Robert Phillips | 9660108 | 2018-05-29 16:13:26 -0400 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2018 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 | |
| 8 | #include "DDLPromiseImageHelper.h" |
| 9 | |
| 10 | #if SK_SUPPORT_GPU |
| 11 | |
| 12 | #include "GrContext.h" |
| 13 | #include "GrContextPriv.h" |
| 14 | #include "GrGpu.h" |
| 15 | #include "SkDeferredDisplayListRecorder.h" |
| 16 | |
| 17 | DDLPromiseImageHelper::PromiseImageCallbackContext::~PromiseImageCallbackContext() { |
| 18 | GrGpu* gpu = fContext->contextPriv().getGpu(); |
| 19 | |
| 20 | if (fBackendTexture.isValid()) { |
| 21 | gpu->deleteTestingOnlyBackendTexture(fBackendTexture); |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | /////////////////////////////////////////////////////////////////////////////////////////////////// |
| 26 | |
| 27 | sk_sp<SkData> DDLPromiseImageHelper::deflateSKP(const SkPicture* inputPicture) { |
| 28 | SkSerialProcs procs; |
| 29 | |
| 30 | procs.fImageCtx = this; |
| 31 | procs.fImageProc = [](SkImage* image, void* ctx) -> sk_sp<SkData> { |
| 32 | auto helper = static_cast<DDLPromiseImageHelper*>(ctx); |
| 33 | |
| 34 | int id = helper->findOrDefineImage(image); |
| 35 | if (id >= 0) { |
| 36 | SkASSERT(helper->isValidID(id)); |
| 37 | return SkData::MakeWithCopy(&id, sizeof(id)); |
| 38 | } |
| 39 | |
| 40 | return nullptr; |
| 41 | }; |
| 42 | |
| 43 | return inputPicture->serialize(&procs); |
| 44 | } |
| 45 | |
| 46 | void DDLPromiseImageHelper::uploadAllToGPU(GrContext* context) { |
| 47 | GrGpu* gpu = context->contextPriv().getGpu(); |
| 48 | SkASSERT(gpu); |
| 49 | |
| 50 | for (int i = 0; i < fImageInfo.count(); ++i) { |
| 51 | sk_sp<PromiseImageCallbackContext> callbackContext( |
| 52 | new PromiseImageCallbackContext(context)); |
| 53 | |
| 54 | const PromiseImageInfo& info = fImageInfo[i]; |
| 55 | |
| 56 | // DDL TODO: how can we tell if we need mipmapping! |
| 57 | callbackContext->setBackendTexture(gpu->createTestingOnlyBackendTexture( |
| 58 | info.fBitmap.getPixels(), |
| 59 | info.fBitmap.width(), |
| 60 | info.fBitmap.height(), |
| 61 | info.fBitmap.colorType(), |
| 62 | info.fBitmap.colorSpace(), |
| 63 | false, GrMipMapped::kNo)); |
| 64 | // The GMs sometimes request too large an image |
| 65 | //SkAssertResult(callbackContext->backendTexture().isValid()); |
| 66 | |
| 67 | // The fImageInfo array gets the creation ref |
| 68 | fImageInfo[i].fCallbackContext = std::move(callbackContext); |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | sk_sp<SkPicture> DDLPromiseImageHelper::reinflateSKP( |
| 73 | SkDeferredDisplayListRecorder* recorder, |
| 74 | SkData* compressedPictureData, |
| 75 | SkTArray<sk_sp<SkImage>>* promiseImages) const { |
| 76 | PerRecorderContext perRecorderContext { recorder, this, promiseImages }; |
| 77 | |
| 78 | SkDeserialProcs procs; |
| 79 | procs.fImageCtx = (void*) &perRecorderContext; |
| 80 | procs.fImageProc = PromiseImageCreator; |
| 81 | |
| 82 | return SkPicture::MakeFromData(compressedPictureData, &procs); |
| 83 | } |
| 84 | |
| 85 | // This generates promise images to replace the indices in the compressed picture. This |
| 86 | // reconstitution is performed separately in each thread so we end up with multiple |
| 87 | // promise images referring to the same GrBackendTexture. |
| 88 | sk_sp<SkImage> DDLPromiseImageHelper::PromiseImageCreator(const void* rawData, |
| 89 | size_t length, void* ctxIn) { |
| 90 | PerRecorderContext* perRecorderContext = static_cast<PerRecorderContext*>(ctxIn); |
| 91 | const DDLPromiseImageHelper* helper = perRecorderContext->fHelper; |
