epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 2 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 3 | * Copyright 2010 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 10 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 11 | #include "SkGr.h" |
| 12 | |
| 13 | /* Fill out buffer with the compressed format Ganesh expects from a colortable |
| 14 | based bitmap. [palette (colortable) + indices]. |
bsalomon@google.com | 5782d71 | 2011-01-21 21:03:59 +0000 | [diff] [blame] | 15 | |
| 16 | At the moment Ganesh only supports 8bit version. If Ganesh allowed we others |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 17 | we could detect that the colortable.count is <= 16, and then repack the |
| 18 | indices as nibbles to save RAM, but it would take more time (i.e. a lot |
| 19 | slower than memcpy), so skipping that for now. |
bsalomon@google.com | 5782d71 | 2011-01-21 21:03:59 +0000 | [diff] [blame] | 20 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 21 | Ganesh wants a full 256 palette entry, even though Skia's ctable is only as big |
| 22 | as the colortable.count says it is. |
| 23 | */ |
| 24 | static void build_compressed_data(void* buffer, const SkBitmap& bitmap) { |
| 25 | SkASSERT(SkBitmap::kIndex8_Config == bitmap.config()); |
bsalomon@google.com | 5782d71 | 2011-01-21 21:03:59 +0000 | [diff] [blame] | 26 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 27 | SkAutoLockPixels apl(bitmap); |
| 28 | if (!bitmap.readyToDraw()) { |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 29 | SkDEBUGFAIL("bitmap not ready to draw!"); |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 30 | return; |
| 31 | } |
| 32 | |
| 33 | SkColorTable* ctable = bitmap.getColorTable(); |
| 34 | char* dst = (char*)buffer; |
bsalomon@google.com | 5782d71 | 2011-01-21 21:03:59 +0000 | [diff] [blame] | 35 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 36 | memcpy(dst, ctable->lockColors(), ctable->count() * sizeof(SkPMColor)); |
| 37 | ctable->unlockColors(false); |
bsalomon@google.com | 5782d71 | 2011-01-21 21:03:59 +0000 | [diff] [blame] | 38 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 39 | // always skip a full 256 number of entries, even if we memcpy'd fewer |
bsalomon@google.com | fea37b5 | 2011-04-25 15:51:06 +0000 | [diff] [blame] | 40 | dst += kGrColorTableSize; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 41 | |
| 42 | if (bitmap.width() == bitmap.rowBytes()) { |
| 43 | memcpy(dst, bitmap.getPixels(), bitmap.getSize()); |
| 44 | } else { |
| 45 | // need to trim off the extra bytes per row |
| 46 | size_t width = bitmap.width(); |
| 47 | size_t rowBytes = bitmap.rowBytes(); |
| 48 | const char* src = (const char*)bitmap.getPixels(); |
| 49 | for (int y = 0; y < bitmap.height(); y++) { |
| 50 | memcpy(dst, src, width); |
| 51 | src += rowBytes; |
| 52 | dst += width; |
| 53 | } |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | //////////////////////////////////////////////////////////////////////////////// |
| 58 | |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 59 | static void generate_bitmap_cache_id(const SkBitmap& bitmap, GrCacheID* id) { |
| 60 | // Our id includes the offset, width, and height so that bitmaps created by extractSubset() |
| 61 | // are unique. |
| 62 | uint32_t genID = bitmap.getGenerationID(); |
| 63 | size_t offset = bitmap.pixelRefOffset(); |
| 64 | int16_t width = static_cast<int16_t>(bitmap.width()); |
| 65 | int16_t height = static_cast<int16_t>(bitmap.height()); |
| 66 | |
| 67 | GrCacheID::Key key; |
| 68 | memcpy(key.fData8, &genID, 4); |
| 69 | memcpy(key.fData8 + 4, &width, 2); |
| 70 | memcpy(key.fData8 + 6, &height, 2); |
