[reactos] 01/01: [GDI32_APITEST] Create StretchBlt Regression Test (#3109)

[Doug Lyons]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=e06ec0a594ab413ca1699…

commit e06ec0a594ab413ca1699edf6130bf24f55762ca
Author:     Doug Lyons <douglyons(a)douglyons.com>
AuthorDate: Thu Sep 10 11:15:12 2020 -0500
Commit:     GitHub <noreply(a)github.com>
CommitDate: Thu Sep 10 18:15:12 2020 +0200

    [GDI32_APITEST] Create StretchBlt Regression Test (#3109)
    
    * Add gdi32_apitest:StretchBlt regression test.
    * Give Wine proper credit for base code.
---
 modules/rostests/apitests/gdi32/CMakeLists.txt |   1 +
 modules/rostests/apitests/gdi32/StretchBlt.c   | 108 +++++++++++++++++++++++++
 modules/rostests/apitests/gdi32/testlist.c     |   2 +
 3 files changed, 111 insertions(+)

diff --git a/modules/rostests/apitests/gdi32/CMakeLists.txt
b/modules/rostests/apitests/gdi32/CMakeLists.txt
index 432e7e719f0..27bd589e2b4 100644
--- a/modules/rostests/apitests/gdi32/CMakeLists.txt
+++ b/modules/rostests/apitests/gdi32/CMakeLists.txt
@@ -74,6 +74,7 @@ list(APPEND SOURCE
     SetSysColors.c
     SetWindowExtEx.c
     SetWorldTransform.c
+    StretchBlt.c
     TextTransform.c
     init.c)
 
