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Issue 11464017: Separate image processing logic from presentation logic. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Make tests pass on Intel Mobile 965 Created 8 years ago
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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include <d3d9.h>
6 #include <random>
7
8 #include "base/basictypes.h"
9 #include "base/hash.h"
10 #include "base/scoped_native_library.h"
11 #include "base/stringprintf.h"
12 #include "base/win/scoped_comptr.h"
13 #include "base/win/windows_version.h"
14 #include "testing/gtest/include/gtest/gtest-param-test.h"
15 #include "testing/gtest/include/gtest/gtest.h"
16 #include "ui/gfx/rect.h"
17 #include "ui/surface/accelerated_surface_transformer_win.h"
18 #include "ui/surface/accelerated_surface_win.h"
19 #include "ui/surface/d3d9_utils_win.h"
20
21 namespace d3d_utils = ui_surface_d3d9_utils;
22
23 using base::win::ScopedComPtr;
24 using std::uniform_int_distribution;
25
26 // Provides a reference rasterizer (all rendering done by software emulation)
27 // Direct3D device, for use by unit tests.
28 //
29 // This class is parameterized so that it runs only on Vista+. See
30 // WindowsVersionIfVistaOrBetter() for details on this works.
31 class AcceleratedSurfaceTransformerTest : public testing::TestWithParam<int> {
32 public:
33 AcceleratedSurfaceTransformerTest() {};
34
35 IDirect3DDevice9Ex* device() { return device_.get(); }
36
37 virtual void SetUp() {
38 if (!d3d_module_.is_valid()) {
39 if (!d3d_utils::LoadD3D9(&d3d_module_)) {
40 GTEST_FAIL() << "Could not load d3d9.dll";
41 return;
42 }
43 }
44 if (!d3d_utils::CreateDevice(d3d_module_,
45 D3DDEVTYPE_HAL,
46 D3DPRESENT_INTERVAL_IMMEDIATE,
47 device_.Receive())) {
48 GTEST_FAIL() << "Could not create Direct3D device.";
49 return;
50 }
51
52 SeedRandom("default");
53 }
54
55 virtual void TearDown() {
56 device_ = NULL;
57 }
58
59 // Gets a human-readable identifier of the graphics hardware being used,
60 // intended for use inside of SCOPED_TRACE().
61 std::string GetAdapterInfo() {
62 ScopedComPtr<IDirect3D9> d3d;
63 EXPECT_HRESULT_SUCCEEDED(device()->GetDirect3D(d3d.Receive()));
64 D3DADAPTER_IDENTIFIER9 info;
65 EXPECT_HRESULT_SUCCEEDED(d3d->GetAdapterIdentifier(0, 0, &info));
66 return StringPrintf("Running on graphics hardware: %s", info.Description);
67 }
68
69 void SeedRandom(const char* seed) {
70 rng_.seed(base::Hash(seed));
71 random_dword_.reset();
72 }
73
74 // Driver workaround: on an Intel GPU (Mobile Intel 965 Express), it seems
75 // necessary to flush between drawing and locking, for the synchronization
76 // to behave properly.
77 void BeforeLockWorkaround() {
78 EXPECT_HRESULT_SUCCEEDED(
79 device()->Present(0, 0, 0, 0));
apatrick_chromium 2013/01/02 20:45:58 Eek! Have you considered using a reference device
ncarter (slow) 2013/01/02 23:35:21 Using a reference device was my original intent wh
80 }
81
82 // Locks and fills a surface with a checkerboard pattern where the colors
83 // are random but the total image pattern is horizontally and vertically
84 // symmetric.
