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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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199 SkAutoTUnref<GrTexture> dataTex(context->createTexture(desc, true, data, 0))
; | 199 SkAutoTUnref<GrTexture> dataTex(context->createTexture(desc, true, data, 0))
; |
200 if (!dataTex.get()) { | 200 if (!dataTex.get()) { |
201 return; | 201 return; |
202 } | 202 } |
203 | 203 |
204 static const PMConversion kConversionRules[][2] = { | 204 static const PMConversion kConversionRules[][2] = { |
205 {kDivByAlpha_RoundDown_PMConversion, kMulByAlpha_RoundUp_PMConversion}, | 205 {kDivByAlpha_RoundDown_PMConversion, kMulByAlpha_RoundUp_PMConversion}, |
206 {kDivByAlpha_RoundUp_PMConversion, kMulByAlpha_RoundDown_PMConversion}, | 206 {kDivByAlpha_RoundUp_PMConversion, kMulByAlpha_RoundDown_PMConversion}, |
207 }; | 207 }; |
208 | 208 |
209 GrContext::AutoWideOpenIdentityDraw awoid(context, NULL); | 209 GrContext::AutoWideOpenIdentityDraw awoid(context); |
210 | 210 |
211 bool failed = true; | 211 bool failed = true; |
212 | 212 |
213 for (size_t i = 0; i < SK_ARRAY_COUNT(kConversionRules) && failed; ++i) { | 213 for (size_t i = 0; i < SK_ARRAY_COUNT(kConversionRules) && failed; ++i) { |
214 *pmToUPMRule = kConversionRules[i][0]; | 214 *pmToUPMRule = kConversionRules[i][0]; |
215 *upmToPMRule = kConversionRules[i][1]; | 215 *upmToPMRule = kConversionRules[i][1]; |
216 | 216 |
217 static const SkRect kDstRect = SkRect::MakeWH(SkIntToScalar(256), SkIntT
oScalar(256)); | 217 static const SkRect kDstRect = SkRect::MakeWH(SkIntToScalar(256), SkIntT
oScalar(256)); |
218 static const SkRect kSrcRect = SkRect::MakeWH(SK_Scalar1, SK_Scalar1); | 218 static const SkRect kSrcRect = SkRect::MakeWH(SK_Scalar1, SK_Scalar1); |
219 // We do a PM->UPM draw from dataTex to readTex and read the data. Then
we do a UPM->PM draw | 219 // We do a PM->UPM draw from dataTex to readTex and read the data. Then
we do a UPM->PM draw |
220 // from readTex to tempTex followed by a PM->UPM draw to readTex and fin
ally read the data. | 220 // from readTex to tempTex followed by a PM->UPM draw to readTex and fin
ally read the data. |
221 // We then verify that two reads produced the same values. | 221 // We then verify that two reads produced the same values. |
222 | 222 |
223 SkAutoTUnref<GrFragmentProcessor> pmToUPM1( | 223 SkAutoTUnref<GrFragmentProcessor> pmToUPM1( |
224 SkNEW_ARGS(GrConfigConversionEffect, | 224 SkNEW_ARGS(GrConfigConversionEffect, |
225 (dataTex, false, *pmToUPMRule, SkMatrix::I()))); | 225 (dataTex, false, *pmToUPMRule, SkMatrix::I()))); |
226 SkAutoTUnref<GrFragmentProcessor> upmToPM( | 226 SkAutoTUnref<GrFragmentProcessor> upmToPM( |
227 SkNEW_ARGS(GrConfigConversionEffect, | 227 SkNEW_ARGS(GrConfigConversionEffect, |
228 (readTex, false, *upmToPMRule, SkMatrix::I()))); | 228 (readTex, false, *upmToPMRule, SkMatrix::I()))); |
229 SkAutoTUnref<GrFragmentProcessor> pmToUPM2( | 229 SkAutoTUnref<GrFragmentProcessor> pmToUPM2( |
230 SkNEW_ARGS(GrConfigConversionEffect, | 230 SkNEW_ARGS(GrConfigConversionEffect, |
231 (tempTex, false, *pmToUPMRule, SkMatrix::I()))); | 231 (tempTex, false, *pmToUPMRule, SkMatrix::I()))); |
232 | 232 |
233 context->setRenderTarget(readTex->asRenderTarget()); | |
234 GrPaint paint1; | 233 GrPaint paint1; |
235 paint1.addColorProcessor(pmToUPM1); | 234 paint1.addColorProcessor(pmToUPM1); |
236 context->drawNonAARectToRect(paint1, SkMatrix::I(), kDstRect, kSrcRect); | 235 context->drawNonAARectToRect(readTex->asRenderTarget(), paint1, SkMatrix
::I(), kDstRect, |
| 236 kSrcRect); |
237 | 237 |
238 readTex->readPixels(0, 0, 256, 256, kRGBA_8888_GrPixelConfig, firstRead)
; | 238 readTex->readPixels(0, 0, 256, 256, kRGBA_8888_GrPixelConfig, firstRead)
; |
239 | 239 |
240 context->setRenderTarget(tempTex->asRenderTarget()); | |
241 GrPaint paint2; | 240 GrPaint paint2; |
242 paint2.addColorProcessor(upmToPM); | 241 paint2.addColorProcessor(upmToPM); |
243 context->drawNonAARectToRect(paint2, SkMatrix::I(), kDstRect, kSrcRect); | 242 context->drawNonAARectToRect(tempTex->asRenderTarget(), paint2, SkMatrix
::I(), kDstRect, |
244 context->setRenderTarget(readTex->asRenderTarget()); | 243 kSrcRect); |
245 | 244 |
246 GrPaint paint3; | 245 GrPaint paint3; |
247 paint3.addColorProcessor(pmToUPM2); | 246 paint3.addColorProcessor(pmToUPM2); |
248 context->drawNonAARectToRect(paint3, SkMatrix::I(), kDstRect, kSrcRect); | 247 context->drawNonAARectToRect(readTex->asRenderTarget(), paint3, SkMatrix
::I(), kDstRect, |
| 248 kSrcRect); |
249 | 249 |
250 readTex->readPixels(0, 0, 256, 256, kRGBA_8888_GrPixelConfig, secondRead
); | 250 readTex->readPixels(0, 0, 256, 256, kRGBA_8888_GrPixelConfig, secondRead
); |
251 | 251 |
252 failed = false; | 252 failed = false; |
253 for (int y = 0; y < 256 && !failed; ++y) { | 253 for (int y = 0; y < 256 && !failed; ++y) { |
254 for (int x = 0; x <= y; ++x) { | 254 for (int x = 0; x <= y; ++x) { |
255 if (firstRead[256 * y + x] != secondRead[256 * y + x]) { | 255 if (firstRead[256 * y + x] != secondRead[256 * y + x]) { |
256 failed = true; | 256 failed = true; |
257 break; | 257 break; |
258 } | 258 } |
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280 kNone_PMConversion != pmConversion) { | 280 kNone_PMConversion != pmConversion) { |
281 // The PM conversions assume colors are 0..255 | 281 // The PM conversions assume colors are 0..255 |
282 return NULL; | 282 return NULL; |
283 } | 283 } |
284 return SkNEW_ARGS(GrConfigConversionEffect, (texture, | 284 return SkNEW_ARGS(GrConfigConversionEffect, (texture, |
285 swapRedAndBlue, | 285 swapRedAndBlue, |
286 pmConversion, | 286 pmConversion, |
287 matrix)); | 287 matrix)); |
288 } | 288 } |
289 } | 289 } |
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