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bsalomon@google.comc6980972011-11-02 19:57:21 +00001/*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
bsalomon@google.comc6980972011-11-02 19:57:21 +00008#include "SkCanvas.h"
Cary Clarka4083c92017-09-15 11:59:23 -04009#include "SkColorData.h"
Matt Sarett8572d852017-02-14 11:21:02 -050010#include "SkColorSpace_Base.h"
11#include "SkHalf.h"
12#include "SkImageInfoPriv.h"
reed@google.com4b163ed2012-08-07 21:35:13 +000013#include "SkMathPriv.h"
reed52d9ac62014-06-30 09:05:34 -070014#include "SkSurface.h"
tfarina@chromium.org4ee16bf2014-01-10 22:08:27 +000015#include "Test.h"
tfarina@chromium.org4ee16bf2014-01-10 22:08:27 +000016
bsalomon@google.comcf8fb1f2012-08-02 14:03:32 +000017#if SK_SUPPORT_GPU
kkinnunen15302832015-12-01 04:35:26 -080018#include "GrContext.h"
Robert Phillipseb4f1862017-06-08 16:38:25 -040019#include "GrContextFactory.h"
Robert Phillipse78b7252017-04-06 07:59:41 -040020#include "GrContextPriv.h"
bsalomone8d21e82015-07-16 08:23:13 -070021#include "SkGr.h"
bsalomon@google.comcf8fb1f2012-08-02 14:03:32 +000022#endif
bsalomon@google.comc6980972011-11-02 19:57:21 +000023
kkinnunen15302832015-12-01 04:35:26 -080024#include <initializer_list>
25
bsalomon@google.comc6980972011-11-02 19:57:21 +000026static const int DEV_W = 100, DEV_H = 100;
27static const SkIRect DEV_RECT = SkIRect::MakeWH(DEV_W, DEV_H);
rmistry@google.comd6176b02012-08-23 18:14:13 +000028static const SkRect DEV_RECT_S = SkRect::MakeWH(DEV_W * SK_Scalar1,
bsalomon@google.comc6980972011-11-02 19:57:21 +000029 DEV_H * SK_Scalar1);
30
bsalomone8d21e82015-07-16 08:23:13 -070031static SkPMColor get_src_color(int x, int y) {
bsalomon@google.comc6980972011-11-02 19:57:21 +000032 SkASSERT(x >= 0 && x < DEV_W);
33 SkASSERT(y >= 0 && y < DEV_H);
bsalomon@google.com6850eab2011-11-03 20:29:47 +000034
35 U8CPU r = x;
36 U8CPU g = y;
37 U8CPU b = 0xc;
38
39 U8CPU a = 0xff;
bsalomon@google.comc4364992011-11-07 15:54:49 +000040 switch ((x+y) % 5) {
bsalomon@google.com6850eab2011-11-03 20:29:47 +000041 case 0:
42 a = 0xff;
43 break;
44 case 1:
45 a = 0x80;
46 break;
47 case 2:
48 a = 0xCC;
49 break;
50 case 4:
51 a = 0x01;
52 break;
53 case 3:
54 a = 0x00;
55 break;
56 }
57 return SkPremultiplyARGBInline(a, r, g, b);
bsalomon@google.comc6980972011-11-02 19:57:21 +000058}
halcanary9d524f22016-03-29 09:03:52 -070059
bsalomone8d21e82015-07-16 08:23:13 -070060static SkPMColor get_dst_bmp_init_color(int x, int y, int w) {
bsalomon@google.comc6980972011-11-02 19:57:21 +000061 int n = y * w + x;
bsalomon@google.com6850eab2011-11-03 20:29:47 +000062
bsalomon@google.comc6980972011-11-02 19:57:21 +000063 U8CPU b = n & 0xff;
64 U8CPU g = (n >> 8) & 0xff;
65 U8CPU r = (n >> 16) & 0xff;
66 return SkPackARGB32(0xff, r, g , b);
67}
68
bsalomone8d21e82015-07-16 08:23:13 -070069static SkPMColor convert_to_pmcolor(SkColorType ct, SkAlphaType at, const uint32_t* addr,
70 bool* doUnpremul) {
commit-bot@chromium.orga713f9c2014-03-17 21:31:26 +000071 *doUnpremul = (kUnpremul_SkAlphaType == at);
72
73 const uint8_t* c = reinterpret_cast<const uint8_t*>(addr);
bsalomon@google.com6850eab2011-11-03 20:29:47 +000074 U8CPU a,r,g,b;
commit-bot@chromium.orga713f9c2014-03-17 21:31:26 +000075 switch (ct) {
76 case kBGRA_8888_SkColorType:
bsalomon@google.com6850eab2011-11-03 20:29:47 +000077 b = static_cast<U8CPU>(c[0]);
commit-bot@chromium.orga713f9c2014-03-17 21:31:26 +000078 g = static_cast<U8CPU>(c[1]);
79 r = static_cast<U8CPU>(c[2]);
bsalomon@google.com6850eab2011-11-03 20:29:47 +000080 a = static_cast<U8CPU>(c[3]);
commit-bot@chromium.orga713f9c2014-03-17 21:31:26 +000081 break;
82 case kRGBA_8888_SkColorType:
bsalomon@google.com6850eab2011-11-03 20:29:47 +000083 r = static_cast<U8CPU>(c[0]);
84 g = static_cast<U8CPU>(c[1]);
85 b = static_cast<U8CPU>(c[2]);
commit-bot@chromium.orga713f9c2014-03-17 21:31:26 +000086 a = static_cast<U8CPU>(c[3]);
