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1 /* | 1 /* |
2 * Copyright 2010 Google Inc. | 2 * Copyright 2010 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 "SkGr.h" | 8 #include "SkGr.h" |
9 #include "SkColorFilter.h" | 9 #include "SkColorFilter.h" |
10 #include "SkConfig8888.h" | 10 #include "SkConfig8888.h" |
| 11 #include "SkData.h" |
11 #include "SkMessageBus.h" | 12 #include "SkMessageBus.h" |
12 #include "SkPixelRef.h" | 13 #include "SkPixelRef.h" |
13 #include "GrResourceCache.h" | 14 #include "GrResourceCache.h" |
| 15 #include "GrGpu.h" |
| 16 #include "GrDrawTargetCaps.h" |
| 17 |
| 18 #include "etc1.h" |
14 | 19 |
15 /* Fill out buffer with the compressed format Ganesh expects from a colortable | 20 /* Fill out buffer with the compressed format Ganesh expects from a colortable |
16 based bitmap. [palette (colortable) + indices]. | 21 based bitmap. [palette (colortable) + indices]. |
17 | 22 |
18 At the moment Ganesh only supports 8bit version. If Ganesh allowed we others | 23 At the moment Ganesh only supports 8bit version. If Ganesh allowed we others |
19 we could detect that the colortable.count is <= 16, and then repack the | 24 we could detect that the colortable.count is <= 16, and then repack the |
20 indices as nibbles to save RAM, but it would take more time (i.e. a lot | 25 indices as nibbles to save RAM, but it would take more time (i.e. a lot |
21 slower than memcpy), so skipping that for now. | 26 slower than memcpy), so skipping that for now. |
22 | 27 |
23 Ganesh wants a full 256 palette entry, even though Skia's ctable is only as big | 28 Ganesh wants a full 256 palette entry, even though Skia's ctable is only as big |
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117 } | 122 } |
118 }; | 123 }; |
119 | 124 |
120 } // namespace | 125 } // namespace |
121 | 126 |
122 static void add_genID_listener(GrResourceKey key, SkPixelRef* pixelRef) { | 127 static void add_genID_listener(GrResourceKey key, SkPixelRef* pixelRef) { |
123 SkASSERT(NULL != pixelRef); | 128 SkASSERT(NULL != pixelRef); |
124 pixelRef->addGenIDChangeListener(SkNEW_ARGS(GrResourceInvalidator, (key))); | 129 pixelRef->addGenIDChangeListener(SkNEW_ARGS(GrResourceInvalidator, (key))); |
125 } | 130 } |
126 | 131 |
| 132 static GrTexture *load_etc1_texture(GrContext* ctx, |
| 133 const GrTextureParams* params, |
| 134 const SkBitmap &bm, GrTextureDesc desc) { |
| 135 SkData *data = bm.pixelRef()->refEncodedData(); |
| 136 |
| 137 // Is this even encoded data? |
| 138 if (NULL == data) { |
| 139 return NULL; |
| 140 } |
| 141 |
| 142 // Is this a valid PKM encoded data? |
| 143 const uint8_t *bytes = data->bytes(); |
| 144 if (!etc1_pkm_is_valid(bytes)) { |
| 145 return NULL; |
| 146 } |
| 147 |
| 148 uint32_t encodedWidth = etc1_pkm_get_width(bytes); |
| 149 uint32_t encodedHeight = etc1_pkm_get_height(bytes); |
| 150 |
| 151 // Does the data match the dimensions of the bitmap? If not, |
| 152 // then we don't know how to scale the image to match it... |
| 153 if (encodedWidth != static_cast<uint32_t>(bm.width()) || |
| 154 encodedHeight != static_cast<uint32_t>(bm.height())) { |
| 155 return NULL; |
| 156 } |
| 157 |
| 158 // Everything seems good... skip ahead to the data. |
| 159 bytes += ETC_PKM_HEADER_SIZE; |
| 160 desc.fConfig = kETC1_GrPixelConfig; |
| 161 |
| 162 // This texture is likely to be used again so leave it in the cache |
| 163 GrCacheID cacheID; |
