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| 1 #include "SkGLDevice.h" | |
| 2 #include "SkGL.h" | |
| 3 #include "SkDrawProcs.h" | |
| 4 #include "SkRegion.h" | |
| 5 #include "SkThread.h" | |
| 6 | |
| 7 static void TRACE_DRAW(const char func[], SkGLDevice* device, | |
| 8 const SkDraw& draw) { | |
| 9 // SkDebugf("--- <%s> %p %p\n", func, canvas, draw.fDevice); | |
| 10 } | |
| 11 | |
| 12 struct SkGLDrawProcs : public SkDrawProcs { | |
| 13 public: | |
| 14 void init(const SkRegion* clip, int height) { | |
| 15 fCurrQuad = 0; | |
| 16 fCurrTexture = 0; | |
| 17 fClip = clip; | |
| 18 fViewportHeight = height; | |
| 19 | |
| 20 glEnableClientState(GL_TEXTURE_COORD_ARRAY); | |
| 21 glTexCoordPointer(2, SK_TextGLType, 0, fTexs); | |
| 22 glDisableClientState(GL_COLOR_ARRAY); | |
| 23 glVertexPointer(2, SK_TextGLType, 0, fVerts); | |
| 24 } | |
| 25 | |
| 26 GLenum texture() const { return fCurrTexture; } | |
| 27 | |
| 28 void flush() { | |
| 29 if (fCurrQuad && fCurrTexture) { | |
| 30 this->drawQuads(); | |
| 31 } | |
| 32 fCurrQuad = 0; | |
| 33 } | |
| 34 | |
| 35 void addQuad(GLuint texture, int x, int y, const SkGlyph& glyph, | |
| 36 SkFixed left, SkFixed right, SkFixed bottom) { | |
| 37 SkASSERT((size_t)fCurrQuad <= SK_ARRAY_COUNT(fVerts)); | |
| 38 | |
| 39 if (fCurrTexture != texture || fCurrQuad == SK_ARRAY_COUNT(fVerts)) { | |
| 40 if (fCurrQuad && fCurrTexture) { | |
| 41 this->drawQuads(); | |
| 42 } | |
| 43 fCurrQuad = 0; | |
| 44 fCurrTexture = texture; | |
| 45 } | |
| 46 | |
| 47 fVerts[fCurrQuad].setIRectFan(x, y, | |
| 48 x + glyph.fWidth, y + glyph.fHeight); | |
| 49 fTexs[fCurrQuad].setXRectFan(left, 0, right, bottom); | |
| 50 fCurrQuad += 4; | |
| 51 } | |
| 52 | |
| 53 void drawQuads(); | |
| 54 | |
| 55 private: | |
| 56 enum { | |
| 57 MAX_QUADS = 32 | |
| 58 }; | |
| 59 | |
| 60 SkGLTextVertex fVerts[MAX_QUADS * 4]; | |
| 61 SkGLTextVertex fTexs[MAX_QUADS * 4]; | |
| 62 | |
| 63 // these are initialized in setupForText | |
| 64 GLuint fCurrTexture; | |
| 65 int fCurrQuad; | |
| 66 int fViewportHeight; | |
| 67 const SkRegion* fClip; | |
| 68 }; | |
| 69 | |
| 70 /////////////////////////////////////////////////////////////////////////////// | |
| 71 | |
| 72 SkGLDevice::SkGLDevice(const SkBitmap& bitmap, bool offscreen) | |
| 73 : SkDevice(bitmap), fClipIter(bitmap.height()) { | |
| 74 fDrawProcs = NULL; | |
| 75 } | |
| 76 | |
| 77 SkGLDevice::~SkGLDevice() { | |
| 78 if (fDrawProcs) { | |
| 79 SkDELETE(fDrawProcs); | |
| 80 } | |
| 81 } | |
| 82 | |
| 83 void SkGLDevice::setMatrixClip(const SkMatrix& matrix, const SkRegion& clip) { | |
| 84 this->INHERITED::setMatrixClip(matrix, clip); | |
| 85 | |
| 86 fGLMatrix.set(matrix); | |
| 87 fMatrix = matrix; | |
| 88 fClip = clip; | |
| 89 fDirty = true; | |
| 90 } | |
| 91 | |
| 92 SkGLDevice::TexOrientation SkGLDevice::bindDeviceAsTexture() { | |
| 93 return kNo_TexOrientation; | |
| 94 } | |
| 95 | |
| 96 void SkGLDevice::gainFocus(SkCanvas* canvas) { | |
| 97 this->INHERITED::gainFocus(canvas); | |
| 98 | |
| 99 const int w = this->width(); | |
| 100 const int h = this->height(); | |
| 101 glViewport(0, 0, w, h); | |
| 102 glMatrixMode(GL_PROJECTION); | |
| 103 glLoadIdentity(); | |
| 104 SkGL::Ortho(0, w, h, 0, -1, 1); | |
| 105 glMatrixMode(GL_MODELVIEW); | |
