39 строки
898 B
C
39 строки
898 B
C
#include <stdio.h>
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#include <SDL/SDL.h>
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#include <assert.h>
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#include <stdint.h>
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#define width 600
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#define height 450
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int main() {
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uint8_t pixels[width * height * 4];
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uint8_t *end = pixels + width * height * 4;
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uint8_t *pixel = pixels;
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SDL_Rect rect = {0, 0, width, height};
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while (pixel != end) {
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*pixel = (pixel - pixels) * 256 / (width * height * 4);
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pixel++;
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}
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SDL_Init(SDL_INIT_VIDEO);
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SDL_Surface *screen = SDL_SetVideoMode(width, height, 32, SDL_HWSURFACE);
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SDL_Surface *image = SDL_CreateRGBSurfaceFrom(pixels, width, height, 32, width * 4,
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0x000000ff,
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0x0000ff00,
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0x00ff0000,
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0xff000000);
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SDL_FillRect(screen, &rect, SDL_MapRGB(screen->format, 255, 0, 0));
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SDL_BlitSurface(image, &rect, screen, &rect);
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SDL_UpdateRect(screen, 0, 0, width, height);
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printf("There should be a red to white gradient\n");
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SDL_Quit();
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return 0;
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}
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