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" |
| 26 | #include FT_BITMAP_H |
| 27 | |
| 28 | #include <GLES/gl.h> |
| 29 | #include <GLES/glext.h> |
| 30 | #include <GLES2/gl2.h> |
| 31 | #include <GLES2/gl2ext.h> |
| 32 | |
| 33 | using namespace android; |
| 34 | using namespace android::renderscript; |
| 35 | |
| 36 | Font::Font(Context *rsc) : ObjectBase(rsc), mCachedGlyphs(NULL) |
| 37 | { |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 38 | mAllocFile = __FILE__; |
| 39 | mAllocLine = __LINE__; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 40 | mInitialized = false; |
| 41 | mHasKerning = false; |
Alex Sakhartchouk | 3659d94 | 2010-06-30 16:53:43 -0700 | [diff] [blame] | 42 | mFace = NULL; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | bool Font::init(const char *name, uint32_t fontSize, uint32_t dpi) |
| 46 | { |
| 47 | if(mInitialized) { |
| 48 | LOGE("Reinitialization of fonts not supported"); |
| 49 | return false; |
| 50 | } |
| 51 | |
| 52 | String8 fontsDir("/fonts/"); |
| 53 | String8 fullPath(getenv("ANDROID_ROOT")); |
| 54 | fullPath += fontsDir; |
| 55 | fullPath += name; |
| 56 | |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 57 | 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] | 58 | if(error) { |
| 59 | LOGE("Unable to initialize font %s", fullPath.string()); |
| 60 | return false; |
| 61 | } |
| 62 | |
| 63 | mFontName = name; |
| 64 | mFontSize = fontSize; |
| 65 | mDpi = dpi; |
| 66 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 67 | error = FT_Set_Char_Size(mFace, fontSize * 64, 0, dpi, 0); |
| 68 | if(error) { |
| 69 | LOGE("Unable to set font size on %s", fullPath.string()); |
| 70 | return false; |
| 71 | } |
| 72 | |
| 73 | mHasKerning = FT_HAS_KERNING(mFace); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 74 | |
| 75 | mInitialized = true; |
| 76 | return true; |
| 77 | } |
| 78 | |
| 79 | void Font::invalidateTextureCache() |
| 80 | { |
| 81 | for(uint32_t i = 0; i < mCachedGlyphs.size(); i ++) { |
| 82 | mCachedGlyphs.valueAt(i)->mIsValid = false; |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | void Font::drawCachedGlyph(CachedGlyphInfo *glyph, int x, int y) |
| 87 | { |
| 88 | FontState *state = &mRSC->mStateFont; |
| 89 | |
| 90 | int nPenX = x + glyph->mBitmapLeft; |
| 91 | int nPenY = y - glyph->mBitmapTop + glyph->mBitmapHeight; |
| 92 | |
| 93 | state->appendMeshQuad(nPenX, nPenY, 0, |
| 94 | glyph->mBitmapMinU, glyph->mBitmapMaxV, |
| 95 | |
| 96 | nPenX + (int)glyph->mBitmapWidth, nPenY, 0, |
| 97 | glyph->mBitmapMaxU, glyph->mBitmapMaxV, |
| 98 | |
| 99 | nPenX + (int)glyph->mBitmapWidth, nPenY - (int)glyph->mBitmapHeight, 0, |
| 100 | glyph->mBitmapMaxU, glyph->mBitmapMinV, |
| 101 | |
| 102 | nPenX, nPenY - (int)glyph->mBitmapHeight, 0, |
| 103 | glyph->mBitmapMinU, glyph->mBitmapMinV); |
| 104 | } |
| 105 | |
| 106 | void Font::renderUTF(const char *text, uint32_t len, uint32_t start, int numGlyphs, int x, int y) |
| 107 | { |
| 108 | if(!mInitialized || numGlyphs == 0 || text == NULL || len == 0) { |
| 109 | return; |
| 110 | } |
| 111 | |
| 112 | int penX = x, penY = y; |
| 113 | int glyphsLeft = 1; |
| 114 | if(numGlyphs > 0) { |
| 115 | glyphsLeft = numGlyphs; |
| 116 | } |
| 117 | |
| 118 | size_t index = start; |
| 119 | size_t nextIndex = 0; |
| 120 | |
| 121 | while (glyphsLeft > 0) { |
| 122 | |
| 123 | int32_t utfChar = utf32_at(text, len, index, &nextIndex); |
| 124 | |
| 125 | // Reached the end of the string or encountered |
| 126 | if(utfChar < 0) { |
| 127 | break; |
| 128 | } |
| 129 | |
| 130 | // Move to the next character in the array |
| 131 | index = nextIndex; |
| 132 | |
Alex Sakhartchouk | 01bcef6 | 2010-08-17 11:09:49 -0700 | [diff] [blame] | 133 | CachedGlyphInfo *cachedGlyph = getCachedUTFChar(utfChar); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 134 | |
