/[cvs]/joko/Uni/BSArch/04/bmp_fractal.c
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Diff of /joko/Uni/BSArch/04/bmp_fractal.c

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revision 1.4 by joko, Sat Jul 1 11:58:49 2006 UTC revision 1.5 by joko, Sat Jul 1 12:19:46 2006 UTC
# Line 102  int main(int argc, char *argv[]) { Line 102  int main(int argc, char *argv[]) {
102    LPVOID pData;    LPVOID pData;
103    unsigned char *pDataBitmap, *pDataBitmapCurrent;    unsigned char *pDataBitmap, *pDataBitmapCurrent;
104    
105      // workers
106      unsigned int workers = 3;
107      unsigned int worker_index, worker_rows, worker_startrow;
108      
109    // fractal calculation    // fractal calculation
110    int x, y;    int x, y;
111    char bgr[3];    char bgr[3];
# Line 149  int main(int argc, char *argv[]) { Line 153  int main(int argc, char *argv[]) {
153    }    }
154    */    */
155    
156      // calculate segments of bitmap for worker threads/processes
157      worker_rows = YSIZE / workers;
158      printf("rows for each worker: %i\n", worker_rows);
159      for (worker_index = 0; worker_index < workers; worker_index++) {
160        
161        // number of row to start for each worker
162        worker_startrow = worker_index * worker_rows;
163        
164        // recalculate number of rows for last worker if (YSIZE mod workers) != 0
165        if (worker_index == workers - 1) {
166          worker_rows = YSIZE - worker_startrow;
167          printf("rows for last worker: %i\n", worker_rows);
168        }
169      }
170    
171    // calculate fractal    // calculate fractal
172    for (y=YSIZE-1; y>=0; y--) {    for (y=YSIZE-1; y>=0; y--) {
173            for (x=0; x<XSIZE; x++) {            for (x=0; x<XSIZE; x++) {
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