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| 1 | 1 |
| 2 /* | 2 /* |
| 3 * Copyright 2010 Google Inc. | 3 * Copyright 2010 Google Inc. |
| 4 * | 4 * |
| 5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
| 7 */ | 7 */ |
| 8 | 8 |
| 9 #include "GrAtlas.h" | 9 #include "GrAtlas.h" |
| 10 #include "GrContext.h" | 10 #include "GrContext.h" |
| 11 #include "GrGpu.h" | 11 #include "GrGpu.h" |
| 12 #include "GrRectanizer.h" | 12 #include "GrRectanizer.h" |
| 13 #include "GrTracing.h" | 13 #include "GrTracing.h" |
| 14 | 14 |
| 15 /////////////////////////////////////////////////////////////////////////////// | 15 /////////////////////////////////////////////////////////////////////////////// |
| 16 | 16 |
| 17 // for testing | 17 // for testing |
| 18 #define FONT_CACHE_STATS 0 | 18 #define FONT_CACHE_STATS 0 |
| 19 #if FONT_CACHE_STATS | 19 #if FONT_CACHE_STATS |
| 20 static int g_UploadCount = 0; | 20 static int g_UploadCount = 0; |
| 21 #endif | 21 #endif |
| 22 | 22 |
| 23 GrPlot::GrPlot() | 23 GrPlot::GrPlot() |
| 24 : fDrawToken(NULL, 0) | 24 : fID(-1) |
| 25 , fID(-1) | |
| 26 , fTexture(NULL) | 25 , fTexture(NULL) |
| 27 , fRects(NULL) | 26 , fRects(NULL) |
| 28 , fAtlas(NULL) | 27 , fAtlas(NULL) |
| 29 , fBytesPerPixel(1) | 28 , fBytesPerPixel(1) |
| 30 , fDirty(false) | 29 , fDirty(false) |
| 31 , fBatchUploads(false) | 30 , fBatchUploads(false) |
| 32 { | 31 { |
| 33 fOffset.set(0, 0); | 32 fOffset.set(0, 0); |
| 34 } | 33 } |
| 35 | 34 |
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| 99 adjust_for_offset(loc, fOffset); | 98 adjust_for_offset(loc, fOffset); |
| 100 } | 99 } |
| 101 | 100 |
| 102 #if FONT_CACHE_STATS | 101 #if FONT_CACHE_STATS |
| 103 ++g_UploadCount; | 102 ++g_UploadCount; |
| 104 #endif | 103 #endif |
| 105 | 104 |
| 106 return true; | 105 return true; |
| 107 } | 106 } |
| 108 | 107 |
| 109 void GrPlot::uploadToTexture() { | |
| 110 static const float kNearlyFullTolerance = 0.85f; | |
| 111 | |
| 112 // should only do this if batching is enabled | |
| 113 SkASSERT(fBatchUploads); | |
| 114 | |
| 115 if (fDirty) { | |
| 116 TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("skia.gpu"), "GrPlot::uploadToTex
ture"); | |
| 117 SkASSERT(fTexture); | |
| 118 // We pass the flag that does not force a flush. We assume our caller is | |
| 119 // smart and hasn't referenced the part of the texture we're about to up
date | |
| 120 // since the last flush. | |
| 121 size_t rowBytes = fBytesPerPixel*fRects->width(); | |
| 122 const unsigned char* dataPtr = fPlotData; | |
| 123 dataPtr += rowBytes*fDirtyRect.fTop; | |
| 124 dataPtr += fBytesPerPixel*fDirtyRect.fLeft; | |
| 125 fTexture->writePixels(fOffset.fX + fDirtyRect.fLeft, fOffset.fY + fDirty
Rect.fTop, | |
| 126 fDirtyRect.width(), fDirtyRect.height(), fTexture-
>config(), dataPtr, | |
| 127 rowBytes, GrContext::kDontFlush_PixelOpsFlag); | |
| 128 fDirtyRect.setEmpty(); | |
| 129 fDirty = false; | |
| 130 // If the Plot is nearly full, anything else we add will probably be sma
ll and one | |
| 131 // at a time, so free up the memory and after this upload any new images
directly. | |
| 132 if (fRects->percentFull() > kNearlyFullTolerance) { | |
| 133 SkDELETE_ARRAY(fPlotData); | |
| 134 fPlotData = NULL; | |
| 135 } | |
| 136 } | |
| 137 } | |
| 138 | |
| 139 void GrPlot::resetRects() { | 108 void GrPlot::resetRects() { |
| 140 SkASSERT(fRects); | 109 SkASSERT(fRects); |
| 141 fRects->reset(); | 110 fRects->reset(); |
| 142 } | 111 } |
| 143 | 112 |
| 144 /////////////////////////////////////////////////////////////////////////////// | 113 /////////////////////////////////////////////////////////////////////////////// |
| 145 | 114 |
| 146 GrAtlas::GrAtlas(GrGpu* gpu, GrPixelConfig config, GrSurfaceFlags flags, | 115 GrAtlas::GrAtlas(GrGpu* gpu, GrPixelConfig config, GrSurfaceFlags flags, |
| 147 const SkISize& backingTextureSize, | 116 const SkISize& backingTextureSize, |
| 148 int numPlotsX, int numPlotsY, bool batchUploads) { | 117 int numPlotsX, int numPlotsY, bool batchUploads) { |
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| 251 // If the above fails, then the current plot list has no room | 220 // If the above fails, then the current plot list has no room |
| 252 return NULL; | 221 return NULL; |
| 253 } | 222 } |
| 254 | 223 |
| 255 void GrAtlas::RemovePlot(ClientPlotUsage* usage, const GrPlot* plot) { | 224 void GrAtlas::RemovePlot(ClientPlotUsage* usage, const GrPlot* plot) { |
| 256 int index = usage->fPlots.find(const_cast<GrPlot*>(plot)); | 225 int index = usage->fPlots.find(const_cast<GrPlot*>(plot)); |
| 257 if (index >= 0) { | 226 if (index >= 0) { |
| 258 usage->fPlots.remove(index); | 227 usage->fPlots.remove(index); |
| 259 } | 228 } |
| 260 } | 229 } |
| 261 | |
| 262 // get a plot that's not being used by the current draw | |
| 263 GrPlot* GrAtlas::getUnusedPlot() { | |
| 264 GrPlotList::Iter plotIter; | |
| 265 plotIter.init(fPlotList, GrPlotList::Iter::kTail_IterStart); | |
| 266 GrPlot* plot; | |
| 267 while ((plot = plotIter.get())) { | |
| 268 if (plot->drawToken().isIssued()) { | |
| 269 return plot; | |
| 270 } | |
| 271 plotIter.prev(); | |
| 272 } | |
| 273 | |
| 274 return NULL; | |
| 275 } | |
| 276 | |
| 277 void GrAtlas::uploadPlotsToTexture() { | |
| 278 if (fBatchUploads) { | |
| 279 GrPlotList::Iter plotIter; | |
| 280 plotIter.init(fPlotList, GrPlotList::Iter::kHead_IterStart); | |
| 281 GrPlot* plot; | |
| 282 while ((plot = plotIter.get())) { | |
| 283 plot->uploadToTexture(); | |
| 284 plotIter.next(); | |
| 285 } | |
| 286 } | |
| 287 } | |
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