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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 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 "GrBatchFontCache.h" | 8 #include "GrBatchFontCache.h" |
9 #include "GrContext.h" | 9 #include "GrContext.h" |
10 #include "GrFontAtlasSizes.h" | 10 #include "GrFontAtlasSizes.h" |
11 #include "GrGpu.h" | 11 #include "GrGpu.h" |
12 #include "GrRectanizer.h" | 12 #include "GrRectanizer.h" |
13 #include "GrResourceProvider.h" | 13 #include "GrResourceProvider.h" |
14 #include "GrSurfacePriv.h" | 14 #include "GrSurfacePriv.h" |
15 #include "SkString.h" | 15 #include "SkString.h" |
16 | 16 |
17 #include "SkDistanceFieldGen.h" | 17 #include "SkDistanceFieldGen.h" |
18 | 18 |
19 /////////////////////////////////////////////////////////////////////////////// | 19 /////////////////////////////////////////////////////////////////////////////// |
20 | 20 |
21 static GrBatchAtlas* make_atlas(GrContext* context, GrPixelConfig config, | |
22 int textureWidth, int textureHeight, | |
23 int numPlotsX, int numPlotsY) { | |
24 GrSurfaceDesc desc; | |
25 desc.fFlags = kNone_GrSurfaceFlags; | |
26 desc.fWidth = textureWidth; | |
27 desc.fHeight = textureHeight; | |
28 desc.fConfig = config; | |
29 | |
30 // We don't want to flush the context so we claim we're in the middle of flu
shing so as to | |
31 // guarantee we do not recieve a texture with pending IO | |
32 // TODO: Determine how to avoid having to do this. (http://skbug.com/4156) | |
33 static const uint32_t kFlags = GrResourceProvider::kNoPendingIO_Flag; | |
34 GrTexture* texture = context->resourceProvider()->createApproxTexture(desc,
kFlags); | |
35 if (!texture) { | |
36 return NULL; | |
37 } | |
38 return SkNEW_ARGS(GrBatchAtlas, (texture, numPlotsX, numPlotsY)); | |
39 } | |
40 | |
41 bool GrBatchFontCache::initAtlas(GrMaskFormat format) { | 21 bool GrBatchFontCache::initAtlas(GrMaskFormat format) { |
42 int index = MaskFormatToAtlasIndex(format); | 22 int index = MaskFormatToAtlasIndex(format); |
43 if (!fAtlases[index]) { | 23 if (!fAtlases[index]) { |
44 GrPixelConfig config = MaskFormatToPixelConfig(format); | 24 GrPixelConfig config = MaskFormatToPixelConfig(format); |
| 25 int width = GR_FONT_ATLAS_TEXTURE_WIDTH; |
| 26 int height = GR_FONT_ATLAS_TEXTURE_HEIGHT; |
| 27 int numPlotsX = GR_FONT_ATLAS_NUM_PLOTS_X; |
| 28 int numPlotsY = GR_FONT_ATLAS_NUM_PLOTS_Y; |
| 29 |
45 if (kA8_GrMaskFormat == format) { | 30 if (kA8_GrMaskFormat == format) { |
46 fAtlases[index] = make_atlas(fContext, config, | 31 width = GR_FONT_ATLAS_A8_TEXTURE_WIDTH; |
47 GR_FONT_ATLAS_A8_TEXTURE_WIDTH, | 32 numPlotsX = GR_FONT_ATLAS_A8_NUM_PLOTS_X; |
48 GR_FONT_ATLAS_TEXTURE_HEIGHT, | |
49 GR_FONT_ATLAS_A8_NUM_PLOTS_X, | |
50 GR_FONT_ATLAS_NUM_PLOTS_Y); | |
51 } else { | |
52 fAtlases[index] = make_atlas(fContext, config, | |
53 GR_FONT_ATLAS_TEXTURE_WIDTH, | |
54 GR_FONT_ATLAS_TEXTURE_HEIGHT, | |
55 GR_FONT_ATLAS_NUM_PLOTS_X, | |
56 GR_FONT_ATLAS_NUM_PLOTS_Y); | |
57 } | 33 } |
58 | 34 fAtlases[index] = |
59 // Atlas creation can fail | 35 fContext->resourceProvider()->createAtlas(config, width, height, |
60 if (fAtlases[index]) { | 36 numPlotsX, numPlotsY, |
61 fAtlases[index]->registerEvictionCallback(&GrBatchFontCache::HandleE
viction, | 37 &GrBatchFontCache::Han
dleEviction, |
62 (void*)this); | 38 (void*)this); |
63 } else { | 39 if (!fAtlases[index]) { |
64 return false; | 40 return false; |
65 } | 41 } |
66 } | 42 } |
67 return true; | 43 return true; |
68 } | 44 } |
69 | 45 |
70 GrBatchFontCache::GrBatchFontCache(GrContext* context) | 46 GrBatchFontCache::GrBatchFontCache(GrContext* context) |
71 : fContext(context) | 47 : fContext(context) |
72 , fPreserveStrike(NULL) { | 48 , fPreserveStrike(NULL) { |
73 for (int i = 0; i < kMaskFormatCount; ++i) { | 49 for (int i = 0; i < kMaskFormatCount; ++i) { |
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226 | 202 |
227 bool success = fBatchFontCache->addToAtlas(this, &glyph->fID, batchTarget, e
xpectedMaskFormat, | 203 bool success = fBatchFontCache->addToAtlas(this, &glyph->fID, batchTarget, e
xpectedMaskFormat, |
228 glyph->width(), glyph->height(), | 204 glyph->width(), glyph->height(), |
229 storage.get(), &glyph->fAtlasLoca
tion); | 205 storage.get(), &glyph->fAtlasLoca
tion); |
230 if (success) { | 206 if (success) { |
231 SkASSERT(GrBatchAtlas::kInvalidAtlasID != glyph->fID); | 207 SkASSERT(GrBatchAtlas::kInvalidAtlasID != glyph->fID); |
232 fAtlasedGlyphs++; | 208 fAtlasedGlyphs++; |
233 } | 209 } |
234 return success; | 210 return success; |
235 } | 211 } |
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