bsalomon@google.com6850eab2011-11-03 20:29:47 +000087 break;
bsalomon@google.comccaa0022012-09-25 19:55:07 +000088 default:
commit-bot@chromium.orga713f9c2014-03-17 21:31:26 +000089 SkDEBUGFAIL("Unexpected colortype");
bsalomon@google.comccaa0022012-09-25 19:55:07 +000090 return 0;
bsalomon@google.com6850eab2011-11-03 20:29:47 +000091 }
commit-bot@chromium.orga713f9c2014-03-17 21:31:26 +000092
93 if (*doUnpremul) {
bsalomon@google.com6850eab2011-11-03 20:29:47 +000094 r = SkMulDiv255Ceiling(r, a);
95 g = SkMulDiv255Ceiling(g, a);
96 b = SkMulDiv255Ceiling(b, a);
97 }
98 return SkPackARGB32(a, r, g, b);
99}
100
bsalomone8d21e82015-07-16 08:23:13 -0700101static SkBitmap make_src_bitmap() {
bsalomon@google.comc6980972011-11-02 19:57:21 +0000102 static SkBitmap bmp;
103 if (bmp.isNull()) {
reed84825042014-09-02 12:50:45 -0700104 bmp.allocN32Pixels(DEV_W, DEV_H);
bsalomon@google.comc6980972011-11-02 19:57:21 +0000105 intptr_t pixels = reinterpret_cast<intptr_t>(bmp.getPixels());
106 for (int y = 0; y < DEV_H; ++y) {
107 for (int x = 0; x < DEV_W; ++x) {
108 SkPMColor* pixel = reinterpret_cast<SkPMColor*>(pixels + y * bmp.rowBytes() + x * bmp.bytesPerPixel());
bsalomone8d21e82015-07-16 08:23:13 -0700109 *pixel = get_src_color(x, y);
bsalomon@google.comc6980972011-11-02 19:57:21 +0000110 }
111 }
112 }
bsalomone8d21e82015-07-16 08:23:13 -0700113 return bmp;
114}
115
116static void fill_src_canvas(SkCanvas* canvas) {
bsalomon@google.comc6980972011-11-02 19:57:21 +0000117 canvas->save();
118 canvas->setMatrix(SkMatrix::I());
Mike Reedc1f77742016-12-09 09:00:50 -0500119 canvas->clipRect(DEV_RECT_S, kReplace_SkClipOp);
bsalomon@google.comc6980972011-11-02 19:57:21 +0000120 SkPaint paint;
reed374772b2016-10-05 17:33:02 -0700121 paint.setBlendMode(SkBlendMode::kSrc);
bsalomone8d21e82015-07-16 08:23:13 -0700122 canvas->drawBitmap(make_src_bitmap(), 0, 0, &paint);
bsalomon@google.comc6980972011-11-02 19:57:21 +0000123 canvas->restore();
124}
rmistry@google.comd6176b02012-08-23 18:14:13 +0000125
bsalomone8d21e82015-07-16 08:23:13 -0700126static void fill_dst_bmp_with_init_data(SkBitmap* bitmap) {
bsalomon@google.comc6980972011-11-02 19:57:21 +0000127 int w = bitmap->width();
128 int h = bitmap->height();
129 intptr_t pixels = reinterpret_cast<intptr_t>(bitmap->getPixels());
130 for (int y = 0; y < h; ++y) {
131 for (int x = 0; x < w; ++x) {
lsalzmana2415ac2016-10-11 14:29:12 -0700132 SkPMColor initColor = get_dst_bmp_init_color(x, y, w);
133 if (kAlpha_8_SkColorType == bitmap->colorType()) {
134 uint8_t* alpha = reinterpret_cast<uint8_t*>(pixels + y * bitmap->rowBytes() + x);
135 *alpha = SkGetPackedA32(initColor);
136 } else {
137 SkPMColor* pixel = reinterpret_cast<SkPMColor*>(pixels + y * bitmap->rowBytes() + x * bitmap->bytesPerPixel());
138 *pixel = initColor;
139 }
bsalomon@google.comc6980972011-11-02 19:57:21 +0000140 }
141 }
142}
143
bsalomone8d21e82015-07-16 08:23:13 -0700144static bool check_read_pixel(SkPMColor a, SkPMColor b, bool didPremulConversion) {
bsalomon@google.comc4364992011-11-07 15:54:49 +0000145 if (!didPremulConversion) {
146 return a == b;
147 }
148 int32_t aA = static_cast<int32_t>(SkGetPackedA32(a));
149 int32_t aR = static_cast<int32_t>(SkGetPackedR32(a));
150 int32_t aG = static_cast<int32_t>(SkGetPackedG32(a));
151 int32_t aB = SkGetPackedB32(a);
152
153 int32_t bA = static_cast<int32_t>(SkGetPackedA32(b));
154 int32_t bR = static_cast<int32_t>(SkGetPackedR32(b));
155 int32_t bG = static_cast<int32_t>(SkGetPackedG32(b));
156 int32_t bB = static_cast<int32_t>(SkGetPackedB32(b));
157
158 return aA == bA &&
159 SkAbs32(aR - bR) <= 1 &&
160 SkAbs32(aG - bG) <= 1 &&
161 SkAbs32(aB - bB) <= 1;
162}
163
bsalomon@google.comc6980972011-11-02 19:57:21 +0000164// checks the bitmap contains correct pixels after the readPixels
165// if the bitmap was prefilled with pixels it checks that these weren't
166// overwritten in the area outside the readPixels.