| 164 generate_bitmap_cache_id(bm, &cacheID); |
| 165 |
| 166 GrResourceKey key; |
| 167 GrTexture* result = ctx->createTexture(params, desc, cacheID, bytes, 0, &key
); |
| 168 if (NULL != result) { |
| 169 add_genID_listener(key, bm.pixelRef()); |
| 170 } |
| 171 return result; |
| 172 } |
| 173 |
127 static GrTexture* sk_gr_create_bitmap_texture(GrContext* ctx, | 174 static GrTexture* sk_gr_create_bitmap_texture(GrContext* ctx, |
128 bool cache, | 175 bool cache, |
129 const GrTextureParams* params, | 176 const GrTextureParams* params, |
130 const SkBitmap& origBitmap) { | 177 const SkBitmap& origBitmap) { |
131 SkBitmap tmpBitmap; | 178 SkBitmap tmpBitmap; |
132 | 179 |
133 const SkBitmap* bitmap = &origBitmap; | 180 const SkBitmap* bitmap = &origBitmap; |
134 | 181 |
135 GrTextureDesc desc; | 182 GrTextureDesc desc; |
136 generate_bitmap_texture_desc(*bitmap, &desc); | 183 generate_bitmap_texture_desc(*bitmap, &desc); |
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165 bitmap->height(), desc.fConfig, | 212 bitmap->height(), desc.fConfig, |
166 storage.get()); | 213 storage.get()); |
167 return result; | 214 return result; |
168 } | 215 } |
169 } else { | 216 } else { |
170 origBitmap.copyTo(&tmpBitmap, kN32_SkColorType); | 217 origBitmap.copyTo(&tmpBitmap, kN32_SkColorType); |
171 // now bitmap points to our temp, which has been promoted to 32bits | 218 // now bitmap points to our temp, which has been promoted to 32bits |
172 bitmap = &tmpBitmap; | 219 bitmap = &tmpBitmap; |
173 desc.fConfig = SkImageInfo2GrPixelConfig(bitmap->info()); | 220 desc.fConfig = SkImageInfo2GrPixelConfig(bitmap->info()); |
174 } | 221 } |
| 222 |
| 223 // Is this an ETC1 encoded texture? |
| 224 } else if (cache && ctx->getGpu()->caps()->isConfigTexturable(kETC1_GrPixelC
onfig)) { |
| 225 GrTexture *texture = load_etc1_texture(ctx, params, *bitmap, desc); |
| 226 if (NULL != texture) { |
| 227 return texture; |
| 228 } |
175 } | 229 } |
176 | 230 |
177 SkAutoLockPixels alp(*bitmap); | 231 SkAutoLockPixels alp(*bitmap); |
178 if (!bitmap->readyToDraw()) { | 232 if (!bitmap->readyToDraw()) { |
179 return NULL; | 233 return NULL; |
180 } | 234 } |
181 if (cache) { | 235 if (cache) { |
182 // This texture is likely to be used again so leave it in the cache | 236 // This texture is likely to be used again so leave it in the cache |
183 GrCacheID cacheID; | 237 GrCacheID cacheID; |
184 generate_bitmap_cache_id(origBitmap, &cacheID); | 238 generate_bitmap_cache_id(origBitmap, &cacheID); |
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432 copy.setShader(NULL); | 486 copy.setShader(NULL); |
433 // modulate the paint alpha by the shader's solid color alpha | 487 // modulate the paint alpha by the shader's solid color alpha |
434 U8CPU newA = SkMulDiv255Round(SkColorGetA(color), copy.getAlpha()); | 488 U8CPU newA = SkMulDiv255Round(SkColorGetA(color), copy.getAlpha()); |
435 copy.setColor(SkColorSetA(color, newA)); | 489 copy.setColor(SkColorSetA(color, newA)); |
436 SkPaint2GrPaintNoShader(context, copy, false, constantColor, grPaint
); | 490 SkPaint2GrPaintNoShader(context, copy, false, constantColor, grPaint
); |
437 } else { | 491 } else { |
438 SkPaint2GrPaintNoShader(context, skPaint, false, constantColor, grPa
int); | 492 SkPaint2GrPaintNoShader(context, skPaint, false, constantColor, grPa
int); |
439 } | 493 } |
440 } | 494 } |
441 } | 495 } |
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