程式語言 - Java - Android - SDL v2.0 - Fill Color

參考資訊：
https://github.com/steward-fu/sdl2

app/jni/src/main.c

#include <stdio.h>
#include <stdlib.h>
#include <SDL.h>
 
int main(int argc, char **argv)
{
    const int w = 320;
    const int h = 240;
    const int bpp = 16;
    SDL_Rect rt = { 0 };
    SDL_Window *window = NULL;
    SDL_Surface *screen = NULL;
    SDL_Texture *texture = NULL;
    SDL_Renderer *renderer = NULL;
 
    SDL_Init(SDL_INIT_VIDEO);
    window = SDL_CreateWindow("main", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, w, h, SDL_WINDOW_SHOWN);
    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
    screen = SDL_CreateRGBSurface(0, w, h, bpp, 0, 0, 0, 0);
    texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGB565, SDL_TEXTUREACCESS_STREAMING, w, h);

    SDL_FillRect(screen, &screen->clip_rect, SDL_MapRGB(screen->format, 0xff, 0x00, 0x00));

    rt.x = 50;
    rt.y = 50;
    rt.w = 30;
    rt.h = 30;
    SDL_FillRect(screen, &rt, SDL_MapRGB(screen->format, 0x00, 0xff, 0x00));
 
    rt.x = 100;
    rt.y = 100;
    rt.w = 50;
    rt.h = 100;
    SDL_FillRect(screen, &rt, SDL_MapRGB(screen->format, 0x00, 0x00, 0xff));
 
    SDL_UpdateTexture(texture, NULL, screen->pixels, screen->pitch);
    SDL_RenderClear(renderer);
    SDL_RenderCopy(renderer, texture, NULL, NULL);
    SDL_RenderPresent(renderer);
 
    SDL_Delay(3000);
 
    SDL_FreeSurface(screen);
    SDL_DestroyTexture(texture);
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();
    return 0;
}

app/jni/src/CMakeLists.txt

cmake_minimum_required(VERSION 3.6)

project(MY_APP)

find_library(SDL2 SDL2)
find_library(SDL2_gfx SDL2_gfx)

add_library(main SHARED
    main.c
)

target_link_libraries(main
    SDL2
    SDL2_gfx
    android
    log
)

set_target_properties(main PROPERTIES
    C_STANDARD 99
    C_STANDARD_REQUIRED ON
)

編譯

$ ./gradlew assembleDebug -PBUILD_AS_LIBRARY=true
$ ./gradlew assembleDebug -PBUILD_AS_APPLICATION=true
$ file app/build/outputs/apk/debug/app-debug.apk
    app/build/outputs/apk/debug/app-debug.apk: Android package (APK), with gradle app-metadata.properties, with APK Signing Block

完成