1 /* 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #ifndef HEADLESS 27 28 #include <stdlib.h> 29 #include <math.h> 30 #include <jlong.h> 31 32 #include "sun_java2d_opengl_OGLTextRenderer.h" 33 34 #include "SurfaceData.h" 35 #include "OGLContext.h" 36 #include "OGLSurfaceData.h" 37 #include "OGLRenderQueue.h" 38 #include "OGLTextRenderer.h" 39 #include "OGLVertexCache.h" 40 #include "AccelGlyphCache.h" 41 #include "fontscalerdefs.h" 42 43 /** 44 * The following constants define the inner and outer bounds of the 45 * accelerated glyph cache. 46 */ 47 #define OGLTR_CACHE_WIDTH 512 48 #define OGLTR_CACHE_HEIGHT 512 49 #define OGLTR_CACHE_CELL_WIDTH 16 50 #define OGLTR_CACHE_CELL_HEIGHT 16 51 52 /** 53 * The current "glyph mode" state. This variable is used to track the 54 * codepath used to render a particular glyph. This variable is reset to 55 * MODE_NOT_INITED at the beginning of every call to OGLTR_DrawGlyphList(). 56 * As each glyph is rendered, the glyphMode variable is updated to reflect 57 * the current mode, so if the current mode is the same as the mode used 58 * to render the previous glyph, we can avoid doing costly setup operations 59 * each time. 60 */ 61 typedef enum { 62 MODE_NOT_INITED, 63 MODE_USE_CACHE_GRAY, 64 MODE_USE_CACHE_LCD, 65 MODE_NO_CACHE_GRAY, 66 MODE_NO_CACHE_LCD 67 } GlyphMode; 68 static GlyphMode glyphMode = MODE_NOT_INITED; 69 70 /** 71 * This enum indicates the current state of the hardware glyph cache. 72 * Initially the CacheStatus is set to CACHE_NOT_INITED, and then it is 73 * set to either GRAY or LCD when the glyph cache is initialized. 74 */ 75 typedef enum { 76 CACHE_NOT_INITED, 77 CACHE_GRAY, 78 CACHE_LCD 79 } CacheStatus; 80 static CacheStatus cacheStatus = CACHE_NOT_INITED; 81 82 /** 83 * This is the one glyph cache. Once it is initialized as either GRAY or 84 * LCD, it stays in that mode for the duration of the application. It should 85 * be safe to use this one glyph cache for all screens in a multimon 86 * environment, since the glyph cache texture is shared between all contexts, 87 * and (in theory) OpenGL drivers should be smart enough to manage that 88 * texture across all screens. 89 */ 90 static GlyphCacheInfo *glyphCache = NULL; 91 92 /** 93 * The handle to the LCD text fragment program object. 94 */ 95 static GLhandleARB lcdTextProgram = 0; 96 97 /** 98 * The size of one of the gamma LUT textures in any one dimension along 99 * the edge, in texels. 100 */ 101 #define LUT_EDGE 16 102 103 /** 104 * These are the texture object handles for the gamma and inverse gamma 105 * lookup tables. 106 */ 107 static GLuint gammaLutTextureID = 0; 108 static GLuint invGammaLutTextureID = 0; 109 110 /** 111 * This value tracks the previous LCD contrast setting, so if the contrast 112 * value hasn't changed since the last time the lookup tables were 113 * generated (not very common), then we can skip updating the tables. 114 */ 115 static jint lastLCDContrast = -1; 116 117 /** 118 * This value tracks the previous LCD rgbOrder setting, so if the rgbOrder 119 * value has changed since the last time, it indicates that we need to 120 * invalidate the cache, which may already store glyph images in the reverse 121 * order. Note that in most real world applications this value will not 122 * change over the course of the application, but tests like Font2DTest 123 * allow for changing the ordering at runtime, so we need to handle that case. 124 */ 125 static jboolean lastRGBOrder = JNI_TRUE; 126 127 /** 128 * This constant defines the size of the tile to use in the 129 * OGLTR_DrawLCDGlyphNoCache() method. See below for more on why we 130 * restrict this value to a particular size. 131 */ 132 #define OGLTR_NOCACHE_TILE_SIZE 32 133 134 /** 135 * These constants define the size of the "cached destination" texture. 136 * This texture is only used when rendering LCD-optimized text, as that 137 * codepath needs direct access to the destination. There is no way to 138 * access the framebuffer directly from an OpenGL shader, so we need to first 139 * copy the destination region corresponding to a particular glyph into 140 * this cached texture, and then that texture will be accessed inside the 141 * shader. Copying the destination into this cached texture can be a very 142 * expensive operation (accounting for about half the rendering time for 143 * LCD text), so to mitigate this cost we try to bulk read a horizontal 144 * region of the destination at a time. (These values are empirically 145 * derived for the common case where text runs horizontally.) 