bsalomone8d21e82015-07-16 08:23:13 -0700167static bool check_read(skiatest::Reporter* reporter,
168 const SkBitmap& bitmap,
169 int x, int y,
170 bool checkCanvasPixels,
lsalzmana2415ac2016-10-11 14:29:12 -0700171 bool checkBitmapPixels,
172 SkColorType ct,
173 SkAlphaType at) {
174 SkASSERT(ct == bitmap.colorType() && at == bitmap.alphaType());
bsalomon@google.comc6980972011-11-02 19:57:21 +0000175 SkASSERT(!bitmap.isNull());
bsalomon@google.com6850eab2011-11-03 20:29:47 +0000176 SkASSERT(checkCanvasPixels || checkBitmapPixels);
rmistry@google.comd6176b02012-08-23 18:14:13 +0000177
bsalomon@google.comc6980972011-11-02 19:57:21 +0000178 int bw = bitmap.width();
179 int bh = bitmap.height();
180
181 SkIRect srcRect = SkIRect::MakeXYWH(x, y, bw, bh);
182 SkIRect clippedSrcRect = DEV_RECT;
183 if (!clippedSrcRect.intersect(srcRect)) {
184 clippedSrcRect.setEmpty();
185 }
lsalzmana2415ac2016-10-11 14:29:12 -0700186 if (kAlpha_8_SkColorType == ct) {
187 for (int by = 0; by < bh; ++by) {
188 for (int bx = 0; bx < bw; ++bx) {
189 int devx = bx + srcRect.fLeft;
190 int devy = by + srcRect.fTop;
191 const uint8_t* alpha = bitmap.getAddr8(bx, by);
192
193 if (clippedSrcRect.contains(devx, devy)) {
194 if (checkCanvasPixels) {
195 uint8_t canvasAlpha = SkGetPackedA32(get_src_color(devx, devy));
196 if (canvasAlpha != *alpha) {
197 ERRORF(reporter, "Expected readback alpha (%d, %d) value 0x%02x, got 0x%02x. ",
198 bx, by, canvasAlpha, *alpha);
199 return false;
200 }
201 }
202 } else if (checkBitmapPixels) {
203 uint32_t origDstAlpha = SkGetPackedA32(get_dst_bmp_init_color(bx, by, bw));
204 if (origDstAlpha != *alpha) {
205 ERRORF(reporter, "Expected clipped out area of readback to be unchanged. "
206 "Expected 0x%02x, got 0x%02x", origDstAlpha, *alpha);
207 return false;
208 }
209 }
210 }
211 }
212 return true;
213 }
bsalomon@google.comc6980972011-11-02 19:57:21 +0000214 for (int by = 0; by < bh; ++by) {
215 for (int bx = 0; bx < bw; ++bx) {
216 int devx = bx + srcRect.fLeft;
217 int devy = by + srcRect.fTop;
rmistry@google.comd6176b02012-08-23 18:14:13 +0000218
commit-bot@chromium.orga713f9c2014-03-17 21:31:26 +0000219 const uint32_t* pixel = bitmap.getAddr32(bx, by);
bsalomon@google.comc6980972011-11-02 19:57:21 +0000220
221 if (clippedSrcRect.contains(devx, devy)) {
bsalomon@google.com6850eab2011-11-03 20:29:47 +0000222 if (checkCanvasPixels) {
bsalomone8d21e82015-07-16 08:23:13 -0700223 SkPMColor canvasPixel = get_src_color(devx, devy);
bsalomon@google.comc4364992011-11-07 15:54:49 +0000224 bool didPremul;
bsalomone8d21e82015-07-16 08:23:13 -0700225 SkPMColor pmPixel = convert_to_pmcolor(ct, at, pixel, &didPremul);
bsalomon39826022015-07-23 08:07:21 -0700226 if (!check_read_pixel(pmPixel, canvasPixel, didPremul)) {
egdaniel88e8aef2016-06-27 14:34:55 -0700227 ERRORF(reporter, "Expected readback pixel (%d, %d) value 0x%08x, got 0x%08x. "
228 "Readback was unpremul: %d", bx, by, canvasPixel, pmPixel, didPremul);
bsalomon@google.com72f3dca2012-08-17 13:32:06 +0000229 return false;
bsalomon@google.com6850eab2011-11-03 20:29:47 +0000230 }
bsalomon@google.comc6980972011-11-02 19:57:21 +0000231 }
bsalomon@google.com6850eab2011-11-03 20:29:47 +0000232 } else if (checkBitmapPixels) {
bsalomon39826022015-07-23 08:07:21 -0700233 uint32_t origDstPixel = get_dst_bmp_init_color(bx, by, bw);
234 if (origDstPixel != *pixel) {