| 92 | SkDeferredDisplayListRecorder* recorder = perRecorderContext->fRecorder; |
| 93 | |
| 94 | SkASSERT(length == sizeof(int)); |
| 95 | |
| 96 | const int* indexPtr = static_cast<const int*>(rawData); |
| 97 | SkASSERT(helper->isValidID(*indexPtr)); |
| 98 | |
| 99 | const DDLPromiseImageHelper::PromiseImageInfo& curImage = helper->getInfo(*indexPtr); |
| 100 | |
| 101 | if (!curImage.fCallbackContext->backendTexture().isValid()) { |
| 102 | // We weren't able to make a backend texture for this SkImage. In this case we create |
| 103 | // a separate bitmap-backed image for each thread. |
| 104 | // Note: we would like to share the same bitmap between all the threads but |
| 105 | // SkBitmap is not thread-safe. |
| 106 | return SkImage::MakeRasterCopy(curImage.fBitmap.pixmap()); |
| 107 | } |
| 108 | SkASSERT(curImage.fIndex == *indexPtr); |
| 109 | |
| 110 | GrBackendFormat backendFormat = curImage.fCallbackContext->backendTexture().format(); |
| 111 | |
| 112 | // Each DDL recorder gets its own ref on the promise callback context for the |
| 113 | // promise images it creates. |
| 114 | // DDL TODO: sort out mipmapping |
| 115 | sk_sp<SkImage> image = recorder->makePromiseTexture( |
| 116 | backendFormat, |
| 117 | curImage.fBitmap.width(), |
| 118 | curImage.fBitmap.height(), |
| 119 | GrMipMapped::kNo, |
| 120 | GrSurfaceOrigin::kTopLeft_GrSurfaceOrigin, |
| 121 | curImage.fBitmap.colorType(), |
| 122 | curImage.fBitmap.alphaType(), |
| 123 | curImage.fBitmap.refColorSpace(), |
| 124 | DDLPromiseImageHelper::PromiseImageFulfillProc, |
| 125 | DDLPromiseImageHelper::PromiseImageReleaseProc, |
| 126 | DDLPromiseImageHelper::PromiseImageDoneProc, |
| 127 | (void*) SkSafeRef(curImage.fCallbackContext.get())); |
| 128 | perRecorderContext->fPromiseImages->push_back(image); |
| 129 | SkASSERT(image); |
| 130 | return image; |
| 131 | } |
| 132 | |
| 133 | int DDLPromiseImageHelper::findImage(SkImage* image) const { |
| 134 | for (int i = 0; i < fImageInfo.count(); ++i) { |
| 135 | if (fImageInfo[i].fOriginalUniqueID == image->uniqueID()) { // trying to dedup here |
| 136 | SkASSERT(fImageInfo[i].fIndex == i); |
| 137 | SkASSERT(this->isValidID(i) && this->isValidID(fImageInfo[i].fIndex)); |
| 138 | return i; |
| 139 | } |
| 140 | } |
| 141 | return -1; |
| 142 | } |
| 143 | |
| 144 | int DDLPromiseImageHelper::addImage(SkImage* image) { |
| 145 | sk_sp<SkImage> rasterImage = image->makeRasterImage(); // force decoding of lazy images |
| 146 | |
| 147 | SkImageInfo ii = SkImageInfo::Make(rasterImage->width(), rasterImage->height(), |
| 148 | rasterImage->colorType(), rasterImage->alphaType(), |
| 149 | rasterImage->refColorSpace()); |
| 150 | |
| 151 | SkBitmap bm; |
| 152 | bm.allocPixels(ii); |
| 153 | |
| 154 | if (!rasterImage->readPixels(bm.pixmap(), 0, 0)) { |
| 155 | return -1; |
| 156 | } |
| 157 | |
| 158 | bm.setImmutable(); |
| 159 | |
| 160 | PromiseImageInfo& newImageInfo = fImageInfo.push_back(); |
| 161 | newImageInfo.fIndex = fImageInfo.count()-1; |
| 162 | newImageInfo.fOriginalUniqueID = image->uniqueID(); |
| 163 | newImageInfo.fBitmap = bm; |
| 164 | /* fCallbackContext is filled in by uploadAllToGPU */ |
| 165 | |
| 166 | return fImageInfo.count()-1; |
| 167 | } |
| 168 | |
| 169 | int DDLPromiseImageHelper::findOrDefineImage(SkImage* image) { |
| 170 | int preExistingID = this->findImage(image); |
| 171 | if (preExistingID >= 0) { |
| 172 | SkASSERT(this->isValidID(preExistingID)); |
| 173 | return preExistingID; |
| 174 | } |
| 175 | |
| 176 | int newID = this->addImage(image); |
| 177 | SkASSERT(this->isValidID(newID)); |
| 178 | return newID; |
| 179 | } |
| 180 | |
| 181 | #endif |