Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright (C) 2009 The Android Open Source Project |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #ifndef ANDROID_RS_BUILD_FOR_HOST |
| 19 | #include "rsContext.h" |
| 20 | #else |
| 21 | #include "rsContextHostStub.h" |
| 22 | #endif |
| 23 | |
| 24 | #include "rsFont.h" |
| 25 | #include "rsProgramFragment.h" |
Alex Sakhartchouk | c9fa305 | 2010-10-01 15:20:41 -0700 | [diff] [blame] | 26 | #include <cutils/properties.h> |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 27 | #include FT_BITMAP_H |
| 28 | |
| 29 | #include <GLES/gl.h> |
| 30 | #include <GLES/glext.h> |
| 31 | #include <GLES2/gl2.h> |
| 32 | #include <GLES2/gl2ext.h> |
| 33 | |
| 34 | using namespace android; |
| 35 | using namespace android::renderscript; |
| 36 | |
| 37 | Font::Font(Context *rsc) : ObjectBase(rsc), mCachedGlyphs(NULL) |
| 38 | { |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 39 | mAllocFile = __FILE__; |
| 40 | mAllocLine = __LINE__; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 41 | mInitialized = false; |
| 42 | mHasKerning = false; |
Alex Sakhartchouk | 3659d94 | 2010-06-30 16:53:43 -0700 | [diff] [blame] | 43 | mFace = NULL; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 44 | } |
| 45 | |
| 46 | bool Font::init(const char *name, uint32_t fontSize, uint32_t dpi) |
| 47 | { |
| 48 | if(mInitialized) { |
| 49 | LOGE("Reinitialization of fonts not supported"); |
| 50 | return false; |
| 51 | } |
| 52 | |
| 53 | String8 fontsDir("/fonts/"); |
| 54 | String8 fullPath(getenv("ANDROID_ROOT")); |
| 55 | fullPath += fontsDir; |
| 56 | fullPath += name; |
| 57 | |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 58 | FT_Error error = FT_New_Face(mRSC->mStateFont.getLib(), fullPath.string(), 0, &mFace); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 59 | if(error) { |
| 60 | LOGE("Unable to initialize font %s", fullPath.string()); |
| 61 | return false; |
| 62 | } |
| 63 | |
| 64 | mFontName = name; |
| 65 | mFontSize = fontSize; |
| 66 | mDpi = dpi; |
| 67 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 68 | error = FT_Set_Char_Size(mFace, fontSize * 64, 0, dpi, 0); |
| 69 | if(error) { |
| 70 | LOGE("Unable to set font size on %s", fullPath.string()); |
| 71 | return false; |
| 72 | } |
| 73 | |
| 74 | mHasKerning = FT_HAS_KERNING(mFace); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 75 | |
| 76 | mInitialized = true; |
| 77 | return true; |
| 78 | } |
| 79 | |
| 80 | void Font::invalidateTextureCache() |
| 81 | { |
| 82 | for(uint32_t i = 0; i < mCachedGlyphs.size(); i ++) { |
| 83 | mCachedGlyphs.valueAt(i)->mIsValid = false; |
| 84 | } |
| 85 | } |
| 86 | |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 87 | void Font::drawCachedGlyph(CachedGlyphInfo *glyph, int32_t x, int32_t y) |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 88 | { |
| 89 | FontState *state = &mRSC->mStateFont; |
| 90 | |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 91 | int32_t nPenX = x + glyph->mBitmapLeft; |
| 92 | int32_t nPenY = y - glyph->mBitmapTop + glyph->mBitmapHeight; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 93 | |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 94 | float u1 = glyph->mBitmapMinU; |
| 95 | float u2 = glyph->mBitmapMaxU; |
| 96 | float v1 = glyph->mBitmapMinV; |
| 97 | float v2 = glyph->mBitmapMaxV; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 98 | |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 99 | int32_t width = (int32_t) glyph->mBitmapWidth; |
| 100 | int32_t height = (int32_t) glyph->mBitmapHeight; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 101 | |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 102 | state->appendMeshQuad(nPenX, nPenY, 0, u1, v2, |
| 103 | nPenX + width, nPenY, 0, u2, v2, |
| 104 | nPenX + width, nPenY - height, 0, u2, v1, |
| 105 | nPenX, nPenY - height, 0, u1, v1); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 106 | } |
| 107 | |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 108 | void Font::drawCachedGlyph(CachedGlyphInfo* glyph, int32_t x, int32_t y, |
| 109 | uint8_t* bitmap, uint32_t bitmapW, uint32_t bitmapH) { |
| 110 | int32_t nPenX = x + glyph->mBitmapLeft; |
| 111 | int32_t nPenY = y + glyph->mBitmapTop; |
| 112 | |
| 113 | uint32_t endX = glyph->mBitmapMinX + glyph->mBitmapWidth; |
| 114 | uint32_t endY = glyph->mBitmapMinY + glyph->mBitmapHeight; |
| 115 | |
| 116 | FontState *state = &mRSC->mStateFont; |
| 117 | uint32_t cacheWidth = state->getCacheTextureType()->getDimX(); |
| 118 | const uint8_t* cacheBuffer = state->getTextTextureData(); |
| 119 | |
| 120 | uint32_t cacheX = 0, cacheY = 0; |
| 121 | int32_t bX = 0, bY = 0; |
| 122 | for (cacheX = glyph->mBitmapMinX, bX = nPenX; cacheX < endX; cacheX++, bX++) { |
| 123 | for (cacheY = glyph->mBitmapMinY, bY = nPenY; cacheY < endY; cacheY++, bY++) { |
| 124 | if (bX < 0 || bY < 0 || bX >= (int32_t) bitmapW || bY >= (int32_t) bitmapH) { |
| 125 | LOGE("Skipping invalid index"); |