235 ERRORF(reporter, "Expected clipped out area of readback to be unchanged. "
236 "Expected 0x%08x, got 0x%08x", origDstPixel, *pixel);
bsalomon@google.com72f3dca2012-08-17 13:32:06 +0000237 return false;
bsalomon@google.comc6980972011-11-02 19:57:21 +0000238 }
239 }
240 }
241 }
bsalomon@google.com72f3dca2012-08-17 13:32:06 +0000242 return true;
bsalomon@google.comc6980972011-11-02 19:57:21 +0000243}
244
245enum BitmapInit {
246 kFirstBitmapInit = 0,
rmistry@google.comd6176b02012-08-23 18:14:13 +0000247
Mike Reed12e946b2017-04-17 10:53:29 -0400248 kTight_BitmapInit = kFirstBitmapInit,
bsalomon@google.comc6980972011-11-02 19:57:21 +0000249 kRowBytes_BitmapInit,
bsalomon9d02b262016-02-01 12:49:30 -0800250 kRowBytesOdd_BitmapInit,
rmistry@google.comd6176b02012-08-23 18:14:13 +0000251
bsalomon9d02b262016-02-01 12:49:30 -0800252 kLastAligned_BitmapInit = kRowBytes_BitmapInit,
Brian Salomona64afd62016-02-01 16:44:22 -0500253
254#if 0 // THIS CAUSES ERRORS ON WINDOWS AND SOME ANDROID DEVICES
bsalomon9d02b262016-02-01 12:49:30 -0800255 kLast_BitmapInit = kRowBytesOdd_BitmapInit
Brian Salomona64afd62016-02-01 16:44:22 -0500256#else
257 kLast_BitmapInit = kLastAligned_BitmapInit
258#endif
bsalomon@google.comc6980972011-11-02 19:57:21 +0000259};
260
commit-bot@chromium.orgddf94cf2013-10-12 17:25:17 +0000261static BitmapInit nextBMI(BitmapInit bmi) {
bsalomon@google.comc6980972011-11-02 19:57:21 +0000262 int x = bmi;
263 return static_cast<BitmapInit>(++x);
264}
265
commit-bot@chromium.orga713f9c2014-03-17 21:31:26 +0000266static void init_bitmap(SkBitmap* bitmap, const SkIRect& rect, BitmapInit init, SkColorType ct,
267 SkAlphaType at) {
268 SkImageInfo info = SkImageInfo::Make(rect.width(), rect.height(), ct, at);
commit-bot@chromium.orgfa9e5fa2014-02-13 22:00:04 +0000269 size_t rowBytes = 0;
bsalomon@google.comc6980972011-11-02 19:57:21 +0000270 switch (init) {
bsalomon@google.comc6980972011-11-02 19:57:21 +0000271 case kTight_BitmapInit:
272 break;
273 case kRowBytes_BitmapInit:
lsalzmana2415ac2016-10-11 14:29:12 -0700274 rowBytes = SkAlign4((info.width() + 16) * info.bytesPerPixel());
bsalomon@google.comc6980972011-11-02 19:57:21 +0000275 break;
bsalomon9d02b262016-02-01 12:49:30 -0800276 case kRowBytesOdd_BitmapInit:
lsalzmana2415ac2016-10-11 14:29:12 -0700277 rowBytes = SkAlign4(info.width() * info.bytesPerPixel()) + 3;
bsalomon9d02b262016-02-01 12:49:30 -0800278 break;
bsalomon@google.comc6980972011-11-02 19:57:21 +0000279 default:
280 SkASSERT(0);
281 break;
282 }
Mike Reed12e946b2017-04-17 10:53:29 -0400283 bitmap->allocPixels(info, rowBytes);
bsalomon@google.comc6980972011-11-02 19:57:21 +0000284}
285
kkinnunen15302832015-12-01 04:35:26 -0800286static const struct {
287 SkColorType fColorType;
288 SkAlphaType fAlphaType;
289} gReadPixelsConfigs[] = {
290 { kRGBA_8888_SkColorType, kPremul_SkAlphaType },
291 { kRGBA_8888_SkColorType, kUnpremul_SkAlphaType },
292 { kBGRA_8888_SkColorType, kPremul_SkAlphaType },
293 { kBGRA_8888_SkColorType, kUnpremul_SkAlphaType },
lsalzmana2415ac2016-10-11 14:29:12 -0700294 { kAlpha_8_SkColorType, kPremul_SkAlphaType },
kkinnunen15302832015-12-01 04:35:26 -0800295};
296const SkIRect gReadPixelsTestRects[] = {
297 // entire thing
298 DEV_RECT,
299 // larger on all sides
300 SkIRect::MakeLTRB(-10, -10, DEV_W + 10, DEV_H + 10),
301 // fully contained
