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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 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 "SkGpuDevice.h" | 8 #include "SkGpuDevice.h" |
9 | 9 |
10 #include "effects/GrBicubicEffect.h" | 10 #include "effects/GrBicubicEffect.h" |
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1163 // the view matrix rather than a local matrix. | 1163 // the view matrix rather than a local matrix. |
1164 SkMatrix m; | 1164 SkMatrix m; |
1165 m.setScale(dstSize.fWidth / srcRect.width(), | 1165 m.setScale(dstSize.fWidth / srcRect.width(), |
1166 dstSize.fHeight / srcRect.height()); | 1166 dstSize.fHeight / srcRect.height()); |
1167 fContext->concatMatrix(m); | 1167 fContext->concatMatrix(m); |
1168 | 1168 |
1169 GrTextureParams params; | 1169 GrTextureParams params; |
1170 SkPaint::FilterLevel paintFilterLevel = paint.getFilterLevel(); | 1170 SkPaint::FilterLevel paintFilterLevel = paint.getFilterLevel(); |
1171 GrTextureParams::FilterMode textureFilterMode; | 1171 GrTextureParams::FilterMode textureFilterMode; |
1172 | 1172 |
1173 int tileFilterPad; | |
1174 bool doBicubic = false; | 1173 bool doBicubic = false; |
1175 | 1174 |
1176 switch(paintFilterLevel) { | 1175 switch(paintFilterLevel) { |
1177 case SkPaint::kNone_FilterLevel: | 1176 case SkPaint::kNone_FilterLevel: |
1178 tileFilterPad = 0; | |
1179 textureFilterMode = GrTextureParams::kNone_FilterMode; | 1177 textureFilterMode = GrTextureParams::kNone_FilterMode; |
1180 break; | 1178 break; |
1181 case SkPaint::kLow_FilterLevel: | 1179 case SkPaint::kLow_FilterLevel: |
1182 tileFilterPad = 1; | |
1183 textureFilterMode = GrTextureParams::kBilerp_FilterMode; | 1180 textureFilterMode = GrTextureParams::kBilerp_FilterMode; |
1184 break; | 1181 break; |
1185 case SkPaint::kMedium_FilterLevel: | 1182 case SkPaint::kMedium_FilterLevel: |
1186 tileFilterPad = 1; | |
1187 if (fContext->getMatrix().getMinScale() < SK_Scalar1) { | 1183 if (fContext->getMatrix().getMinScale() < SK_Scalar1) { |
1188 textureFilterMode = GrTextureParams::kMipMap_FilterMode; | 1184 textureFilterMode = GrTextureParams::kMipMap_FilterMode; |
1189 } else { | 1185 } else { |
1190 // Don't trigger MIP level generation unnecessarily. | 1186 // Don't trigger MIP level generation unnecessarily. |
1191 textureFilterMode = GrTextureParams::kBilerp_FilterMode; | 1187 textureFilterMode = GrTextureParams::kBilerp_FilterMode; |
1192 } | 1188 } |
1193 break; | 1189 break; |
1194 case SkPaint::kHigh_FilterLevel: | 1190 case SkPaint::kHigh_FilterLevel: |
1195 // Minification can look bad with the bicubic effect. | 1191 // Minification can look bad with the bicubic effect. |
1196 if (fContext->getMatrix().getMinScale() >= SK_Scalar1) { | 1192 doBicubic = |
1197 // We will install an effect that does the filtering in the shad
er. | 1193 GrBicubicEffect::ShouldUseBicubic(fContext->getMatrix(), &textur
eFilterMode); |
1198 textureFilterMode = GrTextureParams::kNone_FilterMode; | |
1199 tileFilterPad = GrBicubicEffect::kFilterTexelPad; | |
1200 doBicubic = true; | |
1201 } else { | |
1202 textureFilterMode = GrTextureParams::kMipMap_FilterMode; | |
1203 tileFilterPad = 1; | |
1204 } | |
1205 break; | 1194 break; |
1206 default: | 1195 default: |
1207 SkErrorInternals::SetError( kInvalidPaint_SkError, | 1196 SkErrorInternals::SetError( kInvalidPaint_SkError, |
1208 "Sorry, I don't understand the filtering
" | 1197 "Sorry, I don't understand the filtering
" |
1209 "mode you asked for. Falling back to " | 1198 "mode you asked for. Falling back to " |
1210 "MIPMaps."); | 1199 "MIPMaps."); |
1211 tileFilterPad = 1; | |
1212 textureFilterMode = GrTextureParams::kMipMap_FilterMode; | 1200 textureFilterMode = GrTextureParams::kMipMap_FilterMode; |
1213 break; | 1201 break; |
1214 } | 1202 } |
1215 | 1203 |
| 1204 int tileFilterPad; |
| 1205 if (doBicubic) { |
| 1206 tileFilterPad = GrBicubicEffect::kFilterTexelPad; |
| 1207 } else if (GrTextureParams::kNone_FilterMode == textureFilterMode) { |
| 1208 tileFilterPad = 0; |
| 1209 } else { |
| 1210 tileFilterPad = 1; |
| 1211 } |
1216 params.setFilterMode(textureFilterMode); | 1212 params.setFilterMode(textureFilterMode); |
1217 | 1213 |
1218 int maxTileSize = fContext->getMaxTextureSize() - 2 * tileFilterPad; | 1214 int maxTileSize = fContext->getMaxTextureSize() - 2 * tileFilterPad; |
1219 int tileSize; | 1215 int tileSize; |
1220 | 1216 |
1221 SkIRect clippedSrcRect; | 1217 SkIRect clippedSrcRect; |
1222 if (this->shouldTileBitmap(bitmap, params, srcRectPtr, maxTileSize, &tileSiz
e, | 1218 if (this->shouldTileBitmap(bitmap, params, srcRectPtr, maxTileSize, &tileSiz
e, |
1223 &clippedSrcRect)) { | 1219 &clippedSrcRect)) { |
1224 this->drawTiledBitmap(bitmap, srcRect, clippedSrcRect, params, paint, fl
ags, tileSize, | 1220 this->drawTiledBitmap(bitmap, srcRect, clippedSrcRect, params, paint, fl
ags, tileSize, |
1225 doBicubic); | 1221 doBicubic); |
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1990 GrCachedLayer* layer = fContext->getLayerCache()->findLayerOrCreate(pict
ure, i); | 1986 GrCachedLayer* layer = fContext->getLayerCache()->findLayerOrCreate(pict
ure, i); |
1991 | 1987 |
1992 if (NULL != layer->getTexture()) { | 1988 if (NULL != layer->getTexture()) { |
1993 fContext->unlockScratchTexture(layer->getTexture()); | 1989 fContext->unlockScratchTexture(layer->getTexture()); |
1994 layer->setTexture(NULL); | 1990 layer->setTexture(NULL); |
1995 } | 1991 } |
1996 } | 1992 } |
1997 | 1993 |
1998 return true; | 1994 return true; |
1999 } | 1995 } |
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