| 135 | // If it's still not valid, we couldn't cache it, so we shouldn't draw garbage |
| 136 | if(cachedGlyph->mIsValid) { |
| 137 | drawCachedGlyph(cachedGlyph, penX, penY); |
| 138 | } |
| 139 | |
| 140 | penX += (cachedGlyph->mAdvance.x >> 6); |
| 141 | |
| 142 | // If we were given a specific number of glyphs, decrement |
| 143 | if(numGlyphs > 0) { |
| 144 | glyphsLeft --; |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | |
Alex Sakhartchouk | 01bcef6 | 2010-08-17 11:09:49 -0700 | [diff] [blame] | 149 | Font::CachedGlyphInfo* Font::getCachedUTFChar(int32_t utfChar) { |
| 150 | |
| 151 | CachedGlyphInfo *cachedGlyph = mCachedGlyphs.valueFor((uint32_t)utfChar); |
| 152 | if(cachedGlyph == NULL) { |
| 153 | cachedGlyph = cacheGlyph((uint32_t)utfChar); |
| 154 | } |
| 155 | // Is the glyph still in texture cache? |
| 156 | if(!cachedGlyph->mIsValid) { |
| 157 | updateGlyphCache(cachedGlyph); |
| 158 | } |
| 159 | |
| 160 | return cachedGlyph; |
| 161 | } |
| 162 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 163 | void Font::updateGlyphCache(CachedGlyphInfo *glyph) |
| 164 | { |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 165 | FT_Error error = FT_Load_Glyph( mFace, glyph->mGlyphIndex, FT_LOAD_RENDER ); |
| 166 | if(error) { |
| 167 | LOGE("Couldn't load glyph."); |
| 168 | return; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 169 | } |
| 170 | |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 171 | glyph->mAdvance = mFace->glyph->advance; |
| 172 | glyph->mBitmapLeft = mFace->glyph->bitmap_left; |
| 173 | glyph->mBitmapTop = mFace->glyph->bitmap_top; |
| 174 | |
| 175 | FT_Bitmap *bitmap = &mFace->glyph->bitmap; |
| 176 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 177 | // Now copy the bitmap into the cache texture |
| 178 | uint32_t startX = 0; |
| 179 | uint32_t startY = 0; |
| 180 | |
| 181 | // Let the font state figure out where to put the bitmap |
| 182 | FontState *state = &mRSC->mStateFont; |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 183 | glyph->mIsValid = state->cacheBitmap(bitmap, &startX, &startY); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 184 | |
| 185 | if(!glyph->mIsValid) { |
| 186 | return; |
| 187 | } |
| 188 | |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 189 | uint32_t endX = startX + bitmap->width; |
| 190 | uint32_t endY = startY + bitmap->rows; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 191 | |
| 192 | glyph->mBitmapMinX = startX; |
| 193 | glyph->mBitmapMinY = startY; |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 194 | glyph->mBitmapWidth = bitmap->width; |
| 195 | glyph->mBitmapHeight = bitmap->rows; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 196 | |
| 197 | uint32_t cacheWidth = state->getCacheTextureType()->getDimX(); |
| 198 | uint32_t cacheHeight = state->getCacheTextureType()->getDimY(); |
| 199 | |
| 200 | glyph->mBitmapMinU = (float)startX / (float)cacheWidth; |
| 201 | glyph->mBitmapMinV = (float)startY / (float)cacheHeight; |
| 202 | glyph->mBitmapMaxU = (float)endX / (float)cacheWidth; |
| 203 | glyph->mBitmapMaxV = (float)endY / (float)cacheHeight; |
| 204 | } |
| 205 | |
| 206 | Font::CachedGlyphInfo *Font::cacheGlyph(uint32_t glyph) |
| 207 | { |
| 208 | CachedGlyphInfo *newGlyph = new CachedGlyphInfo(); |
| 209 | mCachedGlyphs.add(glyph, newGlyph); |
| 210 | |
| 211 | newGlyph->mGlyphIndex = FT_Get_Char_Index(mFace, glyph); |
| 212 | newGlyph->mIsValid = false; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 213 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 214 | updateGlyphCache(newGlyph); |
| 215 | |
| 216 | return newGlyph; |
| 217 | } |
| 218 | |
| 219 | Font * Font::create(Context *rsc, const char *name, uint32_t fontSize, uint32_t dpi) |
| 220 | { |