diff --git a/modules/rostests/apitests/gdi32/StretchBlt.c
b/modules/rostests/apitests/gdi32/StretchBlt.c
new file mode 100644
index 00000000000..c72f9e220f1
--- /dev/null
+++ b/modules/rostests/apitests/gdi32/StretchBlt.c
@@ -0,0 +1,108 @@
+/*
+ * PROJECT:     ReactOS API tests
+ * LICENSE:     GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
+ * PURPOSE:     Tests for the StretchBlt API
+ * COPYRIGHT:   Copyright 2020 Doug Lyons (douglyons at douglyons dot com)
+ *              Most Code copied and modified from Wine gdi32:bitmap test.
+ */
+
+#include <stdarg.h>
+#include <assert.h>
+#include <string.h>
+
+#include "ntstatus.h"
+#define WIN32_NO_STATUS
+#include "windef.h"
+#include "winbase.h"
+#include "winerror.h"
+#include "wingdi.h"
+#include "winuser.h"
+#include "wine/test.h"
+
+static void test_StretchBlt(void)
+{
+    HBITMAP bmpDst, bmpSrc;
+    HDC hdcDst, hdcSrc;
+    UINT32 *dstBuffer, *srcBuffer;
+    BITMAPINFO biDst, biSrc;
+    UINT32 expected[256];
+
+    memset(&biDst, 0, sizeof(BITMAPINFO));
+
+    biDst.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+    biDst.bmiHeader.biWidth = 2;
+    biDst.bmiHeader.biHeight = 2;    // Set our Height to positive so we are bottom-up
+    biDst.bmiHeader.biPlanes = 1;
+    biDst.bmiHeader.biBitCount = 32; // Set our BitCount to 32 which is Full Color
+    biDst.bmiHeader.biCompression = BI_RGB;
+
+    memcpy(&biSrc, &biDst, sizeof(BITMAPINFO)); // Put same Destination params
into the Source
+
+    hdcDst = CreateCompatibleDC(0);
+    hdcSrc = CreateCompatibleDC(0);
+
+    bmpSrc = CreateDIBSection(hdcSrc, &biSrc, DIB_RGB_COLORS, (void**)&srcBuffer,
NULL, 0);
+    SelectObject(hdcSrc, bmpSrc);
+    bmpDst = CreateDIBSection(hdcDst, &biDst, DIB_RGB_COLORS, (void**)&dstBuffer,
NULL, 0);
+    SelectObject(hdcDst, bmpDst);
+
+    srcBuffer[0] = 0x000000FF; // BLUE - stored beginning bottom left
+    srcBuffer[1] = 0x0000FF00; // GREEN
+    srcBuffer[2] = 0x00FF0000; // RED
+    srcBuffer[3] = 0xFF000000; // BLACK - 0xFF for alpha channel is easy to recognize
when printed in hex format
+
+    /* Flip Left to Right on Source */
+    StretchBlt(hdcDst, 0, 0, 2, 2, hdcSrc, 1, 0, -2, 2, SRCCOPY);
+    expected[0] = 0x0000FF00;
+    expected[1] = 0x000000FF;
+    expected[2] = 0xFF000000;
+    expected[3] = 0x00FF0000;
+
+    ok(expected[1] == dstBuffer[1], "StretchBlt expected { %08X } got { %08X
}\n",
+        expected[1], dstBuffer[1]);
+
+    ok(expected[3] == dstBuffer[3], "StretchBlt expected { %08X } got { %08X
}\n",
+        expected[3], dstBuffer[3]);
+
+    /* Flip Top to Bottom on Source */
+    StretchBlt(hdcDst, 0, 0, 2, 2, hdcSrc, 0, 1, 2, -2, SRCCOPY);
+    expected[0] = 0x00FF0000;
+    expected[1] = 0xFF000000;
+    expected[2] = 0x000000FF;
+    expected[3] = 0x0000FF00;
+
+    ok(expected[0] == dstBuffer[0], "StretchBlt expected { %08X } got { %08X
}\n",
+        expected[0], dstBuffer[0]);
+
+    ok(expected[1] == dstBuffer[1], "StretchBlt expected { %08X } got { %08X
}\n",
+        expected[1], dstBuffer[1]);
+
+    /* Flip Left to Right and Top to Bottom on Source */
+    StretchBlt(hdcDst, 0, 0, 2, 2, hdcSrc, 1, 1, -2, -2, SRCCOPY);
+    expected[0] = 0xFF000000;
+    expected[1] = 0x00FF0000;
+    expected[2] = 0x0000FF00;
+    expected[3] = 0x000000FF;
+
+    ok(expected[1] == dstBuffer[1], "StretchBlt expected { %08X } got { %08X
}\n",
+        expected[1], dstBuffer[1]);
+
+    /* Flip Left to Right and Top to Bottom on both Source and Destination */
+    StretchBlt(hdcDst, 1, 1, -2, -2, hdcSrc, 1, 1, -2, -2, SRCCOPY);
+    expected[0] = 0xFF000000;
+    expected[1] = 0x00FF0000;
+    expected[2] = 0x00FF0000;
+    expected[3] = 0x000000FF;
+
+    ok(expected[1] == dstBuffer[1], "StretchBlt expected { %08X } got { %08X
}\n",
+        expected[1], dstBuffer[1]);
+
+    DeleteDC(hdcSrc);
+    DeleteDC(hdcDst);
+}
+
+
+START_TEST(StretchBlt)
+{
+    test_StretchBlt();
+}
diff --git a/modules/rostests/apitests/gdi32/testlist.c
b/modules/rostests/apitests/gdi32/testlist.c
index 735621c3386..623f530c90c 100644
--- a/modules/rostests/apitests/gdi32/testlist.c
+++ b/modules/rostests/apitests/gdi32/testlist.c
@@ -75,6 +75,7 @@ extern void func_SetPixel(void);
 extern void func_SetSysColors(void);
 extern void func_SetWindowExtEx(void);
 extern void func_SetWorldTransform(void);
+extern void func_StretchBlt(void);
 extern void func_TextTransform(void);
 
 const struct test winetest_testlist[] =
@@ -151,6 +152,7 @@ const struct test winetest_testlist[] =
     { "SetSysColors", func_SetSysColors },
     { "SetWindowExtEx", func_SetWindowExtEx },
     { "SetWorldTransform", func_SetWorldTransform },
+    { "StretchBlt", func_StretchBlt },
     { "TextTransform", func_TextTransform },
 
     { 0, 0 }