- case 0x80: // vid -> vid
- render_block_move(psx_gpu, list_s16[2] & 0x3FF, list_s16[3] & 0x1FF,
- list_s16[4] & 0x3FF, list_s16[5] & 0x1FF,
- ((list_s16[6] - 1) & 0x3FF) + 1, ((list_s16[7] - 1) & 0x1FF) + 1);
- break;
-
+ case 0x80: // vid -> vid
+ {
+ u32 sx = list_s16[2] & 0x3FF;
+ u32 sy = list_s16[3] & 0x1FF;
+ u32 dx = list_s16[4] & 0x3FF;
+ u32 dy = list_s16[5] & 0x1FF;
+ u32 w = ((list_s16[6] - 1) & 0x3FF) + 1;
+ u32 h = ((list_s16[7] - 1) & 0x1FF) + 1;
+
+ if (sx == dx && sy == dy && psx_gpu->mask_msb == 0)
+ break;
+
+ render_block_move(psx_gpu, sx, sy, dx, dy, w, h);
+ break;
+ }
+