GrContext.cpp revision d83ec0441279b79551b4ecb4598696249ea55145 
1/*
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
8#include "GrContext.h"
9#include "GrClip.h"
10#include "GrContextOptions.h"
11#include "GrContextPriv.h"
12#include "GrDrawingManager.h"
13#include "GrRenderTargetContext.h"
14#include "GrRenderTargetProxy.h"
15#include "GrResourceCache.h"
16#include "GrResourceProvider.h"
17#include "GrSemaphore.h"
18#include "GrSoftwarePathRenderer.h"
19#include "GrSurfaceContext.h"
20#include "GrSurfacePriv.h"
21#include "GrSurfaceProxyPriv.h"
22#include "GrTextureContext.h"
23#include "SkConvertPixels.h"
24#include "SkGr.h"
25#include "SkUnPreMultiplyPriv.h"
26#include "effects/GrConfigConversionEffect.h"
27#include "text/GrTextBlobCache.h"
28
29#define ASSERT_OWNED_PROXY(P) \
30SkASSERT(!(P) || !((P)->priv().peekTexture()) || (P)->priv().peekTexture()->getContext() == this)
31#define ASSERT_OWNED_PROXY_PRIV(P) \
32SkASSERT(!(P) || !((P)->priv().peekTexture()) || (P)->priv().peekTexture()->getContext() == fContext)
33
34#define ASSERT_OWNED_RESOURCE(R) SkASSERT(!(R) || (R)->getContext() == this)
35#define ASSERT_SINGLE_OWNER \
36    SkDEBUGCODE(GrSingleOwner::AutoEnforce debug_SingleOwner(&fSingleOwner);)
37#define ASSERT_SINGLE_OWNER_PRIV \
38    SkDEBUGCODE(GrSingleOwner::AutoEnforce debug_SingleOwner(&fContext->fSingleOwner);)
39#define RETURN_IF_ABANDONED if (fDrawingManager->wasAbandoned()) { return; }
40#define RETURN_IF_ABANDONED_PRIV if (fContext->fDrawingManager->wasAbandoned()) { return; }
41#define RETURN_FALSE_IF_ABANDONED if (fDrawingManager->wasAbandoned()) { return false; }
42#define RETURN_FALSE_IF_ABANDONED_PRIV if (fContext->fDrawingManager->wasAbandoned()) { return false; }
43#define RETURN_NULL_IF_ABANDONED if (fDrawingManager->wasAbandoned()) { return nullptr; }
44
45////////////////////////////////////////////////////////////////////////////////
46
47GrContext* GrContext::Create(GrBackend backend, GrBackendContext backendContext) {
48    GrContextOptions defaultOptions;
49    return Create(backend, backendContext, defaultOptions);
50}
51
52GrContext* GrContext::Create(GrBackend backend, GrBackendContext backendContext,
53                             const GrContextOptions& options) {
54    GrContext* context = new GrContext;
55
56    if (context->init(backend, backendContext, options)) {
57        return context;
58    } else {
59        context->unref();
60        return nullptr;
61    }
62}
63
64static int32_t gNextID = 1;
65static int32_t next_id() {
66    int32_t id;
67    do {
68        id = sk_atomic_inc(&gNextID);
69    } while (id == SK_InvalidGenID);
70    return id;
71}
72
73GrContext::GrContext() : fUniqueID(next_id()) {
74    fGpu = nullptr;
75    fCaps = nullptr;
76    fResourceCache = nullptr;
77    fResourceProvider = nullptr;
78    fAtlasGlyphCache = nullptr;
79}
80
81bool GrContext::init(GrBackend backend, GrBackendContext backendContext,
82                     const GrContextOptions& options) {
83    ASSERT_SINGLE_OWNER
84    SkASSERT(!fGpu);
85
86    fGpu = GrGpu::Create(backend, backendContext, options, this);
87    if (!fGpu) {
88        return false;
89    }
90    this->initCommon(options);
91    return true;
92}
93
94void GrContext::initCommon(const GrContextOptions& options) {
95    ASSERT_SINGLE_OWNER
96
97    fCaps = SkRef(fGpu->caps());
98    fResourceCache = new GrResourceCache(fCaps);
99    fResourceProvider = new GrResourceProvider(fGpu, fResourceCache, &fSingleOwner);
100
101    fDisableGpuYUVConversion = options.fDisableGpuYUVConversion;
102    fDidTestPMConversions = false;
103
104    GrRenderTargetOpList::Options rtOpListOptions;
105    rtOpListOptions.fMaxOpCombineLookback = options.fMaxOpCombineLookback;
106    rtOpListOptions.fMaxOpCombineLookahead = options.fMaxOpCombineLookahead;
107    GrPathRendererChain::Options prcOptions;
108    prcOptions.fAllowPathMaskCaching = options.fAllowPathMaskCaching;
109    prcOptions.fGpuPathRenderers = options.fGpuPathRenderers;
110    fDrawingManager.reset(new GrDrawingManager(this, rtOpListOptions, prcOptions,
111                                               options.fImmediateMode, &fSingleOwner));
112
113    fAtlasGlyphCache = new GrAtlasGlyphCache(this);
114
115    fTextBlobCache.reset(new GrTextBlobCache(TextBlobCacheOverBudgetCB, this));
116}
117
118GrContext::~GrContext() {
119    ASSERT_SINGLE_OWNER
120
121    if (!fGpu) {
122        SkASSERT(!fCaps);
123        return;
124    }
125
126    this->flush();
127
128    fDrawingManager->cleanup();
129
130    for (int i = 0; i < fCleanUpData.count(); ++i) {
131        (*fCleanUpData[i].fFunc)(this, fCleanUpData[i].fInfo);
132    }
133
134    delete fResourceProvider;
135    delete fResourceCache;
136    delete fAtlasGlyphCache;
137
138    fGpu->unref();
139    fCaps->unref();
140}
141
142sk_sp<GrContextThreadSafeProxy> GrContext::threadSafeProxy() {
143    if (!fThreadSafeProxy) {
144        fThreadSafeProxy.reset(new GrContextThreadSafeProxy(sk_ref_sp(fCaps), this->uniqueID()));
145    }
146    return fThreadSafeProxy;
147}
148
149void GrContext::abandonContext() {
150    ASSERT_SINGLE_OWNER
151
152    fResourceProvider->abandon();
153
154    // Need to abandon the drawing manager first so all the render targets
155    // will be released/forgotten before they too are abandoned.