| 126 | continue; |
| 127 | } |
| 128 | uint8_t tempCol = cacheBuffer[cacheY * cacheWidth + cacheX]; |
| 129 | bitmap[bY * bitmapW + bX] = tempCol; |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | } |
| 134 | |
| 135 | void Font::measureCachedGlyph(CachedGlyphInfo *glyph, int32_t x, int32_t y, Rect *bounds) { |
| 136 | int32_t nPenX = x + glyph->mBitmapLeft; |
| 137 | int32_t nPenY = y - glyph->mBitmapTop + glyph->mBitmapHeight; |
| 138 | |
| 139 | int32_t width = (int32_t) glyph->mBitmapWidth; |
| 140 | int32_t height = (int32_t) glyph->mBitmapHeight; |
| 141 | |
| 142 | if (bounds->bottom > nPenY) { |
| 143 | bounds->bottom = nPenY; |
| 144 | } |
| 145 | if (bounds->left > nPenX) { |
| 146 | bounds->left = nPenX; |
| 147 | } |
| 148 | if (bounds->right < nPenX + width) { |
| 149 | bounds->right = nPenX + width; |
| 150 | } |
| 151 | if (bounds->top < nPenY + height) { |
| 152 | bounds->top = nPenY + height; |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | void Font::renderUTF(const char *text, uint32_t len, int32_t x, int32_t y, |
| 157 | uint32_t start, int32_t numGlyphs, |
| 158 | RenderMode mode, Rect *bounds, |
| 159 | uint8_t *bitmap, uint32_t bitmapW, uint32_t bitmapH) |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 160 | { |
| 161 | if(!mInitialized || numGlyphs == 0 || text == NULL || len == 0) { |
| 162 | return; |
| 163 | } |
| 164 | |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 165 | if(mode == Font::MEASURE) { |
| 166 | if (bounds == NULL) { |
| 167 | LOGE("No return rectangle provided to measure text"); |
| 168 | return; |
| 169 | } |
| 170 | // Reset min and max of the bounding box to something large |
| 171 | bounds->set(1e6, -1e6, -1e6, 1e6); |
| 172 | } |
| 173 | |
| 174 | int32_t penX = x, penY = y; |
| 175 | int32_t glyphsLeft = 1; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 176 | if(numGlyphs > 0) { |
| 177 | glyphsLeft = numGlyphs; |
| 178 | } |
| 179 | |
| 180 | size_t index = start; |
| 181 | size_t nextIndex = 0; |
| 182 | |
| 183 | while (glyphsLeft > 0) { |
| 184 | |
| 185 | int32_t utfChar = utf32_at(text, len, index, &nextIndex); |
| 186 | |
| 187 | // Reached the end of the string or encountered |
| 188 | if(utfChar < 0) { |
| 189 | break; |
| 190 | } |
| 191 | |
| 192 | // Move to the next character in the array |
| 193 | index = nextIndex; |
| 194 | |
Alex Sakhartchouk | 01bcef6 | 2010-08-17 11:09:49 -0700 | [diff] [blame] | 195 | CachedGlyphInfo *cachedGlyph = getCachedUTFChar(utfChar); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 196 | |
| 197 | // If it's still not valid, we couldn't cache it, so we shouldn't draw garbage |
| 198 | if(cachedGlyph->mIsValid) { |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 199 | switch(mode) { |
| 200 | case FRAMEBUFFER: |
| 201 | drawCachedGlyph(cachedGlyph, penX, penY); |
| 202 | break; |
| 203 | case BITMAP: |
| 204 | drawCachedGlyph(cachedGlyph, penX, penY, bitmap, bitmapW, bitmapH); |
| 205 | break; |
| 206 | case MEASURE: |
| 207 | measureCachedGlyph(cachedGlyph, penX, penY, bounds); |
| 208 | break; |
| 209 | } |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | penX += (cachedGlyph->mAdvance.x >> 6); |
| 213 | |
| 214 | // If we were given a specific number of glyphs, decrement |
| 215 | if(numGlyphs > 0) { |
| 216 | glyphsLeft --; |
| 217 | } |
| 218 | } |
| 219 | } |
| 220 | |
Alex Sakhartchouk | 01bcef6 | 2010-08-17 11:09:49 -0700 | [diff] [blame] | 221 | Font::CachedGlyphInfo* Font::getCachedUTFChar(int32_t utfChar) { |
| 222 | |
| 223 | CachedGlyphInfo *cachedGlyph = mCachedGlyphs.valueFor((uint32_t)utfChar); |
| 224 | if(cachedGlyph == NULL) { |
| 225 | cachedGlyph = cacheGlyph((uint32_t)utfChar); |
| 226 | } |
| 227 | // Is the glyph still in texture cache? |
| 228 | if(!cachedGlyph->mIsValid) { |
| 229 | updateGlyphCache(cachedGlyph); |
| 230 | } |
| 231 | |
| 232 | return cachedGlyph; |
| 233 | } |
| 234 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 235 | void Font::updateGlyphCache(CachedGlyphInfo *glyph) |
| 236 | { |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 237 | FT_Error error = FT_Load_Glyph( mFace, glyph->mGlyphIndex, FT_LOAD_RENDER ); |
| 238 | if(error) { |
| 239 | LOGE("Couldn't load glyph."); |
| 240 | return; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 241 | } |
| 242 | |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 243 | glyph->mAdvance = mFace->glyph->advance; |
| 244 | glyph->mBitmapLeft = mFace->glyph->bitmap_left; |
| 245 | glyph->mBitmapTop = mFace->glyph->bitmap_top; |
| 246 | |
| 247 | FT_Bitmap *bitmap = &mFace->glyph->bitmap; |
| 248 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 249 | // Now copy the bitmap into the cache texture |
| 250 | uint32_t startX = 0; |
| 251 | uint32_t startY = 0; |
| 252 | |
| 253 | // Let the font state figure out where to put the bitmap |
| 254 | FontState *state = &mRSC->mStateFont; |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 255 | glyph->mIsValid = state->cacheBitmap(bitmap, &startX, &startY); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 256 | |