Alex Sakhartchouk | 35b9644 | 2010-08-18 15:46:43 -0700 | [diff] [blame] | 221 | rsc->mStateFont.checkInit(); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 222 | Vector<Font*> &activeFonts = rsc->mStateFont.mActiveFonts; |
| 223 | |
| 224 | for(uint32_t i = 0; i < activeFonts.size(); i ++) { |
| 225 | Font *ithFont = activeFonts[i]; |
| 226 | if(ithFont->mFontName == name && ithFont->mFontSize == fontSize && ithFont->mDpi == dpi) { |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 227 | return ithFont; |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | Font *newFont = new Font(rsc); |
| 232 | bool isInitialized = newFont->init(name, fontSize, dpi); |
| 233 | if(isInitialized) { |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 234 | activeFonts.push(newFont); |
Alex Sakhartchouk | 01bcef6 | 2010-08-17 11:09:49 -0700 | [diff] [blame] | 235 | rsc->mStateFont.precacheLatin(newFont); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 236 | return newFont; |
| 237 | } |
| 238 | |
| 239 | delete newFont; |
| 240 | return NULL; |
| 241 | |
| 242 | } |
| 243 | |
| 244 | Font::~Font() |
| 245 | { |
| 246 | if(mFace) { |
| 247 | FT_Done_Face(mFace); |
| 248 | } |
| 249 | |
| 250 | for (uint32_t ct = 0; ct < mRSC->mStateFont.mActiveFonts.size(); ct++) { |
| 251 | if (mRSC->mStateFont.mActiveFonts[ct] == this) { |
| 252 | mRSC->mStateFont.mActiveFonts.removeAt(ct); |
| 253 | break; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | for(uint32_t i = 0; i < mCachedGlyphs.size(); i ++) { |
| 258 | CachedGlyphInfo *glyph = mCachedGlyphs.valueAt(i); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 259 | delete glyph; |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | FontState::FontState() |
| 264 | { |
| 265 | mInitialized = false; |
| 266 | mMaxNumberOfQuads = 1024; |
| 267 | mCurrentQuadIndex = 0; |
| 268 | mRSC = NULL; |
Alex Sakhartchouk | 3659d94 | 2010-06-30 16:53:43 -0700 | [diff] [blame] | 269 | mLibrary = NULL; |
Alex Sakhartchouk | ca5a454 | 2010-08-05 11:24:14 -0700 | [diff] [blame] | 270 | setFontColor(0.1f, 0.1f, 0.1f, 1.0f); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | FontState::~FontState() |
| 274 | { |
| 275 | for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 276 | delete mCacheLines[i]; |
| 277 | } |
| 278 | |
| 279 | rsAssert(!mActiveFonts.size()); |
| 280 | } |
| 281 | |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 282 | FT_Library FontState::getLib() |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 283 | { |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 284 | if(!mLibrary) { |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 285 | FT_Error error = FT_Init_FreeType(&mLibrary); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 286 | if(error) { |
| 287 | LOGE("Unable to initialize freetype"); |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 288 | return NULL; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 289 | } |
| 290 | } |
Alex Sakhartchouk | 3659d94 | 2010-06-30 16:53:43 -0700 | [diff] [blame] | 291 | |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 292 | return mLibrary; |
| 293 | } |
| 294 | |
| 295 | void FontState::init(Context *rsc) |
| 296 | { |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 297 | mRSC = rsc; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 298 | } |
| 299 | |
| 300 | void FontState::flushAllAndInvalidate() |
| 301 | { |
| 302 | if(mCurrentQuadIndex != 0) { |
| 303 | issueDrawCommand(); |
| 304 | mCurrentQuadIndex = 0; |
| 305 | } |
| 306 | for(uint32_t i = 0; i < mActiveFonts.size(); i ++) { |
| 307 | mActiveFonts[i]->invalidateTextureCache(); |
| 308 | } |
| 309 | for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 310 | mCacheLines[i]->mCurrentCol = 0; |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | bool FontState::cacheBitmap(FT_Bitmap *bitmap, uint32_t *retOriginX, uint32_t *retOriginY) |