| 106 fDirty = true; | |
| 107 } | |
| 108 | |
| 109 SkGLClipIter* SkGLDevice::updateMatrixClip() { | |
| 110 bool useIter = false; | |
| 111 | |
| 112 // first handle the clip | |
| 113 if (fDirty || !fClip.isRect()) { | |
| 114 fClipIter.reset(fClip); | |
| 115 useIter = true; | |
| 116 } else if (fDirty) { | |
| 117 // no iter means caller is not respecting complex clips :( | |
| 118 SkGL::Scissor(fClip.getBounds(), this->height()); | |
| 119 } | |
| 120 // else we're just a rect, and we've already call scissor | |
| 121 | |
| 122 // now handle the matrix | |
| 123 if (fDirty) { | |
| 124 MAKE_GL(glLoadMatrix)(fGLMatrix.fMat); | |
| 125 #if 0 | |
| 126 SkDebugf("--- gldevice update matrix %p %p\n", this, fFBO); | |
| 127 for (int y = 0; y < 4; y++) { | |
| 128 SkDebugf(" [ "); | |
| 129 for (int x = 0; x < 4; x++) { | |
| 130 SkDebugf("%g ", fGLMatrix.fMat[y*4 + x]); | |
| 131 } | |
| 132 SkDebugf("]\n"); | |
| 133 } | |
| 134 #endif | |
| 135 fDirty = false; | |
| 136 } | |
| 137 | |
| 138 return useIter ? &fClipIter : NULL; | |
| 139 } | |
| 140 | |
| 141 /////////////////////////////////////////////////////////////////////////////// | |
| 142 | |
| 143 // must be in the same order as SkXfermode::Coeff in SkXfermode.h | |
| 144 SkGLDevice::AutoPaintShader::AutoPaintShader(SkGLDevice* device, | |
| 145 const SkPaint& paint) { | |
| 146 fDevice = device; | |
| 147 fTexCache = device->setupGLPaintShader(paint); | |
| 148 } | |
| 149 | |
| 150 SkGLDevice::AutoPaintShader::~AutoPaintShader() { | |
| 151 if (fTexCache) { | |
| 152 SkGLDevice::UnlockTexCache(fTexCache); | |
| 153 } | |
| 154 } | |
| 155 | |
| 156 SkGLDevice::TexCache* SkGLDevice::setupGLPaintShader(const SkPaint& paint) { | |
| 157 SkGL::SetPaint(paint); | |
| 158 | |
| 159 SkShader* shader = paint.getShader(); | |
| 160 if (NULL == shader) { | |
| 161 return NULL; | |
| 162 } | |
| 163 | |
| 164 if (!shader->setContext(this->accessBitmap(false), paint, this->matrix())) { | |
| 165 return NULL; | |
| 166 } | |
| 167 | |
| 168 SkBitmap bitmap; | |
| 169 SkMatrix matrix; | |
| 170 SkShader::TileMode tileModes[2]; | |
| 171 if (!shader->asABitmap(&bitmap, &matrix, tileModes)) { | |
| 172 return NULL; | |
| 173 } | |
| 174 | |
| 175 bitmap.lockPixels(); | |
| 176 if (!bitmap.readyToDraw()) { | |
| 177 return NULL; | |
| 178 } | |
| 179 | |
| 180 // see if we've already cached the bitmap from the shader | |
| 181 SkPoint max; | |
| 182 GLuint name; | |
| 183 TexCache* cache = SkGLDevice::LockTexCache(bitmap, &name, &max); | |
| 184 // the lock has already called glBindTexture for us | |
| 185 SkGL::SetTexParams(paint.isFilterBitmap(), tileModes[0], tileModes[1]); | |
| 186 | |
| 187 // since our texture coords will be in local space, we wack the texture | |
| 188 // matrix to map them back into 0...1 before we load it | |
| 189 SkMatrix localM; | |
| 190 if (shader->getLocalMatrix(&localM)) { | |
| 191 SkMatrix inverse; | |
| 192 if (localM.invert(&inverse)) { | |
| 193 matrix.preConcat(inverse); | |
| 194 } | |
| 195 } | |
| 196 | |
| 197 matrix.postScale(max.fX / bitmap.width(), max.fY / bitmap.height()); | |
| 198 glMatrixMode(GL_TEXTURE); | |
| 199 SkGL::LoadMatrix(matrix); | |
| 200 glMatrixMode(GL_MODELVIEW); | |
| 201 | |