156    fDrawingManager->abandon();
157
158    // abandon first to so destructors
159    // don't try to free the resources in the API.
160    fResourceCache->abandonAll();
161
162    fGpu->disconnect(GrGpu::DisconnectType::kAbandon);
163
164    fAtlasGlyphCache->freeAll();
165    fTextBlobCache->freeAll();
166}
167
168void GrContext::releaseResourcesAndAbandonContext() {
169    ASSERT_SINGLE_OWNER
170
171    fResourceProvider->abandon();
172
173    // Need to abandon the drawing manager first so all the render targets
174    // will be released/forgotten before they too are abandoned.
175    fDrawingManager->abandon();
176
177    // Release all resources in the backend 3D API.
178    fResourceCache->releaseAll();
179
180    fGpu->disconnect(GrGpu::DisconnectType::kCleanup);
181
182    fAtlasGlyphCache->freeAll();
183    fTextBlobCache->freeAll();
184}
185
186void GrContext::resetContext(uint32_t state) {
187    ASSERT_SINGLE_OWNER
188    fGpu->markContextDirty(state);
189}
190
191void GrContext::freeGpuResources() {
192    ASSERT_SINGLE_OWNER
193
194    this->flush();
195
196    fAtlasGlyphCache->freeAll();
197
198    fDrawingManager->freeGpuResources();
199
200    fResourceCache->purgeAllUnlocked();
201}
202
203void GrContext::purgeResourcesNotUsedInMs(std::chrono::milliseconds ms) {
204    ASSERT_SINGLE_OWNER
205    fResourceCache->purgeResourcesNotUsedSince(GrStdSteadyClock::now() - ms);
206}
207
208void GrContext::getResourceCacheUsage(int* resourceCount, size_t* resourceBytes) const {
209    ASSERT_SINGLE_OWNER
210
211    if (resourceCount) {
212        *resourceCount = fResourceCache->getBudgetedResourceCount();
213    }
214    if (resourceBytes) {
215        *resourceBytes = fResourceCache->getBudgetedResourceBytes();
216    }
217}
218
219////////////////////////////////////////////////////////////////////////////////
220
221void GrContext::TextBlobCacheOverBudgetCB(void* data) {
222    SkASSERT(data);
223    // TextBlobs are drawn at the SkGpuDevice level, therefore they cannot rely on
224    // GrRenderTargetContext to perform a necessary flush.  The solution is to move drawText calls
225    // to below the GrContext level, but this is not trivial because they call drawPath on
226    // SkGpuDevice.
