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import sdl, some tests, nothing work yet
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37 changed files with 721 additions and 167 deletions
73
platform/sdl/tests/sdl_surface_test.cpp
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73
platform/sdl/tests/sdl_surface_test.cpp
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#include <SDL2/SDL.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define WIDTH 640
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#define HEIGHT 480
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int main(int argc, char *argv[]) {
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// Inicializace SDL
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if (SDL_Init(SDL_INIT_VIDEO) != 0) {
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fprintf(stderr, "Chyba při inicializaci SDL: %s\n", SDL_GetError());
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return 1;
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}
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// Vytvoření SDL okna
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SDL_Window *window = SDL_CreateWindow("DOS Game Port", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, WIDTH, HEIGHT, 0);
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if (!window) {
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fprintf(stderr, "Chyba při vytváření okna: %s\n", SDL_GetError());
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SDL_Quit();
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return 1;
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}
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// Vytvoření rendereru (pouze pro zobrazení)
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SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
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if (!renderer) {
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fprintf(stderr, "Chyba při vytváření rendereru: %s\n", SDL_GetError());
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SDL_DestroyWindow(window);
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SDL_Quit();
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return 1;
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}
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// Vytvoření SDL Surface (backbuffer)
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SDL_Texture *texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGB565,SDL_TEXTUREACCESS_STREAMING, WIDTH, HEIGHT);
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if (!texture) {
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fprintf(stderr, "Chyba při vytváření surface: %s\n", SDL_GetError());
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SDL_DestroyRenderer(renderer);
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SDL_DestroyWindow(window);
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SDL_Quit();
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return 1;
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}
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void *raw_pixels;
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int pitch;
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SDL_LockTexture(texture, NULL, &raw_pixels, &pitch);
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// Přímý přístup do paměti surface
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Uint16 *pixels = reinterpret_cast<Uint16 *>(raw_pixels);
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printf("Adresa pixelů: %p, pitch: %d bajtů\n", (void *)pixels, pitch);
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// Software rendering - příklad kreslení do paměti
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for (int y = 0; y < HEIGHT; y++) {
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for (int x = 0; x < WIDTH; x++) {
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Uint16 color = (x ^ y) & 0xFFFF; // Příklad barvy
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pixels[y * (pitch / 2) + x] = color; // Zápis pixelu
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}
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}
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SDL_UnlockTexture(texture);
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SDL_RenderClear(renderer);
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SDL_RenderCopy(renderer, texture, NULL, NULL);
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SDL_RenderPresent(renderer);
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SDL_Delay(3000); // Zobrazení okna na 3 sekundy
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// Uvolnění zdrojů
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SDL_DestroyTexture(texture);
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SDL_DestroyRenderer(renderer);
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SDL_DestroyWindow(window);
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SDL_Quit();
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return 0;
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}
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