| 257 | if(!glyph->mIsValid) { |
| 258 | return; |
| 259 | } |
| 260 | |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 261 | uint32_t endX = startX + bitmap->width; |
| 262 | uint32_t endY = startY + bitmap->rows; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 263 | |
| 264 | glyph->mBitmapMinX = startX; |
| 265 | glyph->mBitmapMinY = startY; |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 266 | glyph->mBitmapWidth = bitmap->width; |
| 267 | glyph->mBitmapHeight = bitmap->rows; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 268 | |
| 269 | uint32_t cacheWidth = state->getCacheTextureType()->getDimX(); |
| 270 | uint32_t cacheHeight = state->getCacheTextureType()->getDimY(); |
| 271 | |
| 272 | glyph->mBitmapMinU = (float)startX / (float)cacheWidth; |
| 273 | glyph->mBitmapMinV = (float)startY / (float)cacheHeight; |
| 274 | glyph->mBitmapMaxU = (float)endX / (float)cacheWidth; |
| 275 | glyph->mBitmapMaxV = (float)endY / (float)cacheHeight; |
| 276 | } |
| 277 | |
| 278 | Font::CachedGlyphInfo *Font::cacheGlyph(uint32_t glyph) |
| 279 | { |
| 280 | CachedGlyphInfo *newGlyph = new CachedGlyphInfo(); |
| 281 | mCachedGlyphs.add(glyph, newGlyph); |
| 282 | |
| 283 | newGlyph->mGlyphIndex = FT_Get_Char_Index(mFace, glyph); |
| 284 | newGlyph->mIsValid = false; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 285 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 286 | updateGlyphCache(newGlyph); |
| 287 | |
| 288 | return newGlyph; |
| 289 | } |
| 290 | |
| 291 | Font * Font::create(Context *rsc, const char *name, uint32_t fontSize, uint32_t dpi) |
| 292 | { |
Alex Sakhartchouk | 35b9644 | 2010-08-18 15:46:43 -0700 | [diff] [blame] | 293 | rsc->mStateFont.checkInit(); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 294 | Vector<Font*> &activeFonts = rsc->mStateFont.mActiveFonts; |
| 295 | |
| 296 | for(uint32_t i = 0; i < activeFonts.size(); i ++) { |
| 297 | Font *ithFont = activeFonts[i]; |
| 298 | if(ithFont->mFontName == name && ithFont->mFontSize == fontSize && ithFont->mDpi == dpi) { |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 299 | return ithFont; |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | Font *newFont = new Font(rsc); |
| 304 | bool isInitialized = newFont->init(name, fontSize, dpi); |
| 305 | if(isInitialized) { |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 306 | activeFonts.push(newFont); |
Alex Sakhartchouk | 01bcef6 | 2010-08-17 11:09:49 -0700 | [diff] [blame] | 307 | rsc->mStateFont.precacheLatin(newFont); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 308 | return newFont; |
| 309 | } |
| 310 | |
| 311 | delete newFont; |
| 312 | return NULL; |
| 313 | |
| 314 | } |
| 315 | |
| 316 | Font::~Font() |
| 317 | { |
| 318 | if(mFace) { |
| 319 | FT_Done_Face(mFace); |
| 320 | } |
| 321 | |
| 322 | for (uint32_t ct = 0; ct < mRSC->mStateFont.mActiveFonts.size(); ct++) { |
| 323 | if (mRSC->mStateFont.mActiveFonts[ct] == this) { |
| 324 | mRSC->mStateFont.mActiveFonts.removeAt(ct); |
| 325 | break; |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | for(uint32_t i = 0; i < mCachedGlyphs.size(); i ++) { |
| 330 | CachedGlyphInfo *glyph = mCachedGlyphs.valueAt(i); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 331 | delete glyph; |
| 332 | } |
| 333 | } |
| 334 | |
| 335 | FontState::FontState() |
| 336 | { |
| 337 | mInitialized = false; |
| 338 | mMaxNumberOfQuads = 1024; |
| 339 | mCurrentQuadIndex = 0; |
| 340 | mRSC = NULL; |
Alex Sakhartchouk | 3659d94 | 2010-06-30 16:53:43 -0700 | [diff] [blame] | 341 | mLibrary = NULL; |
Alex Sakhartchouk | ca5a454 | 2010-08-05 11:24:14 -0700 | [diff] [blame] | 342 | setFontColor(0.1f, 0.1f, 0.1f, 1.0f); |
Alex Sakhartchouk | c9fa305 | 2010-10-01 15:20:41 -0700 | [diff] [blame] | 343 | |
| 344 | // Get the renderer properties |
| 345 | char property[PROPERTY_VALUE_MAX]; |
| 346 | |
| 347 | // Get the gamma |
| 348 | float gamma = DEFAULT_TEXT_GAMMA; |
| 349 | if (property_get(PROPERTY_TEXT_GAMMA, property, NULL) > 0) { |
| 350 | LOGD(" Setting text gamma to %s", property); |
| 351 | gamma = atof(property); |
| 352 | } else { |
| 353 | LOGD(" Using default text gamma of %.2f", DEFAULT_TEXT_GAMMA); |
| 354 | } |
| 355 | |
| 356 | // Get the black gamma threshold |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 357 | int32_t blackThreshold = DEFAULT_TEXT_BLACK_GAMMA_THRESHOLD; |
Alex Sakhartchouk | c9fa305 | 2010-10-01 15:20:41 -0700 | [diff] [blame] | 358 | if (property_get(PROPERTY_TEXT_BLACK_GAMMA_THRESHOLD, property, NULL) > 0) { |
| 359 | LOGD(" Setting text black gamma threshold to %s", property); |
| 360 | blackThreshold = atoi(property); |
| 361 | } else { |
| 362 | LOGD(" Using default text black gamma threshold of %d", |
| 363 | DEFAULT_TEXT_BLACK_GAMMA_THRESHOLD); |
| 364 | } |
| 365 | mBlackThreshold = (float)(blackThreshold) / 255.0f; |
| 366 | |