| 315 | { |
| 316 | // If the glyph is too tall, don't cache it |
| 317 | if((uint32_t)bitmap->rows > mCacheLines[mCacheLines.size()-1]->mMaxHeight) { |
| 318 | LOGE("Font size to large to fit in cache. width, height = %i, %i", (int)bitmap->width, (int)bitmap->rows); |
| 319 | return false; |
| 320 | } |
| 321 | |
| 322 | // Now copy the bitmap into the cache texture |
| 323 | uint32_t startX = 0; |
| 324 | uint32_t startY = 0; |
| 325 | |
| 326 | bool bitmapFit = false; |
| 327 | for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 328 | bitmapFit = mCacheLines[i]->fitBitmap(bitmap, &startX, &startY); |
| 329 | if(bitmapFit) { |
| 330 | break; |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | // If the new glyph didn't fit, flush the state so far and invalidate everything |
| 335 | if(!bitmapFit) { |
| 336 | flushAllAndInvalidate(); |
| 337 | |
| 338 | // Try to fit it again |
| 339 | for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 340 | bitmapFit = mCacheLines[i]->fitBitmap(bitmap, &startX, &startY); |
| 341 | if(bitmapFit) { |
| 342 | break; |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | // if we still don't fit, something is wrong and we shouldn't draw |
| 347 | if(!bitmapFit) { |
| 348 | LOGE("Bitmap doesn't fit in cache. width, height = %i, %i", (int)bitmap->width, (int)bitmap->rows); |
| 349 | return false; |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | *retOriginX = startX; |
| 354 | *retOriginY = startY; |
| 355 | |
| 356 | uint32_t endX = startX + bitmap->width; |
| 357 | uint32_t endY = startY + bitmap->rows; |
| 358 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 359 | uint32_t cacheWidth = getCacheTextureType()->getDimX(); |
| 360 | |
| 361 | unsigned char *cacheBuffer = (unsigned char*)mTextTexture->getPtr(); |
| 362 | unsigned char *bitmapBuffer = bitmap->buffer; |
| 363 | |
| 364 | uint32_t cacheX = 0, bX = 0, cacheY = 0, bY = 0; |
| 365 | for(cacheX = startX, bX = 0; cacheX < endX; cacheX ++, bX ++) { |
| 366 | for(cacheY = startY, bY = 0; cacheY < endY; cacheY ++, bY ++) { |
| 367 | unsigned char tempCol = bitmapBuffer[bY * bitmap->width + bX]; |
| 368 | cacheBuffer[cacheY*cacheWidth + cacheX] = tempCol; |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | // This will dirty the texture and the shader so next time |
| 373 | // we draw it will upload the data |
| 374 | mTextTexture->deferedUploadToTexture(mRSC, false, 0); |
| 375 | mFontShaderF->bindTexture(0, mTextTexture.get()); |
| 376 | |
| 377 | // Some debug code |
| 378 | /*for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 379 | LOGE("Cache Line: H: %u Empty Space: %f", |
| 380 | mCacheLines[i]->mMaxHeight, |
| 381 | (1.0f - (float)mCacheLines[i]->mCurrentCol/(float)mCacheLines[i]->mMaxWidth)*100.0f); |
| 382 | |
| 383 | }*/ |
| 384 | |
| 385 | return true; |
| 386 | } |
| 387 | |
| 388 | void FontState::initRenderState() |
| 389 | { |
Jason Sams | 6445e52 | 2010-08-04 17:50:20 -0700 | [diff] [blame] | 390 | uint32_t tmp[] = { |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 391 | RS_TEX_ENV_MODE_REPLACE, 1, |
| 392 | RS_TEX_ENV_MODE_NONE, 0, |
Jason Sams | 6445e52 | 2010-08-04 17:50:20 -0700 | [diff] [blame] | 393 | 0, 0 |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 394 | }; |
Jason Sams | 6445e52 | 2010-08-04 17:50:20 -0700 | [diff] [blame] | 395 | ProgramFragment *pf = new ProgramFragment(mRSC, tmp, 6); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 396 | mFontShaderF.set(pf); |
| 397 | mFontShaderF->init(mRSC); |
| 398 | |
| 399 | Sampler *sampler = new Sampler(mRSC, RS_SAMPLER_NEAREST, RS_SAMPLER_NEAREST, |
| 400 | RS_SAMPLER_CLAMP, RS_SAMPLER_CLAMP, RS_SAMPLER_CLAMP); |
| 401 | mFontSampler.set(sampler); |
| 402 | mFontShaderF->bindSampler(0, sampler); |
