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1 /* | 1 /* |
2 * Copyright 2006 The Android Open Source Project | 2 * Copyright 2006 The Android Open Source Project |
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 "SkGradientShaderPriv.h" | 8 #include "SkGradientShaderPriv.h" |
9 #include "SkLinearGradient.h" | 9 #include "SkLinearGradient.h" |
10 #include "SkRadialGradient.h" | 10 #include "SkRadialGradient.h" |
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1143 SkBitmap bitmap; | 1143 SkBitmap bitmap; |
1144 shader.getGradientTableBitmap(&bitmap); | 1144 shader.getGradientTableBitmap(&bitmap); |
1145 | 1145 |
1146 GrTextureStripAtlas::Desc desc; | 1146 GrTextureStripAtlas::Desc desc; |
1147 desc.fWidth = bitmap.width(); | 1147 desc.fWidth = bitmap.width(); |
1148 desc.fHeight = 32; | 1148 desc.fHeight = 32; |
1149 desc.fRowHeight = bitmap.height(); | 1149 desc.fRowHeight = bitmap.height(); |
1150 desc.fContext = ctx; | 1150 desc.fContext = ctx; |
1151 desc.fConfig = SkImageInfo2GrPixelConfig(bitmap.info()); | 1151 desc.fConfig = SkImageInfo2GrPixelConfig(bitmap.info()); |
1152 fAtlas = GrTextureStripAtlas::GetAtlas(desc); | 1152 fAtlas = GrTextureStripAtlas::GetAtlas(desc); |
1153 SkASSERT(NULL != fAtlas); | 1153 SkASSERT(fAtlas); |
1154 | 1154 |
1155 // We always filter the gradient table. Each table is one row of a textu
re, always y-clamp. | 1155 // We always filter the gradient table. Each table is one row of a textu
re, always y-clamp. |
1156 GrTextureParams params; | 1156 GrTextureParams params; |
1157 params.setFilterMode(GrTextureParams::kBilerp_FilterMode); | 1157 params.setFilterMode(GrTextureParams::kBilerp_FilterMode); |
1158 params.setTileModeX(tileMode); | 1158 params.setTileModeX(tileMode); |
1159 | 1159 |
1160 fRow = fAtlas->lockRow(bitmap); | 1160 fRow = fAtlas->lockRow(bitmap); |
1161 if (-1 != fRow) { | 1161 if (-1 != fRow) { |
1162 fYCoord = fAtlas->getYOffset(fRow) + SK_ScalarHalf * | 1162 fYCoord = fAtlas->getYOffset(fRow) + SK_ScalarHalf * |
1163 fAtlas->getVerticalScaleFactor(); | 1163 fAtlas->getVerticalScaleFactor(); |
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1232 int outColors = random->nextRangeU(1, kMaxRandomGradientColors); | 1232 int outColors = random->nextRangeU(1, kMaxRandomGradientColors); |
1233 | 1233 |
1234 // if one color, omit stops, otherwise randomly decide whether or not to | 1234 // if one color, omit stops, otherwise randomly decide whether or not to |
1235 if (outColors == 1 || (outColors >= 2 && random->nextBool())) { | 1235 if (outColors == 1 || (outColors >= 2 && random->nextBool())) { |
1236 *stops = NULL; | 1236 *stops = NULL; |
1237 } | 1237 } |
1238 | 1238 |
1239 SkScalar stop = 0.f; | 1239 SkScalar stop = 0.f; |
1240 for (int i = 0; i < outColors; ++i) { | 1240 for (int i = 0; i < outColors; ++i) { |
1241 colors[i] = random->nextU(); | 1241 colors[i] = random->nextU(); |
1242 if (NULL != *stops) { | 1242 if (*stops) { |
1243 (*stops)[i] = stop; | 1243 (*stops)[i] = stop; |
1244 stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - st
op) : 1.f; | 1244 stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - st
op) : 1.f; |
1245 } | 1245 } |
1246 } | 1246 } |
1247 *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileM
odeCount)); | 1247 *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileM
odeCount)); |
1248 | 1248 |
1249 return outColors; | 1249 return outColors; |
1250 } | 1250 } |
1251 | 1251 |
1252 #endif | 1252 #endif |
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