227    GrContext* context = reinterpret_cast<GrContext*>(data);
228    context->flush();
229}
230
231////////////////////////////////////////////////////////////////////////////////
232
233void GrContext::flush() {
234    ASSERT_SINGLE_OWNER
235    RETURN_IF_ABANDONED
236
237    fDrawingManager->flush(nullptr);
238}
239
240void GrContextPriv::flush(GrSurfaceProxy* proxy) {
241    ASSERT_SINGLE_OWNER_PRIV
242    RETURN_IF_ABANDONED_PRIV
243    ASSERT_OWNED_PROXY_PRIV(proxy);
244
245    fContext->fDrawingManager->flush(proxy);
246}
247
248bool sw_convert_to_premul(GrPixelConfig srcConfig, int width, int height, size_t inRowBytes,
249                          const void* inPixels, size_t outRowBytes, void* outPixels) {
250    SkColorType colorType;
251    if (!GrPixelConfigToColorType(srcConfig, &colorType) ||
252        4 != SkColorTypeBytesPerPixel(colorType))
253    {
254        return false;
255    }
256
257    for (int y = 0; y < height; y++) {
258        SkOpts::RGBA_to_rgbA((uint32_t*) outPixels, inPixels, width);
259        outPixels = SkTAddOffset<void>(outPixels, outRowBytes);
260        inPixels = SkTAddOffset<const void>(inPixels, inRowBytes);
261    }
262
263    return true;
264}
265
266static bool valid_unpremul_config(GrPixelConfig config) {
267    return GrPixelConfigIs8888Unorm(config) || kRGBA_half_GrPixelConfig == config;
268}
269
270bool GrContextPriv::writeSurfacePixels(GrSurfaceProxy* srcProxy, SkColorSpace* dstColorSpace,
271                                       int left, int top, int width, int height,
272                                       GrPixelConfig srcConfig, SkColorSpace* srcColorSpace,
273                                       const void* buffer, size_t rowBytes,
274                                       uint32_t pixelOpsFlags) {
275    // TODO: Color space conversion
276
277    ASSERT_SINGLE_OWNER_PRIV
278    RETURN_FALSE_IF_ABANDONED_PRIV
279    ASSERT_OWNED_PROXY_PRIV(srcProxy);
280    SkASSERT(srcProxy);
281    GR_AUDIT_TRAIL_AUTO_FRAME(&fContext->fAuditTrail, "GrContextPriv::writeSurfacePixels");
282
283    GrSurface* surface = srcProxy->instantiate(fContext->resourceProvider());
284    if (!surface) {
285        return false;
286    }
287
288    fContext->testPMConversionsIfNecessary(pixelOpsFlags);
289
290    // Trim the params here so that if we wind up making a temporary surface it can be as small as
291    // necessary and because GrGpu::getWritePixelsInfo requires it.
292    if (!GrSurfacePriv::AdjustWritePixelParams(surface->width(), surface->height(),
293                                               GrBytesPerPixel(srcConfig), &left, &top, &width,
294                                               &height, &buffer, &rowBytes)) {
295        return false;
296    }
297
298    bool applyPremulToSrc = SkToBool(kUnpremul_PixelOpsFlag & pixelOpsFlags);
299    if (applyPremulToSrc && !valid_unpremul_config(srcConfig)) {
300        return false;
301    }
302    // We don't allow conversion between integer configs and float/fixed configs.
303    if (GrPixelConfigIsSint(surface->config()) != GrPixelConfigIsSint(srcConfig)) {
304        return false;
305    }
306
307    GrGpu::DrawPreference drawPreference = GrGpu::kNoDraw_DrawPreference;
308    // Don't prefer to draw for the conversion (and thereby access a texture from the cache) when
309    // we've already determined that there isn't a roundtrip preserving conversion processor pair.
310    if (applyPremulToSrc && fContext->validPMUPMConversionExists(srcConfig)) {
311        drawPreference = GrGpu::kCallerPrefersDraw_DrawPreference;
312    }
313
314    GrGpu::WritePixelTempDrawInfo tempDrawInfo;
315    if (!fContext->fGpu->getWritePixelsInfo(surface, width, height, srcConfig,
316                                            &drawPreference, &tempDrawInfo)) {
317        return false;
318    }
319
320    if (!(kDontFlush_PixelOpsFlag & pixelOpsFlags) && surface->surfacePriv().hasPendingIO()) {
321        this->flush(nullptr); // MDB TODO: tighten this
322    }
323
324    sk_sp<GrTextureProxy> tempProxy;
325    if (GrGpu::kNoDraw_DrawPreference != drawPreference) {
326        tempProxy = GrSurfaceProxy::MakeDeferred(fContext->resourceProvider(),
327                                                 tempDrawInfo.fTempSurfaceDesc,
328                                                 SkBackingFit::kApprox,
329                                                 SkBudgeted::kYes);
330        if (!tempProxy && GrGpu::kRequireDraw_DrawPreference == drawPreference) {
331            return false;
332        }
333    }
334
335    // temp buffer for doing sw premul conversion, if needed.
336    SkAutoSTMalloc<128 * 128, uint32_t> tmpPixels(0);
337    if (tempProxy) {
338        sk_sp<GrFragmentProcessor> texFP = GrSimpleTextureEffect::Make(
339                fContext->resourceProvider(), tempProxy, nullptr, SkMatrix::I());
340        sk_sp<GrFragmentProcessor> fp;
341        if (applyPremulToSrc) {
342            fp = fContext->createUPMToPMEffect(texFP, tempProxy->config());
343            if (fp) {
344                // We no longer need to do this on CPU before the upload.
345                applyPremulToSrc = false;
346            } else if (GrGpu::kCallerPrefersDraw_DrawPreference == drawPreference) {
347                // We only wanted to do the draw to perform the premul so don't bother.
