gdiplus: Add some traces for the values of point arguments.

dlls/gdiplus/brush.c

@@ -311,8 +311,8 @@ GpStatus WINGDIPAPI GdipCreateLineBrush(GDIPCONST GpPointF* startpoint,
 {
     COLORREF col = ARGB2COLORREF(startcolor);
 
-    TRACE("(%p, %p, %x, %x, %d, %p)\n", startpoint, endpoint,
-          startcolor, endcolor, wrap, line);
+    TRACE("(%s, %s, %x, %x, %d, %p)\n", debugstr_pointf(startpoint),
+          debugstr_pointf(endpoint), startcolor, endcolor, wrap, line);
 
     if(!line || !startpoint || !endpoint || wrap == WrapModeClamp)
         return InvalidParameter;
@@ -1448,7 +1448,7 @@ GpStatus WINGDIPAPI GdipSetPathGradientCenterColor(GpPathGradient *grad,
 GpStatus WINGDIPAPI GdipSetPathGradientCenterPoint(GpPathGradient *grad,
     GpPointF *point)
 {
-    TRACE("(%p, %p)\n", grad, point);
+    TRACE("(%p, %s)\n", grad, debugstr_pointf(point));
 
     if(!grad || !point)
         return InvalidParameter;

dlls/gdiplus/gdiplus.c

@@ -444,3 +444,9 @@ const char *debugstr_rectf(CONST RectF* rc)
     if (!rc) return "(null)";
     return wine_dbg_sprintf("(%0.2f,%0.2f,%0.2f,%0.2f)", rc->X, rc->Y, rc->Width, rc->Height);
 }
+
+const char *debugstr_pointf(CONST PointF* pt)
+{
+    if (!pt) return "(null)";
+    return wine_dbg_sprintf("(%0.2f,%0.2f)", pt->X, pt->Y);
+}

dlls/gdiplus/gdiplus_private.h

@@ -80,6 +80,8 @@ static inline REAL deg2rad(REAL degrees)
 
 extern const char *debugstr_rectf(CONST RectF* rc);
 
+extern const char *debugstr_pointf(CONST PointF* pt);
+
 extern void convert_32bppARGB_to_32bppPARGB(UINT width, UINT height,
     BYTE *dst_bits, INT dst_stride, const BYTE *src_bits, INT src_stride);
 

dlls/gdiplus/graphics.c

@@ -1876,6 +1876,9 @@ GpStatus WINGDIPAPI GdipDrawImagePointsRect(GpGraphics *graphics, GpImage *image
     if(!graphics || !image || !points || count != 3)
          return InvalidParameter;
 
+    TRACE("%s %s %s\n", debugstr_pointf(&points[0]), debugstr_pointf(&points[1]),
+        debugstr_pointf(&points[2]));
+
     memcpy(ptf, points, 3 * sizeof(GpPointF));
     transform_and_round_points(graphics, pti, ptf, 3);