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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "GrConfigConversionEffect.h" | 8 #include "GrConfigConversionEffect.h" |
9 #include "GrContext.h" | 9 #include "GrContext.h" |
10 #include "GrInvariantOutput.h" | 10 #include "GrInvariantOutput.h" |
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198 SkAutoTUnref<GrTexture> dataTex(context->createTexture(desc, true, data, 0))
; | 198 SkAutoTUnref<GrTexture> dataTex(context->createTexture(desc, true, data, 0))
; |
199 if (!dataTex.get()) { | 199 if (!dataTex.get()) { |
200 return; | 200 return; |
201 } | 201 } |
202 | 202 |
203 static const PMConversion kConversionRules[][2] = { | 203 static const PMConversion kConversionRules[][2] = { |
204 {kDivByAlpha_RoundDown_PMConversion, kMulByAlpha_RoundUp_PMConversion}, | 204 {kDivByAlpha_RoundDown_PMConversion, kMulByAlpha_RoundUp_PMConversion}, |
205 {kDivByAlpha_RoundUp_PMConversion, kMulByAlpha_RoundDown_PMConversion}, | 205 {kDivByAlpha_RoundUp_PMConversion, kMulByAlpha_RoundDown_PMConversion}, |
206 }; | 206 }; |
207 | 207 |
| 208 GrContext::AutoWideOpenIdentityDraw awoid(context); |
| 209 |
208 bool failed = true; | 210 bool failed = true; |
209 | 211 |
210 for (size_t i = 0; i < SK_ARRAY_COUNT(kConversionRules) && failed; ++i) { | 212 for (size_t i = 0; i < SK_ARRAY_COUNT(kConversionRules) && failed; ++i) { |
211 *pmToUPMRule = kConversionRules[i][0]; | 213 *pmToUPMRule = kConversionRules[i][0]; |
212 *upmToPMRule = kConversionRules[i][1]; | 214 *upmToPMRule = kConversionRules[i][1]; |
213 | 215 |
214 static const SkRect kDstRect = SkRect::MakeWH(SkIntToScalar(256), SkIntT
oScalar(256)); | 216 static const SkRect kDstRect = SkRect::MakeWH(SkIntToScalar(256), SkIntT
oScalar(256)); |
215 static const SkRect kSrcRect = SkRect::MakeWH(SK_Scalar1, SK_Scalar1); | 217 static const SkRect kSrcRect = SkRect::MakeWH(SK_Scalar1, SK_Scalar1); |
216 // We do a PM->UPM draw from dataTex to readTex and read the data. Then
we do a UPM->PM draw | 218 // We do a PM->UPM draw from dataTex to readTex and read the data. Then
we do a UPM->PM draw |
217 // from readTex to tempTex followed by a PM->UPM draw to readTex and fin
ally read the data. | 219 // from readTex to tempTex followed by a PM->UPM draw to readTex and fin
ally read the data. |
218 // We then verify that two reads produced the same values. | 220 // We then verify that two reads produced the same values. |
219 | 221 |
220 SkAutoTUnref<GrFragmentProcessor> pmToUPM1( | 222 SkAutoTUnref<GrFragmentProcessor> pmToUPM1( |
221 SkNEW_ARGS(GrConfigConversionEffect, | 223 SkNEW_ARGS(GrConfigConversionEffect, |
222 (dataTex, false, *pmToUPMRule, SkMatrix::I()))); | 224 (dataTex, false, *pmToUPMRule, SkMatrix::I()))); |
223 SkAutoTUnref<GrFragmentProcessor> upmToPM( | 225 SkAutoTUnref<GrFragmentProcessor> upmToPM( |
224 SkNEW_ARGS(GrConfigConversionEffect, | 226 SkNEW_ARGS(GrConfigConversionEffect, |