| 202 // since we're going to use a shader/texture, we don't want the color, | |
| 203 // just its alpha | |
| 204 SkGL::SetAlpha(paint.getAlpha()); | |
| 205 // report that we have setup the texture | |
| 206 return cache; | |
| 207 } | |
| 208 | |
| 209 /////////////////////////////////////////////////////////////////////////////// | |
| 210 /////////////////////////////////////////////////////////////////////////////// | |
| 211 | |
| 212 void SkGLDevice::drawPaint(const SkDraw& draw, const SkPaint& paint) { | |
| 213 TRACE_DRAW("coreDrawPaint", this, draw); | |
| 214 | |
| 215 AutoPaintShader shader(this, paint); | |
| 216 SkGLVertex vertex[4]; | |
| 217 const SkGLVertex* texs = shader.useTex() ? vertex : NULL; | |
| 218 | |
| 219 // set vert to be big enough to fill the space, but not super-huge, to we | |
| 220 // don't overflow fixed-point implementations | |
| 221 { | |
| 222 SkRect r; | |
| 223 r.set(this->clip().getBounds()); | |
| 224 SkMatrix inverse; | |
| 225 if (draw.fMatrix->invert(&inverse)) { | |
| 226 inverse.mapRect(&r); | |
| 227 } | |
| 228 vertex->setRectFan(r); | |
| 229 } | |
| 230 | |
| 231 SkGL::DrawVertices(4, GL_TRIANGLE_FAN, vertex, texs, NULL, NULL, | |
| 232 this->updateMatrixClip()); | |
| 233 } | |
| 234 | |
| 235 static const GLenum gPointMode2GL[] = { | |
| 236 GL_POINTS, | |
| 237 GL_LINES, | |
| 238 GL_LINE_STRIP | |
| 239 }; | |
| 240 | |
| 241 void SkGLDevice::drawPoints(const SkDraw& draw, SkCanvas::PointMode mode, | |
| 242 size_t count, const SkPoint pts[], const SkPaint& pa
int) { | |
| 243 TRACE_DRAW("coreDrawPoints", this, draw); | |
| 244 | |
| 245 SkScalar width = paint.getStrokeWidth(); | |
| 246 if (width < 0) { | |
| 247 return; | |
| 248 } | |
| 249 | |
| 250 /* We should really only use drawverts for hairlines, since gl and skia | |
| 251 treat the thickness differently... | |
| 252 */ | |
| 253 | |
| 254 AutoPaintShader shader(this, paint); | |
| 255 | |
| 256 if (width <= 0) { | |
| 257 width = SK_Scalar1; | |
| 258 } | |
| 259 | |
| 260 if (SkCanvas::kPoints_PointMode == mode) { | |
| 261 glPointSize(SkScalarToFloat(width)); | |
| 262 } else { | |
| 263 glLineWidth(SkScalarToFloat(width)); | |
| 264 } | |
| 265 | |
| 266 const SkGLVertex* verts; | |
| 267 | |
| 268 #if GLSCALAR_IS_SCALAR | |
| 269 verts = (const SkGLVertex*)pts; | |
| 270 #else | |
| 271 SkAutoSTMalloc<32, SkGLVertex> storage(count); | |
| 272 SkGLVertex* v = storage.get(); | |
| 273 | |
| 274 v->setPoints(pts, count); | |
| 275 verts = v; | |
| 276 #endif | |
| 277 | |
| 278 const SkGLVertex* texs = shader.useTex() ? verts : NULL; | |
| 279 | |
| 280 SkGL::DrawVertices(count, gPointMode2GL[mode], verts, texs, NULL, NULL, | |
| 281 this->updateMatrixClip()); | |
| 282 } | |
| 283 | |
| 284 void SkGLDevice::drawRect(const SkDraw& draw, const SkRect& rect, | |
| 285 const SkPaint& paint) { | |
| 286 TRACE_DRAW("coreDrawRect", this, draw); | |
| 287 | |
| 288 if (paint.getStyle() == SkPaint::kStroke_Style) { | |
| 289 return; | |
| 290 } | |
| 291 | |
| 292 if (paint.getStrokeJoin() != SkPaint::kMiter_Join) { | |
| 293 SkPath path; | |
| 294 path.addRect(rect); | |
| 295 this->drawPath(draw, path, paint); | |
| 296 return; | |
| 297 } | |
| 298 | |
| 299 AutoPaintShader shader(this, paint); | |
| 300 | |
| 301 SkGLVertex vertex[4]; | |