302 SkIRect::MakeLTRB(DEV_W / 4, DEV_H / 4, 3 * DEV_W / 4, 3 * DEV_H / 4),
303 // outside top left
304 SkIRect::MakeLTRB(-10, -10, -1, -1),
305 // touching top left corner
306 SkIRect::MakeLTRB(-10, -10, 0, 0),
307 // overlapping top left corner
308 SkIRect::MakeLTRB(-10, -10, DEV_W / 4, DEV_H / 4),
309 // overlapping top left and top right corners
310 SkIRect::MakeLTRB(-10, -10, DEV_W + 10, DEV_H / 4),
311 // touching entire top edge
312 SkIRect::MakeLTRB(-10, -10, DEV_W + 10, 0),
313 // overlapping top right corner
314 SkIRect::MakeLTRB(3 * DEV_W / 4, -10, DEV_W + 10, DEV_H / 4),
315 // contained in x, overlapping top edge
316 SkIRect::MakeLTRB(DEV_W / 4, -10, 3 * DEV_W / 4, DEV_H / 4),
317 // outside top right corner
318 SkIRect::MakeLTRB(DEV_W + 1, -10, DEV_W + 10, -1),
319 // touching top right corner
320 SkIRect::MakeLTRB(DEV_W, -10, DEV_W + 10, 0),
321 // overlapping top left and bottom left corners
322 SkIRect::MakeLTRB(-10, -10, DEV_W / 4, DEV_H + 10),
323 // touching entire left edge
324 SkIRect::MakeLTRB(-10, -10, 0, DEV_H + 10),
325 // overlapping bottom left corner
326 SkIRect::MakeLTRB(-10, 3 * DEV_H / 4, DEV_W / 4, DEV_H + 10),
327 // contained in y, overlapping left edge
328 SkIRect::MakeLTRB(-10, DEV_H / 4, DEV_W / 4, 3 * DEV_H / 4),
329 // outside bottom left corner
330 SkIRect::MakeLTRB(-10, DEV_H + 1, -1, DEV_H + 10),
331 // touching bottom left corner
332 SkIRect::MakeLTRB(-10, DEV_H, 0, DEV_H + 10),
333 // overlapping bottom left and bottom right corners
334 SkIRect::MakeLTRB(-10, 3 * DEV_H / 4, DEV_W + 10, DEV_H + 10),
335 // touching entire left edge
336 SkIRect::MakeLTRB(0, DEV_H, DEV_W, DEV_H + 10),
337 // overlapping bottom right corner
338 SkIRect::MakeLTRB(3 * DEV_W / 4, 3 * DEV_H / 4, DEV_W + 10, DEV_H + 10),
339 // overlapping top right and bottom right corners
340 SkIRect::MakeLTRB(3 * DEV_W / 4, -10, DEV_W + 10, DEV_H + 10),
341};
bsalomon@google.comc6980972011-11-02 19:57:21 +0000342
reede8f30622016-03-23 18:59:25 -0700343static void test_readpixels(skiatest::Reporter* reporter, const sk_sp<SkSurface>& surface,
bsalomon9d02b262016-02-01 12:49:30 -0800344 BitmapInit lastBitmapInit) {
kkinnunen15302832015-12-01 04:35:26 -0800345 SkCanvas* canvas = surface->getCanvas();
346 fill_src_canvas(canvas);
347 for (size_t rect = 0; rect < SK_ARRAY_COUNT(gReadPixelsTestRects); ++rect) {
348 const SkIRect& srcRect = gReadPixelsTestRects[rect];
bsalomon9d02b262016-02-01 12:49:30 -0800349 for (BitmapInit bmi = kFirstBitmapInit; bmi <= lastBitmapInit; bmi = nextBMI(bmi)) {
kkinnunen15302832015-12-01 04:35:26 -0800350 for (size_t c = 0; c < SK_ARRAY_COUNT(gReadPixelsConfigs); ++c) {
351 SkBitmap bmp;
352 init_bitmap(&bmp, srcRect, bmi,
353 gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType);
bsalomone8d21e82015-07-16 08:23:13 -0700354
kkinnunen15302832015-12-01 04:35:26 -0800355 // if the bitmap has pixels allocated before the readPixels,
356 // note that and fill them with pattern
357 bool startsWithPixels = !bmp.isNull();
358 if (startsWithPixels) {
359 fill_dst_bmp_with_init_data(&bmp);
360 }
361 uint32_t idBefore = surface->generationID();
Mike Reedf1942192017-07-21 14:24:29 -0400362 bool success = surface->readPixels(bmp, srcRect.fLeft, srcRect.fTop);
kkinnunen15302832015-12-01 04:35:26 -0800363 uint32_t idAfter = surface->generationID();
364
365 // we expect to succeed when the read isn't fully clipped
366 // out.
