Robert Phillips | c4039ea | 2018-03-01 11:36:45 -0500 | [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 "GrAtlasManager.h" |
| 9 | |
| 10 | #include "GrCaps.h" |
| 11 | #include "GrGlyph.h" |
| 12 | #include "GrGlyphCache.h" |
| 13 | #include "GrProxyProvider.h" |
| 14 | |
| 15 | GrRestrictedAtlasManager::GrRestrictedAtlasManager( |
| 16 | sk_sp<const GrCaps> caps, |
| 17 | float maxTextureBytes, |
| 18 | GrDrawOpAtlas::AllowMultitexturing allowMultitexturing) |
| 19 | : fCaps(std::move(caps)) |
| 20 | , fAllowMultitexturing(allowMultitexturing) { |
| 21 | // Calculate RGBA size. Must be between 512 x 256 and MaxTextureSize x MaxTextureSize / 2 |
| 22 | int log2MaxTextureSize = SkPrevLog2(fCaps->maxTextureSize()); |
| 23 | int log2MaxDim = 9; |
| 24 | for (; log2MaxDim <= log2MaxTextureSize; ++log2MaxDim) { |
| 25 | int maxDim = 1 << log2MaxDim; |
| 26 | int minDim = 1 << (log2MaxDim - 1); |
| 27 | |
| 28 | if (maxDim * minDim * 4 >= maxTextureBytes) break; |
| 29 | } |
| 30 | |
| 31 | int log2MinDim = log2MaxDim - 1; |
| 32 | int maxDim = 1 << log2MaxDim; |
| 33 | int minDim = 1 << log2MinDim; |
| 34 | // Plots are either 256 or 512. |
| 35 | int maxPlot = SkTMin(512, SkTMax(256, 1 << (log2MaxDim - 2))); |
| 36 | int minPlot = SkTMin(512, SkTMax(256, 1 << (log2MaxDim - 3))); |
| 37 | |
| 38 | // Setup default atlas configs. The A8 atlas uses maxDim for both width and height, as the A8 |
| 39 | // format is already very compact. |
| 40 | fAtlasConfigs[kA8_GrMaskFormat].fWidth = maxDim; |
| 41 | fAtlasConfigs[kA8_GrMaskFormat].fHeight = maxDim; |
| 42 | fAtlasConfigs[kA8_GrMaskFormat].fPlotWidth = maxPlot; |
| 43 | fAtlasConfigs[kA8_GrMaskFormat].fPlotHeight = minPlot; |
| 44 | |
| 45 | // A565 and ARGB use maxDim x minDim. |
| 46 | fAtlasConfigs[kA565_GrMaskFormat].fWidth = minDim; |
| 47 | fAtlasConfigs[kA565_GrMaskFormat].fHeight = maxDim; |
| 48 | fAtlasConfigs[kA565_GrMaskFormat].fPlotWidth = minPlot; |
| 49 | fAtlasConfigs[kA565_GrMaskFormat].fPlotHeight = minPlot; |
| 50 | |
| 51 | fAtlasConfigs[kARGB_GrMaskFormat].fWidth = minDim; |
| 52 | fAtlasConfigs[kARGB_GrMaskFormat].fHeight = maxDim; |
| 53 | fAtlasConfigs[kARGB_GrMaskFormat].fPlotWidth = minPlot; |
| 54 | fAtlasConfigs[kARGB_GrMaskFormat].fPlotHeight = minPlot; |
| 55 | |
| 56 | fGlyphSizeLimit = minPlot; |
| 57 | } |
| 58 | |
| 59 | GrRestrictedAtlasManager::~GrRestrictedAtlasManager() { |
| 60 | } |
| 61 | |
| 62 | static GrPixelConfig mask_format_to_pixel_config(GrMaskFormat format, const GrCaps& caps) { |
| 63 | switch (format) { |
| 64 | case kA8_GrMaskFormat: |
| 65 | return kAlpha_8_GrPixelConfig; |
| 66 | case kA565_GrMaskFormat: |
| 67 | return kRGB_565_GrPixelConfig; |
| 68 | case kARGB_GrMaskFormat: |
| 69 | return caps.srgbSupport() ? kSRGBA_8888_GrPixelConfig : kRGBA_8888_GrPixelConfig; |
| 70 | default: |
| 71 | SkDEBUGFAIL("unsupported GrMaskFormat"); |