146 * 147 * Note: It is assumed in various calculations below that: 148 * (OGLTR_CACHED_DEST_WIDTH >= OGLTR_CACHE_CELL_WIDTH) && 149 * (OGLTR_CACHED_DEST_WIDTH >= OGLTR_NOCACHE_TILE_SIZE) && 150 * (OGLTR_CACHED_DEST_HEIGHT >= OGLTR_CACHE_CELL_HEIGHT) && 151 * (OGLTR_CACHED_DEST_HEIGHT >= OGLTR_NOCACHE_TILE_SIZE) 152 */ 153 #define OGLTR_CACHED_DEST_WIDTH 512 154 #define OGLTR_CACHED_DEST_HEIGHT 32 155 156 /** 157 * The handle to the "cached destination" texture object. 158 */ 159 static GLuint cachedDestTextureID = 0; 160 161 /** 162 * The current bounds of the "cached destination" texture, in destination 163 * coordinate space. The width/height of these bounds will not exceed the 164 * OGLTR_CACHED_DEST_WIDTH/HEIGHT values defined above. These bounds are 165 * only considered valid when the isCachedDestValid flag is JNI_TRUE. 166 */ 167 static SurfaceDataBounds cachedDestBounds; 168 169 /** 170 * This flag indicates whether the "cached destination" texture contains 171 * valid data. This flag is reset to JNI_FALSE at the beginning of every 172 * call to OGLTR_DrawGlyphList(). Once we copy valid destination data 173 * into the cached texture, this flag is set to JNI_TRUE. This way, we can 174 * limit the number of times we need to copy destination data, which is a 175 * very costly operation. 176 */ 177 static jboolean isCachedDestValid = JNI_FALSE; 178 179 /** 180 * The bounds of the previously rendered LCD glyph, in destination 181 * coordinate space. We use these bounds to determine whether the glyph 182 * currently being rendered overlaps the previously rendered glyph (i.e. 183 * its bounding box intersects that of the previously rendered glyph). If 184 * so, we need to re-read the destination area associated with that previous 185 * glyph so that we can correctly blend with the actual destination data. 186 */ 187 static SurfaceDataBounds previousGlyphBounds; 188 189 /** 190 * Initializes the one glyph cache (texture and data structure). 191 * If lcdCache is JNI_TRUE, the texture will contain RGB data, 192 * otherwise we will simply store the grayscale/monochrome glyph images 193 * as intensity values (which work well with the GL_MODULATE function). 194 */ 195 static jboolean 196 OGLTR_InitGlyphCache(jboolean lcdCache) 197 { 198 GlyphCacheInfo *gcinfo; 199 GLclampf priority = 1.0f; 200 GLenum internalFormat = lcdCache ? GL_RGB8 : GL_INTENSITY8; 201 GLenum pixelFormat = lcdCache ? GL_RGB : GL_LUMINANCE; 202 203 J2dTraceLn(J2D_TRACE_INFO, "OGLTR_InitGlyphCache"); 204 205 // init glyph cache data structure 206 gcinfo = AccelGlyphCache_Init(OGLTR_CACHE_WIDTH, 207 OGLTR_CACHE_HEIGHT, 208 OGLTR_CACHE_CELL_WIDTH, 209 OGLTR_CACHE_CELL_HEIGHT, 210 OGLVertexCache_FlushVertexCache); 211 if (gcinfo == NULL) { 212 J2dRlsTraceLn(J2D_TRACE_ERROR, 213 "OGLTR_InitGlyphCache: could not init OGL glyph cache"); 214 return JNI_FALSE; 215 } 216 217 // init cache texture object 218 j2d_glGenTextures(1, &gcinfo->cacheID); 219 j2d_glBindTexture(GL_TEXTURE_2D, gcinfo->cacheID); 220 j2d_glPrioritizeTextures(1, &gcinfo->cacheID, &priority); 221 j2d_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 222 j2d_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 223 224 j2d_glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, 225 OGLTR_CACHE_WIDTH, OGLTR_CACHE_HEIGHT, 0, 226 pixelFormat, GL_UNSIGNED_BYTE, NULL); 227 228 cacheStatus = (lcdCache ? CACHE_LCD : CACHE_GRAY); 229 glyphCache = gcinfo; 230 231 return JNI_TRUE; 232 } 233 234 /** 235 * Adds the given glyph to the glyph cache (texture and data structure) 236 * associated with the given OGLContext. 