367 bool expectSuccess = SkIRect::Intersects(srcRect, DEV_RECT);
368 // determine whether we expected the read to succeed.
369 REPORTER_ASSERT(reporter, success == expectSuccess);
370 // read pixels should never change the gen id
371 REPORTER_ASSERT(reporter, idBefore == idAfter);
372
373 if (success || startsWithPixels) {
374 check_read(reporter, bmp, srcRect.fLeft, srcRect.fTop,
lsalzmana2415ac2016-10-11 14:29:12 -0700375 success, startsWithPixels,
376 gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType);
kkinnunen15302832015-12-01 04:35:26 -0800377 } else {
378 // if we had no pixels beforehand and the readPixels
379 // failed then our bitmap should still not have pixels
380 REPORTER_ASSERT(reporter, bmp.isNull());
381 }
382 }
kkinnunen15302832015-12-01 04:35:26 -0800383 }
384 }
385}
386DEF_TEST(ReadPixels, reporter) {
387 const SkImageInfo info = SkImageInfo::MakeN32Premul(DEV_W, DEV_H);
reede8f30622016-03-23 18:59:25 -0700388 auto surface(SkSurface::MakeRaster(info));
bsalomon9d02b262016-02-01 12:49:30 -0800389 // SW readback fails a premul check when reading back to an unaligned rowbytes.
390 test_readpixels(reporter, surface, kLastAligned_BitmapInit);
kkinnunen15302832015-12-01 04:35:26 -0800391}
bsalomone8d21e82015-07-16 08:23:13 -0700392#if SK_SUPPORT_GPU
egdaniel88e8aef2016-06-27 14:34:55 -0700393DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ReadPixels_Gpu, reporter, ctxInfo) {
Robert Phillipseb4f1862017-06-08 16:38:25 -0400394 if (ctxInfo.type() == sk_gpu_test::GrContextFactory::kANGLE_D3D9_ES2_ContextType ||
395 ctxInfo.type() == sk_gpu_test::GrContextFactory::kANGLE_GL_ES2_ContextType ||
396 ctxInfo.type() == sk_gpu_test::GrContextFactory::kANGLE_D3D11_ES2_ContextType) {
397 // skbug.com/6742 ReadPixels_Texture & _Gpu don't work with ANGLE ES2 configs
398 return;
399 }
400
robertphillips7e922762016-07-26 11:38:17 -0700401 const SkImageInfo ii = SkImageInfo::MakeN32Premul(DEV_W, DEV_H);
kkinnunen15302832015-12-01 04:35:26 -0800402 for (auto& origin : {kBottomLeft_GrSurfaceOrigin, kTopLeft_GrSurfaceOrigin}) {
robertphillips7e922762016-07-26 11:38:17 -0700403 sk_sp<SkSurface> surface(SkSurface::MakeRenderTarget(ctxInfo.grContext(), SkBudgeted::kNo,
404 ii, 0, origin, nullptr));
bsalomon9d02b262016-02-01 12:49:30 -0800405 test_readpixels(reporter, surface, kLast_BitmapInit);
kkinnunen15302832015-12-01 04:35:26 -0800406 }
407}
bsalomone8d21e82015-07-16 08:23:13 -0700408#endif
bsalomon@google.com67b915d2013-02-04 16:13:32 +0000409
bsalomone8d21e82015-07-16 08:23:13 -0700410#if SK_SUPPORT_GPU
Robert Phillipse78b7252017-04-06 07:59:41 -0400411static void test_readpixels_texture(skiatest::Reporter* reporter,
Robert Phillipsbab2dbb2017-04-17 07:43:27 -0400412 sk_sp<GrSurfaceContext> sContext) {
kkinnunen15302832015-12-01 04:35:26 -0800413 for (size_t rect = 0; rect < SK_ARRAY_COUNT(gReadPixelsTestRects); ++rect) {
414 const SkIRect& srcRect = gReadPixelsTestRects[rect];
bsalomon9d02b262016-02-01 12:49:30 -0800415 for (BitmapInit bmi = kFirstBitmapInit; bmi <= kLast_BitmapInit; bmi = nextBMI(bmi)) {
kkinnunen15302832015-12-01 04:35:26 -0800416 for (size_t c = 0; c < SK_ARRAY_COUNT(gReadPixelsConfigs); ++c) {
417 SkBitmap bmp;
418 init_bitmap(&bmp, srcRect, bmi,
