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README.md updated with backend_test info

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Victor Bombi
2020-10-16 16:29:47 +02:00
parent 5a5ac45e55
commit c1a4efeb10
2 changed files with 10 additions and 3 deletions
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6
README.md
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@@ -27,6 +27,8 @@ Notes:
* cmake options are IMGUI_STATIC (compiling as static library), IMGUI_FREETYPE (for using Freetype2) and FREETYPE_PATH (Freetype2 cmake install location) * cmake options are IMGUI_STATIC (compiling as static library), IMGUI_FREETYPE (for using Freetype2) and FREETYPE_PATH (Freetype2 cmake install location)
* or as in https://github.com/sonoro1234/LuaJIT-ImGui/tree/master/build * or as in https://github.com/sonoro1234/LuaJIT-ImGui/tree/master/build
For compiling with backends there is now an example with SDL2 and opengl3 in folder backend_test. It will generate a cimgui_sdl module and a test_sdl executable. You only need to provide SDL_PATH telling cmake where to look for SDL2 cmake installation.
# using generator # using generator
* this is only needed (before compilation) if you want an imgui version different from the one provided, otherwise generation is already done. * this is only needed (before compilation) if you want an imgui version different from the one provided, otherwise generation is already done.
@@ -86,6 +88,10 @@ Notes:
* functions that belong to a struct have an extra first argument with a pointer to the struct. * functions that belong to a struct have an extra first argument with a pointer to the struct.
* where a function returns UDT (user defined type) by value some compilers complain so the function is generated accepting a pointer to the UDT type as the first argument (or second if belongs to a struct). * where a function returns UDT (user defined type) by value some compilers complain so the function is generated accepting a pointer to the UDT type as the first argument (or second if belongs to a struct).
# usage with backends
* look at backend_test folder for a cmake module building with SDL and opengl3.
# example bindings based on cimgui # example bindings based on cimgui
* [LuaJIT-ImGui](https://github.com/sonoro1234/LuaJIT-ImGui) * [LuaJIT-ImGui](https://github.com/sonoro1234/LuaJIT-ImGui)

7
backend_test/main.c
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@@ -79,9 +79,10 @@ int main(int argc, char* argv[])
ImGuiIO* ioptr = igGetIO(); ImGuiIO* ioptr = igGetIO();
ioptr->ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls ioptr->ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
//ioptr->ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls //ioptr->ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
#ifdef ImGuiConfigFlags_DockingEnable
ioptr->ConfigFlags |= ImGuiConfigFlags_DockingEnable; // Enable Docking ioptr->ConfigFlags |= ImGuiConfigFlags_DockingEnable; // Enable Docking
ioptr->ConfigFlags |= ImGuiConfigFlags_ViewportsEnable; // Enable Multi-Viewport / Platform Windows ioptr->ConfigFlags |= ImGuiConfigFlags_ViewportsEnable; // Enable Multi-Viewport / Platform Windows
#endif
ImGui_ImplSDL2_InitForOpenGL(window, gl_context); ImGui_ImplSDL2_InitForOpenGL(window, gl_context);
ImGui_ImplOpenGL3_Init(glsl_version); ImGui_ImplOpenGL3_Init(glsl_version);
@@ -167,7 +168,7 @@ int main(int argc, char* argv[])
glClearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w); glClearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
glClear(GL_COLOR_BUFFER_BIT); glClear(GL_COLOR_BUFFER_BIT);
ImGui_ImplOpenGL3_RenderDrawData(igGetDrawData()); ImGui_ImplOpenGL3_RenderDrawData(igGetDrawData());
#ifdef ImGuiConfigFlags_DockingEnable
if (ioptr->ConfigFlags & ImGuiConfigFlags_ViewportsEnable) if (ioptr->ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
{ {
SDL_Window* backup_current_window = SDL_GL_GetCurrentWindow(); SDL_Window* backup_current_window = SDL_GL_GetCurrentWindow();
@@ -176,7 +177,7 @@ int main(int argc, char* argv[])
igRenderPlatformWindowsDefault(NULL,NULL); igRenderPlatformWindowsDefault(NULL,NULL);
SDL_GL_MakeCurrent(backup_current_window, backup_current_context); SDL_GL_MakeCurrent(backup_current_window, backup_current_context);
} }
#endif
SDL_GL_SwapWindow(window); SDL_GL_SwapWindow(window);
} }