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wire up imgui

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This commit is contained in:
Green Sky
2023-07-26 01:11:17 +02:00
parent f66b8d3ea2
commit 07765b4ad7
5 changed files with 146 additions and 13 deletions
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41
src/main.cpp
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@ -1,7 +1,12 @@
#include "SDL_video.h"
#include <SDL3/SDL.h>
#include <SDL3/SDL_main.h>
#include <imgui/imgui.h>
#include <imgui/backends/imgui_impl_sdl3.h>
#include <imgui/backends/imgui_impl_sdlrenderer3.h>
#include "./theme.hpp"
#include <memory>
#include <future>
#include <iostream>
@ -14,7 +19,6 @@ int main(int argc, char** argv) {
// me just messing with RAII cleanup
auto sdl_scope = std::async(std::launch::deferred, &SDL_Quit);
// more RAII
std::unique_ptr<SDL_Window, decltype(&SDL_DestroyWindow)> window {
SDL_CreateWindow("tomato", 640, 480, SDL_WINDOW_RESIZABLE),
@ -26,17 +30,26 @@ int main(int argc, char** argv) {
return 1;
}
// more RAII
std::unique_ptr<SDL_Renderer, decltype(&SDL_DestroyRenderer)> renderer {
SDL_CreateRenderer(window.get(), nullptr, 0),
&SDL_DestroyRenderer
};
if (!window) {
std::cerr << "SDL_CreateWindow failed (" << SDL_GetError() << ")\n";
if (!renderer) {
std::cerr << "SDL_CreateRenderer failed (" << SDL_GetError() << ")\n";
return 1;
}
IMGUI_CHECKVERSION();
ImGui::CreateContext();
//ImGui::StyleColorsDark();
setThemeGreen();
ImGui_ImplSDL3_InitForSDLRenderer(window.get(), renderer.get());
auto imgui_sdl_scope = std::async(std::launch::deferred, &ImGui_ImplSDL3_Shutdown);
ImGui_ImplSDLRenderer3_Init(renderer.get());
auto imgui_sdlrenderer_scope = std::async(std::launch::deferred, &ImGui_ImplSDLRenderer3_Shutdown);
bool quit = false;
while (!quit) {
SDL_Event event;
@ -45,19 +58,25 @@ int main(int argc, char** argv) {
quit = true;
break;
}
ImGui_ImplSDL3_ProcessEvent(&event);
}
if (quit) {
break;
}
SDL_SetRenderDrawColor(renderer.get(), 0x10, 0x10, 0x10, SDL_ALPHA_OPAQUE);
SDL_RenderClear(renderer.get());
ImGui_ImplSDLRenderer3_NewFrame();
ImGui_ImplSDL3_NewFrame();
ImGui::NewFrame();
SDL_FRect rect{100, 100, 100, 100};
SDL_SetRenderDrawColor(renderer.get(), 0xff, 0x00, 0x00, SDL_ALPHA_OPAQUE);
SDL_RenderRect(renderer.get(), &rect);
ImGui::ShowDemoWindow();
ImGui::Render();
ImGui_ImplSDLRenderer3_RenderDrawData(ImGui::GetDrawData());
SDL_RenderPresent(renderer.get());
// clearing after present is (should) more performant, but first frame is a mess
SDL_SetRenderDrawColor(renderer.get(), 0x10, 0x10, 0x10, SDL_ALPHA_OPAQUE);
SDL_RenderClear(renderer.get());
}
return 0;