| 367 | // Get the white gamma threshold |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 368 | int32_t whiteThreshold = DEFAULT_TEXT_WHITE_GAMMA_THRESHOLD; |
Alex Sakhartchouk | c9fa305 | 2010-10-01 15:20:41 -0700 | [diff] [blame] | 369 | if (property_get(PROPERTY_TEXT_WHITE_GAMMA_THRESHOLD, property, NULL) > 0) { |
| 370 | LOGD(" Setting text white gamma threshold to %s", property); |
| 371 | whiteThreshold = atoi(property); |
| 372 | } else { |
| 373 | LOGD(" Using default white black gamma threshold of %d", |
| 374 | DEFAULT_TEXT_WHITE_GAMMA_THRESHOLD); |
| 375 | } |
| 376 | mWhiteThreshold = (float)(whiteThreshold) / 255.0f; |
| 377 | |
| 378 | // Compute the gamma tables |
| 379 | mBlackGamma = gamma; |
| 380 | mWhiteGamma = 1.0f / gamma; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 381 | } |
| 382 | |
| 383 | FontState::~FontState() |
| 384 | { |
| 385 | for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 386 | delete mCacheLines[i]; |
| 387 | } |
| 388 | |
| 389 | rsAssert(!mActiveFonts.size()); |
| 390 | } |
| 391 | |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 392 | FT_Library FontState::getLib() |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 393 | { |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 394 | if(!mLibrary) { |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 395 | FT_Error error = FT_Init_FreeType(&mLibrary); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 396 | if(error) { |
| 397 | LOGE("Unable to initialize freetype"); |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 398 | return NULL; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 399 | } |
| 400 | } |
Alex Sakhartchouk | 3659d94 | 2010-06-30 16:53:43 -0700 | [diff] [blame] | 401 | |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 402 | return mLibrary; |
| 403 | } |
| 404 | |
| 405 | void FontState::init(Context *rsc) |
| 406 | { |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 407 | mRSC = rsc; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | void FontState::flushAllAndInvalidate() |
| 411 | { |
| 412 | if(mCurrentQuadIndex != 0) { |
| 413 | issueDrawCommand(); |
| 414 | mCurrentQuadIndex = 0; |
| 415 | } |
| 416 | for(uint32_t i = 0; i < mActiveFonts.size(); i ++) { |
| 417 | mActiveFonts[i]->invalidateTextureCache(); |
| 418 | } |
| 419 | for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 420 | mCacheLines[i]->mCurrentCol = 0; |
| 421 | } |
| 422 | } |
| 423 | |
| 424 | bool FontState::cacheBitmap(FT_Bitmap *bitmap, uint32_t *retOriginX, uint32_t *retOriginY) |
| 425 | { |
| 426 | // If the glyph is too tall, don't cache it |
| 427 | if((uint32_t)bitmap->rows > mCacheLines[mCacheLines.size()-1]->mMaxHeight) { |
| 428 | LOGE("Font size to large to fit in cache. width, height = %i, %i", (int)bitmap->width, (int)bitmap->rows); |
| 429 | return false; |
| 430 | } |
| 431 | |
| 432 | // Now copy the bitmap into the cache texture |
| 433 | uint32_t startX = 0; |
| 434 | uint32_t startY = 0; |
| 435 | |
| 436 | bool bitmapFit = false; |
| 437 | for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 438 | bitmapFit = mCacheLines[i]->fitBitmap(bitmap, &startX, &startY); |
| 439 | if(bitmapFit) { |
| 440 | break; |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | // If the new glyph didn't fit, flush the state so far and invalidate everything |
| 445 | if(!bitmapFit) { |
| 446 | flushAllAndInvalidate(); |
| 447 | |
| 448 | // Try to fit it again |
| 449 | for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 450 | bitmapFit = mCacheLines[i]->fitBitmap(bitmap, &startX, &startY); |
| 451 | if(bitmapFit) { |
| 452 | break; |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | // if we still don't fit, something is wrong and we shouldn't draw |
| 457 | if(!bitmapFit) { |
| 458 | LOGE("Bitmap doesn't fit in cache. width, height = %i, %i", (int)bitmap->width, (int)bitmap->rows); |
| 459 | return false; |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | *retOriginX = startX; |
| 464 | *retOriginY = startY; |
| 465 | |
| 466 | uint32_t endX = startX + bitmap->width; |
| 467 | uint32_t endY = startY + bitmap->rows; |
| 468 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 469 | uint32_t cacheWidth = getCacheTextureType()->getDimX(); |
| 470 | |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 471 | uint8_t *cacheBuffer = (uint8_t*)mTextTexture->getPtr(); |
| 472 | uint8_t *bitmapBuffer = bitmap->buffer; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 473 | |
| 474 | uint32_t cacheX = 0, bX = 0, cacheY = 0, bY = 0; |
| 475 | for(cacheX = startX, bX = 0; cacheX < endX; cacheX ++, bX ++) { |
| 476 | for(cacheY = startY, bY = 0; cacheY < endY; cacheY ++, bY ++) { |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 477 | uint8_t tempCol = bitmapBuffer[bY * bitmap->width + bX]; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 478 | cacheBuffer[cacheY*cacheWidth + cacheX] = tempCol; |
| 479 | } |
| 480 | } |
| 481 | |
| 482 | // This will dirty the texture and the shader so next time |
| 483 | // we draw it will upload the data |