348                tempProxy.reset(nullptr);
349            }
350        }
351        if (tempProxy) {
352            if (!fp) {
353                fp = std::move(texFP);
354            }
355            fp = GrFragmentProcessor::SwizzleOutput(std::move(fp), tempDrawInfo.fSwizzle);
356            SkASSERT(fp);
357
358            if (tempProxy->priv().hasPendingIO()) {
359                this->flush(tempProxy.get());
360            }
361            GrTexture* texture = tempProxy->instantiate(fContext->resourceProvider());
362            if (!texture) {
363                return false;
364            }
365            if (applyPremulToSrc) {
366                size_t tmpRowBytes = 4 * width;
367                tmpPixels.reset(width * height);
368                if (!sw_convert_to_premul(srcConfig, width, height, rowBytes, buffer, tmpRowBytes,
369                                          tmpPixels.get())) {
370                    return false;
371                }
372                rowBytes = tmpRowBytes;
373                buffer = tmpPixels.get();
374                applyPremulToSrc = false;
375            }
376            if (!fContext->fGpu->writePixels(texture, 0, 0, width, height,
377                                             tempDrawInfo.fWriteConfig, buffer,
378                                             rowBytes)) {
379                return false;
380            }
381            SkMatrix matrix;
382            matrix.setTranslate(SkIntToScalar(left), SkIntToScalar(top));
383            // TODO: Need to decide the semantics of this function for color spaces. Do we support
384            // conversion from a passed-in color space? For now, specifying nullptr means that this
385            // path will do no conversion, so it will match the behavior of the non-draw path.
386            GrRenderTarget* renderTarget = surface->asRenderTarget();
387            SkASSERT(renderTarget);
388            sk_sp<GrRenderTargetContext> renderTargetContext(
389                this->makeWrappedRenderTargetContext(sk_ref_sp(renderTarget), nullptr));
390            if (!renderTargetContext) {
391                return false;
392            }
393            GrPaint paint;
394            paint.addColorFragmentProcessor(std::move(fp));
395            paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
396            paint.setAllowSRGBInputs(true);
397            SkRect rect = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height));
398            renderTargetContext->drawRect(GrNoClip(), std::move(paint), GrAA::kNo, matrix, rect,
399                                          nullptr);
400
401            if (kFlushWrites_PixelOp & pixelOpsFlags) {
402                this->flushSurfaceWrites(renderTargetContext->asRenderTargetProxy());
403            }
404        }
405    }
406    if (!tempProxy) {
407        if (applyPremulToSrc) {
408            size_t tmpRowBytes = 4 * width;
409            tmpPixels.reset(width * height);
410            if (!sw_convert_to_premul(srcConfig, width, height, rowBytes, buffer, tmpRowBytes,
411                                      tmpPixels.get())) {
412                return false;
413            }
414            rowBytes = tmpRowBytes;
415            buffer = tmpPixels.get();
416            applyPremulToSrc = false;
417        }
418        return fContext->fGpu->writePixels(surface, left, top, width, height, srcConfig,
419                                           buffer, rowBytes);
420    }
421    return true;
422}
423
424bool GrContextPriv::readSurfacePixels(GrSurfaceProxy* srcProxy, SkColorSpace* srcColorSpace,
425                                      int left, int top, int width, int height,
426                                      GrPixelConfig dstConfig, SkColorSpace* dstColorSpace,
427                                      void* buffer, size_t rowBytes, uint32_t flags) {
428    // TODO: Color space conversion
429
430    ASSERT_SINGLE_OWNER_PRIV
431    RETURN_FALSE_IF_ABANDONED_PRIV
432    ASSERT_OWNED_PROXY_PRIV(srcProxy);
433    SkASSERT(srcProxy);
434    GR_AUDIT_TRAIL_AUTO_FRAME(&fContext->fAuditTrail, "GrContextPriv::readSurfacePixels");
435
436    // MDB TODO: delay this instantiation until later in the method
437    GrSurface* src = srcProxy->instantiate(fContext->resourceProvider());
438    if (!src) {
439        return false;
440    }
441
442    fContext->testPMConversionsIfNecessary(flags);
443
444    // Adjust the params so that if we wind up using an intermediate surface we've already done
445    // all the trimming and the temporary can be the min size required.
446    if (!GrSurfacePriv::AdjustReadPixelParams(src->width(), src->height(),
447                                              GrBytesPerPixel(dstConfig), &left,
448                                              &top, &width, &height, &buffer, &rowBytes)) {
449        return false;
450    }
451
452    if (!(kDontFlush_PixelOpsFlag & flags) && src->surfacePriv().hasPendingWrite()) {
453        this->flush(nullptr); // MDB TODO: tighten this
454    }
455
456    bool unpremul = SkToBool(kUnpremul_PixelOpsFlag & flags);
457    if (unpremul && !valid_unpremul_config(dstConfig)) {
458        // The unpremul flag is only allowed for 8888 and F16 configs.
459        return false;
460    }
461    // We don't allow conversion between integer configs and float/fixed configs.
462    if (GrPixelConfigIsSint(src->config()) != GrPixelConfigIsSint(dstConfig)) {
463        return false;
464    }
465
466    GrGpu::DrawPreference drawPreference = GrGpu::kNoDraw_DrawPreference;
467    // Don't prefer to draw for the conversion (and thereby access a texture from the cache) when
468    // we've already determined that there isn't a roundtrip preserving conversion processor pair.