237 */ 238 static void 239 OGLTR_AddToGlyphCache(GlyphInfo *glyph, jboolean rgbOrder) 240 { 241 GLenum pixelFormat; 242 CacheCellInfo *ccinfo; 243 244 J2dTraceLn(J2D_TRACE_INFO, "OGLTR_AddToGlyphCache"); 245 246 if ((glyphCache == NULL) || (glyph->image == NULL)) { 247 return; 248 } 249 250 if (cacheStatus == CACHE_LCD) { 251 pixelFormat = rgbOrder ? GL_RGB : GL_BGR; 252 } else { 253 pixelFormat = GL_LUMINANCE; 254 } 255 256 AccelGlyphCache_AddGlyph(glyphCache, glyph); 257 ccinfo = (CacheCellInfo *) glyph->cellInfo; 258 259 if (ccinfo != NULL) { 260 // store glyph image in texture cell 261 j2d_glTexSubImage2D(GL_TEXTURE_2D, 0, 262 ccinfo->x, ccinfo->y, 263 glyph->width, glyph->height, 264 pixelFormat, GL_UNSIGNED_BYTE, glyph->image); 265 } 266 } 267 268 /** 269 * This is the GLSL fragment shader source code for rendering LCD-optimized 270 * text. Do not be frightened; it is much easier to understand than the 271 * equivalent ASM-like fragment program! 272 * 273 * The "uniform" variables at the top are initialized once the program is 274 * linked, and are updated at runtime as needed (e.g. when the source color 275 * changes, we will modify the "src_adj" value in OGLTR_UpdateLCDTextColor()). 276 * 277 * The "main" function is executed for each "fragment" (or pixel) in the 278 * glyph image. We have determined that the pow() function can be quite 279 * slow and it only operates on scalar values, not vectors as we require. 280 * So instead we build two 3D textures containing gamma (and inverse gamma) 281 * lookup tables that allow us to approximate a component-wise pow() function 282 * with a single 3D texture lookup. This approach is at least 2x faster 283 * than the equivalent pow() calls. 284 * 285 * The variables involved in the equation can be expressed as follows: 286 * 287 * Cs = Color component of the source (foreground color) [0.0, 1.0] 288 * Cd = Color component of the destination (background color) [0.0, 1.0] 289 * Cr = Color component to be written to the destination [0.0, 1.0] 290 * Ag = Glyph alpha (aka intensity or coverage) [0.0, 1.0] 291 * Ga = Gamma adjustment in the range [1.0, 2.5] 292 * (^ means raised to the power) 293 * 294 * And here is the theoretical equation approximated by this shader: 295 * 296 * Cr = (Ag*(Cs^Ga) + (1-Ag)*(Cd^Ga)) ^ (1/Ga) 297 */ 298 static const char *lcdTextShaderSource = 299 "uniform vec3 src_adj;" 300 "uniform sampler2D glyph_tex;" 301 "uniform sampler2D dst_tex;" 302 "uniform sampler3D invgamma_tex;" 303 "uniform sampler3D gamma_tex;" 304 "" 305 "void main(void)" 306 "{" 307 // load the RGB value from the glyph image at the current texcoord 308 " vec3 glyph_clr = vec3(texture2D(glyph_tex, gl_TexCoord[0].st));" 309 " if (glyph_clr == vec3(0.0)) {" 310 // zero coverage, so skip this fragment 311 " discard;" 312 " }" 313 // load the RGB value from the corresponding destination pixel 314 " vec3 dst_clr = vec3(texture2D(dst_tex, gl_TexCoord[1].st));" 315 // gamma adjust the dest color using the invgamma LUT 316 " vec3 dst_adj = vec3(texture3D(invgamma_tex, dst_clr.stp));" 317 // linearly interpolate the three color values 318 " vec3 result = mix(dst_adj, src_adj, glyph_clr);" 319 // gamma re-adjust the resulting color (alpha is always set to 1.0) 320 " gl_FragColor = vec4(vec3(texture3D(gamma_tex, result.stp)), 1.0);" 321 "}"; 322 323 /** 324 * Compiles and links the LCD text shader program. If successful, this 325 * function returns a handle to the newly created shader program; otherwise 326 * returns 0. 327 */ 328 static GLhandleARB 329 OGLTR_CreateLCDTextProgram() 330 { 331 GLhandleARB lcdTextProgram; 332 GLint loc; 333 334 J2dTraceLn(J2D_TRACE_INFO, "OGLTR_CreateLCDTextProgram"); 335 336 lcdTextProgram = OGLContext_CreateFragmentProgram(lcdTextShaderSource); 337 if (lcdTextProgram == 0) { 338 J2dRlsTraceLn(J2D_TRACE_ERROR, 339 "OGLTR_CreateLCDTextProgram: error creating program"); 340 return 0; 341 } 342 343 // "use" the program object temporarily so that we can set the uniforms 344 j2d_glUseProgramObjectARB(lcdTextProgram); 345 346 // set the "uniform" values 347 loc = j2d_glGetUniformLocationARB(lcdTextProgram, "glyph_tex"); 348 j2d_glUniform1iARB(loc, 0); // texture unit 0 349 loc = j2d_glGetUniformLocationARB(lcdTextProgram, "dst_tex"); 350 j2d_glUniform1iARB(loc, 1); // texture unit 1 351 loc = j2d_glGetUniformLocationARB(lcdTextProgram, "invgamma_tex"); 352 j2d_glUniform1iARB(loc, 2); // texture unit 2 353 loc = j2d_glGetUniformLocationARB(lcdTextProgram, "gamma_tex"); 354 j2d_glUniform1iARB(loc, 3); // texture unit 3 355 356 // "unuse" the program object; it will be re-bound later as needed 357 j2d_glUseProgramObjectARB(0); 358 359 return lcdTextProgram; 360 } 361 362 /** 363 * Initializes a 3D texture object for use as a three-dimensional gamma 364 * lookup table. Note that the wrap mode is initialized to GL_LINEAR so 365 * that the table will interpolate adjacent values when the index falls 366 * somewhere in between. 