| 302 vertex->setRectFan(rect); | |
| 303 const SkGLVertex* texs = shader.useTex() ? vertex : NULL; | |
| 304 | |
| 305 SkGL::DrawVertices(4, GL_TRIANGLE_FAN, vertex, texs, NULL, NULL, | |
| 306 this->updateMatrixClip()); | |
| 307 } | |
| 308 | |
| 309 void SkGLDevice::drawPath(const SkDraw& draw, const SkPath& path, | |
| 310 const SkPaint& paint) { | |
| 311 TRACE_DRAW("coreDrawPath", this, draw); | |
| 312 if (paint.getStyle() == SkPaint::kStroke_Style) { | |
| 313 return; | |
| 314 } | |
| 315 | |
| 316 AutoPaintShader shader(this, paint); | |
| 317 | |
| 318 SkGL::FillPath(path, paint, shader.useTex(), this->updateMatrixClip()); | |
| 319 } | |
| 320 | |
| 321 void SkGLDevice::drawBitmap(const SkDraw& draw, const SkBitmap& bitmap, | |
| 322 const SkMatrix& m, const SkPaint& paint) { | |
| 323 TRACE_DRAW("coreDrawBitmap", this, draw); | |
| 324 | |
| 325 SkAutoLockPixels alp(bitmap); | |
| 326 if (!bitmap.readyToDraw()) { | |
| 327 return; | |
| 328 } | |
| 329 | |
| 330 SkGLClipIter* iter = this->updateMatrixClip(); | |
| 331 | |
| 332 SkPoint max; | |
| 333 GLenum name; | |
| 334 SkAutoLockTexCache(bitmap, &name, &max); | |
| 335 // the lock has already called glBindTexture for us | |
| 336 SkGL::SetTexParamsClamp(paint.isFilterBitmap()); | |
| 337 | |
| 338 glMatrixMode(GL_TEXTURE); | |
| 339 glLoadIdentity(); | |
| 340 glMatrixMode(GL_MODELVIEW); | |
| 341 glPushMatrix(); | |
| 342 SkGL::MultMatrix(m); | |
| 343 | |
| 344 SkGLVertex pts[4], tex[4]; | |
| 345 | |
| 346 pts->setIRectFan(0, 0, bitmap.width(), bitmap.height()); | |
| 347 tex->setRectFan(0, 0, max.fX, max.fY); | |
| 348 | |
| 349 // now draw the mesh | |
| 350 SkGL::SetPaintAlpha(paint); | |
| 351 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); | |
| 352 | |
| 353 SkGL::DrawVertices(4, GL_TRIANGLE_FAN, pts, tex, NULL, NULL, iter); | |
| 354 | |
| 355 glPopMatrix(); | |
| 356 } | |
| 357 | |
| 358 // move this guy into SkGL, so we can call it from SkGLDevice | |
| 359 static void gl_drawSprite(int x, int y, int w, int h, const SkPoint& max, | |
| 360 const SkPaint& paint, SkGLClipIter* iter) { | |
| 361 SkGL::SetTexParamsClamp(false); | |
| 362 | |
| 363 glMatrixMode(GL_TEXTURE); | |
| 364 glLoadIdentity(); | |
| 365 glMatrixMode(GL_MODELVIEW); | |
| 366 glPushMatrix(); | |
| 367 glLoadIdentity(); | |
| 368 | |
| 369 SkGLVertex pts[4], tex[4]; | |
| 370 | |
| 371 // if h < 0, then the texture is bottom-to-top, but since our projection | |
| 372 // matrix always inverts Y, we have to re-invert our texture coord here | |
| 373 if (h < 0) { | |
| 374 h = -h; | |
| 375 tex->setRectFan(0, max.fY, max.fX, 0); | |
| 376 } else { | |
| 377 tex->setRectFan(0, 0, max.fX, max.fY); | |
| 378 } | |
| 379 pts->setIRectFan(x, y, x + w, y + h); | |
| 380 | |
| 381 SkGL::SetPaintAlpha(paint); | |
| 382 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); | |
| 383 | |
| 384 // should look to use glDrawTexi() has we do for text... | |
| 385 SkGL::DrawVertices(4, GL_TRIANGLE_FAN, pts, tex, NULL, NULL, iter); | |
| 386 | |
| 387 glPopMatrix(); | |
| 388 } | |
| 389 | |
| 390 void SkGLDevice::drawSprite(const SkDraw& draw, const SkBitmap& bitmap, | |
| 391 int left, int top, const SkPaint& paint) { | |
| 392 TRACE_DRAW("coreDrawSprite", this, draw); | |
| 393 | |