469    if (unpremul && fContext->validPMUPMConversionExists(src->config())) {
470        drawPreference = GrGpu::kCallerPrefersDraw_DrawPreference;
471    }
472
473    GrGpu::ReadPixelTempDrawInfo tempDrawInfo;
474    if (!fContext->fGpu->getReadPixelsInfo(src, width, height, rowBytes, dstConfig,
475                                           &drawPreference, &tempDrawInfo)) {
476        return false;
477    }
478
479    sk_sp<GrSurfaceProxy> proxyToRead = sk_ref_sp(srcProxy);
480    bool didTempDraw = false;
481    if (GrGpu::kNoDraw_DrawPreference != drawPreference) {
482        if (SkBackingFit::kExact == tempDrawInfo.fTempSurfaceFit) {
483            // We only respect this when the entire src is being read. Otherwise we can trigger too
484            // many odd ball texture sizes and trash the cache.
485            if (width != src->width() || height != src->height()) {
486                tempDrawInfo.fTempSurfaceFit= SkBackingFit::kApprox;
487            }
488        }
489        // TODO: Need to decide the semantics of this function for color spaces. Do we support
490        // conversion to a passed-in color space? For now, specifying nullptr means that this
491        // path will do no conversion, so it will match the behavior of the non-draw path.
492        sk_sp<GrRenderTargetContext> tempRTC = fContext->makeDeferredRenderTargetContext(
493                                                           tempDrawInfo.fTempSurfaceFit,
494                                                           tempDrawInfo.fTempSurfaceDesc.fWidth,
495                                                           tempDrawInfo.fTempSurfaceDesc.fHeight,
496                                                           tempDrawInfo.fTempSurfaceDesc.fConfig,
497                                                           nullptr,
498                                                           tempDrawInfo.fTempSurfaceDesc.fSampleCnt,
499                                                           tempDrawInfo.fTempSurfaceDesc.fOrigin);
500        if (tempRTC) {
501            SkMatrix textureMatrix = SkMatrix::MakeTrans(SkIntToScalar(left), SkIntToScalar(top));
502            sk_sp<GrTextureProxy> proxy = sk_ref_sp(srcProxy->asTextureProxy());
503            sk_sp<GrFragmentProcessor> texFP = GrSimpleTextureEffect::Make(
504                    fContext->resourceProvider(), proxy, nullptr, textureMatrix);
505            sk_sp<GrFragmentProcessor> fp;
506            if (unpremul) {
507                fp = fContext->createPMToUPMEffect(texFP, proxy->config());
508                if (fp) {
509                    // We no longer need to do this on CPU after the read back.
510                    unpremul = false;
511                } else if (GrGpu::kCallerPrefersDraw_DrawPreference == drawPreference) {
512                    // We only wanted to do the draw to perform the unpremul so don't bother.
513                    tempRTC.reset(nullptr);
514                }
515            }
516            if (tempRTC) {
517                if (!fp) {
518                    fp = std::move(texFP);
519                }
520                fp = GrFragmentProcessor::SwizzleOutput(std::move(fp), tempDrawInfo.fSwizzle);
521                SkASSERT(fp);
522
523                GrPaint paint;
524                paint.addColorFragmentProcessor(std::move(fp));
525                paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
526                paint.setAllowSRGBInputs(true);
527                SkRect rect = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height));
528                tempRTC->drawRect(GrNoClip(), std::move(paint), GrAA::kNo, SkMatrix::I(), rect,
529                                  nullptr);
530                proxyToRead = tempRTC->asTextureProxyRef();
531                left = 0;
532                top = 0;
533                didTempDraw = true;
534            }
535        }
536    }
537
538    if (!proxyToRead) {
539        return false;
540    }
541
542    GrSurface* surfaceToRead = proxyToRead->instantiate(fContext->resourceProvider());
543    if (!surfaceToRead) {
544        return false;
545    }
546
547    if (GrGpu::kRequireDraw_DrawPreference == drawPreference && !didTempDraw) {
548        return false;
549    }
550    GrPixelConfig configToRead = dstConfig;
551    if (didTempDraw) {
552        this->flushSurfaceWrites(proxyToRead.get());
553        configToRead = tempDrawInfo.fReadConfig;
554    }
555    if (!fContext->fGpu->readPixels(surfaceToRead, left, top, width, height, configToRead,
556                                    buffer, rowBytes)) {
557        return false;
558    }
559
560    // Perform umpremul conversion if we weren't able to perform it as a draw.