85 void FillSymmetricRandomCheckerboard(
86 IDirect3DSurface9* lockable_surface,
87 const gfx::Size& size,
88 int checker_square_size) {
89
90 D3DLOCKED_RECT locked_rect;
91 ASSERT_HRESULT_SUCCEEDED(
92 lockable_surface->LockRect(&locked_rect, NULL, D3DLOCK_DISCARD));
93 DWORD* surface = reinterpret_cast<DWORD*>(locked_rect.pBits);
94 ASSERT_EQ(0, locked_rect.Pitch % sizeof(DWORD));
95 int pitch = locked_rect.Pitch / sizeof(DWORD);
96
97 for (int y = 0; y <= size.height() / 2; y += checker_square_size) {
98 for (int x = 0; x <= size.width() / 2; x += checker_square_size) {
99 DWORD color = RandomColor();
100 int y_limit = std::min(size.height() / 2, y + checker_square_size - 1);
101 int x_limit = std::min(size.width() / 2, x + checker_square_size - 1);
102 for (int y_lo = y; y_lo <= y_limit; y_lo++) {
103 for (int x_lo = x; x_lo <= x_limit; x_lo++) {
104 int y_hi = size.height() - 1 - y_lo;
105 int x_hi = size.width() - 1 - x_lo;
106 surface[x_lo + y_lo*pitch] = color;
107 surface[x_lo + y_hi*pitch] = color;
108 surface[x_hi + y_lo*pitch] = color;
109 surface[x_hi + y_hi*pitch] = color;
110 }
111 }
112 }
113 }
114
115 lockable_surface->UnlockRect();
116 }
117
118 void FillRandomCheckerboard(
119 IDirect3DSurface9* lockable_surface,
120 const gfx::Size& size,
121 int checker_square_size) {
122
123 D3DLOCKED_RECT locked_rect;
124 ASSERT_HRESULT_SUCCEEDED(
125 lockable_surface->LockRect(&locked_rect, NULL, D3DLOCK_DISCARD));
126 DWORD* surface = reinterpret_cast<DWORD*>(locked_rect.pBits);
127 ASSERT_EQ(0, locked_rect.Pitch % sizeof(DWORD));
128 int pitch = locked_rect.Pitch / sizeof(DWORD);
129
130 for (int y = 0; y <= size.height(); y += checker_square_size) {
131 for (int x = 0; x <= size.width(); x += checker_square_size) {
132 DWORD color = RandomColor();
133 int y_limit = std::min(size.height(), y + checker_square_size);
134 int x_limit = std::min(size.width(), x + checker_square_size);
135 for (int square_y = y; square_y < y_limit; square_y++) {
136 for (int square_x = x; square_x < x_limit; square_x++) {
137 surface[square_x + square_y*pitch] = color;
138 }
139 }
140 }
141 }
142
143 lockable_surface->UnlockRect();
144 }
145
146 // Approximate color-equality check. Allows for some rounding error.
147 bool AssertSameColor(DWORD color_a, DWORD color_b) {
148 if (color_a == color_b)
149 return true;
150 uint8* a = reinterpret_cast<uint8*>(&color_a);
151 uint8* b = reinterpret_cast<uint8*>(&color_b);
152 int max_error = 0;
153 for (int i = 0; i < 4; i++)
154 max_error = std::max(max_error,
155 std::abs(static_cast<int>(a[i]) - b[i]));
156
157 if (max_error <= kAbsoluteColorErrorTolerance)
158 return true;
159
160 std::string expected_color =
161 StringPrintf("%3d, %3d, %3d, %3d", a[0], a[1], a[2], a[3]);
162 std::string actual_color =
163 StringPrintf("%3d, %3d, %3d, %3d", b[0], b[1], b[2], b[3]);
164 EXPECT_EQ(expected_color, actual_color)
165 << "Componentwise color difference was "
166 << max_error << "; max allowed is " << kAbsoluteColorErrorTolerance;
167
168 return false;
169 }
170
171 // Asserts that an image is symmetric with respect to itself: both
172 // horizontally and vertically, within the tolerance of AssertSameColor.
173 void AssertSymmetry(IDirect3DSurface9* lockable_surface,
174 const gfx::Size& size) {
175 BeforeLockWorkaround();
176
177 D3DLOCKED_RECT locked_rect;
178 ASSERT_HRESULT_SUCCEEDED(
179 lockable_surface->LockRect(&locked_rect, NULL, D3DLOCK_READONLY));
180 ASSERT_EQ(0, locked_rect.Pitch % sizeof(DWORD));
181 int pitch = locked_rect.Pitch / sizeof(DWORD);
182 DWORD* surface = reinterpret_cast<DWORD*>(locked_rect.pBits);
183 for (int y_lo = 0; y_lo < size.height() / 2; y_lo++) {
184 int y_hi = size.height() - 1 - y_lo;
185 for (int x_lo = 0; x_lo < size.width() / 2; x_lo++) {
186 int x_hi = size.width() - 1 - x_lo;
187 if (!AssertSameColor(surface[x_lo + y_lo*pitch],
188 surface[x_hi + y_lo*pitch])) {
189 lockable_surface->UnlockRect();
190 GTEST_FAIL() << "Pixels (" << x_lo << ", " << y_lo << ") vs. "
191 << "(" << x_hi << ", " << y_lo << ")";
192 }
193 if (!AssertSameColor(surface[x_hi + y_lo*pitch],
194 surface[x_hi + y_hi*pitch])) {
195 lockable_surface->UnlockRect();
196 GTEST_FAIL() << "Pixels (" << x_hi << ", " << y_lo << ") vs. "
197 << "(" << x_hi << ", " << y_hi << ")";
198 }
199 if (!AssertSameColor(surface[x_hi + y_hi*pitch],
200 surface[x_lo + y_hi*pitch])) {
201 lockable_surface->UnlockRect();
202 GTEST_FAIL() << "Pixels (" << x_hi << ", " << y_hi << ") vs. "
203 << "(" << x_lo << ", " << y_hi << ")";
204 }
205 }
206 }
207 lockable_surface->UnlockRect();
208 }
209
210 // Asserts that the actual image is a bit-identical, vertically mirrored
211 // copy of the expected image.
