Both supported ROPs follow the same memory set dirty logic.
This consolidates that logic to remove the duplication.

Signed-off-by: Chad Jablonski <chad@jablonski.xyz>
---
 hw/display/ati_2d.c | 42 +++++++++++++++++++++---------------------
 1 file changed, 21 insertions(+), 21 deletions(-)

diff --git a/hw/display/ati_2d.c b/hw/display/ati_2d.c
index cfc7bf9789..980cdd6ac0 100644
--- a/hw/display/ati_2d.c
+++ b/hw/display/ati_2d.c
@@ -43,15 +43,28 @@ static int ati_bpp_from_datatype(ATIVGAState *s)
     }
 }
 
+static void ati_set_dirty(ATIVGAState *s,
+                          const uint8_t *dst_bits, unsigned dst_y)
+{
+    VGACommonState *vga = &s->vga;
+    DisplaySurface *ds = qemu_console_surface(vga->con);
+
+    DPRINTF("%p %u ds: %p %d %d rop: %x\n", vga->vram_ptr, vga->vbe_start_addr,
+            surface_data(ds), surface_stride(ds), surface_bits_per_pixel(ds),
+            (s->regs.dp_mix & GMC_ROP3_MASK) >> 16);
+    if (dst_bits >= vga->vram_ptr + vga->vbe_start_addr &&
+        dst_bits < vga->vram_ptr + vga->vbe_start_addr +
+        vga->vbe_regs[VBE_DISPI_INDEX_YRES] * vga->vbe_line_offset) {
+        memory_region_set_dirty(&vga->vram, vga->vbe_start_addr +
+                                s->regs.dst_offset + dst_y * surface_stride(ds),
+                                s->regs.dst_height * surface_stride(ds));
+    }
+}
+
 void ati_2d_blt(ATIVGAState *s)
 {
     /* FIXME it is probably more complex than this and may need to be */
     /* rewritten but for now as a start just to get some output: */
-    DisplaySurface *ds = qemu_console_surface(s->vga.con);
-    DPRINTF("%p %u ds: %p %d %d rop: %x\n", s->vga.vram_ptr,
-            s->vga.vbe_start_addr, surface_data(ds), surface_stride(ds),
-            surface_bits_per_pixel(ds),
-            (s->regs.dp_mix & GMC_ROP3_MASK) >> 16);
     unsigned dst_x = (s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT ?
                       s->regs.dst_x : s->regs.dst_x + 1 - s->regs.dst_width);
     unsigned dst_y = (s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM ?
@@ -166,14 +179,6 @@ void ati_2d_blt(ATIVGAState *s)
                 memmove(&dst_bits[i], &src_bits[j], s->regs.dst_width * bypp);
             }
         }
-        if (dst_bits >= s->vga.vram_ptr + s->vga.vbe_start_addr &&
-            dst_bits < s->vga.vram_ptr + s->vga.vbe_start_addr +
-            s->vga.vbe_regs[VBE_DISPI_INDEX_YRES] * s->vga.vbe_line_offset) {
-            memory_region_set_dirty(&s->vga.vram, s->vga.vbe_start_addr +
-                                    s->regs.dst_offset +
-                                    dst_y * surface_stride(ds),
-                                    s->regs.dst_height * surface_stride(ds));
-        }
         break;
     }
     case ROP3_PATCOPY:
@@ -216,18 +221,13 @@ void ati_2d_blt(ATIVGAState *s)
                 }
             }
         }
-        if (dst_bits >= s->vga.vram_ptr + s->vga.vbe_start_addr &&
-            dst_bits < s->vga.vram_ptr + s->vga.vbe_start_addr +
-            s->vga.vbe_regs[VBE_DISPI_INDEX_YRES] * s->vga.vbe_line_offset) {
-            memory_region_set_dirty(&s->vga.vram, s->vga.vbe_start_addr +
-                                    s->regs.dst_offset +
-                                    dst_y * surface_stride(ds),
-                                    s->regs.dst_height * surface_stride(ds));
-        }
         break;
     }
     default:
         qemu_log_mask(LOG_UNIMP, "Unimplemented ati_2d blt op %x\n",
                       (s->regs.dp_mix & GMC_ROP3_MASK) >> 16);
+        return;
     }
+
+    ati_set_dirty(s, dst_bits, dst_y);
 }
-- 
2.52.0