| 484 | mTextTexture->deferedUploadToTexture(mRSC, false, 0); |
Alex Sakhartchouk | 383e5b1 | 2010-09-23 16:16:33 -0700 | [diff] [blame] | 485 | mFontShaderF->bindTexture(mRSC, 0, mTextTexture.get()); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 486 | |
| 487 | // Some debug code |
| 488 | /*for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 489 | LOGE("Cache Line: H: %u Empty Space: %f", |
| 490 | mCacheLines[i]->mMaxHeight, |
| 491 | (1.0f - (float)mCacheLines[i]->mCurrentCol/(float)mCacheLines[i]->mMaxWidth)*100.0f); |
| 492 | |
| 493 | }*/ |
| 494 | |
| 495 | return true; |
| 496 | } |
| 497 | |
| 498 | void FontState::initRenderState() |
| 499 | { |
Alex Sakhartchouk | 7ffcaf2 | 2010-10-06 11:15:01 -0700 | [diff] [blame^] | 500 | String8 shaderString("varying vec2 varTex0;\n"); |
Alex Sakhartchouk | e7ae69f | 2010-09-14 09:50:43 -0700 | [diff] [blame] | 501 | shaderString.append("void main() {\n"); |
| 502 | shaderString.append(" lowp vec4 col = UNI_Color;\n"); |
| 503 | shaderString.append(" col.a = texture2D(UNI_Tex0, varTex0.xy).a;\n"); |
Alex Sakhartchouk | c9fa305 | 2010-10-01 15:20:41 -0700 | [diff] [blame] | 504 | shaderString.append(" col.a = pow(col.a, UNI_Gamma);\n"); |
Alex Sakhartchouk | e7ae69f | 2010-09-14 09:50:43 -0700 | [diff] [blame] | 505 | shaderString.append(" gl_FragColor = col;\n"); |
| 506 | shaderString.append("}\n"); |
| 507 | |
| 508 | const Element *colorElem = Element::create(mRSC, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 4); |
Alex Sakhartchouk | c9fa305 | 2010-10-01 15:20:41 -0700 | [diff] [blame] | 509 | const Element *gammaElem = Element::create(mRSC, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 1); |
Alex Sakhartchouk | e7ae69f | 2010-09-14 09:50:43 -0700 | [diff] [blame] | 510 | mRSC->mStateElement.elementBuilderBegin(); |
| 511 | mRSC->mStateElement.elementBuilderAdd(colorElem, "Color", 1); |
Alex Sakhartchouk | c9fa305 | 2010-10-01 15:20:41 -0700 | [diff] [blame] | 512 | mRSC->mStateElement.elementBuilderAdd(gammaElem, "Gamma", 1); |
Alex Sakhartchouk | e7ae69f | 2010-09-14 09:50:43 -0700 | [diff] [blame] | 513 | const Element *constInput = mRSC->mStateElement.elementBuilderCreate(mRSC); |
| 514 | |
| 515 | Type *inputType = new Type(mRSC); |
| 516 | inputType->setElement(constInput); |
| 517 | inputType->setDimX(1); |
| 518 | inputType->compute(); |
| 519 | |
| 520 | uint32_t tmp[4]; |
| 521 | tmp[0] = RS_PROGRAM_PARAM_CONSTANT; |
| 522 | tmp[1] = (uint32_t)inputType; |
| 523 | tmp[2] = RS_PROGRAM_PARAM_TEXTURE_COUNT; |
| 524 | tmp[3] = 1; |
| 525 | |
| 526 | mFontShaderFConstant.set(new Allocation(mRSC, inputType)); |
| 527 | ProgramFragment *pf = new ProgramFragment(mRSC, shaderString.string(), |
| 528 | shaderString.length(), tmp, 4); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 529 | mFontShaderF.set(pf); |
Alex Sakhartchouk | 383e5b1 | 2010-09-23 16:16:33 -0700 | [diff] [blame] | 530 | mFontShaderF->bindAllocation(mRSC, mFontShaderFConstant.get(), 0); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 531 | |
| 532 | Sampler *sampler = new Sampler(mRSC, RS_SAMPLER_NEAREST, RS_SAMPLER_NEAREST, |
| 533 | RS_SAMPLER_CLAMP, RS_SAMPLER_CLAMP, RS_SAMPLER_CLAMP); |
| 534 | mFontSampler.set(sampler); |
Alex Sakhartchouk | 383e5b1 | 2010-09-23 16:16:33 -0700 | [diff] [blame] | 535 | mFontShaderF->bindSampler(mRSC, 0, sampler); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 536 | |
| 537 | ProgramStore *fontStore = new ProgramStore(mRSC); |
| 538 | mFontProgramStore.set(fontStore); |
| 539 | mFontProgramStore->setDepthFunc(RS_DEPTH_FUNC_ALWAYS); |
| 540 | mFontProgramStore->setBlendFunc(RS_BLEND_SRC_SRC_ALPHA, RS_BLEND_DST_ONE_MINUS_SRC_ALPHA); |
| 541 | mFontProgramStore->setDitherEnable(false); |
| 542 | mFontProgramStore->setDepthMask(false); |
| 543 | } |
| 544 | |
| 545 | void FontState::initTextTexture() |
| 546 | { |
| 547 | const Element *alphaElem = Element::create(mRSC, RS_TYPE_UNSIGNED_8, RS_KIND_PIXEL_A, true, 1); |
| 548 | |
| 549 | // We will allocate a texture to initially hold 32 character bitmaps |
| 550 | Type *texType = new Type(mRSC); |
| 551 | texType->setElement(alphaElem); |
| 552 | texType->setDimX(1024); |
| 553 | texType->setDimY(256); |
| 554 | texType->compute(); |
| 555 | |
| 556 | Allocation *cacheAlloc = new Allocation(mRSC, texType); |
| 557 | mTextTexture.set(cacheAlloc); |
| 558 | mTextTexture->deferedUploadToTexture(mRSC, false, 0); |
| 559 | |
| 560 | // Split up our cache texture into lines of certain widths |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 561 | int32_t nextLine = 0; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 562 | mCacheLines.push(new CacheTextureLine(16, texType->getDimX(), nextLine, 0)); |
| 563 | nextLine += mCacheLines.top()->mMaxHeight; |
| 564 | mCacheLines.push(new CacheTextureLine(24, texType->getDimX(), nextLine, 0)); |
| 565 | nextLine += mCacheLines.top()->mMaxHeight; |
Alex Sakhartchouk | 01bcef6 | 2010-08-17 11:09:49 -0700 | [diff] [blame] | 566 | mCacheLines.push(new CacheTextureLine(24, texType->getDimX(), nextLine, 0)); |
