Render background image

CMakeLists.txt

@@ -4,12 +4,13 @@ project(HansTheGatherer)
 
 # Option to switch real platform vs. SDL implementation...
 
-find_package(SDL3 REQUIRED)
-find_package(flecs REQUIRED)
-find_package(spdlog REQUIRED)
+find_package(SDL3 CONFIG REQUIRED)
+find_package(SDL3_image CONFIG REQUIRED)
+find_package(flecs CONFIG REQUIRED)
+find_package(spdlog CONFIG REQUIRED)
 
 add_executable(HansTheGatherer main.cpp)
 
-target_link_libraries(HansTheGatherer SDL3::SDL3 flecs::flecs spdlog::spdlog)
+target_link_libraries(HansTheGatherer SDL3::SDL3 SDL3_image::SDL3_image flecs::flecs spdlog::spdlog)
 
 set_property(TARGET HansTheGatherer PROPERTY CXX_STANDARD 20)

NOTICE

@@ -0,0 +1,7 @@
+Assets used by this project:
+
+- "Fruit+" by SciGho — https://ninjikin.itch.io/fruit
+  License: https://creativecommons.org/licenses/by/4.0/
+- "Jungle Background (Parallax)" by TrashBoat93
+  URL: https://trashboat93.itch.io/jungle-background-parallax
+

main.cpp

@@ -1,13 +1,19 @@
 #include <SDL3/SDL.h>
 #include <SDL3/SDL_error.h>
+#include <SDL3/SDL_iostream.h>
 #include <SDL3/SDL_render.h>
+#include <SDL3/SDL_video.h>
+#include <SDL3_image/SDL_image.h>
 #include <flecs.h>
 #include <spdlog/spdlog.h>
 
 const uint8_t image_data[] = {
-#embed "main.cpp"
+#embed "jungle.jpg"
 };
 
+static constexpr int WINDOW_WIDTH = 400;
+static constexpr int WINDOW_HEIGHT = 280;
+
 auto main() -> int {
   spdlog::info("Initialize SDL...");
   bool sdl_success = SDL_Init(SDL_INIT_VIDEO);
@@ -16,7 +22,8 @@ auto main() -> int {
     std::terminate();
   }
 
-  auto *sdl_window = SDL_CreateWindow("HansTheGatherer", 400, 280, 0);
+  auto *sdl_window =
+      SDL_CreateWindow("HansTheGatherer", WINDOW_WIDTH, WINDOW_HEIGHT, 0);
   if (sdl_window == nullptr) {
     spdlog::critical("Failed to create SDL window!\nCause: {}", SDL_GetError());
   }
@@ -29,6 +36,12 @@ auto main() -> int {
 
   flecs::world world;
 
+  auto *image_iostream = SDL_IOFromConstMem(image_data, sizeof(image_data));
+  SDL_Texture *img = IMG_LoadTexture_IO(sdl_renderer, image_iostream, false);
+  if (img == nullptr) {
+    spdlog::error("Failed to load SDL texture!\nCause: {}", SDL_GetError());
+  }
+
   bool exit_gameloop = false;
   while (!exit_gameloop) {
     SDL_Event event;
@@ -44,6 +57,10 @@ auto main() -> int {
         break;
       }
     }
+
+    SDL_RenderClear(sdl_renderer);
+    SDL_RenderTexture(sdl_renderer, img, nullptr, nullptr);
+    SDL_RenderPresent(sdl_renderer);
   }
 
   SDL_DestroyRenderer(sdl_renderer);

vcpkg.json

@@ -2,6 +2,10 @@
   "dependencies": [
     "spdlog",
     "sdl3",
+    {
+      "name": "sdl3-image",
+      "features": ["jpeg"]
+    },
     "spdlog",
     "flecs"
   ]