367 */ 368 static GLuint 369 OGLTR_InitGammaLutTexture() 370 { 371 GLuint lutTextureID; 372 373 j2d_glGenTextures(1, &lutTextureID); 374 j2d_glBindTexture(GL_TEXTURE_3D, lutTextureID); 375 j2d_glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 376 j2d_glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 377 j2d_glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 378 j2d_glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 379 j2d_glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); 380 381 return lutTextureID; 382 } 383 384 /** 385 * Updates the lookup table in the given texture object with the float 386 * values in the given system memory buffer. Note that we could use 387 * glTexSubImage3D() when updating the texture after its first 388 * initialization, but since we're updating the entire table (with 389 * power-of-two dimensions) and this is a relatively rare event, we'll 390 * just stick with glTexImage3D(). 391 */ 392 static void 393 OGLTR_UpdateGammaLutTexture(GLuint texID, GLfloat *lut, jint size) 394 { 395 j2d_glBindTexture(GL_TEXTURE_3D, texID); 396 j2d_glTexImage3D(GL_TEXTURE_3D, 0, GL_RGB8, 397 size, size, size, 0, GL_RGB, GL_FLOAT, lut); 398 } 399 400 /** 401 * (Re)Initializes the gamma lookup table textures. 402 * 403 * The given contrast value is an int in the range [100, 250] which we will 404 * then scale to fit in the range [1.0, 2.5]. We create two LUTs, one 405 * that essentially calculates pow(x, gamma) and the other calculates 406 * pow(x, 1/gamma). These values are replicated in all three dimensions, so 407 * given a single 3D texture coordinate (typically this will be a triplet 408 * in the form (r,g,b)), the 3D texture lookup will return an RGB triplet: 409 * 410 * (pow(r,g), pow(y,g), pow(z,g) 411 * 412 * where g is either gamma or 1/gamma, depending on the table. 413 */ 414 static jboolean 415 OGLTR_UpdateLCDTextContrast(jint contrast) 416 { 417 double gamma = ((double)contrast) / 100.0; 418 double ig = gamma; 419 double g = 1.0 / ig; 420 GLfloat lut[LUT_EDGE][LUT_EDGE][LUT_EDGE][3]; 421 GLfloat invlut[LUT_EDGE][LUT_EDGE][LUT_EDGE][3]; 422 int min = 0; 423 int max = LUT_EDGE - 1; 424 int x, y, z; 425 426 J2dTraceLn1(J2D_TRACE_INFO, 427 "OGLTR_UpdateLCDTextContrast: contrast=%d", contrast); 428 429 for (z = min; z <= max; z++) { 430 double zval = ((double)z) / max; 431 GLfloat gz = (GLfloat)pow(zval, g); 432 GLfloat igz = (GLfloat)pow(zval, ig); 433 434 for (y = min; y <= max; y++) { 435 double yval = ((double)y) / max; 436 GLfloat gy = (GLfloat)pow(yval, g); 437 GLfloat igy = (GLfloat)pow(yval, ig); 438 439 for (x = min; x <= max; x++) { 440 double xval = ((double)x) / max; 441 GLfloat gx = (GLfloat)pow(xval, g); 442 GLfloat igx = (GLfloat)pow(xval, ig); 443 444 lut[z][y][x][0] = gx; 445 lut[z][y][x][1] = gy; 446 lut[z][y][x][2] = gz; 447 448 invlut[z][y][x][0] = igx; 449 invlut[z][y][x][1] = igy; 450 invlut[z][y][x][2] = igz; 451 } 452 } 453 } 454 455 if (gammaLutTextureID == 0) { 456 gammaLutTextureID = OGLTR_InitGammaLutTexture(); 457 } 458 OGLTR_UpdateGammaLutTexture(gammaLutTextureID, (GLfloat *)lut, LUT_EDGE); 459 460 if (invGammaLutTextureID == 0) { 461 invGammaLutTextureID = OGLTR_InitGammaLutTexture(); 462 } 463 OGLTR_UpdateGammaLutTexture(invGammaLutTextureID, 464 (GLfloat *)invlut, LUT_EDGE); 465 466 return JNI_TRUE; 467 } 468 469 /** 470 * Updates the current gamma-adjusted source color ("src_adj") of the LCD 471 * text shader program. Note that we could calculate this value in the 472 * shader (e.g. just as we do for "dst_adj"), but would be unnecessary work 473 * (and a measurable performance hit, maybe around 5%) since this value is 474 * constant over the entire glyph list. So instead we just calculate the 475 * gamma-adjusted value once and update the uniform parameter of the LCD 476 * shader as needed. 