212 void AssertIsInvertedCopy(const gfx::Size& size,
213 IDirect3DSurface9* expected,
214 IDirect3DSurface9* actual) {
215 BeforeLockWorkaround();
216
217 D3DLOCKED_RECT locked_expected, locked_actual;
218 ASSERT_HRESULT_SUCCEEDED(
219 expected->LockRect(&locked_expected, NULL, D3DLOCK_READONLY));
220 ASSERT_HRESULT_SUCCEEDED(
221 actual->LockRect(&locked_actual, NULL, D3DLOCK_READONLY));
222 ASSERT_EQ(0, locked_expected.Pitch % sizeof(DWORD));
223 int pitch = locked_expected.Pitch / sizeof(DWORD);
224 DWORD* expected_image = reinterpret_cast<DWORD*>(locked_expected.pBits);
225 DWORD* actual_image = reinterpret_cast<DWORD*>(locked_actual.pBits);
226 for (int y = 0; y < size.height(); y++) {
227 int y_actual = size.height() - 1 - y;
228 for (int x = 0; x < size.width(); ++x)
229 if (!AssertSameColor(expected_image[y*pitch + x],
230 actual_image[y_actual*pitch + x])) {
231 expected->UnlockRect();
232 actual->UnlockRect();
233 GTEST_FAIL() << "Pixels (" << x << ", " << y << ") vs. "
234 << "(" << x << ", " << y_actual << ")";
235 }
236 }
237 expected->UnlockRect();
238 actual->UnlockRect();
239 }
240
241 protected:
242 static const int kAbsoluteColorErrorTolerance = 5;
243
244 DWORD RandomColor() {
245 return random_dword_(rng_);
246 }
247
248 void DoResizeBilinearTest(AcceleratedSurfaceTransformer* gpu_ops,
249 const gfx::Size& src_size,
250 const gfx::Size& dst_size,
251 int checkerboard_size) {
252
253 SCOPED_TRACE(
254 StringPrintf("Resizing %dx%d -> %dx%d at checkerboard size of %d",
255 src_size.width(), src_size.height(),
256 dst_size.width(), dst_size.height(),
257 checkerboard_size));
258
259 base::win::ScopedComPtr<IDirect3DSurface9> src, dst;
260 ASSERT_TRUE(d3d_utils::CreateTemporaryLockableSurface(
261 device(), src_size, src.Receive()))
262 << "Could not create src render target";
263 ASSERT_TRUE(d3d_utils::CreateTemporaryLockableSurface(
264 device(), dst_size, dst.Receive()))
265 << "Could not create dst render target";
266
267 FillSymmetricRandomCheckerboard(src, src_size, checkerboard_size);
268
269 ASSERT_TRUE(gpu_ops->ResizeBilinear(src, gfx::Rect(src_size), dst));
270
271 AssertSymmetry(dst, dst_size);
272 }
273
274 void DoCopyInvertedTest(AcceleratedSurfaceTransformer* gpu_ops,
275 const gfx::Size& size) {
276
277 SCOPED_TRACE(
278 StringPrintf("CopyInverted @ %dx%d", size.width(), size.height()));
279
280 base::win::ScopedComPtr<IDirect3DSurface9> checkerboard, src, dst;
281 base::win::ScopedComPtr<IDirect3DTexture9> src_texture;
282 ASSERT_TRUE(d3d_utils::CreateTemporaryLockableSurface(device(), size,
283 checkerboard.Receive())) << "Could not create src render target";;
284 ASSERT_TRUE(d3d_utils::CreateTemporaryRenderTargetTexture(device(), size,
285 src_texture.Receive(), src.Receive()))
286 << "Could not create src texture.";
287 ASSERT_TRUE(d3d_utils::CreateTemporaryLockableSurface(device(), size,
288 dst.Receive())) << "Could not create dst render target.";
289
290 FillRandomCheckerboard(checkerboard, size, 1);
291 ASSERT_HRESULT_SUCCEEDED(
292 device()->StretchRect(checkerboard, NULL, src, NULL, D3DTEXF_NONE));
293 ASSERT_TRUE(gpu_ops->CopyInverted(src_texture, dst, size));
294 AssertIsInvertedCopy(size, checkerboard, dst);
295 }
296
297 uniform_int_distribution<DWORD> random_dword_;
298 std::mt19937 rng_;
299 base::ScopedNativeLibrary d3d_module_;
300 base::win::ScopedComPtr<IDirect3DDevice9Ex> device_;
301 };
302
303 // Fails on some bots because Direct3D isn't allowed.