| 394 SkAutoLockPixels alp(bitmap); | |
| 395 if (!bitmap.readyToDraw()) { | |
| 396 return; | |
| 397 } | |
| 398 | |
| 399 SkGLClipIter* iter = this->updateMatrixClip(); | |
| 400 | |
| 401 SkPoint max; | |
| 402 GLuint name; | |
| 403 SkAutoLockTexCache(bitmap, &name, &max); | |
| 404 | |
| 405 gl_drawSprite(left, top, bitmap.width(), bitmap.height(), max, paint, iter); | |
| 406 } | |
| 407 | |
| 408 void SkGLDevice::drawDevice(const SkDraw& draw, SkDevice* dev, | |
| 409 int x, int y, const SkPaint& paint) { | |
| 410 TRACE_DRAW("coreDrawDevice", this, draw); | |
| 411 | |
| 412 SkGLDevice::TexOrientation to = ((SkGLDevice*)dev)->bindDeviceAsTexture(); | |
| 413 if (SkGLDevice::kNo_TexOrientation != to) { | |
| 414 SkGLClipIter* iter = this->updateMatrixClip(); | |
| 415 | |
| 416 const SkBitmap& bm = dev->accessBitmap(false); | |
| 417 int w = bm.width(); | |
| 418 int h = bm.height(); | |
| 419 SkPoint max; | |
| 420 | |
| 421 max.set(SkFixedToScalar(w << (16 - SkNextLog2(bm.rowBytesAsPixels()))), | |
| 422 SkFixedToScalar(h << (16 - SkNextLog2(h)))); | |
| 423 | |
| 424 if (SkGLDevice::kBottomToTop_TexOrientation == to) { | |
| 425 h = -h; | |
| 426 } | |
| 427 gl_drawSprite(x, y, w, h, max, paint, iter); | |
| 428 } | |
| 429 } | |
| 430 | |
| 431 /////////////////////////////////////////////////////////////////////////////// | |
| 432 | |
| 433 static const GLenum gVertexModeToGL[] = { | |
| 434 GL_TRIANGLES, // kTriangles_VertexMode, | |
| 435 GL_TRIANGLE_STRIP, // kTriangleStrip_VertexMode, | |
| 436 GL_TRIANGLE_FAN // kTriangleFan_VertexMode | |
| 437 }; | |
| 438 | |
| 439 #include "SkShader.h" | |
| 440 | |
| 441 void SkGLDevice::drawVertices(const SkDraw& draw, SkCanvas::VertexMode vmode, | |
| 442 int vertexCount, const SkPoint vertices[], | |
| 443 const SkPoint texs[], const SkColor colors[], | |
| 444 SkXfermode* xmode, | |
| 445 const uint16_t indices[], int indexCount, | |
| 446 const SkPaint& paint) { | |
| 447 | |
| 448 if (false) { | |
| 449 SkRect bounds; | |
| 450 SkIRect ibounds; | |
| 451 | |
| 452 bounds.set(vertices, vertexCount); | |
| 453 bounds.round(&ibounds); | |
| 454 | |
| 455 SkDebugf("---- drawverts: %d pts, texs=%d colors=%d indices=%d bounds [%
d %d]\n", | |
| 456 vertexCount, texs!=0, colors!=0, indexCount, ibounds.width(), i
bounds.height()); | |
| 457 } | |
| 458 | |
| 459 SkGLClipIter* iter = this->updateMatrixClip(); | |
| 460 | |
| 461 SkGL::SetPaint(paint); | |
| 462 | |
| 463 const SkGLVertex* glVerts; | |
| 464 const SkGLVertex* glTexs = NULL; | |
| 465 | |
| 466 #if GLSCALAR_IS_SCALAR | |
| 467 glVerts = (const SkGLVertex*)vertices; | |
| 468 #else | |
| 469 SkAutoSTMalloc<32, SkGLVertex> storage(vertexCount); | |
| 470 storage.get()->setPoints(vertices, vertexCount); | |
| 471 glVerts = storage.get(); | |
| 472 #endif | |
| 473 | |
| 474 uint8_t* colorArray = NULL; | |
| 475 if (colors) { | |
| 476 colorArray = (uint8_t*)sk_malloc_throw(vertexCount*4); | |
| 477 SkGL::SetRGBA(colorArray, colors, vertexCount); | |
| 478 } | |
| 479 SkAutoFree afca(colorArray); | |
| 480 | |
| 481 SkGLVertex* texArray = NULL; | |
| 482 TexCache* cache = NULL; | |
| 483 | |
| 484 if (texs && paint.getShader()) { | |
| 485 SkShader* shader = paint.getShader(); | |
| 486 | |
| 487 // if (!shader->setContext(this->accessBitmap(), paint, *draw.fMa
