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ddraw/tests: Add a test for YV12 partial block locks and lock offsets.

This commit is contained in:
Stefan Dösinger 2011-10-13 21:44:27 +02:00 committed by Alexandre Julliard
parent b078248120
commit a9c72d8772
1 changed files with 18 additions and 1 deletions
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19
dlls/ddraw/tests/overlay.c
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@ -1,7 +1,7 @@
/*
* Unit tests for DirectDraw overlay functions
*
* Copyright (C) 2008 Stefan Dösinger for CodeWeavers
* Copyright (C) 2008,2011 Stefan Dösinger for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -195,6 +195,9 @@ static void yv12_test(void)
HRESULT hr;
DDSURFACEDESC2 desc;
IDirectDrawSurface7 *surface;
char *base;
RECT rect = {13, 17, 14, 18};
unsigned int offset;
surface = create_overlay(256, 256, MAKEFOURCC('Y','V','1','2'));
if(!surface) {
@ -217,6 +220,20 @@ static void yv12_test(void)
/* The overlay pitch seems to have 256 byte alignment */
ok((U1(desc).lPitch & 0xff) == 0, "Expected 256 byte aligned pitch, got %u\n", U1(desc).lPitch);
base = desc.lpSurface;
hr = IDirectDrawSurface7_Unlock(surface, NULL);
ok(hr == DD_OK, "IDirectDrawSurface7_Unlock returned 0x%08x, expected DD_OK\n", hr);
/* YV12 uses 2x2 blocks with 6 bytes per block(4*Y, 1*U, 1*V). Unlike other block-based formats like DXT
* the entire Y channel is stored in one big chunk of memory, followed by the chroma channels. So
* partial locks do not really make sense. Show that they are allowed nevertheless and the offset points
* into the luminance data */
hr = IDirectDrawSurface7_Lock(surface, &rect, &desc, 0, NULL);
ok(hr == DD_OK, "Partial lock of a YV12 surface returned 0x%08x, expected DD_OK\n", hr);
offset = ((const char *) desc.lpSurface - base);
ok(offset == rect.top * U1(desc).lPitch + rect.left, "Expected %u byte offset from partial lock, got %u\n",
rect.top * U1(desc).lPitch + rect.left, offset);
hr = IDirectDrawSurface7_Unlock(surface, NULL);
ok(hr == DD_OK, "IDirectDrawSurface7_Unlock returned 0x%08x, expected DD_OK\n", hr);