561    if (unpremul) {
562        SkColorType colorType;
563        if (!GrPixelConfigToColorType(dstConfig, &colorType) ||
564            4 != SkColorTypeBytesPerPixel(colorType))
565        {
566            return false;
567        }
568
569        for (int y = 0; y < height; y++) {
570            SkUnpremultiplyRow<false>((uint32_t*) buffer, (const uint32_t*) buffer, width);
571            buffer = SkTAddOffset<void>(buffer, rowBytes);
572        }
573    }
574    return true;
575}
576
577void GrContextPriv::prepareSurfaceForExternalIO(GrSurfaceProxy* proxy) {
578    ASSERT_SINGLE_OWNER_PRIV
579    RETURN_IF_ABANDONED_PRIV
580    SkASSERT(proxy);
581    ASSERT_OWNED_PROXY_PRIV(proxy);
582    fContext->fDrawingManager->prepareSurfaceForExternalIO(proxy);
583}
584
585void GrContextPriv::flushSurfaceWrites(GrSurfaceProxy* proxy) {
586    ASSERT_SINGLE_OWNER_PRIV
587    RETURN_IF_ABANDONED_PRIV
588    SkASSERT(proxy);
589    ASSERT_OWNED_PROXY_PRIV(proxy);
590    if (proxy->priv().hasPendingWrite()) {
591        this->flush(proxy);
592    }
593}
594
595void GrContextPriv::flushSurfaceIO(GrSurfaceProxy* proxy) {
596    ASSERT_SINGLE_OWNER_PRIV
597    RETURN_IF_ABANDONED_PRIV
598    SkASSERT(proxy);
599    ASSERT_OWNED_PROXY_PRIV(proxy);
600    if (proxy->priv().hasPendingIO()) {
601        this->flush(proxy);
602    }
603}
604
605////////////////////////////////////////////////////////////////////////////////
606int GrContext::getRecommendedSampleCount(GrPixelConfig config,
607                                         SkScalar dpi) const {
608    ASSERT_SINGLE_OWNER
609
610    if (!this->caps()->isConfigRenderable(config, true)) {
611        return 0;
612    }
613    int chosenSampleCount = 0;
614    if (fGpu->caps()->shaderCaps()->pathRenderingSupport()) {
615        if (dpi >= 250.0f) {
616            chosenSampleCount = 4;
617        } else {
618            chosenSampleCount = 16;
619        }
620    }
621    return chosenSampleCount <= fGpu->caps()->maxSampleCount() ? chosenSampleCount : 0;
622}
623
624sk_sp<GrRenderTargetContext> GrContextPriv::makeWrappedRenderTargetContext(
625                                                               sk_sp<GrRenderTarget> rt,
626                                                               sk_sp<SkColorSpace> colorSpace,
627                                                               const SkSurfaceProps* surfaceProps) {
628    ASSERT_SINGLE_OWNER_PRIV
629
630    sk_sp<GrSurfaceProxy> proxy(GrSurfaceProxy::MakeWrapped(std::move(rt)));
631    if (!proxy) {
632        return nullptr;
633    }
634
635    return this->drawingManager()->makeRenderTargetContext(std::move(proxy),
636                                                           std::move(colorSpace),
637                                                           surfaceProps);
638}
639
640sk_sp<GrSurfaceContext> GrContextPriv::makeWrappedSurfaceContext(sk_sp<GrSurfaceProxy> proxy,
641                                                                 sk_sp<SkColorSpace> colorSpace) {
642    ASSERT_SINGLE_OWNER_PRIV
643
644    if (proxy->asRenderTargetProxy()) {
645        return this->drawingManager()->makeRenderTargetContext(std::move(proxy),
646                                                               std::move(colorSpace), nullptr);
647    } else {
648        SkASSERT(proxy->asTextureProxy());
649        return this->drawingManager()->makeTextureContext(std::move(proxy), std::move(colorSpace));
650    }
651}
652
653sk_sp<GrSurfaceContext> GrContextPriv::makeWrappedSurfaceContext(sk_sp<GrSurface> surface) {
654    ASSERT_SINGLE_OWNER_PRIV
655
656    sk_sp<GrSurfaceProxy> proxy(GrSurfaceProxy::MakeWrapped(std::move(surface)));
657    if (!proxy) {
658        return nullptr;
659    }
660
661    return this->makeWrappedSurfaceContext(std::move(proxy), nullptr);
662}
663
664sk_sp<GrSurfaceContext> GrContextPriv::makeDeferredSurfaceContext(const GrSurfaceDesc& dstDesc,
665                                                                  SkBackingFit fit,
666                                                                  SkBudgeted isDstBudgeted) {
667
668    sk_sp<GrTextureProxy> proxy = GrSurfaceProxy::MakeDeferred(fContext->resourceProvider(),
669                                                               dstDesc, fit, isDstBudgeted);
670    if (!proxy) {
671        return nullptr;
672    }
673
674    return this->makeWrappedSurfaceContext(std::move(proxy), nullptr);
675}
676
677sk_sp<GrSurfaceContext> GrContextPriv::makeBackendSurfaceContext(const GrBackendTextureDesc& desc,
678                                                                 sk_sp<SkColorSpace> colorSpace) {
679    ASSERT_SINGLE_OWNER_PRIV
680
681    sk_sp<GrSurface> surface(fContext->resourceProvider()->wrapBackendTexture(desc));
682    if (!surface) {
683        return nullptr;
684    }
685
686    sk_sp<GrSurfaceProxy> proxy(GrSurfaceProxy::MakeWrapped(std::move(surface)));
687    if (!proxy) {
688        return nullptr;
689    }
690
691    return this->makeWrappedSurfaceContext(std::move(proxy), std::move(colorSpace));
692}
693
694sk_sp<GrRenderTargetContext> GrContextPriv::makeBackendTextureRenderTargetContext(