304 TEST_P(AcceleratedSurfaceTransformerTest, FAILS_Init) {
305 SCOPED_TRACE(GetAdapterInfo());
306 AcceleratedSurfaceTransformer gpu_ops;
307 ASSERT_TRUE(gpu_ops.Init(device()));
308 };
309
310 // Fails on some bots because Direct3D isn't allowed.
311 TEST_P(AcceleratedSurfaceTransformerTest, FAILS_TestConsistentRandom) {
312 // This behavior should be the same for every execution on every machine.
313 // Otherwise tests might be flaky and impossible to debug.
314 SeedRandom("AcceleratedSurfaceTransformerTest.TestConsistentRandom");
315 ASSERT_EQ(2922058934, RandomColor());
316
317 SeedRandom("AcceleratedSurfaceTransformerTest.TestConsistentRandom");
318 ASSERT_EQ(2922058934, RandomColor());
319 ASSERT_EQ(4050239976, RandomColor());
320
321 SeedRandom("DifferentSeed");
322 ASSERT_EQ(3904108833, RandomColor());
323 }
324
325 // Fails on some bots because Direct3D isn't allowed.
326 TEST_P(AcceleratedSurfaceTransformerTest, FAILS_CopyInverted) {
327 // This behavior should be the same for every execution on every machine.
328 // Otherwise tests might be flaky and impossible to debug.
329 SCOPED_TRACE(GetAdapterInfo());
330 SeedRandom("CopyInverted");
331
332 AcceleratedSurfaceTransformer t;
333 ASSERT_TRUE(t.Init(device()));
334
335 uniform_int_distribution<int> size(1, 512);
336
337 for (int i = 0; i < 100; ++i) {
338 ASSERT_NO_FATAL_FAILURE(
339 DoCopyInvertedTest(&t, gfx::Size(size(rng_), size(rng_))))
340 << "At iteration " << i;
341 }
342 }
343
344
345 // Fails on some bots because Direct3D isn't allowed.
346 // Fails on other bots because of ResizeBilinear symmetry failures.
347 // Should pass, at least, on NVIDIA Quadro 600.
