[PATCH 1/1] gdiplus: improve performance of GdipScaleMatrix

[Bartosz Kosiorek]

From: Bartosz Kosiorek

---
 dlls/gdiplus/tests/matrix.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/dlls/gdiplus/tests/matrix.c b/dlls/gdiplus/tests/matrix.c
index 5ca0209f6a9..7ae91780192 100644
--- a/dlls/gdiplus/tests/matrix.c
+++ b/dlls/gdiplus/tests/matrix.c
@@ -110,6 +110,38 @@ static void test_transform(void)
     GdipDeleteMatrix(matrix);
 }

+static void test_scale(void)
+{
+    GpStatus status;
+    GpMatrix *matrix = NULL;
+    GpMatrix *expected_matrix = NULL;
+    BOOL equal = FALSE;
+
+    GdipCreateMatrix2(1.0, -2.0, 30.0, 40.0, -500.0, 600.0, &matrix);
+
+    status = GdipScaleMatrix(NULL, 3, 2, MatrixOrderAppend);
+    expect(InvalidParameter, status);
+    status = GdipScaleMatrix(matrix, 3, 2, MatrixOrderAppend);
+    expect(Ok, status);
+
+    GdipCreateMatrix2(3.0, -6.0, 60.0, 80.0, 0.0, 0.0, &expected_matrix);
+    expect(Ok, status);
+    GdipIsMatrixEqual(matrix, expected_matrix, &equal);
+    expect(TRUE, equal);
+    GdipDeleteMatrix(matrix);
+
+    GdipCreateMatrix2(1.0, -2.0, 30.0, 40.0, -500.0, 600.0, &matrix);
+
+    status = GdipScaleMatrix(matrix, 3, 2, MatrixOrderPrepend);
+    expect(Ok, status);
+
+    GdipCreateMatrix2(3.0, -4.0, 90.0, 80.0, -1500.0, 1200.0, &expected_matrix);
+    expect(Ok, status);
+    GdipIsMatrixEqual(matrix, expected_matrix, &equal);
+    expect(TRUE, equal);
+    GdipDeleteMatrix(matrix);
+}
+
 static void test_isinvertible(void)
 {
     GpStatus status;
@@ -390,6 +422,7 @@ START_TEST(matrix)
     GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

test_constructor_destructor();
+    test_scale();
     test_transform();
     test_isinvertible();
     test_invert();