477 */ 478 static jboolean 479 OGLTR_UpdateLCDTextColor(jint contrast) 480 { 481 double gamma = ((double)contrast) / 100.0; 482 GLfloat radj, gadj, badj; 483 GLfloat clr[4]; 484 GLint loc; 485 486 J2dTraceLn1(J2D_TRACE_INFO, 487 "OGLTR_UpdateLCDTextColor: contrast=%d", contrast); 488 489 /* 490 * Note: Ideally we would update the "src_adj" uniform parameter only 491 * when there is a change in the source color. Fortunately, the cost 492 * of querying the current OpenGL color state and updating the uniform 493 * value is quite small, and in the common case we only need to do this 494 * once per GlyphList, so we gain little from trying to optimize too 495 * eagerly here. 496 */ 497 498 // get the current OpenGL primary color state 499 j2d_glGetFloatv(GL_CURRENT_COLOR, clr); 500 501 // gamma adjust the primary color 502 radj = (GLfloat)pow(clr[0], gamma); 503 gadj = (GLfloat)pow(clr[1], gamma); 504 badj = (GLfloat)pow(clr[2], gamma); 505 506 // update the "src_adj" parameter of the shader program with this value 507 loc = j2d_glGetUniformLocationARB(lcdTextProgram, "src_adj"); 508 j2d_glUniform3fARB(loc, radj, gadj, badj); 509 510 return JNI_TRUE; 511 } 512 513 /** 514 * Enables the LCD text shader and updates any related state, such as the 515 * gamma lookup table textures. 516 */ 517 static jboolean 518 OGLTR_EnableLCDGlyphModeState(GLuint glyphTextureID, jint contrast) 519 { 520 // bind the texture containing glyph data to texture unit 0 521 j2d_glActiveTextureARB(GL_TEXTURE0_ARB); 522 j2d_glBindTexture(GL_TEXTURE_2D, glyphTextureID); 523 524 // bind the texture tile containing destination data to texture unit 1 525 j2d_glActiveTextureARB(GL_TEXTURE1_ARB); 526 if (cachedDestTextureID == 0) { 527 cachedDestTextureID = 528 OGLContext_CreateBlitTexture(GL_RGB8, GL_RGB, 529 OGLTR_CACHED_DEST_WIDTH, 530 OGLTR_CACHED_DEST_HEIGHT); 531 if (cachedDestTextureID == 0) { 532 return JNI_FALSE; 533 } 534 } 535 j2d_glBindTexture(GL_TEXTURE_2D, cachedDestTextureID); 536 537 // note that GL_TEXTURE_2D was already enabled for texture unit 0, 538 // but we need to explicitly enable it for texture unit 1 539 j2d_glEnable(GL_TEXTURE_2D); 540 541 // create the LCD text shader, if necessary 542 if (lcdTextProgram == 0) { 543 lcdTextProgram = OGLTR_CreateLCDTextProgram(); 544 if (lcdTextProgram == 0) { 545 return JNI_FALSE; 546 } 547 } 548 549 // enable the LCD text shader 550 j2d_glUseProgramObjectARB(lcdTextProgram); 551 552 // update the current contrast settings, if necessary 553 if (lastLCDContrast != contrast) { 554 if (!OGLTR_UpdateLCDTextContrast(contrast)) { 555 return JNI_FALSE; 556 } 557 lastLCDContrast = contrast; 558 } 559 560 // update the current color settings 561 if (!OGLTR_UpdateLCDTextColor(contrast)) { 562 return JNI_FALSE; 563 } 564 565 // bind the gamma LUT textures 566 j2d_glActiveTextureARB(GL_TEXTURE2_ARB); 567 j2d_glBindTexture(GL_TEXTURE_3D, invGammaLutTextureID); 568 j2d_glEnable(GL_TEXTURE_3D); 569 j2d_glActiveTextureARB(GL_TEXTURE3_ARB); 570 j2d_glBindTexture(GL_TEXTURE_3D, gammaLutTextureID); 571 j2d_glEnable(GL_TEXTURE_3D); 572 573 return JNI_TRUE; 574 } 575 576 void 577 OGLTR_EnableGlyphVertexCache(OGLContext *oglc) 578 { 579 J2dTraceLn(J2D_TRACE_INFO, "OGLTR_EnableGlyphVertexCache"); 580 581 if (!OGLVertexCache_InitVertexCache(oglc)) { 582 return; 583 } 584 585 if (glyphCache == NULL) { 586 if (!OGLTR_InitGlyphCache(JNI_FALSE)) { 587 return; 588 } 589 } 590 591 j2d_glEnable(GL_TEXTURE_2D); 592 j2d_glBindTexture(GL_TEXTURE_2D, glyphCache->cacheID); 593 j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 1); 594 595 // for grayscale/monochrome text, the current OpenGL source color 596 // is modulated with the glyph image as part of the texture 597 // application stage, so we use GL_MODULATE here 598 OGLC_UPDATE_TEXTURE_FUNCTION(oglc, GL_MODULATE); 599 } 600 601 void 602 OGLTR_DisableGlyphVertexCache(OGLContext *oglc) 603 { 604 J2dTraceLn(J2D_TRACE_INFO, "OGLTR_DisableGlyphVertexCache"); 605 606 OGLVertexCache_FlushVertexCache(); 607 OGLVertexCache_RestoreColorState(oglc); 608 609 j2d_glDisable(GL_TEXTURE_2D); 610 j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 611 j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); 612 j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); 613 j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); 614 } 615 616 /** 617 * Disables any pending state associated with the current "glyph mode". 