| 403 | |
| 404 | ProgramStore *fontStore = new ProgramStore(mRSC); |
| 405 | mFontProgramStore.set(fontStore); |
| 406 | mFontProgramStore->setDepthFunc(RS_DEPTH_FUNC_ALWAYS); |
| 407 | mFontProgramStore->setBlendFunc(RS_BLEND_SRC_SRC_ALPHA, RS_BLEND_DST_ONE_MINUS_SRC_ALPHA); |
| 408 | mFontProgramStore->setDitherEnable(false); |
| 409 | mFontProgramStore->setDepthMask(false); |
| 410 | } |
| 411 | |
| 412 | void FontState::initTextTexture() |
| 413 | { |
| 414 | const Element *alphaElem = Element::create(mRSC, RS_TYPE_UNSIGNED_8, RS_KIND_PIXEL_A, true, 1); |
| 415 | |
| 416 | // We will allocate a texture to initially hold 32 character bitmaps |
| 417 | Type *texType = new Type(mRSC); |
| 418 | texType->setElement(alphaElem); |
| 419 | texType->setDimX(1024); |
| 420 | texType->setDimY(256); |
| 421 | texType->compute(); |
| 422 | |
| 423 | Allocation *cacheAlloc = new Allocation(mRSC, texType); |
| 424 | mTextTexture.set(cacheAlloc); |
| 425 | mTextTexture->deferedUploadToTexture(mRSC, false, 0); |
| 426 | |
| 427 | // Split up our cache texture into lines of certain widths |
| 428 | int nextLine = 0; |
| 429 | mCacheLines.push(new CacheTextureLine(16, texType->getDimX(), nextLine, 0)); |
| 430 | nextLine += mCacheLines.top()->mMaxHeight; |
| 431 | mCacheLines.push(new CacheTextureLine(24, texType->getDimX(), nextLine, 0)); |
| 432 | nextLine += mCacheLines.top()->mMaxHeight; |
Alex Sakhartchouk | 01bcef6 | 2010-08-17 11:09:49 -0700 | [diff] [blame] | 433 | mCacheLines.push(new CacheTextureLine(24, texType->getDimX(), nextLine, 0)); |
| 434 | nextLine += mCacheLines.top()->mMaxHeight; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 435 | mCacheLines.push(new CacheTextureLine(32, texType->getDimX(), nextLine, 0)); |
| 436 | nextLine += mCacheLines.top()->mMaxHeight; |
| 437 | mCacheLines.push(new CacheTextureLine(32, texType->getDimX(), nextLine, 0)); |
| 438 | nextLine += mCacheLines.top()->mMaxHeight; |
| 439 | mCacheLines.push(new CacheTextureLine(40, texType->getDimX(), nextLine, 0)); |
| 440 | nextLine += mCacheLines.top()->mMaxHeight; |
| 441 | mCacheLines.push(new CacheTextureLine(texType->getDimY() - nextLine, texType->getDimX(), nextLine, 0)); |
| 442 | } |
| 443 | |
| 444 | // Avoid having to reallocate memory and render quad by quad |
| 445 | void FontState::initVertexArrayBuffers() |
| 446 | { |
| 447 | // Now lets write index data |
| 448 | const Element *indexElem = Element::create(mRSC, RS_TYPE_UNSIGNED_16, RS_KIND_USER, false, 1); |
| 449 | Type *indexType = new Type(mRSC); |
| 450 | uint32_t numIndicies = mMaxNumberOfQuads * 6; |
| 451 | indexType->setDimX(numIndicies); |
| 452 | indexType->setElement(indexElem); |
| 453 | indexType->compute(); |
| 454 | |
| 455 | Allocation *indexAlloc = new Allocation(mRSC, indexType); |
| 456 | uint16_t *indexPtr = (uint16_t*)indexAlloc->getPtr(); |
| 457 | |
| 458 | // Four verts, two triangles , six indices per quad |
| 459 | for(uint32_t i = 0; i < mMaxNumberOfQuads; i ++) { |
| 460 | int i6 = i * 6; |
| 461 | int i4 = i * 4; |
| 462 | |
| 463 | indexPtr[i6 + 0] = i4 + 0; |
| 464 | indexPtr[i6 + 1] = i4 + 1; |
| 465 | indexPtr[i6 + 2] = i4 + 2; |
| 466 | |
| 467 | indexPtr[i6 + 3] = i4 + 0; |
| 468 | indexPtr[i6 + 4] = i4 + 2; |
| 469 | indexPtr[i6 + 5] = i4 + 3; |
| 470 | } |
| 471 | |
| 472 | indexAlloc->deferedUploadToBufferObject(mRSC); |
| 473 | mIndexBuffer.set(indexAlloc); |
| 474 | |
| 475 | const Element *posElem = Element::create(mRSC, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 3); |
| 476 | const Element *texElem = Element::create(mRSC, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 2); |
| 477 | |
| 478 | const Element *elemArray[2]; |
| 479 | elemArray[0] = posElem; |
| 480 | elemArray[1] = texElem; |
| 481 | |
| 482 | String8 posName("position"); |