trix)) { | |
| 488 if (!shader->setContext(*draw.fBitmap, paint, *draw.fMatrix)) { | |
| 489 goto DONE; | |
| 490 } | |
| 491 | |
| 492 SkBitmap bitmap; | |
| 493 SkMatrix matrix; | |
| 494 SkShader::TileMode tileModes[2]; | |
| 495 if (shader->asABitmap(&bitmap, &matrix, tileModes)) { | |
| 496 SkPoint max; | |
| 497 GLuint name; | |
| 498 cache = SkGLDevice::LockTexCache(bitmap, &name, &max); | |
| 499 if (NULL == cache) { | |
| 500 return; | |
| 501 } | |
| 502 | |
| 503 matrix.postScale(max.fX / bitmap.width(), max.fY / bitmap.height()); | |
| 504 glMatrixMode(GL_TEXTURE); | |
| 505 SkGL::LoadMatrix(matrix); | |
| 506 glMatrixMode(GL_MODELVIEW); | |
| 507 | |
| 508 #if GLSCALAR_IS_SCALAR | |
| 509 glTexs = (const SkGLVertex*)texs; | |
| 510 #else | |
| 511 texArray = (SkGLVertex*)sk_malloc_throw(vertexCount * sizeof(SkGLVer
tex)); | |
| 512 texArray->setPoints(texs, vertexCount); | |
| 513 glTexs = texArray; | |
| 514 #endif | |
| 515 | |
| 516 SkGL::SetPaintAlpha(paint); | |
| 517 SkGL::SetTexParams(paint.isFilterBitmap(), | |
| 518 tileModes[0], tileModes[1]); | |
| 519 } | |
| 520 } | |
| 521 DONE: | |
| 522 SkAutoFree aftex(texArray); | |
| 523 | |
| 524 SkGL::DrawVertices(indices ? indexCount : vertexCount, | |
| 525 gVertexModeToGL[vmode], | |
| 526 glVerts, glTexs, colorArray, indices, iter); | |
| 527 | |
| 528 if (cache) { | |
| 529 SkGLDevice::UnlockTexCache(cache); | |
| 530 } | |
| 531 } | |
| 532 | |
| 533 /////////////////////////////////////////////////////////////////////////////// | |
| 534 | |
| 535 #include "SkGlyphCache.h" | |
| 536 #include "SkGLTextCache.h" | |
| 537 | |
| 538 void SkGLDevice::GlyphCacheAuxProc(void* data) { | |
| 539 SkDebugf("-------------- delete text texture cache\n"); | |
| 540 SkDELETE((SkGLTextCache*)data); | |
| 541 } | |
| 542 | |
| 543 #ifdef SK_SCALAR_IS_FIXED | |
| 544 #define SkDiv16ToScalar(numer, denom) (SkIntToFixed(numer) / (denom)) | |
| 545 #else | |
| 546 #define SkDiv16ToScalar(numer, denom) SkScalarDiv(numer, denom) | |
| 547 #endif | |
| 548 | |
| 549 // stolen from SkDraw.cpp - D1G_NoBounder_RectClip | |
| 550 static void SkGL_Draw1Glyph(const SkDraw1Glyph& state, const SkGlyph& glyph, | |
| 551 int x, int y) { | |
| 552 SkASSERT(glyph.fWidth > 0 && glyph.fHeight > 0); | |
| 553 | |
| 554 SkGLDrawProcs* procs = (SkGLDrawProcs*)state.fDraw->fProcs; | |
| 555 | |
| 556 x += glyph.fLeft; | |
| 557 y += glyph.fTop; | |
| 558 | |
| 559 // check if we're clipped out (nothing to draw) | |
| 560 SkIRect bounds; | |
| 561 bounds.set(x, y, x + glyph.fWidth, y + glyph.fHeight); | |
| 562 if (!SkIRect::Intersects(state.fClip->getBounds(), bounds)) { | |
| 563 return; | |
| 564 } | |
| 565 | |
| 566 // now dig up our texture cache | |
| 567 | |
| 568 SkGlyphCache* gcache = state.fCache; | |
| 569 void* auxData; | |
| 570 SkGLTextCache* textCache = NULL; | |
| 571 | |
| 572 if (gcache->getAuxProcData(SkGLDevice::GlyphCacheAuxProc, &auxData)) { | |
| 573 textCache = (SkGLTextCache*)auxData; | |
| 574 } | |
| 575 if (NULL == textCache) { | |
| 576 // need to create one | |
| 577 textCache = SkNEW(SkGLTextCache); | |
| 578 gcache->setAuxProc(SkGLDevice::GlyphCacheAuxProc, textCache); | |
| 579 } | |
| 580 | |
| 581 int offset; | |