| 72 | return kAlpha_8_GrPixelConfig; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | ////////////////////////////////////////////////////////////////////////////////////////////////// |
| 77 | GrAtlasManager::GrAtlasManager(GrProxyProvider* proxyProvider, GrGlyphCache* glyphCache, |
| 78 | float maxTextureBytes, |
| 79 | GrDrawOpAtlas::AllowMultitexturing allowMultitexturing) |
| 80 | : INHERITED(proxyProvider->refCaps(), maxTextureBytes, allowMultitexturing) |
| 81 | , fProxyProvider(proxyProvider) |
| 82 | , fGlyphCache(glyphCache) { |
| 83 | } |
| 84 | |
| 85 | void GrAtlasManager::freeAll() { |
| 86 | for (int i = 0; i < kMaskFormatCount; ++i) { |
| 87 | fAtlases[i] = nullptr; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | bool GrAtlasManager::hasGlyph(GrGlyph* glyph) { |
| 92 | SkASSERT(glyph); |
| 93 | return this->getAtlas(glyph->fMaskFormat)->hasID(glyph->fID); |
| 94 | } |
| 95 | |
| 96 | // add to texture atlas that matches this format |
| 97 | bool GrAtlasManager::addToAtlas(GrResourceProvider* resourceProvider, |
| 98 | GrGlyphCache* glyphCache, |
| 99 | GrAtlasTextStrike* strike, GrDrawOpAtlas::AtlasID* id, |
| 100 | GrDeferredUploadTarget* target, GrMaskFormat format, |
| 101 | int width, int height, const void* image, SkIPoint16* loc) { |
| 102 | glyphCache->setStrikeToPreserve(strike); |
| 103 | return this->getAtlas(format)->addToAtlas(resourceProvider, id, target, width, height, |
| 104 | image, loc); |
| 105 | } |
| 106 | |
| 107 | void GrAtlasManager::addGlyphToBulkAndSetUseToken(GrDrawOpAtlas::BulkUseTokenUpdater* updater, |
| 108 | GrGlyph* glyph, |
| 109 | GrDeferredUploadToken token) { |
| 110 | SkASSERT(glyph); |
| 111 | updater->add(glyph->fID); |
| 112 | this->getAtlas(glyph->fMaskFormat)->setLastUseToken(glyph->fID, token); |
| 113 | } |
| 114 | |
| 115 | #ifdef SK_DEBUG |
| 116 | #include "GrContextPriv.h" |
| 117 | #include "GrSurfaceProxy.h" |
| 118 | #include "GrSurfaceContext.h" |
| 119 | #include "GrTextureProxy.h" |
| 120 | |
| 121 | #include "SkBitmap.h" |
| 122 | #include "SkImageEncoder.h" |
| 123 | #include "SkStream.h" |
| 124 | #include <stdio.h> |
| 125 | |
| 126 | /** |
| 127 | * Write the contents of the surface proxy to a PNG. Returns true if successful. |
| 128 | * @param filename Full path to desired file |
| 129 | */ |
| 130 | static bool save_pixels(GrContext* context, GrSurfaceProxy* sProxy, const char* filename) { |
| 131 | if (!sProxy) { |
| 132 | return false; |
| 133 | } |
| 134 | |
| 135 | SkImageInfo ii = SkImageInfo::Make(sProxy->width(), sProxy->height(), |
| 136 | kRGBA_8888_SkColorType, kPremul_SkAlphaType); |
| 137 | SkBitmap bm; |
| 138 | if (!bm.tryAllocPixels(ii)) { |
| 139 | return false; |
| 140 | } |
| 141 | |
| 142 | sk_sp<GrSurfaceContext> sContext(context->contextPriv().makeWrappedSurfaceContext( |
| 143 | sk_ref_sp(sProxy))); |
| 144 | if (!sContext || !sContext->asTextureProxy()) { |