618 */ 619 static void 620 OGLTR_DisableGlyphModeState() 621 { 622 switch (glyphMode) { 623 case MODE_NO_CACHE_LCD: 624 j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); 625 j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); 626 /* FALLTHROUGH */ 627 628 case MODE_USE_CACHE_LCD: 629 j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); 630 j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 631 j2d_glUseProgramObjectARB(0); 632 j2d_glActiveTextureARB(GL_TEXTURE3_ARB); 633 j2d_glDisable(GL_TEXTURE_3D); 634 j2d_glActiveTextureARB(GL_TEXTURE2_ARB); 635 j2d_glDisable(GL_TEXTURE_3D); 636 j2d_glActiveTextureARB(GL_TEXTURE1_ARB); 637 j2d_glDisable(GL_TEXTURE_2D); 638 j2d_glActiveTextureARB(GL_TEXTURE0_ARB); 639 break; 640 641 case MODE_NO_CACHE_GRAY: 642 case MODE_USE_CACHE_GRAY: 643 case MODE_NOT_INITED: 644 default: 645 break; 646 } 647 } 648 649 static jboolean 650 OGLTR_DrawGrayscaleGlyphViaCache(OGLContext *oglc, 651 GlyphInfo *ginfo, jint x, jint y) 652 { 653 CacheCellInfo *cell; 654 jfloat x1, y1, x2, y2; 655 656 if (glyphMode != MODE_USE_CACHE_GRAY) { 657 OGLTR_DisableGlyphModeState(); 658 CHECK_PREVIOUS_OP(OGL_STATE_GLYPH_OP); 659 glyphMode = MODE_USE_CACHE_GRAY; 660 } 661 662 if (ginfo->cellInfo == NULL) { 663 // attempt to add glyph to accelerated glyph cache 664 OGLTR_AddToGlyphCache(ginfo, JNI_FALSE); 665 666 if (ginfo->cellInfo == NULL) { 667 // we'll just no-op in the rare case that the cell is NULL 668 return JNI_TRUE; 669 } 670 } 671 672 cell = (CacheCellInfo *) (ginfo->cellInfo); 673 cell->timesRendered++; 674 675 x1 = (jfloat)x; 676 y1 = (jfloat)y; 677 x2 = x1 + ginfo->width; 678 y2 = y1 + ginfo->height; 679 680 OGLVertexCache_AddGlyphQuad(oglc, 681 cell->tx1, cell->ty1, 682 cell->tx2, cell->ty2, 683 x1, y1, x2, y2); 684 685 return JNI_TRUE; 686 } 687 688 /** 689 * Evaluates to true if the rectangle defined by gx1/gy1/gx2/gy2 is 690 * inside outerBounds. 691 */ 692 #define INSIDE(gx1, gy1, gx2, gy2, outerBounds) \ 693 (((gx1) >= outerBounds.x1) && ((gy1) >= outerBounds.y1) && \ 694 ((gx2) <= outerBounds.x2) && ((gy2) <= outerBounds.y2)) 695 696 /** 697 * Evaluates to true if the rectangle defined by gx1/gy1/gx2/gy2 intersects 698 * the rectangle defined by bounds. 699 */ 700 #define INTERSECTS(gx1, gy1, gx2, gy2, bounds) \ 701 ((bounds.x2 > (gx1)) && (bounds.y2 > (gy1)) && \ 702 (bounds.x1 < (gx2)) && (bounds.y1 < (gy2))) 703 704 /** 705 * This method checks to see if the given LCD glyph bounds fall within the 706 * cached destination texture bounds. If so, this method can return 707 * immediately. If not, this method will copy a chunk of framebuffer data 708 * into the cached destination texture and then update the current cached 709 * destination bounds before returning. 710 */ 711 static void 712 OGLTR_UpdateCachedDestination(OGLSDOps *dstOps, GlyphInfo *ginfo, 713 jint gx1, jint gy1, jint gx2, jint gy2, 714 jint glyphIndex, jint totalGlyphs) 715 { 716 jint dx1, dy1, dx2, dy2; 717 jint dx1adj, dy1adj; 718 719 if (isCachedDestValid && INSIDE(gx1, gy1, gx2, gy2, cachedDestBounds)) { 720 // glyph is already within the cached destination bounds; no need 721 // to read back the entire destination region again, but we do 722 // need to see if the current glyph overlaps the previous glyph... 