419 gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType);
420
421 // if the bitmap has pixels allocated before the readPixels,
422 // note that and fill them with pattern
423 bool startsWithPixels = !bmp.isNull();
424 // Try doing the read directly from a non-renderable texture
425 if (startsWithPixels) {
426 fill_dst_bmp_with_init_data(&bmp);
kkinnunen15302832015-12-01 04:35:26 -0800427 uint32_t flags = 0;
428 if (gReadPixelsConfigs[c].fAlphaType == kUnpremul_SkAlphaType) {
Robert Phillipse78b7252017-04-06 07:59:41 -0400429 flags = GrContextPriv::kUnpremul_PixelOpsFlag;
bsalomon@google.com67b915d2013-02-04 16:13:32 +0000430 }
Robert Phillipsbab2dbb2017-04-17 07:43:27 -0400431 bool success = sContext->readPixels(bmp.info(), bmp.getPixels(),
432 bmp.rowBytes(),
433 srcRect.fLeft, srcRect.fTop, flags);
kkinnunen15302832015-12-01 04:35:26 -0800434 check_read(reporter, bmp, srcRect.fLeft, srcRect.fTop,
lsalzmana2415ac2016-10-11 14:29:12 -0700435 success, true,
436 gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType);
bsalomon@google.comc6980972011-11-02 19:57:21 +0000437 }
438 }
439 }
440 }
441}
Robert Phillipsbab2dbb2017-04-17 07:43:27 -0400442
egdaniel88e8aef2016-06-27 14:34:55 -0700443DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ReadPixels_Texture, reporter, ctxInfo) {
Robert Phillipseb4f1862017-06-08 16:38:25 -0400444 if (ctxInfo.type() == sk_gpu_test::GrContextFactory::kANGLE_D3D9_ES2_ContextType ||
445 ctxInfo.type() == sk_gpu_test::GrContextFactory::kANGLE_GL_ES2_ContextType ||
446 ctxInfo.type() == sk_gpu_test::GrContextFactory::kANGLE_D3D11_ES2_ContextType) {
447 // skbug.com/6742 ReadPixels_Texture & _Gpu don't work with ANGLE ES2 configs
448 return;
449 }
450
Robert Phillipsbab2dbb2017-04-17 07:43:27 -0400451 GrContext* context = ctxInfo.grContext();
452
453 SkBitmap bmp = make_src_bitmap();
Robert Phillipsbab2dbb2017-04-17 07:43:27 -0400454
kkinnunen15302832015-12-01 04:35:26 -0800455 // On the GPU we will also try reading back from a non-renderable texture.
Brian Salomon8b1fb742016-11-03 15:21:06 -0400456 for (auto origin : {kBottomLeft_GrSurfaceOrigin, kTopLeft_GrSurfaceOrigin}) {
457 for (auto flags : {kNone_GrSurfaceFlags, kRenderTarget_GrSurfaceFlag}) {
458 GrSurfaceDesc desc;
459 desc.fFlags = flags;
460 desc.fWidth = DEV_W;
461 desc.fHeight = DEV_H;
462 desc.fConfig = kSkia8888_GrPixelConfig;
463 desc.fOrigin = origin;
Robert Phillipsbab2dbb2017-04-17 07:43:27 -0400464
465 sk_sp<GrTextureProxy> proxy = GrSurfaceProxy::MakeDeferred(context->resourceProvider(),
466 desc, SkBudgeted::kNo,
467 bmp.getPixels(),
468 bmp.rowBytes());
469
470 sk_sp<GrSurfaceContext> sContext = context->contextPriv().makeWrappedSurfaceContext(
471 std::move(proxy), nullptr);
472
473 test_readpixels_texture(reporter, std::move(sContext));
Brian Salomon8b1fb742016-11-03 15:21:06 -0400474 }
kkinnunen15302832015-12-01 04:35:26 -0800475 }
476}
477#endif
Matt Sarett8572d852017-02-14 11:21:02 -0500478
479///////////////////////////////////////////////////////////////////////////////////////////////////
480
481static const uint32_t kNumPixels = 5;
482
483// The five reference pixels are: red, green, blue, white, black.
484// Five is an interesting number to test because we'll exercise a full 4-wide SIMD vector
485// plus a tail pixel.