| 71 | memcpy(key.fData8 + 8, &offset, sizeof(size_t)); |
| 72 | GR_STATIC_ASSERT(sizeof(key) >= 8 + sizeof(size_t)); |
| 73 | static const GrCacheID::Domain gBitmapTextureDomain = GrCacheID::GenerateDomain(); |
| 74 | id->reset(gBitmapTextureDomain, key); |
| 75 | } |
| 76 | |
| 77 | static void generate_bitmap_texture_desc(const SkBitmap& bitmap, GrTextureDesc* desc) { |
| 78 | desc->fFlags = kNone_GrTextureFlags; |
| 79 | desc->fWidth = bitmap.width(); |
| 80 | desc->fHeight = bitmap.height(); |
| 81 | desc->fConfig = SkBitmapConfig2GrPixelConfig(bitmap.config()); |
| 82 | desc->fSampleCnt = 0; |
| 83 | } |
| 84 | |
robertphillips@google.com | 1f47f4f | 2012-08-16 14:49:16 +0000 | [diff] [blame] | 85 | static GrTexture* sk_gr_create_bitmap_texture(GrContext* ctx, |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 86 | bool cache, |
robertphillips@google.com | 1f47f4f | 2012-08-16 14:49:16 +0000 | [diff] [blame] | 87 | const GrTextureParams* params, |
| 88 | const SkBitmap& origBitmap) { |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 89 | SkAutoLockPixels alp(origBitmap); |
bsalomon@google.com | 50398bf | 2011-07-26 20:45:30 +0000 | [diff] [blame] | 90 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 91 | if (!origBitmap.readyToDraw()) { |
robertphillips@google.com | 1f47f4f | 2012-08-16 14:49:16 +0000 | [diff] [blame] | 92 | return NULL; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 93 | } |
| 94 | |
| 95 | SkBitmap tmpBitmap; |
| 96 | |
| 97 | const SkBitmap* bitmap = &origBitmap; |
bsalomon@google.com | 5782d71 | 2011-01-21 21:03:59 +0000 | [diff] [blame] | 98 | |
robertphillips@google.com | 75b3c96 | 2012-06-07 12:08:45 +0000 | [diff] [blame] | 99 | GrTextureDesc desc; |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 100 | generate_bitmap_texture_desc(*bitmap, &desc); |
bsalomon@google.com | 5782d71 | 2011-01-21 21:03:59 +0000 | [diff] [blame] | 101 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 102 | if (SkBitmap::kIndex8_Config == bitmap->config()) { |
| 103 | // build_compressed_data doesn't do npot->pot expansion |
| 104 | // and paletted textures can't be sub-updated |
bsalomon@google.com | b867099 | 2012-07-25 21:27:09 +0000 | [diff] [blame] | 105 | if (ctx->supportsIndex8PixelConfig(params, |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 106 | bitmap->width(), bitmap->height())) { |
bsalomon@google.com | 5782d71 | 2011-01-21 21:03:59 +0000 | [diff] [blame] | 107 | size_t imagesize = bitmap->width() * bitmap->height() + |
bsalomon@google.com | fea37b5 | 2011-04-25 15:51:06 +0000 | [diff] [blame] | 108 | kGrColorTableSize; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 109 | SkAutoMalloc storage(imagesize); |
bsalomon@google.com | 5782d71 | 2011-01-21 21:03:59 +0000 | [diff] [blame] | 110 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 111 | build_compressed_data(storage.get(), origBitmap); |
| 112 | |
| 113 | // our compressed data will be trimmed, so pass width() for its |
| 114 | // "rowBytes", since they are the same now. |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 115 | |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 116 | if (cache) { |
| 117 | GrCacheID cacheID; |
| 118 | generate_bitmap_cache_id(origBitmap, &cacheID); |
| 119 | return ctx->createTexture(params, desc, cacheID, |
robertphillips@google.com | 9fbcad0 | 2012-09-09 14:44:15 +0000 | [diff] [blame] | 120 | storage.get(), |
| 121 | bitmap->width()); |
junov@google.com | 4ee7ae5 | 2011-06-30 17:30:49 +0000 | [diff] [blame] | 122 | } else { |