| 483 | String8 texName("texture0"); |
| 484 | |
| 485 | const char *nameArray[2]; |
| 486 | nameArray[0] = posName.string(); |
| 487 | nameArray[1] = texName.string(); |
| 488 | size_t lengths[2]; |
| 489 | lengths[0] = posName.size(); |
| 490 | lengths[1] = texName.size(); |
| 491 | |
| 492 | const Element *vertexDataElem = Element::create(mRSC, 2, elemArray, nameArray, lengths); |
| 493 | |
| 494 | Type *vertexDataType = new Type(mRSC); |
| 495 | vertexDataType->setDimX(mMaxNumberOfQuads * 4); |
| 496 | vertexDataType->setElement(vertexDataElem); |
| 497 | vertexDataType->compute(); |
| 498 | |
| 499 | Allocation *vertexAlloc = new Allocation(mRSC, vertexDataType); |
| 500 | mTextMeshPtr = (float*)vertexAlloc->getPtr(); |
| 501 | |
| 502 | mVertexArray.set(vertexAlloc); |
| 503 | } |
| 504 | |
| 505 | // We don't want to allocate anything unless we actually draw text |
| 506 | void FontState::checkInit() |
| 507 | { |
| 508 | if(mInitialized) { |
| 509 | return; |
| 510 | } |
| 511 | |
| 512 | initTextTexture(); |
| 513 | initRenderState(); |
| 514 | |
| 515 | initVertexArrayBuffers(); |
| 516 | |
Alex Sakhartchouk | 35b9644 | 2010-08-18 15:46:43 -0700 | [diff] [blame] | 517 | // We store a string with letters in a rough frequency of occurrence |
| 518 | mLatinPrecache = String8(" eisarntolcdugpmhbyfvkwzxjq"); |
| 519 | mLatinPrecache += String8("EISARNTOLCDUGPMHBYFVKWZXJQ"); |
| 520 | mLatinPrecache += String8(",.?!()-+@;:`'"); |
| 521 | mLatinPrecache += String8("0123456789"); |
| 522 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 523 | mInitialized = true; |
| 524 | } |
| 525 | |
| 526 | void FontState::issueDrawCommand() { |
| 527 | |
| 528 | ObjectBaseRef<const ProgramVertex> tmpV(mRSC->getVertex()); |
| 529 | mRSC->setVertex(mRSC->getDefaultProgramVertex()); |
| 530 | |
Alex Sakhartchouk | d18c744 | 2010-07-12 15:50:32 -0700 | [diff] [blame] | 531 | ObjectBaseRef<const ProgramRaster> tmpR(mRSC->getRaster()); |
| 532 | mRSC->setRaster(mRSC->getDefaultProgramRaster()); |
| 533 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 534 | ObjectBaseRef<const ProgramFragment> tmpF(mRSC->getFragment()); |
| 535 | mRSC->setFragment(mFontShaderF.get()); |
| 536 | |
| 537 | ObjectBaseRef<const ProgramStore> tmpPS(mRSC->getFragmentStore()); |
| 538 | mRSC->setFragmentStore(mFontProgramStore.get()); |
| 539 | |
Alex Sakhartchouk | ca5a454 | 2010-08-05 11:24:14 -0700 | [diff] [blame] | 540 | if(mFontColorDirty) { |
| 541 | mFontShaderF->setConstantColor(mFontColor[0], mFontColor[1], mFontColor[2], mFontColor[3]); |
| 542 | mFontColorDirty = false; |
| 543 | } |
| 544 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 545 | if (!mRSC->setupCheck()) { |
| 546 | mRSC->setVertex((ProgramVertex *)tmpV.get()); |
Alex Sakhartchouk | d18c744 | 2010-07-12 15:50:32 -0700 | [diff] [blame] | 547 | mRSC->setRaster((ProgramRaster *)tmpR.get()); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 548 | mRSC->setFragment((ProgramFragment *)tmpF.get()); |
| 549 | mRSC->setFragmentStore((ProgramStore *)tmpPS.get()); |
| 550 | return; |
| 551 | } |
| 552 | |
| 553 | float *vtx = (float*)mVertexArray->getPtr(); |
| 554 | float *tex = vtx + 3; |
| 555 | |
| 556 | VertexArray va; |
| 557 | va.add(GL_FLOAT, 3, 20, false, (uint32_t)vtx, "position"); |
| 558 | va.add(GL_FLOAT, 2, 20, false, (uint32_t)tex, "texture0"); |
| 559 | va.setupGL2(mRSC, &mRSC->mStateVertexArray, &mRSC->mShaderCache); |
| 560 | |
| 561 | mIndexBuffer->uploadCheck(mRSC); |
| 562 | glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mIndexBuffer->getBufferObjectID()); |
| 563 | glDrawElements(GL_TRIANGLES, mCurrentQuadIndex * 6, GL_UNSIGNED_SHORT, (uint16_t *)(0)); |
| 564 | |
| 565 | // Reset the state |
| 566 | mRSC->setVertex((ProgramVertex *)tmpV.get()); |
