Rev 9204 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 9204 | turbocat | 1 | #include "SDL.h" |
| 2 | #include |
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| 3 | |||
| 4 | #define WIDTH 640 |
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| 5 | #define HEIGHT 480 |
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| 6 | #define BPP 4 |
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| 7 | #define DEPTH 32 |
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| 9766 | turbocat | 8 | |
| 9 | void setpixel(SDL_Surface* screen, int x, int y, Uint8 r, Uint8 g, Uint8 b) |
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| 9204 | turbocat | 10 | { |
| 9766 | turbocat | 11 | Uint32* pixmem32; |
| 12 | Uint32 colour; |
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| 13 | |||
| 14 | colour = SDL_MapRGB(screen->format, r, g, b); |
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| 15 | |||
| 16 | pixmem32 = (Uint32*)screen->pixels + y + x; |
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| 9204 | turbocat | 17 | *pixmem32 = colour; |
| 18 | } |
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| 9766 | turbocat | 19 | |
| 9204 | turbocat | 20 | void DrawScreen(SDL_Surface* screen, int h) |
| 21 | { |
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| 22 | int x, y, ytimesw; |
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| 9766 | turbocat | 23 | |
| 24 | if (SDL_MUSTLOCK(screen)) { |
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| 25 | if (SDL_LockSurface(screen) < 0) |
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| 26 | return; |
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| 9204 | turbocat | 27 | } |
| 9766 | turbocat | 28 | |
| 29 | for (y = 0; y < screen->h; y++) { |
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| 30 | ytimesw = y * screen->pitch / BPP; |
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| 31 | for (x = 0; x < screen->w; x++) { |
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| 32 | setpixel(screen, x, ytimesw, (x * x) / 256 + 3 * y + h, (y * y) / 256 + x + h, h); |
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| 9204 | turbocat | 33 | } |
| 34 | } |
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| 9766 | turbocat | 35 | if (SDL_MUSTLOCK(screen)) |
| 36 | SDL_UnlockSurface(screen); |
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| 37 | |||
| 9204 | turbocat | 38 | SDL_Flip(screen); |
| 39 | } |
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| 9766 | turbocat | 40 | |
| 9204 | turbocat | 41 | int main(int argc, char* argv[]) |
| 42 | { |
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| 9766 | turbocat | 43 | SDL_Surface* screen; |
| 9204 | turbocat | 44 | SDL_Event event; |
| 9766 | turbocat | 45 | |
| 9204 | turbocat | 46 | int keypress = 0; |
| 9766 | turbocat | 47 | int h = 0; |
| 48 | |||
| 49 | if (SDL_Init(SDL_INIT_VIDEO) < 0) |
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| 50 | return 1; |
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| 51 | |||
| 52 | if (!(screen = SDL_SetVideoMode(WIDTH, HEIGHT, DEPTH, SDL_FULLSCREEN | SDL_HWSURFACE))) { |
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| 9204 | turbocat | 53 | SDL_Quit(); |
| 54 | return 1; |
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| 55 | } |
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| 9766 | turbocat | 56 | |
| 57 | while (!keypress) { |
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| 58 | DrawScreen(screen, h++); |
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| 59 | while (SDL_PollEvent(&event)) { |
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| 60 | switch (event.type) { |
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| 61 | case SDL_QUIT: |
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| 62 | keypress = 1; |
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| 63 | break; |
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| 64 | case SDL_KEYDOWN: |
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| 65 | keypress = 1; |
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| 66 | break; |
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| 67 | } |
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| 68 | } |
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| 9204 | turbocat | 69 | } |
| 9766 | turbocat | 70 | |
| 9204 | turbocat | 71 | SDL_Quit(); |
| 72 | return 0; |
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| 73 | } |