robertphillips@google.com | 1f47f4f | 2012-08-16 14:49:16 +0000 | [diff] [blame] | 123 | GrTexture* result = ctx->lockScratchTexture(desc, |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 124 | GrContext::kExact_ScratchTexMatch); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 125 | result->writePixels(0, 0, bitmap->width(), |
robertphillips@google.com | 1f47f4f | 2012-08-16 14:49:16 +0000 | [diff] [blame] | 126 | bitmap->height(), desc.fConfig, |
bsalomon@google.com | 0342a85 | 2012-08-20 19:22:38 +0000 | [diff] [blame] | 127 | storage.get()); |
robertphillips@google.com | 1f47f4f | 2012-08-16 14:49:16 +0000 | [diff] [blame] | 128 | return result; |
junov@google.com | 4ee7ae5 | 2011-06-30 17:30:49 +0000 | [diff] [blame] | 129 | } |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 130 | } else { |
| 131 | origBitmap.copyTo(&tmpBitmap, SkBitmap::kARGB_8888_Config); |
| 132 | // now bitmap points to our temp, which has been promoted to 32bits |
| 133 | bitmap = &tmpBitmap; |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 134 | desc.fConfig = SkBitmapConfig2GrPixelConfig(bitmap->config()); |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 135 | } |
bsalomon@google.com | 5782d71 | 2011-01-21 21:03:59 +0000 | [diff] [blame] | 136 | } |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 137 | |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 138 | if (cache) { |
robertphillips@google.com | 9c2ea84 | 2012-08-13 17:47:59 +0000 | [diff] [blame] | 139 | // This texture is likely to be used again so leave it in the cache |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 140 | GrCacheID cacheID; |
| 141 | generate_bitmap_cache_id(origBitmap, &cacheID); |
| 142 | return ctx->createTexture(params, desc, cacheID, |
robertphillips@google.com | 9fbcad0 | 2012-09-09 14:44:15 +0000 | [diff] [blame] | 143 | bitmap->getPixels(), |
| 144 | bitmap->rowBytes()); |
junov@google.com | 4ee7ae5 | 2011-06-30 17:30:49 +0000 | [diff] [blame] | 145 | } else { |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 146 | // This texture is unlikely to be used again (in its present form) so |
| 147 | // just use a scratch texture. This will remove the texture from the |
| 148 | // cache so no one else can find it. Additionally, once unlocked, the |
| 149 | // scratch texture will go to the end of the list for purging so will |
robertphillips@google.com | 9c2ea84 | 2012-08-13 17:47:59 +0000 | [diff] [blame] | 150 | // likely be available for this volatile bitmap the next time around. |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 151 | GrTexture* result = ctx->lockScratchTexture(desc, GrContext::kExact_ScratchTexMatch); |
robertphillips@google.com | 1f47f4f | 2012-08-16 14:49:16 +0000 | [diff] [blame] | 152 | result->writePixels(0, 0, |
| 153 | bitmap->width(), bitmap->height(), |
| 154 | desc.fConfig, |
| 155 | bitmap->getPixels(), |
| 156 | bitmap->rowBytes()); |
| 157 | return result; |
junov@google.com | 4ee7ae5 | 2011-06-30 17:30:49 +0000 | [diff] [blame] | 158 | } |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 159 | } |
| 160 | |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 161 | bool GrIsBitmapInCache(const GrContext* ctx, |
| 162 | const SkBitmap& bitmap, |
| 163 | const GrTextureParams* params) { |
| 164 | GrCacheID cacheID; |
| 165 | generate_bitmap_cache_id(bitmap, &cacheID); |
| 166 | |
| 167 | GrTextureDesc desc; |
| 168 | generate_bitmap_texture_desc(bitmap, &desc); |
| 169 | return ctx->isTextureInCache(desc, cacheID, params); |
| 170 | } |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 171 | |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 172 | GrTexture* GrLockCachedBitmapTexture(GrContext* ctx, |
robertphillips@google.com | 1f47f4f | 2012-08-16 14:49:16 +0000 | [diff] [blame] | 173 | const SkBitmap& bitmap, |