695                                                                   const GrBackendTextureDesc& desc,
696                                                                   sk_sp<SkColorSpace> colorSpace,
697                                                                   const SkSurfaceProps* props) {
698    ASSERT_SINGLE_OWNER_PRIV
699    SkASSERT(desc.fFlags & kRenderTarget_GrBackendTextureFlag);
700
701    sk_sp<GrSurface> surface(fContext->resourceProvider()->wrapBackendTexture(desc));
702    if (!surface) {
703        return nullptr;
704    }
705
706    sk_sp<GrSurfaceProxy> proxy(GrSurfaceProxy::MakeWrapped(std::move(surface)));
707    if (!proxy) {
708        return nullptr;
709    }
710
711    return this->drawingManager()->makeRenderTargetContext(std::move(proxy),
712                                                           std::move(colorSpace), props);
713}
714
715sk_sp<GrRenderTargetContext> GrContextPriv::makeBackendRenderTargetRenderTargetContext(
716                                                const GrBackendRenderTargetDesc& desc,
717                                                sk_sp<SkColorSpace> colorSpace,
718                                                const SkSurfaceProps* surfaceProps) {
719    ASSERT_SINGLE_OWNER_PRIV
720
721    sk_sp<GrRenderTarget> rt(fContext->resourceProvider()->wrapBackendRenderTarget(desc));
722    if (!rt) {
723        return nullptr;
724    }
725
726    sk_sp<GrSurfaceProxy> proxy(GrSurfaceProxy::MakeWrapped(std::move(rt)));
727    if (!proxy) {
728        return nullptr;
729    }
730
731    return this->drawingManager()->makeRenderTargetContext(std::move(proxy),
732                                                           std::move(colorSpace),
733                                                           surfaceProps);
734}
735
736sk_sp<GrRenderTargetContext> GrContextPriv::makeBackendTextureAsRenderTargetRenderTargetContext(
737                                                     const GrBackendTextureDesc& desc,
738                                                     sk_sp<SkColorSpace> colorSpace,
739                                                     const SkSurfaceProps* surfaceProps) {
740    ASSERT_SINGLE_OWNER_PRIV
741    SkASSERT(desc.fFlags & kRenderTarget_GrBackendTextureFlag);
742
743    sk_sp<GrSurface> surface(fContext->resourceProvider()->wrapBackendTextureAsRenderTarget(desc));
744    if (!surface) {
745        return nullptr;
746    }
747
748    sk_sp<GrSurfaceProxy> proxy(GrSurfaceProxy::MakeWrapped(std::move(surface)));
749    if (!proxy) {
750        return nullptr;
751    }
752
753    return this->drawingManager()->makeRenderTargetContext(std::move(proxy),
754                                                           std::move(colorSpace),
755                                                           surfaceProps);
756}
757
758void GrContextPriv::addPreFlushCallbackObject(sk_sp<GrPreFlushCallbackObject> preFlushCBObject) {
759    fContext->fDrawingManager->addPreFlushCallbackObject(std::move(preFlushCBObject));
760}
761
762
763static inline GrPixelConfig GrPixelConfigFallback(GrPixelConfig config) {
764    switch (config) {
765        case kAlpha_8_GrPixelConfig:
766        case kRGB_565_GrPixelConfig:
767        case kRGBA_4444_GrPixelConfig:
768        case kBGRA_8888_GrPixelConfig:
769            return kRGBA_8888_GrPixelConfig;
770        case kSBGRA_8888_GrPixelConfig:
771            return kSRGBA_8888_GrPixelConfig;
772        case kAlpha_half_GrPixelConfig:
773            return kRGBA_half_GrPixelConfig;
774        default:
775            return kUnknown_GrPixelConfig;
776    }
777}
778
779sk_sp<GrRenderTargetContext> GrContext::makeDeferredRenderTargetContextWithFallback(
780                                                                 SkBackingFit fit,
781                                                                 int width, int height,
782                                                                 GrPixelConfig config,
783                                                                 sk_sp<SkColorSpace> colorSpace,
784                                                                 int sampleCnt,
785                                                                 GrSurfaceOrigin origin,
786                                                                 const SkSurfaceProps* surfaceProps,
787                                                                 SkBudgeted budgeted) {
788    if (!this->caps()->isConfigRenderable(config, sampleCnt > 0)) {
789        config = GrPixelConfigFallback(config);
790    }
791
792    return this->makeDeferredRenderTargetContext(fit, width, height, config, std::move(colorSpace),
793                                                 sampleCnt, origin, surfaceProps, budgeted);
794}
795
796sk_sp<GrRenderTargetContext> GrContext::makeDeferredRenderTargetContext(
797                                                        SkBackingFit fit,
798                                                        int width, int height,
799                                                        GrPixelConfig config,
800                                                        sk_sp<SkColorSpace> colorSpace,