348 TEST_P(AcceleratedSurfaceTransformerTest, FAILS_MixedOperations) {
349 SCOPED_TRACE(GetAdapterInfo());
350 SeedRandom("MixedOperations");
351
352 AcceleratedSurfaceTransformer t;
353 ASSERT_TRUE(t.Init(device()));
354
355 ASSERT_NO_FATAL_FAILURE(
356 DoResizeBilinearTest(&t, gfx::Size(256, 256), gfx::Size(255, 255), 1));
357 ASSERT_NO_FATAL_FAILURE(
358 DoResizeBilinearTest(&t, gfx::Size(256, 256), gfx::Size(255, 255), 2));
359 ASSERT_NO_FATAL_FAILURE(
360 DoCopyInvertedTest(&t, gfx::Size(20, 107)));
361 ASSERT_NO_FATAL_FAILURE(
362 DoResizeBilinearTest(&t, gfx::Size(256, 256), gfx::Size(255, 255), 5));
363 ASSERT_NO_FATAL_FAILURE(
364 DoResizeBilinearTest(&t, gfx::Size(256, 256), gfx::Size(64, 64), 5));
365 ASSERT_NO_FATAL_FAILURE(
366 DoResizeBilinearTest(&t, gfx::Size(255, 255), gfx::Size(3, 3), 1));
367 ASSERT_NO_FATAL_FAILURE(
368 DoCopyInvertedTest(&t, gfx::Size(1412, 124)));
369 ASSERT_NO_FATAL_FAILURE(
370 DoResizeBilinearTest(&t, gfx::Size(255, 255), gfx::Size(257, 257), 1));
371 ASSERT_NO_FATAL_FAILURE(
372 DoResizeBilinearTest(&t, gfx::Size(255, 255), gfx::Size(257, 257), 2));
373
374 ASSERT_NO_FATAL_FAILURE(
375 DoCopyInvertedTest(&t, gfx::Size(1512, 7)));
376 ASSERT_NO_FATAL_FAILURE(
377 DoResizeBilinearTest(&t, gfx::Size(255, 255), gfx::Size(257, 257), 5));
378 ASSERT_NO_FATAL_FAILURE(
379 DoResizeBilinearTest(&t, gfx::Size(150, 256), gfx::Size(126, 256), 8));
380 ASSERT_NO_FATAL_FAILURE(
381 DoCopyInvertedTest(&t, gfx::Size(1521, 3)));
382 ASSERT_NO_FATAL_FAILURE(
383 DoResizeBilinearTest(&t, gfx::Size(150, 256), gfx::Size(126, 256), 1));
384 ASSERT_NO_FATAL_FAILURE(
385 DoCopyInvertedTest(&t, gfx::Size(33, 712)));
386 ASSERT_NO_FATAL_FAILURE(
387 DoResizeBilinearTest(&t, gfx::Size(150, 256), gfx::Size(126, 8), 8));
388 ASSERT_NO_FATAL_FAILURE(
389 DoCopyInvertedTest(&t, gfx::Size(33, 2)));
390 ASSERT_NO_FATAL_FAILURE(
391 DoResizeBilinearTest(&t, gfx::Size(200, 256), gfx::Size(126, 8), 8));
392 }
393
394 // Tests ResizeBilinear with 16K wide/hight src and dst surfaces.
395 //
396 // Fails on some bots because Direct3D isn't allowed.
397 // Fails on other bots because of texture allocation failures.
398 // Should pass, at least, on NVIDIA Quadro 600.
399 TEST_P(AcceleratedSurfaceTransformerTest, FAILS_LargeSurfaces) {
400 SCOPED_TRACE(GetAdapterInfo());
401 SeedRandom("LargeSurfaces");
402
403 AcceleratedSurfaceTransformer gpu_ops;
404 ASSERT_TRUE(gpu_ops.Init(device()));
405
406 D3DCAPS9 caps;
407 ASSERT_HRESULT_SUCCEEDED(
408 device()->GetDeviceCaps(&caps));
409
410 SCOPED_TRACE(StringPrintf("max texture size: %dx%d, max texture aspect: %d",
411 caps.MaxTextureWidth, caps.MaxTextureHeight, caps.MaxTextureAspectRatio));
412
413 const int w = caps.MaxTextureWidth;
414 const int h = caps.MaxTextureHeight;
415 const int lo = 256;
416
417 ASSERT_NO_FATAL_FAILURE(
418 DoResizeBilinearTest(&gpu_ops, gfx::Size(w, lo), gfx::Size(lo, lo), 1));
419 ASSERT_NO_FATAL_FAILURE(
420 DoResizeBilinearTest(&gpu_ops, gfx::Size(lo, h), gfx::Size(lo, lo), 1));
421 ASSERT_NO_FATAL_FAILURE(
422 DoResizeBilinearTest(&gpu_ops, gfx::Size(lo, lo), gfx::Size(w, lo), lo));
423 ASSERT_NO_FATAL_FAILURE(
424 DoResizeBilinearTest(&gpu_ops, gfx::Size(lo, lo), gfx::Size(lo, h), lo));
425 ASSERT_NO_FATAL_FAILURE(
426 DoCopyInvertedTest(&gpu_ops, gfx::Size(w, lo)));
427 ASSERT_NO_FATAL_FAILURE(
428 DoCopyInvertedTest(&gpu_ops, gfx::Size(lo, h)));
429 }
430
431 // Exercises ResizeBilinear with random minification cases where the
432 // aspect ratio does not change.
