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 +1,86 @@
+// 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 SDL_GPU
+// Auto-generated forward declarations for C header
+typedef struct ImGui_ImplSDLGPU3_InitInfo_t ImGui_ImplSDLGPU3_InitInfo;
+typedef struct ImGui_ImplSDLGPU3_RenderState_t ImGui_ImplSDLGPU3_RenderState;
+// 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 the SDL3 Platform Backend
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'SDL_GPUTexture*' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef! **IMPORTANT** Before 2025/08/08, ImTextureID was a reference to a SDL_GPUTextureSamplerBinding struct.
+//  [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: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'.
+
+// The aim of imgui_impl_sdlgpu3.h/.cpp is to be usable in your engine without any modification.
+// IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
+
+// 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
+
+// Important note to the reader who wish to integrate imgui_impl_sdlgpu3.cpp/.h in their own engine/app.
+// - Unlike other backends, the user must call the function ImGui_ImplSDLGPU_PrepareDrawData BEFORE issuing a SDL_GPURenderPass containing ImGui_ImplSDLGPU_RenderDrawData.
+//   Calling the function is MANDATORY, otherwise the ImGui will not upload neither the vertex nor the index buffer for the GPU. See imgui_impl_sdlgpu3.cpp for more info.
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+#include "dcimgui.h"
+#ifndef IMGUI_DISABLE
+#include <SDL3/SDL_gpu.h>  // Initialization data, for ImGui_ImplSDLGPU_Init()
+// - Remember to set ColorTargetFormat to the correct format. If you're rendering to the swapchain, call SDL_GetGPUSwapchainTextureFormat() to query the right value
+struct ImGui_ImplSDLGPU3_InitInfo_t
+{
+    SDL_GPUDevice*              Device /* = nullptr */;
+    SDL_GPUTextureFormat        ColorTargetFormat /* = SDL_GPU_TEXTUREFORMAT_INVALID */;
+    SDL_GPUSampleCount          MSAASamples /* = SDL_GPU_SAMPLECOUNT_1 */;
+    SDL_GPUSwapchainComposition SwapchainComposition /* = SDL_GPU_SWAPCHAINCOMPOSITION_SDR */;  // Only used in multi-viewports mode.
+    SDL_GPUPresentMode          PresentMode /* = SDL_GPU_PRESENTMODE_VSYNC */;                  // Only used in multi-viewports mode.
+};
+
+typedef struct ImDrawData_t ImDrawData;
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
+CIMGUI_IMPL_API bool cImGui_ImplSDLGPU3_Init(ImGui_ImplSDLGPU3_InitInfo* info);
+CIMGUI_IMPL_API void cImGui_ImplSDLGPU3_Shutdown(void);
+CIMGUI_IMPL_API void cImGui_ImplSDLGPU3_NewFrame(void);
+CIMGUI_IMPL_API void cImGui_ImplSDLGPU3_PrepareDrawData(ImDrawData* draw_data, SDL_GPUCommandBuffer* command_buffer);
+CIMGUI_IMPL_API void cImGui_ImplSDLGPU3_RenderDrawData(ImDrawData* draw_data, SDL_GPUCommandBuffer* command_buffer, SDL_GPURenderPass* render_pass);                                                  // Implied pipeline = nullptr
+CIMGUI_IMPL_API void cImGui_ImplSDLGPU3_RenderDrawDataEx(ImDrawData* draw_data, SDL_GPUCommandBuffer* command_buffer, SDL_GPURenderPass* render_pass, SDL_GPUGraphicsPipeline* pipeline /* = nullptr */);
+
+// Use if you want to reset your rendering device without losing Dear ImGui state.
+CIMGUI_IMPL_API void cImGui_ImplSDLGPU3_CreateDeviceObjects(void);
+CIMGUI_IMPL_API void cImGui_ImplSDLGPU3_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_ImplSDLGPU3_UpdateTexture(ImTextureData* tex);
+
+// [BETA] Selected render state data shared with callbacks.
+// This is temporarily stored in GetPlatformIO().Renderer_RenderState during the ImGui_ImplSDLGPU3_RenderDrawData() call.
+// (Please open an issue if you feel you need access to more data)
+struct ImGui_ImplSDLGPU3_RenderState_t
+{
+    SDL_GPUDevice*  Device;
+    SDL_GPUSampler* SamplerLinear;   // Bilinear filtering sampler
+    SDL_GPUSampler* SamplerNearest;  // Nearest/point filtering sampler
+    SDL_GPUSampler* SamplerCurrent;  // Current sampler (may be changed by callback)
+};
+#endif// #ifndef IMGUI_DISABLE
+#ifdef __cplusplus
+} // End of extern "C" block
+#endif