| 174 | const GrTextureParams* params) { |
| 175 | GrTexture* result = NULL; |
rileya@google.com | 24f3ad1 | 2012-07-18 21:47:40 +0000 | [diff] [blame] | 176 | |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 177 | bool cache = !bitmap.isVolatile(); |
| 178 | |
| 179 | if (cache) { |
| 180 | // If the bitmap isn't changing try to find a cached copy first. |
| 181 | |
| 182 | GrCacheID cacheID; |
| 183 | generate_bitmap_cache_id(bitmap, &cacheID); |
rileya@google.com | 24f3ad1 | 2012-07-18 21:47:40 +0000 | [diff] [blame] | 184 | |
| 185 | GrTextureDesc desc; |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 186 | generate_bitmap_texture_desc(bitmap, &desc); |
rileya@google.com | 24f3ad1 | 2012-07-18 21:47:40 +0000 | [diff] [blame] | 187 | |
bsalomon@google.com | 0797c2c | 2012-12-20 15:13:01 +0000 | [diff] [blame^] | 188 | result = ctx->findTexture(desc, cacheID, params); |
| 189 | } |
| 190 | if (NULL == result) { |
| 191 | result = sk_gr_create_bitmap_texture(ctx, cache, params, bitmap); |
rileya@google.com | 24f3ad1 | 2012-07-18 21:47:40 +0000 | [diff] [blame] | 192 | } |
robertphillips@google.com | 1f47f4f | 2012-08-16 14:49:16 +0000 | [diff] [blame] | 193 | if (NULL == result) { |
rileya@google.com | 24f3ad1 | 2012-07-18 21:47:40 +0000 | [diff] [blame] | 194 | GrPrintf("---- failed to create texture for cache [%d %d]\n", |
| 195 | bitmap.width(), bitmap.height()); |
| 196 | } |
robertphillips@google.com | 1f47f4f | 2012-08-16 14:49:16 +0000 | [diff] [blame] | 197 | return result; |
rileya@google.com | 24f3ad1 | 2012-07-18 21:47:40 +0000 | [diff] [blame] | 198 | } |
| 199 | |
robertphillips@google.com | 1f47f4f | 2012-08-16 14:49:16 +0000 | [diff] [blame] | 200 | void GrUnlockCachedBitmapTexture(GrTexture* texture) { |
| 201 | GrAssert(NULL != texture->getContext()); |
| 202 | |
robertphillips@google.com | 9fbcad0 | 2012-09-09 14:44:15 +0000 | [diff] [blame] | 203 | texture->getContext()->unlockScratchTexture(texture); |
rileya@google.com | 24f3ad1 | 2012-07-18 21:47:40 +0000 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | /////////////////////////////////////////////////////////////////////////////// |
| 207 | |
rileya@google.com | 24f3ad1 | 2012-07-18 21:47:40 +0000 | [diff] [blame] | 208 | GrPixelConfig SkBitmapConfig2GrPixelConfig(SkBitmap::Config config) { |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 209 | switch (config) { |
| 210 | case SkBitmap::kA8_Config: |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 211 | return kAlpha_8_GrPixelConfig; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 212 | case SkBitmap::kIndex8_Config: |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 213 | return kIndex_8_GrPixelConfig; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 214 | case SkBitmap::kRGB_565_Config: |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 215 | return kRGB_565_GrPixelConfig; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 216 | case SkBitmap::kARGB_4444_Config: |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 217 | return kRGBA_4444_GrPixelConfig; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 218 | case SkBitmap::kARGB_8888_Config: |
bsalomon@google.com | c436499 | 2011-11-07 15:54:49 +0000 | [diff] [blame] | 219 | return kSkia8888_PM_GrPixelConfig; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 220 | default: |
robertphillips@google.com | a1e5795 | 2012-06-04 20:05:28 +0000 | [diff] [blame] | 221 | // kNo_Config, kA1_Config missing, and kRLE_Index8_Config |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 222 | return kUnknown_GrPixelConfig; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 223 | } |
| 224 | } |
| 225 | |