| 227 |
|
|
| 228 |
|
const int bytes_per_row = VideoMonitor.bytes_per_row; |
| 229 |
|
const int bytes_per_pixel = VideoMonitor.bytes_per_row / VideoMonitor.x; |
| 230 |
< |
int i, j; |
| 230 |
> |
int i = y1 * bytes_per_row, j; |
| 231 |
|
|
| 232 |
– |
// Check for first column from left and first column |
| 233 |
– |
// from right that have changed |
| 234 |
– |
int x1, x2, width; |
| 232 |
|
if (depth == 1) { |
| 233 |
|
|
| 237 |
– |
x1 = VideoMonitor.x - 1; |
| 238 |
– |
for (j = y1; j <= y2; j++) { |
| 239 |
– |
uint8 * const p1 = &the_buffer[j * bytes_per_row]; |
| 240 |
– |
uint8 * const p2 = &the_buffer_copy[j * bytes_per_row]; |
| 241 |
– |
for (i = 0; i < (x1>>3); i++) { |
| 242 |
– |
if (p1[i] != p2[i]) { |
| 243 |
– |
x1 = i << 3; |
| 244 |
– |
break; |
| 245 |
– |
} |
| 246 |
– |
} |
| 247 |
– |
} |
| 248 |
– |
|
| 249 |
– |
x2 = x1; |
| 250 |
– |
for (j = y2; j >= y1; j--) { |
| 251 |
– |
uint8 * const p1 = &the_buffer[j * bytes_per_row]; |
| 252 |
– |
uint8 * const p2 = &the_buffer_copy[j * bytes_per_row]; |
| 253 |
– |
for (i = (VideoMonitor.x>>3) - 1; i > (x2>>3); i--) { |
| 254 |
– |
if (p1[i] != p2[i]) { |
| 255 |
– |
x2 = (i << 3) + 7; |
| 256 |
– |
break; |
| 257 |
– |
} |
| 258 |
– |
} |
| 259 |
– |
} |
| 260 |
– |
width = x2 - x1 + 1; |
| 261 |
– |
|
| 234 |
|
// Update the_host_buffer and copy of the_buffer |
| 263 |
– |
i = y1 * bytes_per_row + (x1 >> 3); |
| 235 |
|
for (j = y1; j <= y2; j++) { |
| 236 |
< |
Screen_blit(the_host_buffer + i, the_buffer + i, width >> 3); |
| 266 |
< |
memcpy(the_buffer_copy + i, the_buffer + i, width >> 3); |
| 236 |
> |
Screen_blit(the_host_buffer + i, the_buffer + i, VideoMonitor.x >> 3); |
| 237 |
|
i += bytes_per_row; |
| 238 |
|
} |
| 239 |
|
|
| 240 |
|
} else { |
| 241 |
|
|
| 272 |
– |
x1 = VideoMonitor.x * bytes_per_pixel - 1; |
| 273 |
– |
for (j = y1; j <= y2; j++) { |
| 274 |
– |
uint8 * const p1 = &the_buffer[j * bytes_per_row]; |
| 275 |
– |
uint8 * const p2 = &the_buffer_copy[j * bytes_per_row]; |
| 276 |
– |
for (i = 0; i < x1; i++) { |
| 277 |
– |
if (p1[i] != p2[i]) { |
| 278 |
– |
x1 = i; |
| 279 |
– |
break; |
| 280 |
– |
} |
| 281 |
– |
} |
| 282 |
– |
} |
| 283 |
– |
x1 /= bytes_per_pixel; |
| 284 |
– |
|
| 285 |
– |
x2 = x1 * bytes_per_pixel; |
| 286 |
– |
for (j = y2; j >= y1; j--) { |
| 287 |
– |
uint8 * const p1 = &the_buffer[j * bytes_per_row]; |
| 288 |
– |
uint8 * const p2 = &the_buffer_copy[j * bytes_per_row]; |
| 289 |
– |
for (i = VideoMonitor.x * bytes_per_pixel - 1; i > x2; i--) { |
| 290 |
– |
if (p1[i] != p2[i]) { |
| 291 |
– |
x2 = i; |
| 292 |
– |
break; |
| 293 |
– |
} |
| 294 |
– |
} |
| 295 |
– |
} |
| 296 |
– |
x2 /= bytes_per_pixel; |
| 297 |
– |
width = x2 - x1 + 1; |
| 298 |
– |
|
| 242 |
|
// Update the_host_buffer and copy of the_buffer |
| 300 |
– |
i = y1 * bytes_per_row + x1 * bytes_per_pixel; |
| 243 |
|
for (j = y1; j <= y2; j++) { |
| 244 |
< |
Screen_blit(the_host_buffer + i, the_buffer + i, bytes_per_pixel * width); |
| 303 |
< |
memcpy(the_buffer_copy + i, the_buffer + i, bytes_per_pixel * width); |
| 244 |
> |
Screen_blit(the_host_buffer + i, the_buffer + i, bytes_per_pixel * VideoMonitor.x); |
| 245 |
|
i += bytes_per_row; |
| 246 |
|
} |
| 247 |
|
} |
| 248 |
< |
|
| 248 |
> |
|
| 249 |
|
if (have_shm) |
| 250 |
< |
XShmPutImage(x_display, the_win, the_gc, img, x1, y1, x1, y1, width, height, 0); |
| 250 |
> |
XShmPutImage(x_display, the_win, the_gc, img, 0, y1, 0, y1, VideoMonitor.x, height, 0); |
| 251 |
|
else |
| 252 |
< |
XPutImage(x_display, the_win, the_gc, img, x1, y1, x1, y1, width, height); |
| 252 |
> |
XPutImage(x_display, the_win, the_gc, img, 0, y1, 0, y1, VideoMonitor.x, height); |
| 253 |
|
} |
| 254 |
+ |
|
| 255 |
|
mainBuffer.dirty = false; |
| 256 |
|
} |
| 257 |
|
|