Alex Sakhartchouk | d18c744 | 2010-07-12 15:50:32 -0700 | [diff] [blame] | 567 | mRSC->setRaster((ProgramRaster *)tmpR.get()); |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 568 | mRSC->setFragment((ProgramFragment *)tmpF.get()); |
| 569 | mRSC->setFragmentStore((ProgramStore *)tmpPS.get()); |
| 570 | } |
| 571 | |
| 572 | void FontState::appendMeshQuad(float x1, float y1, float z1, |
| 573 | float u1, float v1, |
| 574 | float x2, float y2, float z2, |
| 575 | float u2, float v2, |
| 576 | float x3, float y3, float z3, |
| 577 | float u3, float v3, |
| 578 | float x4, float y4, float z4, |
| 579 | float u4, float v4) |
| 580 | { |
| 581 | const uint32_t vertsPerQuad = 4; |
| 582 | const uint32_t floatsPerVert = 5; |
| 583 | float *currentPos = mTextMeshPtr + mCurrentQuadIndex * vertsPerQuad * floatsPerVert; |
| 584 | |
| 585 | // Cull things that are off the screen |
| 586 | float width = (float)mRSC->getWidth(); |
| 587 | float height = (float)mRSC->getHeight(); |
| 588 | |
| 589 | if(x1 > width || y1 < 0.0f || x2 < 0 || y4 > height) { |
| 590 | return; |
| 591 | } |
| 592 | |
| 593 | /*LOGE("V0 x: %f y: %f z: %f", x1, y1, z1); |
| 594 | LOGE("V1 x: %f y: %f z: %f", x2, y2, z2); |
| 595 | LOGE("V2 x: %f y: %f z: %f", x3, y3, z3); |
| 596 | LOGE("V3 x: %f y: %f z: %f", x4, y4, z4);*/ |
| 597 | |
| 598 | (*currentPos++) = x1; |
| 599 | (*currentPos++) = y1; |
| 600 | (*currentPos++) = z1; |
| 601 | (*currentPos++) = u1; |
| 602 | (*currentPos++) = v1; |
| 603 | |
| 604 | (*currentPos++) = x2; |
| 605 | (*currentPos++) = y2; |
| 606 | (*currentPos++) = z2; |
| 607 | (*currentPos++) = u2; |
| 608 | (*currentPos++) = v2; |
| 609 | |
| 610 | (*currentPos++) = x3; |
| 611 | (*currentPos++) = y3; |
| 612 | (*currentPos++) = z3; |
| 613 | (*currentPos++) = u3; |
| 614 | (*currentPos++) = v3; |
| 615 | |
| 616 | (*currentPos++) = x4; |
| 617 | (*currentPos++) = y4; |
| 618 | (*currentPos++) = z4; |
| 619 | (*currentPos++) = u4; |
| 620 | (*currentPos++) = v4; |
| 621 | |
| 622 | mCurrentQuadIndex ++; |
| 623 | |
| 624 | if(mCurrentQuadIndex == mMaxNumberOfQuads) { |
| 625 | issueDrawCommand(); |
| 626 | mCurrentQuadIndex = 0; |
| 627 | } |
| 628 | } |
| 629 | |
Alex Sakhartchouk | 01bcef6 | 2010-08-17 11:09:49 -0700 | [diff] [blame] | 630 | uint32_t FontState::getRemainingCacheCapacity() { |
| 631 | uint32_t remainingCapacity = 0; |
Alex Sakhartchouk | 35b9644 | 2010-08-18 15:46:43 -0700 | [diff] [blame] | 632 | uint32_t totalPixels = 0; |
Alex Sakhartchouk | 01bcef6 | 2010-08-17 11:09:49 -0700 | [diff] [blame] | 633 | for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 634 | remainingCapacity += (mCacheLines[i]->mMaxWidth - mCacheLines[i]->mCurrentCol); |
| 635 | totalPixels += mCacheLines[i]->mMaxWidth; |
| 636 | } |
| 637 | remainingCapacity = (remainingCapacity * 100) / totalPixels; |
| 638 | return remainingCapacity; |
| 639 | } |
| 640 | |
| 641 | void FontState::precacheLatin(Font *font) { |
| 642 | // Remaining capacity is measured in % |
| 643 | uint32_t remainingCapacity = getRemainingCacheCapacity(); |
| 644 | uint32_t precacheIdx = 0; |
| 645 | while(remainingCapacity > 25 && precacheIdx < mLatinPrecache.size()) { |
| 646 | font->getCachedUTFChar((int32_t)mLatinPrecache[precacheIdx]); |
| 647 | remainingCapacity = getRemainingCacheCapacity(); |
| 648 | precacheIdx ++; |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 653 | void FontState::renderText(const char *text, uint32_t len, uint32_t startIndex, int numGlyphs, int x, int y) |
| 654 | { |
| 655 | checkInit(); |
| 656 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 657 | // Render code here |
| 658 | Font *currentFont = mRSC->getFont(); |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 659 | if(!currentFont) { |
| 660 | if(!mDefault.get()) { |
| 661 | mDefault.set(Font::create(mRSC, "DroidSans.ttf", 16, 96)); |
| 662 | } |