801                                                        int sampleCnt,
802                                                        GrSurfaceOrigin origin,
803                                                        const SkSurfaceProps* surfaceProps,
804                                                        SkBudgeted budgeted) {
805    SkASSERT(kDefault_GrSurfaceOrigin != origin);
806
807    GrSurfaceDesc desc;
808    desc.fFlags = kRenderTarget_GrSurfaceFlag;
809    desc.fOrigin = origin;
810    desc.fWidth = width;
811    desc.fHeight = height;
812    desc.fConfig = config;
813    desc.fSampleCnt = sampleCnt;
814
815    sk_sp<GrTextureProxy> rtp = GrSurfaceProxy::MakeDeferred(this->resourceProvider(),
816                                                             desc, fit, budgeted);
817    if (!rtp) {
818        return nullptr;
819    }
820
821    return fDrawingManager->makeRenderTargetContext(std::move(rtp),
822                                                    std::move(colorSpace),
823                                                    surfaceProps);
824}
825
826bool GrContext::abandoned() const {
827    ASSERT_SINGLE_OWNER
828    return fDrawingManager->wasAbandoned();
829}
830
831namespace {
832void test_pm_conversions(GrContext* ctx, int* pmToUPMValue, int* upmToPMValue) {
833    GrConfigConversionEffect::PMConversion pmToUPM;
834    GrConfigConversionEffect::PMConversion upmToPM;
835    GrConfigConversionEffect::TestForPreservingPMConversions(ctx, &pmToUPM, &upmToPM);
836    *pmToUPMValue = pmToUPM;
837    *upmToPMValue = upmToPM;
838}
839}
840
841void GrContext::testPMConversionsIfNecessary(uint32_t flags) {
842    ASSERT_SINGLE_OWNER
843    if (SkToBool(GrContextPriv::kUnpremul_PixelOpsFlag & flags)) {
844        if (!fDidTestPMConversions) {
845            test_pm_conversions(this, &fPMToUPMConversion, &fUPMToPMConversion);
846            fDidTestPMConversions = true;
847        }
848    }
849}
850
851sk_sp<GrFragmentProcessor> GrContext::createPMToUPMEffect(sk_sp<GrFragmentProcessor> fp,
852                                                          GrPixelConfig config) {
853    ASSERT_SINGLE_OWNER
854    // We should have already called this->testPMConversionsIfNecessary().
855    SkASSERT(fDidTestPMConversions);
856    if (kRGBA_half_GrPixelConfig == config) {
857        return GrFragmentProcessor::UnpremulOutput(std::move(fp));
858    } else if (kRGBA_8888_GrPixelConfig == config || kBGRA_8888_GrPixelConfig == config) {
859        GrConfigConversionEffect::PMConversion pmToUPM =
860            static_cast<GrConfigConversionEffect::PMConversion>(fPMToUPMConversion);
861        if (GrConfigConversionEffect::kPMConversionCnt != pmToUPM) {
862            return GrConfigConversionEffect::Make(std::move(fp), pmToUPM);
863        }
864    }
865    return nullptr;
866}
867
868sk_sp<GrFragmentProcessor> GrContext::createUPMToPMEffect(sk_sp<GrFragmentProcessor> fp,
869                                                          GrPixelConfig config) {
870    ASSERT_SINGLE_OWNER
871    // We should have already called this->testPMConversionsIfNecessary().
872    SkASSERT(fDidTestPMConversions);
873    if (kRGBA_half_GrPixelConfig == config) {
874        return GrFragmentProcessor::PremulOutput(std::move(fp));
875    } else if (kRGBA_8888_GrPixelConfig == config || kBGRA_8888_GrPixelConfig == config) {
876        GrConfigConversionEffect::PMConversion upmToPM =
877            static_cast<GrConfigConversionEffect::PMConversion>(fUPMToPMConversion);
878        if (GrConfigConversionEffect::kPMConversionCnt != upmToPM) {
879            return GrConfigConversionEffect::Make(std::move(fp), upmToPM);
880        }
881    }
882    return nullptr;
883}
884
885bool GrContext::validPMUPMConversionExists(GrPixelConfig config) const {
886    ASSERT_SINGLE_OWNER
887    // We should have already called this->testPMConversionsIfNecessary().
888    SkASSERT(fDidTestPMConversions);
889    // The PM<->UPM tests fail or succeed together so we only need to check one.
890    // For F16, we always allow PM/UPM conversion on the GPU, even if it doesn't round-trip.
891    return GrConfigConversionEffect::kPMConversionCnt != fPMToUPMConversion ||
892           kRGBA_half_GrPixelConfig == config;
893}
894
895//////////////////////////////////////////////////////////////////////////////
896
897void GrContext::getResourceCacheLimits(int* maxTextures, size_t* maxTextureBytes) const {
898    ASSERT_SINGLE_OWNER
899    if (maxTextures) {
900        *maxTextures = fResourceCache->getMaxResourceCount();
901    }
902    if (maxTextureBytes) {
903        *maxTextureBytes = fResourceCache->getMaxResourceBytes();
904    }
905}
906
907void GrContext::setResourceCacheLimits(int maxTextures, size_t maxTextureBytes) {
908    ASSERT_SINGLE_OWNER
909    fResourceCache->setLimits(maxTextures, maxTextureBytes);
910}
911
912//////////////////////////////////////////////////////////////////////////////
913
914void GrContext::dumpMemoryStatistics(SkTraceMemoryDump* traceMemoryDump) const {
915    ASSERT_SINGLE_OWNER
916    fResourceCache->dumpMemoryStatistics(traceMemoryDump);
917}
918