486static const uint32_t rgba[kNumPixels] = {
487 0xFF0000FF, 0xFF00FF00, 0xFFFF0000, 0xFFFFFFFF, 0xFF000000
488};
489static const uint32_t bgra[kNumPixels] = {
490 0xFFFF0000, 0xFF00FF00, 0xFF0000FF, 0xFFFFFFFF, 0xFF000000
491};
492static const uint16_t rgb565[kNumPixels] = {
493 SK_R16_MASK_IN_PLACE, SK_G16_MASK_IN_PLACE, SK_B16_MASK_IN_PLACE, 0xFFFF, 0x0
494};
495
496static const uint16_t rgba4444[kNumPixels] = { 0xF00F, 0x0F0F, 0x00FF, 0xFFFF, 0x000F };
497
498static const uint64_t kRed = (uint64_t) SK_Half1 << 0;
499static const uint64_t kGreen = (uint64_t) SK_Half1 << 16;
500static const uint64_t kBlue = (uint64_t) SK_Half1 << 32;
501static const uint64_t kAlpha = (uint64_t) SK_Half1 << 48;
502static const uint64_t f16[kNumPixels] = {
503 kAlpha | kRed, kAlpha | kGreen, kAlpha | kBlue, kAlpha | kBlue | kGreen | kRed, kAlpha
504};
505
Matt Sarett8572d852017-02-14 11:21:02 -0500506static const uint8_t alpha8[kNumPixels] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
507static const uint8_t gray8[kNumPixels] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
508
509static const void* five_reference_pixels(SkColorType colorType) {
510 switch (colorType) {
511 case kUnknown_SkColorType:
512 return nullptr;
513 case kAlpha_8_SkColorType:
514 return alpha8;
515 case kRGB_565_SkColorType:
516 return rgb565;
517 case kARGB_4444_SkColorType:
518 return rgba4444;
519 case kRGBA_8888_SkColorType:
520 return rgba;
521 case kBGRA_8888_SkColorType:
522 return bgra;
Matt Sarett8572d852017-02-14 11:21:02 -0500523 case kGray_8_SkColorType:
524 return gray8;
525 case kRGBA_F16_SkColorType:
526 return f16;
Mike Reed304a07c2017-07-12 15:10:28 -0400527 default:
528 return nullptr; // remove me when kIndex_8 is removed from the enum
Matt Sarett8572d852017-02-14 11:21:02 -0500529 }
530
531 SkASSERT(false);
532 return nullptr;
533}
534
535static void test_conversion(skiatest::Reporter* r, const SkImageInfo& dstInfo,
536 const SkImageInfo& srcInfo) {
Matt Sarett26b44df2017-05-02 16:04:56 -0400537 if (!SkImageInfoIsValidRenderingCS(srcInfo)) {
Matt Sarett8572d852017-02-14 11:21:02 -0500538 return;
539 }
540
Matt Sarett8572d852017-02-14 11:21:02 -0500541 const void* srcPixels = five_reference_pixels(srcInfo.colorType());
Mike Reed304a07c2017-07-12 15:10:28 -0400542 SkPixmap srcPixmap(srcInfo, srcPixels, srcInfo.minRowBytes());
Matt Sarett8572d852017-02-14 11:21:02 -0500543 sk_sp<SkImage> src = SkImage::MakeFromRaster(srcPixmap, nullptr, nullptr);
544 REPORTER_ASSERT(r, src);
545
546 // Enough space for 5 pixels when color type is F16, more than enough space in other cases.
547 uint64_t dstPixels[kNumPixels];
Mike Reed304a07c2017-07-12 15:10:28 -0400548 SkPixmap dstPixmap(dstInfo, dstPixels, dstInfo.minRowBytes());
Matt Sarett8572d852017-02-14 11:21:02 -0500549 bool success = src->readPixels(dstPixmap, 0, 0);
550 REPORTER_ASSERT(r, success == SkImageInfoValidConversion(dstInfo, srcInfo));
551
552 if (success) {
553 if (kGray_8_SkColorType == srcInfo.colorType() &&
554 kGray_8_SkColorType != dstInfo.colorType())
555 {
556 // This conversion is legal, but we won't get the "reference" pixels since we cannot
557 // represent colors in kGray8.
558 return;
559 }
560
561 REPORTER_ASSERT(r, 0 == memcmp(dstPixels, five_reference_pixels(dstInfo.colorType()),
562 kNumPixels * SkColorTypeBytesPerPixel(dstInfo.colorType())));
563
564 }
565}
566
567DEF_TEST(ReadPixels_ValidConversion, reporter) {
568 const SkColorType kColorTypes[] = {
569 kUnknown_SkColorType,
570 kAlpha_8_SkColorType,
571 kRGB_565_SkColorType,
572 kARGB_4444_SkColorType,
573 kRGBA_8888_SkColorType,
574 kBGRA_8888_SkColorType,
Matt Sarett8572d852017-02-14 11:21:02 -0500575 kGray_8_SkColorType,
576 kRGBA_F16_SkColorType,
577 };
578
579 const SkAlphaType kAlphaTypes[] = {
580 kUnknown_SkAlphaType,
581 kOpaque_SkAlphaType,
582 kPremul_SkAlphaType,
583 kUnpremul_SkAlphaType,
584 };
585
586 const sk_sp<SkColorSpace> kColorSpaces[] = {
587 nullptr,
588 SkColorSpace::MakeSRGB(),
589 };
590
591 for (SkColorType dstCT : kColorTypes) {
592 for (SkAlphaType dstAT: kAlphaTypes) {
593 for (sk_sp<SkColorSpace> dstCS : kColorSpaces) {
594 for (SkColorType srcCT : kColorTypes) {
595 for (SkAlphaType srcAT: kAlphaTypes) {
596 for (sk_sp<SkColorSpace> srcCS : kColorSpaces) {
597 if (kRGBA_F16_SkColorType == dstCT && dstCS) {
598 dstCS = as_CSB(dstCS)->makeLinearGamma();
599 }
600
601 if (kRGBA_F16_SkColorType == srcCT && srcCS) {
602 srcCS = as_CSB(srcCS)->makeLinearGamma();
603 }
604
605 test_conversion(reporter,
606 SkImageInfo::Make(kNumPixels, 1, dstCT, dstAT, dstCS),
607 SkImageInfo::Make(kNumPixels, 1, srcCT, srcAT, srcCS));
608 }
609 }
610 }
611 }
612 }
613 }
614}