| 567 | nextLine += mCacheLines.top()->mMaxHeight; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 568 | mCacheLines.push(new CacheTextureLine(32, texType->getDimX(), nextLine, 0)); |
| 569 | nextLine += mCacheLines.top()->mMaxHeight; |
| 570 | mCacheLines.push(new CacheTextureLine(32, texType->getDimX(), nextLine, 0)); |
| 571 | nextLine += mCacheLines.top()->mMaxHeight; |
| 572 | mCacheLines.push(new CacheTextureLine(40, texType->getDimX(), nextLine, 0)); |
| 573 | nextLine += mCacheLines.top()->mMaxHeight; |
| 574 | mCacheLines.push(new CacheTextureLine(texType->getDimY() - nextLine, texType->getDimX(), nextLine, 0)); |
| 575 | } |
| 576 | |
| 577 | // Avoid having to reallocate memory and render quad by quad |
| 578 | void FontState::initVertexArrayBuffers() |
| 579 | { |
| 580 | // Now lets write index data |
| 581 | const Element *indexElem = Element::create(mRSC, RS_TYPE_UNSIGNED_16, RS_KIND_USER, false, 1); |
| 582 | Type *indexType = new Type(mRSC); |
| 583 | uint32_t numIndicies = mMaxNumberOfQuads * 6; |
| 584 | indexType->setDimX(numIndicies); |
| 585 | indexType->setElement(indexElem); |
| 586 | indexType->compute(); |
| 587 | |
| 588 | Allocation *indexAlloc = new Allocation(mRSC, indexType); |
| 589 | uint16_t *indexPtr = (uint16_t*)indexAlloc->getPtr(); |
| 590 | |
| 591 | // Four verts, two triangles , six indices per quad |
| 592 | for(uint32_t i = 0; i < mMaxNumberOfQuads; i ++) { |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 593 | int32_t i6 = i * 6; |
| 594 | int32_t i4 = i * 4; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 595 | |
| 596 | indexPtr[i6 + 0] = i4 + 0; |
| 597 | indexPtr[i6 + 1] = i4 + 1; |
| 598 | indexPtr[i6 + 2] = i4 + 2; |
| 599 | |
| 600 | indexPtr[i6 + 3] = i4 + 0; |
| 601 | indexPtr[i6 + 4] = i4 + 2; |
| 602 | indexPtr[i6 + 5] = i4 + 3; |
| 603 | } |
| 604 | |
| 605 | indexAlloc->deferedUploadToBufferObject(mRSC); |
| 606 | mIndexBuffer.set(indexAlloc); |
| 607 | |
| 608 | const Element *posElem = Element::create(mRSC, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 3); |
| 609 | const Element *texElem = Element::create(mRSC, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 2); |
| 610 | |
| 611 | const Element *elemArray[2]; |
| 612 | elemArray[0] = posElem; |
| 613 | elemArray[1] = texElem; |
| 614 | |
| 615 | String8 posName("position"); |
| 616 | String8 texName("texture0"); |
| 617 | |
| 618 | const char *nameArray[2]; |
| 619 | nameArray[0] = posName.string(); |
| 620 | nameArray[1] = texName.string(); |
| 621 | size_t lengths[2]; |
| 622 | lengths[0] = posName.size(); |
| 623 | lengths[1] = texName.size(); |
Jason Sams | 46e4554 | 2010-09-02 17:35:23 -0700 | [diff] [blame] | 624 | uint32_t arraySizes[2] = {1, 1}; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 625 | |
Jason Sams | 46e4554 | 2010-09-02 17:35:23 -0700 | [diff] [blame] | 626 | const Element *vertexDataElem = Element::create(mRSC, 2, elemArray, nameArray, lengths, arraySizes); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 627 | |
| 628 | Type *vertexDataType = new Type(mRSC); |
| 629 | vertexDataType->setDimX(mMaxNumberOfQuads * 4); |
| 630 | vertexDataType->setElement(vertexDataElem); |
| 631 | vertexDataType->compute(); |
| 632 | |
| 633 | Allocation *vertexAlloc = new Allocation(mRSC, vertexDataType); |
| 634 | mTextMeshPtr = (float*)vertexAlloc->getPtr(); |
| 635 | |
| 636 | mVertexArray.set(vertexAlloc); |
| 637 | } |
| 638 | |
| 639 | // We don't want to allocate anything unless we actually draw text |
| 640 | void FontState::checkInit() |
| 641 | { |
| 642 | if(mInitialized) { |
| 643 | return; |
| 644 | } |
| 645 | |
| 646 | initTextTexture(); |
| 647 | initRenderState(); |
| 648 | |
| 649 | initVertexArrayBuffers(); |
| 650 | |
Alex Sakhartchouk | 35b9644 | 2010-08-18 15:46:43 -0700 | [diff] [blame] | 651 | // We store a string with letters in a rough frequency of occurrence |
| 652 | mLatinPrecache = String8(" eisarntolcdugpmhbyfvkwzxjq"); |
| 653 | mLatinPrecache += String8("EISARNTOLCDUGPMHBYFVKWZXJQ"); |
| 654 | mLatinPrecache += String8(",.?!()-+@;:`'"); |
| 655 | mLatinPrecache += String8("0123456789"); |
| 656 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 657 | mInitialized = true; |
| 658 | } |
| 659 | |
| 660 | void FontState::issueDrawCommand() { |
| 661 | |
| 662 | ObjectBaseRef<const ProgramVertex> tmpV(mRSC->getVertex()); |
| 663 | mRSC->setVertex(mRSC->getDefaultProgramVertex()); |
| 664 | |
Alex Sakhartchouk | d18c744 | 2010-07-12 15:50:32 -0700 | [diff] [blame] | 665 | ObjectBaseRef<const ProgramRaster> tmpR(mRSC->getRaster()); |
| 666 | mRSC->setRaster(mRSC->getDefaultProgramRaster()); |
| 667 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 668 | ObjectBaseRef<const ProgramFragment> tmpF(mRSC->getFragment()); |
| 669 | mRSC->setFragment(mFontShaderF.get()); |
| 670 | |
| 671 | ObjectBaseRef<const ProgramStore> tmpPS(mRSC->getFragmentStore()); |
| 672 | mRSC->setFragmentStore(mFontProgramStore.get()); |