723 724 if (INTERSECTS(gx1, gy1, gx2, gy2, previousGlyphBounds)) { 725 // the current glyph overlaps the destination region touched 726 // by the previous glyph, so now we need to read back the part 727 // of the destination corresponding to the previous glyph 728 dx1 = previousGlyphBounds.x1; 729 dy1 = previousGlyphBounds.y1; 730 dx2 = previousGlyphBounds.x2; 731 dy2 = previousGlyphBounds.y2; 732 733 // this accounts for lower-left origin of the destination region 734 dx1adj = dstOps->xOffset + dx1; 735 dy1adj = dstOps->yOffset + dstOps->height - dy2; 736 737 // copy destination into subregion of cached texture tile: 738 // dx1-cachedDestBounds.x1 == +xoffset from left side of texture 739 // cachedDestBounds.y2-dy2 == +yoffset from bottom of texture 740 j2d_glActiveTextureARB(GL_TEXTURE1_ARB); 741 j2d_glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 742 dx1 - cachedDestBounds.x1, 743 cachedDestBounds.y2 - dy2, 744 dx1adj, dy1adj, 745 dx2-dx1, dy2-dy1); 746 } 747 } else { 748 jint remainingWidth; 749 750 // destination region is not valid, so we need to read back a 751 // chunk of the destination into our cached texture 752 753 // position the upper-left corner of the destination region on the 754 // "top" line of glyph list 755 // REMIND: this isn't ideal; it would be better if we had some idea 756 // of the bounding box of the whole glyph list (this is 757 // do-able, but would require iterating through the whole 758 // list up front, which may present its own problems) 759 dx1 = gx1; 760 dy1 = gy1; 761 762 if (ginfo->advanceX > 0) { 763 // estimate the width based on our current position in the glyph 764 // list and using the x advance of the current glyph (this is just 765 // a quick and dirty heuristic; if this is a "thin" glyph image, 766 // then we're likely to underestimate, and if it's "thick" then we 767 // may end up reading back more than we need to) 768 remainingWidth = 769 (jint)(ginfo->advanceX * (totalGlyphs - glyphIndex)); 770 if (remainingWidth > OGLTR_CACHED_DEST_WIDTH) { 771 remainingWidth = OGLTR_CACHED_DEST_WIDTH; 772 } else if (remainingWidth < ginfo->width) { 773 // in some cases, the x-advance may be slightly smaller 774 // than the actual width of the glyph; if so, adjust our 775 // estimate so that we can accommodate the entire glyph 776 remainingWidth = ginfo->width; 777 } 778 } else { 779 // a negative advance is possible when rendering rotated text, 780 // in which case it is difficult to estimate an appropriate 781 // region for readback, so we will pick a region that 782 // encompasses just the current glyph 783 remainingWidth = ginfo->width; 784 } 785 dx2 = dx1 + remainingWidth; 786 787 // estimate the height (this is another sloppy heuristic; we'll 788 // make the cached destination region tall enough to encompass most 789 // glyphs that are small enough to fit in the glyph cache, and then 790 // we add a little something extra to account for descenders 791 dy2 = dy1 + OGLTR_CACHE_CELL_HEIGHT + 2; 792 793 // this accounts for lower-left origin of the destination region 794 dx1adj = dstOps->xOffset + dx1; 795 dy1adj = dstOps->yOffset + dstOps->height - dy2; 796 797 // copy destination into cached texture tile (the lower-left corner 798 // of the destination region will be positioned at the lower-left 799 // corner (0,0) of the texture) 800 j2d_glActiveTextureARB(GL_TEXTURE1_ARB); 801 j2d_glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 802 0, 0, dx1adj, dy1adj, 803 dx2-dx1, dy2-dy1); 804 805 // update the cached bounds and mark it valid 806 cachedDestBounds.x1 = dx1; 807 cachedDestBounds.y1 = dy1; 808 cachedDestBounds.x2 = dx2; 809 cachedDestBounds.y2 = dy2; 810 isCachedDestValid = JNI_TRUE; 811 } 812 813 // always update the previous glyph bounds 814 previousGlyphBounds.x1 = gx1; 815 previousGlyphBounds.y1 = gy1; 816 previousGlyphBounds.x2 = gx2; 817 previousGlyphBounds.y2 = gy2; 818 } 819 820 static jboolean 821 OGLTR_DrawLCDGlyphViaCache(OGLContext *oglc, OGLSDOps *dstOps, 822 GlyphInfo *ginfo, jint x, jint y, 823 jint glyphIndex, jint totalGlyphs, 824 jboolean rgbOrder, jint contrast) 825 { 826 CacheCellInfo *cell; 827 jint dx1, dy1, dx2, dy2; 828 jfloat dtx1, dty1, dtx2, dty2; 829 830 if (glyphMode != MODE_USE_CACHE_LCD) { 831 OGLTR_DisableGlyphModeState(); 832 CHECK_PREVIOUS_OP(GL_TEXTURE_2D); 833 j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 1); 834 835 if (glyphCache == NULL) { 836 if (!OGLTR_InitGlyphCache(JNI_TRUE)) { 837 return JNI_FALSE; 838 } 839 } 840 841 if (rgbOrder != lastRGBOrder) { 842 // need to invalidate the cache in this case; see comments 843 // for lastRGBOrder above 844 AccelGlyphCache_Invalidate(glyphCache); 845 lastRGBOrder = rgbOrder; 846 } 847 848 if (!OGLTR_EnableLCDGlyphModeState(glyphCache->cacheID, contrast)) { 849 return JNI_FALSE; 850 } 851 852 // when a fragment shader is enabled, the texture function state is 853 // ignored, so the following line is not needed... 