw_list = draw_data->CmdLists[n];
-        const ImDrawVert* vtx_buffer = draw_list->VtxBuffer.Data;
-        const ImDrawIdx* idx_buffer = draw_list->IdxBuffer.Data;
-        glVertexPointer(2, GL_FLOAT, sizeof(ImDrawVert), (const GLvoid*)((const char*)vtx_buffer + offsetof(ImDrawVert, pos)));
-        glTexCoordPointer(2, GL_FLOAT, sizeof(ImDrawVert), (const GLvoid*)((const char*)vtx_buffer + offsetof(ImDrawVert, uv)));
-        glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(ImDrawVert), (const GLvoid*)((const char*)vtx_buffer + offsetof(ImDrawVert, col)));
-
-        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()
-                // (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_ImplOpenGL2_SetupRenderState(draw_data, fb_width, fb_height);
-                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_max.x <= clip_min.x || clip_max.y <= clip_min.y)
-                    continue;
-
-                // Apply scissor/clipping rectangle (Y is inverted in OpenGL)
-                glScissor((int)clip_min.x, (int)((float)fb_height - clip_max.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y));
-
-                // Bind texture, Draw
-                glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->GetTexID());
-                glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer + pcmd->IdxOffset);
-            }
-        }
-    }
-
-    // Restore modified GL state
-    glDisableClientState(GL_COLOR_ARRAY);
-    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
-    glDisableClientState(GL_VERTEX_ARRAY);
-    glBindTexture(GL_TEXTURE_2D, (GLuint)last_texture);
-    glMatrixMode(GL_MODELVIEW);
-    glPopMatrix();
-    glMatrixMode(GL_PROJECTION);
-    glPopMatrix();
-    glPopAttrib();
-    glPolygonMode(GL_FRONT, (GLenum)last_polygon_mode[0]); glPolygonMode(GL_BACK, (GLenum)last_polygon_mode[1]);
-    glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
-    glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
-    glShadeModel(last_shade_model);
-    glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, last_tex_env_mode);
-}
-
-void ImGui_ImplOpenGL2_UpdateTexture(ImTextureData* tex)
-{
-    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 == 0 && tex->BackendUserData == nullptr);
-        IM_ASSERT(tex->Format == ImTextureFormat_RGBA32);
-        const void* pixels = tex->GetPixels();
-        GLuint gl_texture_id = 0;
-
-        // 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)
-        GLint last_texture;
-        GL_CALL(glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture));
-        GL_CALL(glGenTextures(1, &gl_texture_id));
-        GL_CALL(glBindTexture(GL_TEXTURE_2D, gl_texture_id));
-        GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
-        GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
-        GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP));
-        GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP));
-        GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, 0));
-        GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex->Width, tex->Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels));
-
-        // Store identifiers
-        tex->SetTexID((ImTextureID)(intptr_t)gl_texture_id);
-        tex->SetStatus(ImTextureStatus_OK);
-
-        // Restore state
-        GL_CALL(glBindTexture(GL_TEXTURE_2D, last_texture));
-    }
-    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.
-        GLint last_texture;
-        GL_CALL(glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture));
-
-        GLuint gl_tex_id = (GLuint)(intptr_t)tex->TexID;
-        GL_CALL(glBindTexture(GL_TEXTURE_2D, gl_tex_id));
-        GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, tex->Width));
-        for (ImTextureRect& r : tex->Updates)
-            GL_CALL(glTexSubImage2D(GL_TEXTURE_2D, 0, r.x, r.y, r.w, r.h, GL_RGBA, GL_UNSIGNED_BYTE, tex->GetPixelsAt(r.x, r.y)));
-        GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, 0));
-        GL_CALL(glBindTexture(GL_TEXTURE_2D, last_texture)); // Restore state
-        tex->SetStatus(ImTextureStatus_OK);
-    }
-    else if (tex->Status == ImTextureStatus_WantDestroy)
-    {
-        GLuint gl_tex_id = (GLuint)(intptr_t)tex->TexID;
-        glDeleteTextures(1, &gl_tex_id);
-
-        // Clear identifiers and mark as destroyed (in order to allow e.g. calling InvalidateDeviceObjects while running)
-        tex->SetTexID(ImTextureID_Invalid);
-        tex->SetStatus(ImTextureStatus_Destroyed);
-    }
-}
-
-bool    ImGui_ImplOpenGL2_CreateDeviceObjects()
-{
-    return true;
-}
-
-void    ImGui_ImplOpenGL2_DestroyDeviceObjects()
-{
-    for (ImTextureData* tex : ImGui::GetPlatformIO().Textures)
-        if (tex->RefCount == 1)
-        {
-            tex->SetStatus(ImTextureStatus_WantDestroy);
-            ImGui_ImplOpenGL2_UpdateTexture(tex);
-        }
-}
-
-//-----------------------------------------------------------------------------
-
-#if defined(__clang__)
-#pragma clang diagnostic pop
-#endif
-
-#endif // #ifndef IMGUI_DISABLE