| 145 | return false; |
| 146 | } |
| 147 | |
| 148 | bool result = sContext->readPixels(ii, bm.getPixels(), bm.rowBytes(), 0, 0); |
| 149 | if (!result) { |
| 150 | SkDebugf("------ failed to read pixels for %s\n", filename); |
| 151 | return false; |
| 152 | } |
| 153 | |
| 154 | // remove any previous version of this file |
| 155 | remove(filename); |
| 156 | |
| 157 | SkFILEWStream file(filename); |
| 158 | if (!file.isValid()) { |
| 159 | SkDebugf("------ failed to create file: %s\n", filename); |
| 160 | remove(filename); // remove any partial file |
| 161 | return false; |
| 162 | } |
| 163 | |
| 164 | if (!SkEncodeImage(&file, bm, SkEncodedImageFormat::kPNG, 100)) { |
| 165 | SkDebugf("------ failed to encode %s\n", filename); |
| 166 | remove(filename); // remove any partial file |
| 167 | return false; |
| 168 | } |
| 169 | |
| 170 | return true; |
| 171 | } |
| 172 | |
| 173 | void GrAtlasManager::dump(GrContext* context) const { |
| 174 | static int gDumpCount = 0; |
| 175 | for (int i = 0; i < kMaskFormatCount; ++i) { |
| 176 | if (fAtlases[i]) { |
| 177 | const sk_sp<GrTextureProxy>* proxies = fAtlases[i]->getProxies(); |
| 178 | for (uint32_t pageIdx = 0; pageIdx < fAtlases[i]->numActivePages(); ++pageIdx) { |
| 179 | SkASSERT(proxies[pageIdx]); |
| 180 | SkString filename; |
| 181 | #ifdef SK_BUILD_FOR_ANDROID |
| 182 | filename.printf("/sdcard/fontcache_%d%d%d.png", gDumpCount, i, pageIdx); |
| 183 | #else |
| 184 | filename.printf("fontcache_%d%d%d.png", gDumpCount, i, pageIdx); |
| 185 | #endif |
| 186 | |
| 187 | save_pixels(context, proxies[pageIdx].get(), filename.c_str()); |
| 188 | } |
| 189 | } |
| 190 | } |
| 191 | ++gDumpCount; |
| 192 | } |
| 193 | #endif |
| 194 | |
| 195 | void GrAtlasManager::setAtlasSizes_ForTesting(const GrDrawOpAtlasConfig configs[3]) { |
| 196 | // Delete any old atlases. |
| 197 | // This should be safe to do as long as we are not in the middle of a flush. |
| 198 | for (int i = 0; i < kMaskFormatCount; i++) { |
| 199 | fAtlases[i] = nullptr; |
| 200 | } |
| 201 | memcpy(fAtlasConfigs, configs, sizeof(fAtlasConfigs)); |
| 202 | } |
| 203 | |
| 204 | bool GrAtlasManager::initAtlas(GrMaskFormat format) { |
| 205 | int index = MaskFormatToAtlasIndex(format); |
| 206 | if (!fAtlases[index]) { |
| 207 | GrPixelConfig config = mask_format_to_pixel_config(format, *fCaps); |
| 208 | int width = fAtlasConfigs[index].fWidth; |
| 209 | int height = fAtlasConfigs[index].fHeight; |
| 210 | int numPlotsX = fAtlasConfigs[index].numPlotsX(); |
| 211 | int numPlotsY = fAtlasConfigs[index].numPlotsY(); |
| 212 | |
| 213 | fAtlases[index] = GrDrawOpAtlas::Make(fProxyProvider, config, width, height, |
| 214 | numPlotsX, numPlotsY, fAllowMultitexturing, |
| 215 | &GrGlyphCache::HandleEviction, |
| 216 | fGlyphCache); |
| 217 | if (!fAtlases[index]) { |
| 218 | return false; |
| 219 | } |
| 220 | } |
| 221 | return true; |
| 222 | } |