433 //
434 // Fails on some bots because Direct3D isn't allowed.
435 // Fails on other bots because of ResizeBilinear symmetry failures.
436 // Should pass, at least, on NVIDIA Quadro 600.
437 TEST_P(AcceleratedSurfaceTransformerTest, FAILS_MinifyUniform) {
438 SCOPED_TRACE(GetAdapterInfo());
439 SeedRandom("MinifyUniform");
440
441 AcceleratedSurfaceTransformer gpu_ops;
442 ASSERT_TRUE(gpu_ops.Init(device()));
443
444 int dims[] = { 21, 63, 64, 65, 99, 127, 128, 129, 192, 255, 256, 257};
445 int checkerboards[] = {1, 2, 3, 9};
446 uniform_int_distribution<int> dim(0, arraysize(dims) - 1);
447 uniform_int_distribution<int> checkerboard(0, arraysize(checkerboards) - 1);
448
449 for (int i = 0; i < 300; i++) {
450 // Widths are picked so that dst is smaller than src.
451 int dst_width = dims[dim(rng_)];
452 int src_width = dims[dim(rng_)];
453 if (src_width < dst_width)
454 std::swap(dst_width, src_width);
455
456 // src_width is picked to preserve aspect ratio.
457 int dst_height = dims[dim(rng_)];
458 int src_height = static_cast<int>(
459 static_cast<int64>(src_width) * dst_height / dst_width);
460
461 int checkerboard_size = checkerboards[checkerboard(rng_)];
462
463 ASSERT_NO_FATAL_FAILURE(
464 DoResizeBilinearTest(&gpu_ops,
465 gfx::Size(src_width, src_height), // Src size (larger)
466 gfx::Size(dst_width, dst_height), // Dst size (smaller)
467 checkerboard_size)) << "Failed on iteration " << i;
468 }
469 };
470
471 // Exercises ResizeBilinear with random magnification cases where the
472 // aspect ratio does not change.
473 //
474 // This test relies on an assertion that resizing preserves symmetry in the
475 // image, but for the current implementation of ResizeBilinear, this does not
476 // seem to be true (fails on NVIDIA Quadro 600; passes on
477 // Intel Mobile 965 Express)
478 TEST_P(AcceleratedSurfaceTransformerTest, FAILS_MagnifyUniform) {
479 SCOPED_TRACE(GetAdapterInfo());
480 SeedRandom("MagnifyUniform");
481
482 AcceleratedSurfaceTransformer gpu_ops;
483 ASSERT_TRUE(gpu_ops.Init(device()));
484
485 int dims[] = {63, 64, 65, 99, 127, 128, 129, 192, 255, 256, 257};
486 int checkerboards[] = {1, 2, 3, 9};
487 uniform_int_distribution<int> dim(0, arraysize(dims) - 1);
488 uniform_int_distribution<int> checkerboard(0, arraysize(checkerboards) - 1);
489
490 for (int i = 0; i < 50; i++) {
491 // Widths are picked so that b is smaller than a.
492 int dst_width = dims[dim(rng_)];
493 int src_width = dims[dim(rng_)];
494 if (dst_width < src_width)
495 std::swap(src_width, dst_width);
496
497 int dst_height = dims[dim(rng_)];
498 int src_height = static_cast<int>(
499 static_cast<int64>(src_width) * dst_height / dst_width);
500
501 int checkerboard_size = checkerboards[checkerboard(rng_)];
502
503 ASSERT_NO_FATAL_FAILURE(
504 DoResizeBilinearTest(&gpu_ops,
505 gfx::Size(src_width, src_height), // Src size (smaller)
506 gfx::Size(dst_width, dst_height), // Dst size (larger)
507 checkerboard_size)) << "Failed on iteration " << i;
508 }
509 };
510
511 namespace {
512
513 // Used to suppress test on Windows versions prior to Vista.
514 std::vector<int> WindowsVersionIfVistaOrBetter() {
515 std::vector<int> result;
516 if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
517 result.push_back(base::win::GetVersion());
518 }
519 return result;
520 }
521
522 } // namespace
523
524 INSTANTIATE_TEST_CASE_P(VistaAndUp,
525 AcceleratedSurfaceTransformerTest,
526 ::testing::ValuesIn(WindowsVersionIfVistaOrBetter()));
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