add renderer abstraction

2026-07-03 10:14:10 +02:00
parent f8f82bc653
commit aaa5b2078b
118 changed files with 1852545 additions and 1052 deletions
@@ -0,0 +1,61 @@
+// THIS FILE HAS BEEN AUTO-GENERATED BY THE 'DEAR BINDINGS' GENERATOR.
+// **DO NOT EDIT DIRECTLY**
+// https://github.com/dearimgui/dear_bindings
+
+// dear imgui: Renderer Backend for OpenGL2 (legacy OpenGL, fixed pipeline)
+// ImDrawIdx: vertex index. [Compile-time configurable type]
+// - To use 16-bit indices + allow large meshes: backend need to set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' and handle ImDrawCmd::VtxOffset (recommended).
+// - To use 32-bit indices: override with '#define ImDrawIdx unsigned int' in your imconfig.h file.
+#ifndef ImDrawIdx
+typedef unsigned short ImDrawIdx;  // Default: 16-bit (for maximum compatibility with renderer backends)
+#endif // #ifndef ImDrawIdx
+// 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).
+//  [X] Renderer: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'.
+// 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.
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+#include "dcimgui.h"
+#ifndef IMGUI_DISABLE
+typedef struct ImDrawData_t ImDrawData;
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
+CIMGUI_IMPL_API bool cImGui_ImplOpenGL2_Init(void);
+CIMGUI_IMPL_API void cImGui_ImplOpenGL2_Shutdown(void);
+CIMGUI_IMPL_API void cImGui_ImplOpenGL2_NewFrame(void);
+CIMGUI_IMPL_API void cImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data);
+
+// Called by Init/NewFrame/Shutdown
+CIMGUI_IMPL_API bool cImGui_ImplOpenGL2_CreateDeviceObjects(void);
+CIMGUI_IMPL_API void cImGui_ImplOpenGL2_DestroyDeviceObjects(void);
+
+// (Advanced) Use e.g. if you need to precisely control the timing of texture updates (e.g. for staged rendering), by setting ImDrawData::Textures = nullptr to handle this manually.
+CIMGUI_IMPL_API void cImGui_ImplOpenGL2_UpdateTexture(ImTextureData* tex);
+#endif// #ifndef IMGUI_DISABLE
+#ifdef __cplusplus
+} // End of extern "C" block
+#endif