53 строки
1.4 KiB
C
53 строки
1.4 KiB
C
#include <stdio.h>
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#include <SDL/SDL.h>
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#include <assert.h>
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int main() {
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Uint32 c;
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Uint8 r, g, b, a;
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SDL_Rect rect = {0,0,300,450};
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SDL_Init(SDL_INIT_VIDEO);
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SDL_Surface *screen = SDL_SetVideoMode(600, 450, 32, SDL_HWSURFACE);
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c = SDL_MapRGB(screen->format, 0xff, 0x00, 0x00); // OPAQUE RED
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SDL_GetRGB(c, screen->format, &r, &g, &b);
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assert(r == 0xff);
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assert(g == 0x00);
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assert(b == 0x00);
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SDL_FillRect(screen, &rect, c);
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rect.x = 300;
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c = SDL_MapRGB(screen->format, 0x7f, 0x7f, 0x00); // OPAQUE MUSTARD
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SDL_GetRGB(c, screen->format, &r, &g, &b);
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assert(r == 0x7f);
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assert(g == 0x7f);
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assert(b == 0x00);
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SDL_FillRect(screen, &rect, c);
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rect.x = 150;
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rect.y = 112;
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rect.w = 300;
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rect.h = 225;
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c = SDL_MapRGBA(screen->format, 0xff, 0xff, 0xff, 0xff); // OPAQUE WHITE
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SDL_GetRGBA(c, screen->format, &r, &g, &b, &a);
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assert(r == 0xff);
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assert(g == 0xff);
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assert(b == 0xff);
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assert(a == 0xff);
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SDL_FillRect(screen, &rect, c);
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c = SDL_MapRGBA(screen->format, 0x00, 0x00, 0x00, 0x00); // TRANSPARENT BLACK
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SDL_GetRGBA(c, screen->format, &r, &g, &b, &a);
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assert(r == 0x00);
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assert(g == 0x00);
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assert(b == 0x00);
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assert(a == 0x00);
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SDL_FillRect(screen, &rect, c);
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SDL_UpdateRect(screen, 0, 0, 600, 450);
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printf("The left half should be red and the right half mustard.\n");
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printf("There should be a white rectangle in the center.\n");
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SDL_Quit();
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return 0;
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}
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