| 582 SkGLTextCache::Strike* strike = textCache->findGlyph(glyph, &offset); | |
| 583 if (NULL == strike) { | |
| 584 // make sure the glyph has an image | |
| 585 uint8_t* aa = (uint8_t*)glyph.fImage; | |
| 586 if (NULL == aa) { | |
| 587 aa = (uint8_t*)gcache->findImage(glyph); | |
| 588 if (NULL == aa) { | |
| 589 return; // can't rasterize glyph | |
| 590 } | |
| 591 } | |
| 592 strike = textCache->addGlyphAndBind(glyph, aa, &offset); | |
| 593 if (NULL == strike) { | |
| 594 // too big to cache, need to draw as is... | |
| 595 return; | |
| 596 } | |
| 597 } | |
| 598 | |
| 599 const int shiftW = strike->widthShift(); | |
| 600 const int shiftH = strike->heightShift(); | |
| 601 | |
| 602 SkFixed left = offset << (16 - shiftW); | |
| 603 SkFixed right = (offset + glyph.fWidth) << (16 - shiftW); | |
| 604 SkFixed bottom = glyph.fHeight << (16 - shiftH); | |
| 605 | |
| 606 procs->addQuad(strike->texture(), x, y, glyph, left, right, bottom); | |
| 607 } | |
| 608 | |
| 609 #if 1 | |
| 610 // matches the orientation used in SkGL::setRectFan. Too bad we can't rely on | |
| 611 // QUADS in android's GL | |
| 612 static const uint8_t gQuadIndices[] = { | |
| 613 0, 1, 2, 0, 2, 3, | |
| 614 4, 5, 6, 4, 6, 7, | |
| 615 8, 9, 10, 8, 10, 11, | |
| 616 12, 13, 14, 12, 14, 15, | |
| 617 16, 17, 18, 16, 18, 19, | |
| 618 20, 21, 22, 20, 22, 23, | |
| 619 24, 25, 26, 24, 26, 27, | |
| 620 28, 29, 30, 28, 30, 31, | |
| 621 32, 33, 34, 32, 34, 35, | |
| 622 36, 37, 38, 36, 38, 39, | |
| 623 40, 41, 42, 40, 42, 43, | |
| 624 44, 45, 46, 44, 46, 47, | |
| 625 48, 49, 50, 48, 50, 51, | |
| 626 52, 53, 54, 52, 54, 55, | |
| 627 56, 57, 58, 56, 58, 59, | |
| 628 60, 61, 62, 60, 62, 63, | |
| 629 64, 65, 66, 64, 66, 67, | |
| 630 68, 69, 70, 68, 70, 71, | |
| 631 72, 73, 74, 72, 74, 75, | |
| 632 76, 77, 78, 76, 78, 79, | |
| 633 80, 81, 82, 80, 82, 83, | |
| 634 84, 85, 86, 84, 86, 87, | |
| 635 88, 89, 90, 88, 90, 91, | |
| 636 92, 93, 94, 92, 94, 95, | |
| 637 96, 97, 98, 96, 98, 99, | |
| 638 100, 101, 102, 100, 102, 103, | |
| 639 104, 105, 106, 104, 106, 107, | |
| 640 108, 109, 110, 108, 110, 111, | |
| 641 112, 113, 114, 112, 114, 115, | |
| 642 116, 117, 118, 116, 118, 119, | |
| 643 120, 121, 122, 120, 122, 123, | |
| 644 124, 125, 126, 124, 126, 127 | |
| 645 }; | |
| 646 #else | |
| 647 static void generateQuadIndices(int n) { | |
| 648 int index = 0; | |
| 649 for (int i = 0; i < n; i++) { | |
| 650 SkDebugf(" %3d, %3d, %3d, %3d, %3d, %3d,\n", | |
| 651 index, index + 1, index + 2, index, index + 2, index + 3); | |
| 652 index += 4; | |
| 653 } | |
| 654 } | |
| 655 #endif | |
| 656 | |
| 657 void SkGLDrawProcs::drawQuads() { | |
| 658 SkASSERT(SK_ARRAY_COUNT(gQuadIndices) == MAX_QUADS * 6); | |
| 659 | |
| 660 glBindTexture(GL_TEXTURE_2D, fCurrTexture); | |
| 661 | |
| 662 #if 0 | |
| 663 static bool gOnce; | |
| 664 if (!gOnce) { | |
| 665 generateQuadIndices(MAX_QUADS); | |
| 666 gOnce = true; | |
| 667 } | |
| 668 #endif | |
| 669 | |
| 670 // convert from quad vertex count to triangle vertex count | |
| 671 // 6/4 * n == n + (n >> 1) since n is always a multiple of 4 | |
| 672 SkASSERT((fCurrQuad & 3) == 0); | |
| 673 int count = fCurrQuad + (fCurrQuad >> 1); | |
| 674 | |
| 675 if (fClip->isComplex()) { | |
| 676 SkGLClipIter iter(fViewportHeight); | |