| 673 | |
Alex Sakhartchouk | c9fa305 | 2010-10-01 15:20:41 -0700 | [diff] [blame] | 674 | if(mConstantsDirty) { |
| 675 | mFontShaderFConstant->data(mRSC, &mConstants, sizeof(mConstants)); |
| 676 | mConstantsDirty = false; |
Alex Sakhartchouk | ca5a454 | 2010-08-05 11:24:14 -0700 | [diff] [blame] | 677 | } |
| 678 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 679 | if (!mRSC->setupCheck()) { |
| 680 | mRSC->setVertex((ProgramVertex *)tmpV.get()); |
Alex Sakhartchouk | d18c744 | 2010-07-12 15:50:32 -0700 | [diff] [blame] | 681 | mRSC->setRaster((ProgramRaster *)tmpR.get()); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 682 | mRSC->setFragment((ProgramFragment *)tmpF.get()); |
| 683 | mRSC->setFragmentStore((ProgramStore *)tmpPS.get()); |
| 684 | return; |
| 685 | } |
| 686 | |
| 687 | float *vtx = (float*)mVertexArray->getPtr(); |
| 688 | float *tex = vtx + 3; |
| 689 | |
| 690 | VertexArray va; |
Alex Sakhartchouk | 886f11a | 2010-09-29 09:49:13 -0700 | [diff] [blame] | 691 | va.add(GL_FLOAT, 3, 20, false, (uint32_t)vtx, "ATTRIB_position"); |
| 692 | va.add(GL_FLOAT, 2, 20, false, (uint32_t)tex, "ATTRIB_texture0"); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 693 | va.setupGL2(mRSC, &mRSC->mStateVertexArray, &mRSC->mShaderCache); |
| 694 | |
| 695 | mIndexBuffer->uploadCheck(mRSC); |
| 696 | glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mIndexBuffer->getBufferObjectID()); |
| 697 | glDrawElements(GL_TRIANGLES, mCurrentQuadIndex * 6, GL_UNSIGNED_SHORT, (uint16_t *)(0)); |
| 698 | |
| 699 | // Reset the state |
| 700 | mRSC->setVertex((ProgramVertex *)tmpV.get()); |
Alex Sakhartchouk | d18c744 | 2010-07-12 15:50:32 -0700 | [diff] [blame] | 701 | mRSC->setRaster((ProgramRaster *)tmpR.get()); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 702 | mRSC->setFragment((ProgramFragment *)tmpF.get()); |
| 703 | mRSC->setFragmentStore((ProgramStore *)tmpPS.get()); |
| 704 | } |
| 705 | |
| 706 | void FontState::appendMeshQuad(float x1, float y1, float z1, |
| 707 | float u1, float v1, |
| 708 | float x2, float y2, float z2, |
| 709 | float u2, float v2, |
| 710 | float x3, float y3, float z3, |
| 711 | float u3, float v3, |
| 712 | float x4, float y4, float z4, |
| 713 | float u4, float v4) |
| 714 | { |
| 715 | const uint32_t vertsPerQuad = 4; |
| 716 | const uint32_t floatsPerVert = 5; |
| 717 | float *currentPos = mTextMeshPtr + mCurrentQuadIndex * vertsPerQuad * floatsPerVert; |
| 718 | |
| 719 | // Cull things that are off the screen |
| 720 | float width = (float)mRSC->getWidth(); |
| 721 | float height = (float)mRSC->getHeight(); |
| 722 | |
| 723 | if(x1 > width || y1 < 0.0f || x2 < 0 || y4 > height) { |
| 724 | return; |
| 725 | } |
| 726 | |
| 727 | /*LOGE("V0 x: %f y: %f z: %f", x1, y1, z1); |
| 728 | LOGE("V1 x: %f y: %f z: %f", x2, y2, z2); |
| 729 | LOGE("V2 x: %f y: %f z: %f", x3, y3, z3); |
| 730 | LOGE("V3 x: %f y: %f z: %f", x4, y4, z4);*/ |
| 731 | |
| 732 | (*currentPos++) = x1; |
| 733 | (*currentPos++) = y1; |
| 734 | (*currentPos++) = z1; |
| 735 | (*currentPos++) = u1; |
| 736 | (*currentPos++) = v1; |
| 737 | |
| 738 | (*currentPos++) = x2; |
| 739 | (*currentPos++) = y2; |
| 740 | (*currentPos++) = z2; |
| 741 | (*currentPos++) = u2; |
| 742 | (*currentPos++) = v2; |
| 743 | |
| 744 | (*currentPos++) = x3; |
| 745 | (*currentPos++) = y3; |
| 746 | (*currentPos++) = z3; |
| 747 | (*currentPos++) = u3; |
| 748 | (*currentPos++) = v3; |
| 749 | |
| 750 | (*currentPos++) = x4; |
| 751 | (*currentPos++) = y4; |
| 752 | (*currentPos++) = z4; |
| 753 | (*currentPos++) = u4; |
| 754 | (*currentPos++) = v4; |
| 755 | |
| 756 | mCurrentQuadIndex ++; |
| 757 | |
| 758 | if(mCurrentQuadIndex == mMaxNumberOfQuads) { |
| 759 | issueDrawCommand(); |
| 760 | mCurrentQuadIndex = 0; |
| 761 | } |
| 762 | } |
| 763 | |
Alex Sakhartchouk | 01bcef6 | 2010-08-17 11:09:49 -0700 | [diff] [blame] | 764 | uint32_t FontState::getRemainingCacheCapacity() { |
| 765 | uint32_t remainingCapacity = 0; |
Alex Sakhartchouk | 35b9644 | 2010-08-18 15:46:43 -0700 | [diff] [blame] | 766 | uint32_t totalPixels = 0; |
Alex Sakhartchouk | 01bcef6 | 2010-08-17 11:09:49 -0700 | [diff] [blame] | 767 | for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 768 | remainingCapacity += (mCacheLines[i]->mMaxWidth - mCacheLines[i]->mCurrentCol); |
| 769 | totalPixels += mCacheLines[i]->mMaxWidth; |
| 770 | } |
| 771 | remainingCapacity = (remainingCapacity * 100) / totalPixels; |
| 772 | return remainingCapacity; |
| 773 | } |
| 774 | |
| 775 | void FontState::precacheLatin(Font *font) { |
| 776 | // Remaining capacity is measured in % |
| 777 | uint32_t remainingCapacity = getRemainingCacheCapacity(); |
| 778 | uint32_t precacheIdx = 0; |
| 779 | while(remainingCapacity > 25 && precacheIdx < mLatinPrecache.size()) { |
| 780 | font->getCachedUTFChar((int32_t)mLatinPrecache[precacheIdx]); |
| 781 | remainingCapacity = getRemainingCacheCapacity(); |
| 782 | precacheIdx ++; |
| 783 | } |
| 784 | } |
| 785 | |
