[PATCH 2/2] gdiplus: Don't clip the HRGN passed to alpha_blend_pixels_hrgn.

[Esme Povirk]

From: Esme Povirk

This is an optimization. Clipping has already been taken care of
by the caller in this case.
---
 dlls/gdiplus/graphics.c | 51 ++++++++++++++++++++++-------------------
 1 file changed, 28 insertions(+), 23 deletions(-)

diff --git a/dlls/gdiplus/graphics.c b/dlls/gdiplus/graphics.c
index 9bc5550d5a6..49a9d453b3d 100644
--- a/dlls/gdiplus/graphics.c
+++ b/dlls/gdiplus/graphics.c
@@ -616,22 +616,24 @@ static GpStatus alpha_blend_pixels_hrgn(GpGraphics *graphics, INT dst_x, INT dst
         if (!hrgn)
             return OutOfMemory;

-        stat = get_clip_hrgn(graphics, &visible_rgn);
-        if (stat != Ok)
+        if (hregion)
+            CombineRgn(hrgn, hrgn, hregion, RGN_AND);
+        else
         {
-            DeleteObject(hrgn);
-            return stat;
-        }
+            stat = get_clip_hrgn(graphics, &visible_rgn);
+            if (stat != Ok)
+            {
+                DeleteObject(hrgn);
+                return stat;
+            }

-        if (visible_rgn)
-        {
-            CombineRgn(hrgn, hrgn, visible_rgn, RGN_AND);
-            DeleteObject(visible_rgn);
+            if (visible_rgn)
+            {
+                CombineRgn(hrgn, hrgn, visible_rgn, RGN_AND);
+                DeleteObject(visible_rgn);
+            }
         }

-        if (hregion)
-            CombineRgn(hrgn, hrgn, hregion, RGN_AND);
-
         size = GetRegionData(hrgn, 0, NULL);

rgndata = malloc(size);
@@ -675,28 +677,31 @@ static GpStatus alpha_blend_pixels_hrgn(GpGraphics *graphics, INT dst_x, INT dst
         if (stat != Ok)
             return stat;

-        stat = get_clip_hrgn(graphics, &hrgn);
+        save = SaveDC(hdc);

-        if (stat != Ok)
+        if (hregion)
+            ExtSelectClipRgn(hdc, hregion, RGN_COPY);
+        else
         {
-            gdi_dc_release(graphics, hdc);
-            return stat;
-        }
+            stat = get_clip_hrgn(graphics, &hrgn);

-        save = SaveDC(hdc);
+            if (stat != Ok)
+            {
+                RestoreDC(hdc, save);
+                gdi_dc_release(graphics, hdc);
+                return stat;
+            }

-        ExtSelectClipRgn(hdc, hrgn, RGN_COPY);
+            ExtSelectClipRgn(hdc, hrgn, RGN_COPY);

-        if (hregion)
-            ExtSelectClipRgn(hdc, hregion, RGN_AND);
+            DeleteObject(hrgn);
+        }

stat = alpha_blend_hdc_pixels(graphics, dst_x, dst_y, src, src_width,
             src_height, src_stride, fmt);

RestoreDC(hdc, save);

-        DeleteObject(hrgn);
-
         gdi_dc_release(graphics, hdc);

return stat;