225 (readTex, false, *upmToPMRule, SkMatrix::I()))); | 227 (readTex, false, *upmToPMRule, SkMatrix::I()))); |
226 SkAutoTUnref<GrFragmentProcessor> pmToUPM2( | 228 SkAutoTUnref<GrFragmentProcessor> pmToUPM2( |
227 SkNEW_ARGS(GrConfigConversionEffect, | 229 SkNEW_ARGS(GrConfigConversionEffect, |
228 (tempTex, false, *pmToUPMRule, SkMatrix::I()))); | 230 (tempTex, false, *pmToUPMRule, SkMatrix::I()))); |
229 | 231 |
230 GrPaint paint1; | 232 GrPaint paint1; |
231 paint1.addColorProcessor(pmToUPM1); | 233 paint1.addColorProcessor(pmToUPM1); |
232 context->drawNonAARectToRect(readTex->asRenderTarget(), | 234 context->drawNonAARectToRect(readTex->asRenderTarget(), paint1, SkMatrix
::I(), kDstRect, |
233 GrClip::WideOpen(), | |
234 paint1, | |
235 SkMatrix::I(), | |
236 kDstRect, | |
237 kSrcRect); | 235 kSrcRect); |
238 | 236 |
239 readTex->readPixels(0, 0, 256, 256, kRGBA_8888_GrPixelConfig, firstRead)
; | 237 readTex->readPixels(0, 0, 256, 256, kRGBA_8888_GrPixelConfig, firstRead)
; |
240 | 238 |
241 GrPaint paint2; | 239 GrPaint paint2; |
242 paint2.addColorProcessor(upmToPM); | 240 paint2.addColorProcessor(upmToPM); |
243 context->drawNonAARectToRect(tempTex->asRenderTarget(), | 241 context->drawNonAARectToRect(tempTex->asRenderTarget(), paint2, SkMatrix
::I(), kDstRect, |
244 GrClip::WideOpen(), | |
245 paint2, | |
246 SkMatrix::I(), | |
247 kDstRect, | |
248 kSrcRect); | 242 kSrcRect); |
249 | 243 |
250 GrPaint paint3; | 244 GrPaint paint3; |
251 paint3.addColorProcessor(pmToUPM2); | 245 paint3.addColorProcessor(pmToUPM2); |
252 context->drawNonAARectToRect(readTex->asRenderTarget(), | 246 context->drawNonAARectToRect(readTex->asRenderTarget(), paint3, SkMatrix
::I(), kDstRect, |
253 GrClip::WideOpen(), | |
254 paint3, | |
255 SkMatrix::I(), | |
256 kDstRect, | |
257 kSrcRect); | 247 kSrcRect); |
258 | 248 |
259 readTex->readPixels(0, 0, 256, 256, kRGBA_8888_GrPixelConfig, secondRead
); | 249 readTex->readPixels(0, 0, 256, 256, kRGBA_8888_GrPixelConfig, secondRead
); |
260 | 250 |
261 failed = false; | 251 failed = false; |
262 for (int y = 0; y < 256 && !failed; ++y) { | 252 for (int y = 0; y < 256 && !failed; ++y) { |
263 for (int x = 0; x <= y; ++x) { | 253 for (int x = 0; x <= y; ++x) { |
264 if (firstRead[256 * y + x] != secondRead[256 * y + x]) { | 254 if (firstRead[256 * y + x] != secondRead[256 * y + x]) { |
265 failed = true; | 255 failed = true; |
266 break; | 256 break; |
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289 kNone_PMConversion != pmConversion) { | 279 kNone_PMConversion != pmConversion) { |
290 // The PM conversions assume colors are 0..255 | 280 // The PM conversions assume colors are 0..255 |
291 return NULL; | 281 return NULL; |
292 } | 282 } |
293 return SkNEW_ARGS(GrConfigConversionEffect, (texture, | 283 return SkNEW_ARGS(GrConfigConversionEffect, (texture, |
294 swapRedAndBlue, | 284 swapRedAndBlue, |
295 pmConversion, | 285 pmConversion, |
296 matrix)); | 286 matrix)); |
297 } | 287 } |
298 } | 288 } |
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