| 786 | |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 787 | void FontState::renderText(const char *text, uint32_t len, int32_t x, int32_t y, |
| 788 | uint32_t startIndex, int32_t numGlyphs, |
| 789 | Font::RenderMode mode, |
| 790 | Font::Rect *bounds, |
| 791 | uint8_t *bitmap, uint32_t bitmapW, uint32_t bitmapH) |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 792 | { |
| 793 | checkInit(); |
| 794 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 795 | // Render code here |
| 796 | Font *currentFont = mRSC->getFont(); |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 797 | if(!currentFont) { |
| 798 | if(!mDefault.get()) { |
| 799 | mDefault.set(Font::create(mRSC, "DroidSans.ttf", 16, 96)); |
| 800 | } |
| 801 | currentFont = mDefault.get(); |
| 802 | } |
Alex Sakhartchouk | 3659d94 | 2010-06-30 16:53:43 -0700 | [diff] [blame] | 803 | if(!currentFont) { |
| 804 | LOGE("Unable to initialize any fonts"); |
| 805 | return; |
| 806 | } |
| 807 | |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 808 | currentFont->renderUTF(text, len, x, y, startIndex, numGlyphs, |
| 809 | mode, bounds, bitmap, bitmapW, bitmapH); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 810 | |
| 811 | if(mCurrentQuadIndex != 0) { |
| 812 | issueDrawCommand(); |
| 813 | mCurrentQuadIndex = 0; |
| 814 | } |
| 815 | } |
| 816 | |
Alex Sakhartchouk | 09c6735 | 2010-10-05 11:33:27 -0700 | [diff] [blame] | 817 | void FontState::measureText(const char *text, uint32_t len, Font::Rect *bounds) { |
| 818 | renderText(text, len, 0, 0, 0, -1, Font::MEASURE, bounds); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 819 | } |
| 820 | |
Alex Sakhartchouk | 9fc9f03 | 2010-08-04 14:45:48 -0700 | [diff] [blame] | 821 | void FontState::setFontColor(float r, float g, float b, float a) { |
Alex Sakhartchouk | c9fa305 | 2010-10-01 15:20:41 -0700 | [diff] [blame] | 822 | mConstants.mFontColor[0] = r; |
| 823 | mConstants.mFontColor[1] = g; |
| 824 | mConstants.mFontColor[2] = b; |
| 825 | mConstants.mFontColor[3] = a; |
| 826 | |
| 827 | mConstants.mGamma = 1.0f; |
Alex Sakhartchouk | c8fb69e | 2010-10-05 13:23:55 -0700 | [diff] [blame] | 828 | const float luminance = (r * 2.0f + g * 5.0f + b) / 8.0f; |
Alex Sakhartchouk | c9fa305 | 2010-10-01 15:20:41 -0700 | [diff] [blame] | 829 | if (luminance <= mBlackThreshold) { |
| 830 | mConstants.mGamma = mBlackGamma; |
| 831 | } else if (luminance >= mWhiteThreshold) { |
| 832 | mConstants.mGamma = mWhiteGamma; |
| 833 | } |
| 834 | mConstantsDirty = true; |
Alex Sakhartchouk | 9fc9f03 | 2010-08-04 14:45:48 -0700 | [diff] [blame] | 835 | } |
| 836 | |
Alex Sakhartchouk | ca5a454 | 2010-08-05 11:24:14 -0700 | [diff] [blame] | 837 | void FontState::getFontColor(float *r, float *g, float *b, float *a) const { |
Alex Sakhartchouk | c9fa305 | 2010-10-01 15:20:41 -0700 | [diff] [blame] | 838 | *r = mConstants.mFontColor[0]; |
| 839 | *g = mConstants.mFontColor[1]; |
| 840 | *b = mConstants.mFontColor[2]; |
| 841 | *a = mConstants.mFontColor[3]; |
Alex Sakhartchouk | ca5a454 | 2010-08-05 11:24:14 -0700 | [diff] [blame] | 842 | } |
| 843 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 844 | void FontState::deinit(Context *rsc) |
| 845 | { |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 846 | mInitialized = false; |
| 847 | |
Stephen Hines | 01b7d29 | 2010-09-28 15:45:45 -0700 | [diff] [blame] | 848 | mFontShaderFConstant.clear(); |
| 849 | |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 850 | mIndexBuffer.clear(); |
| 851 | mVertexArray.clear(); |
| 852 | |
| 853 | mFontShaderF.clear(); |
| 854 | mFontSampler.clear(); |
| 855 | mFontProgramStore.clear(); |
| 856 | |
| 857 | mTextTexture.clear(); |
| 858 | for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 859 | delete mCacheLines[i]; |
| 860 | } |
| 861 | mCacheLines.clear(); |
| 862 | |
| 863 | mDefault.clear(); |
| 864 | |
Alex Sakhartchouk | 3659d94 | 2010-06-30 16:53:43 -0700 | [diff] [blame] | 865 | Vector<Font*> fontsToDereference = mActiveFonts; |
| 866 | for(uint32_t i = 0; i < fontsToDereference.size(); i ++) { |
| 867 | fontsToDereference[i]->zeroUserRef(); |
| 868 | } |
| 869 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 870 | if(mLibrary) { |
| 871 | FT_Done_FreeType( mLibrary ); |
Alex Sakhartchouk | 3659d94 | 2010-06-30 16:53:43 -0700 | [diff] [blame] | 872 | mLibrary = NULL; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 873 | } |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 874 | } |
| 875 | |
| 876 | namespace android { |
| 877 | namespace renderscript { |
| 878 | |
| 879 | RsFont rsi_FontCreateFromFile(Context *rsc, char const *name, uint32_t fontSize, uint32_t dpi) |
| 880 | { |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 881 | Font *newFont = Font::create(rsc, name, fontSize, dpi); |
| 882 | if(newFont) { |
| 883 | newFont->incUserRef(); |
| 884 | } |
| 885 | return newFont; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 886 | } |
| 887 | |
| 888 | } // renderscript |
| 889 | } // android |