From: Bartosz Kosiorek gang65@poczta.onet.pl
Improves efficiency by using addition instead of float numbers multiplication for destination points.
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53947 --- dlls/gdiplus/graphics.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/dlls/gdiplus/graphics.c b/dlls/gdiplus/graphics.c index c7a8dcf39f3..d371d78ea8e 100644 --- a/dlls/gdiplus/graphics.c +++ b/dlls/gdiplus/graphics.c @@ -3237,6 +3237,7 @@ GpStatus WINGDIPAPI GdipDrawImagePointsRect(GpGraphics *graphics, GpImage *image GpPointF dst_to_src_points[3] = {{0.0, 0.0}, {1.0, 0.0}, {0.0, 1.0}}; REAL x_dx, x_dy, y_dx, y_dy; ARGB *dst_color; + GpPointF src_pointf_row, src_pointf;
m11 = (ptf[1].X - ptf[0].X) / srcwidth; m21 = (ptf[2].X - ptf[0].X) / srcheight; @@ -3266,16 +3267,21 @@ GpStatus WINGDIPAPI GdipDrawImagePointsRect(GpGraphics *graphics, GpImage *image heap_free(src_data); return OutOfMemory; } - dst_color = (ARGB*)(dst_data); - for (y = dst_area.top; y < dst_area.bottom; y++) + + /* Calculate top left point of transformed image. + It would be used as reference point for adding */ + src_pointf_row.X = dst_to_src_points[0].X + + dst_area.left * x_dx + dst_area.top * y_dx; + src_pointf_row.Y = dst_to_src_points[0].Y + + dst_area.left * x_dy + dst_area.top * y_dy; + + for (y = dst_area.top; y < dst_area.bottom; + y++, src_pointf_row.X += y_dx, src_pointf_row.Y += y_dy) { - for (x = dst_area.left; x < dst_area.right; x++, dst_color += sizeof(ARGB)) + for (x = dst_area.left, src_pointf = src_pointf_row; x < dst_area.right; + x++, src_pointf.X += x_dx, src_pointf.Y += x_dy, dst_color += sizeof(ARGB)) { - GpPointF src_pointf; - src_pointf.X = dst_to_src_points[0].X + x * x_dx + y * y_dx; - src_pointf.Y = dst_to_src_points[0].Y + x * x_dy + y * y_dy; - if (src_pointf.X >= srcx && src_pointf.X < srcx + srcwidth && src_pointf.Y >= srcy && src_pointf.Y < srcy + srcheight) *dst_color = resample_bitmap_pixel(&src_area, src_data, bitmap->width, bitmap->height, &src_pointf,