| 677 iter.reset(*fClip); | |
| 678 while (!iter.done()) { | |
| 679 iter.scissor(); | |
| 680 glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_BYTE, gQuadIndices); | |
| 681 iter.next(); | |
| 682 } | |
| 683 } else { | |
| 684 glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_BYTE, gQuadIndices); | |
| 685 } | |
| 686 } | |
| 687 | |
| 688 void SkGLDevice::setupForText(SkDraw* draw, const SkPaint& paint) { | |
| 689 // we handle complex clips in the SkDraw common code, so we don't check | |
| 690 // for it here | |
| 691 this->updateMatrixClip(); | |
| 692 | |
| 693 SkGL::SetPaint(paint, false); | |
| 694 | |
| 695 glMatrixMode(GL_TEXTURE); | |
| 696 glLoadIdentity(); | |
| 697 | |
| 698 glMatrixMode(GL_MODELVIEW); | |
| 699 glPushMatrix(); | |
| 700 glLoadIdentity(); | |
| 701 | |
| 702 // deferred allocation | |
| 703 if (NULL == fDrawProcs) { | |
| 704 fDrawProcs = SkNEW(SkGLDrawProcs); | |
| 705 fDrawProcs->fD1GProc = SkGL_Draw1Glyph; | |
| 706 } | |
| 707 | |
| 708 // init our (and GL's) state | |
| 709 fDrawProcs->init(draw->fClip, this->height()); | |
| 710 // assign to the caller's SkDraw | |
| 711 draw->fProcs = fDrawProcs; | |
| 712 | |
| 713 glEnable(GL_TEXTURE_2D); | |
| 714 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); | |
| 715 glShadeModel(GL_FLAT); | |
| 716 } | |
| 717 | |
| 718 void SkGLDevice::drawText(const SkDraw& draw, const void* text, | |
| 719 size_t byteLength, SkScalar x, SkScalar y, | |
| 720 const SkPaint& paint) { | |
| 721 /* Currently, perspective text is draw via paths, invoked directly by | |
| 722 SkDraw. This can't work for us, since the bitmap that our draw points | |
| 723 to has no pixels, so we just abort if we're in perspective. | |
| 724 | |
| 725 Better fix would be to... | |
| 726 - have a callback inside draw to handle path drawing | |
| 727 - option to have draw call the font cache, which we could patch (?) | |
| 728 */ | |
| 729 if (draw.fMatrix->getType() & SkMatrix::kPerspective_Mask) { | |
| 730 return; | |
| 731 } | |
| 732 | |
| 733 SkDraw myDraw(draw); | |
| 734 this->setupForText(&myDraw, paint); | |
| 735 this->INHERITED::drawText(myDraw, text, byteLength, x, y, paint); | |
| 736 fDrawProcs->flush(); | |
| 737 glPopMatrix(); // GL_MODELVIEW | |
| 738 } | |
| 739 | |
| 740 void SkGLDevice::drawPosText(const SkDraw& draw, const void* text, | |
| 741 size_t byteLength, const SkScalar pos[], | |
| 742 SkScalar constY, int scalarsPerPos, | |
| 743 const SkPaint& paint) { | |
| 744 if (draw.fMatrix->getType() & SkMatrix::kPerspective_Mask) { | |
| 745 return; | |
| 746 } | |
| 747 | |
| 748 SkDraw myDraw(draw); | |
| 749 this->setupForText(&myDraw, paint); | |
| 750 this->INHERITED::drawPosText(myDraw, text, byteLength, pos, constY, | |
| 751 scalarsPerPos, paint); | |
| 752 fDrawProcs->flush(); | |
| 753 glPopMatrix(); // GL_MODELVIEW | |
| 754 } | |
| 755 | |
| 756 void SkGLDevice::drawTextOnPath(const SkDraw& draw, const void* text, | |
| 757 size_t byteLength, const SkPath& path, | |
| 758 const SkMatrix* m, const SkPaint& paint) { | |
| 759 // not supported yet | |
| 760 } | |
| 761 | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 113827:
Remove the remainder of the skia source code from the Chromium repo.... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/