| 663 | currentFont = mDefault.get(); |
| 664 | } |
Alex Sakhartchouk | 3659d94 | 2010-06-30 16:53:43 -0700 | [diff] [blame] | 665 | if(!currentFont) { |
| 666 | LOGE("Unable to initialize any fonts"); |
| 667 | return; |
| 668 | } |
| 669 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 670 | currentFont->renderUTF(text, len, startIndex, numGlyphs, x, y); |
| 671 | |
| 672 | if(mCurrentQuadIndex != 0) { |
| 673 | issueDrawCommand(); |
| 674 | mCurrentQuadIndex = 0; |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | void FontState::renderText(const char *text, int x, int y) |
| 679 | { |
| 680 | size_t textLen = strlen(text); |
| 681 | renderText(text, textLen, 0, -1, x, y); |
| 682 | } |
| 683 | |
| 684 | void FontState::renderText(Allocation *alloc, int x, int y) |
| 685 | { |
| 686 | if(!alloc) { |
| 687 | return; |
| 688 | } |
| 689 | |
| 690 | const char *text = (const char *)alloc->getPtr(); |
| 691 | size_t allocSize = alloc->getType()->getSizeBytes(); |
| 692 | renderText(text, allocSize, 0, -1, x, y); |
| 693 | } |
| 694 | |
| 695 | void FontState::renderText(Allocation *alloc, uint32_t start, int len, int x, int y) |
| 696 | { |
| 697 | if(!alloc) { |
| 698 | return; |
| 699 | } |
| 700 | |
| 701 | const char *text = (const char *)alloc->getPtr(); |
| 702 | size_t allocSize = alloc->getType()->getSizeBytes(); |
| 703 | renderText(text, allocSize, start, len, x, y); |
| 704 | } |
| 705 | |
Alex Sakhartchouk | 9fc9f03 | 2010-08-04 14:45:48 -0700 | [diff] [blame] | 706 | void FontState::setFontColor(float r, float g, float b, float a) { |
| 707 | mFontColor[0] = r; |
| 708 | mFontColor[1] = g; |
| 709 | mFontColor[2] = b; |
| 710 | mFontColor[3] = a; |
| 711 | mFontColorDirty = true; |
| 712 | } |
| 713 | |
Alex Sakhartchouk | ca5a454 | 2010-08-05 11:24:14 -0700 | [diff] [blame] | 714 | void FontState::getFontColor(float *r, float *g, float *b, float *a) const { |
| 715 | *r = mFontColor[0]; |
| 716 | *g = mFontColor[1]; |
| 717 | *b = mFontColor[2]; |
| 718 | *a = mFontColor[3]; |
| 719 | } |
| 720 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 721 | void FontState::deinit(Context *rsc) |
| 722 | { |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 723 | mInitialized = false; |
| 724 | |
| 725 | mIndexBuffer.clear(); |
| 726 | mVertexArray.clear(); |
| 727 | |
| 728 | mFontShaderF.clear(); |
| 729 | mFontSampler.clear(); |
| 730 | mFontProgramStore.clear(); |
| 731 | |
| 732 | mTextTexture.clear(); |
| 733 | for(uint32_t i = 0; i < mCacheLines.size(); i ++) { |
| 734 | delete mCacheLines[i]; |
| 735 | } |
| 736 | mCacheLines.clear(); |
| 737 | |
| 738 | mDefault.clear(); |
| 739 | |
Alex Sakhartchouk | 3659d94 | 2010-06-30 16:53:43 -0700 | [diff] [blame] | 740 | Vector<Font*> fontsToDereference = mActiveFonts; |
| 741 | for(uint32_t i = 0; i < fontsToDereference.size(); i ++) { |
| 742 | fontsToDereference[i]->zeroUserRef(); |
| 743 | } |
| 744 | |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 745 | if(mLibrary) { |
| 746 | FT_Done_FreeType( mLibrary ); |
Alex Sakhartchouk | 3659d94 | 2010-06-30 16:53:43 -0700 | [diff] [blame] | 747 | mLibrary = NULL; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 748 | } |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 749 | } |
| 750 | |
| 751 | namespace android { |
| 752 | namespace renderscript { |
| 753 | |
| 754 | RsFont rsi_FontCreateFromFile(Context *rsc, char const *name, uint32_t fontSize, uint32_t dpi) |
| 755 | { |
Alex Sakhartchouk | a1ccecd | 2010-06-30 12:49:27 -0700 | [diff] [blame] | 756 | Font *newFont = Font::create(rsc, name, fontSize, dpi); |
| 757 | if(newFont) { |
| 758 | newFont->incUserRef(); |
| 759 | } |
| 760 | return newFont; |
Alex Sakhartchouk | d3e0ad4 | 2010-06-24 17:15:34 -0700 | [diff] [blame] | 761 | } |
| 762 | |
| 763 | } // renderscript |
| 764 | } // android |