854 // OGLC_UPDATE_TEXTURE_FUNCTION(oglc, GL_MODULATE); 855 856 glyphMode = MODE_USE_CACHE_LCD; 857 } 858 859 if (ginfo->cellInfo == NULL) { 860 // rowBytes will always be a multiple of 3, so the following is safe 861 j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH, ginfo->rowBytes / 3); 862 863 // make sure the glyph cache texture is bound to texture unit 0 864 j2d_glActiveTextureARB(GL_TEXTURE0_ARB); 865 866 // attempt to add glyph to accelerated glyph cache 867 OGLTR_AddToGlyphCache(ginfo, rgbOrder); 868 869 if (ginfo->cellInfo == NULL) { 870 // we'll just no-op in the rare case that the cell is NULL 871 return JNI_TRUE; 872 } 873 } 874 875 cell = (CacheCellInfo *) (ginfo->cellInfo); 876 cell->timesRendered++; 877 878 // location of the glyph in the destination's coordinate space 879 dx1 = x; 880 dy1 = y; 881 dx2 = dx1 + ginfo->width; 882 dy2 = dy1 + ginfo->height; 883 884 // copy destination into second cached texture, if necessary 885 OGLTR_UpdateCachedDestination(dstOps, ginfo, 886 dx1, dy1, dx2, dy2, 887 glyphIndex, totalGlyphs); 888 889 // texture coordinates of the destination tile 890 dtx1 = ((jfloat)(dx1 - cachedDestBounds.x1)) / OGLTR_CACHED_DEST_WIDTH; 891 dty1 = ((jfloat)(cachedDestBounds.y2 - dy1)) / OGLTR_CACHED_DEST_HEIGHT; 892 dtx2 = ((jfloat)(dx2 - cachedDestBounds.x1)) / OGLTR_CACHED_DEST_WIDTH; 893 dty2 = ((jfloat)(cachedDestBounds.y2 - dy2)) / OGLTR_CACHED_DEST_HEIGHT; 894 895 // render composed texture to the destination surface 896 j2d_glBegin(GL_QUADS); 897 j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, cell->tx1, cell->ty1); 898 j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx1, dty1); 899 j2d_glVertex2i(dx1, dy1); 900 j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, cell->tx2, cell->ty1); 901 j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx2, dty1); 902 j2d_glVertex2i(dx2, dy1); 903 j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, cell->tx2, cell->ty2); 904 j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx2, dty2); 905 j2d_glVertex2i(dx2, dy2); 906 j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, cell->tx1, cell->ty2); 907 j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx1, dty2); 908 j2d_glVertex2i(dx1, dy2); 909 j2d_glEnd(); 910 911 return JNI_TRUE; 912 } 913 914 static jboolean 915 OGLTR_DrawGrayscaleGlyphNoCache(OGLContext *oglc, 916 GlyphInfo *ginfo, jint x, jint y) 917 { 918 jint tw, th; 919 jint sx, sy, sw, sh; 920 jint x0; 921 jint w = ginfo->width; 922 jint h = ginfo->height; 923 924 if (glyphMode != MODE_NO_CACHE_GRAY) { 925 OGLTR_DisableGlyphModeState(); 926 CHECK_PREVIOUS_OP(OGL_STATE_MASK_OP); 927 glyphMode = MODE_NO_CACHE_GRAY; 928 } 929 930 x0 = x; 931 tw = OGLVC_MASK_CACHE_TILE_WIDTH; 932 th = OGLVC_MASK_CACHE_TILE_HEIGHT; 933 934 for (sy = 0; sy < h; sy += th, y += th) { 935 x = x0; 936 sh = ((sy + th) > h) ? (h - sy) : th; 937 938 for (sx = 0; sx < w; sx += tw, x += tw) { 939 sw = ((sx + tw) > w) ? (w - sx) : tw; 940 941 OGLVertexCache_AddMaskQuad(oglc, 942 sx, sy, x, y, sw, sh, 943 w, ginfo->image); 944 } 945 } 946 947 return JNI_TRUE; 948 } 949 950 static jboolean 951 OGLTR_DrawLCDGlyphNoCache(OGLContext *oglc, OGLSDOps *dstOps, 952 GlyphInfo *ginfo, jint x, jint y, 953 jint rowBytesOffset, 954 jboolean rgbOrder, jint contrast) 955 { 956 GLfloat tx1, ty1, tx2, ty2; 957 GLfloat dtx1, dty1, dtx2, dty2; 958 jint tw, th; 959 jint sx, sy, sw, sh, dxadj, dyadj; 960 jint x0; 961 jint w = ginfo->width; 962 jint h = ginfo->height; 963 GLenum pixelFormat = rgbOrder ? GL_RGB : GL_BGR; 964 965 if (glyphMode != MODE_NO_CACHE_LCD) { 966 OGLTR_DisableGlyphModeState(); 967 CHECK_PREVIOUS_OP(GL_TEXTURE_2D); 968 j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 1); 969 970 if (oglc->blitTextureID == 0) { 971 if (!OGLContext_InitBlitTileTexture(oglc)) { 972 return JNI_FALSE; 973 } 974 } 975 976 if (!OGLTR_EnableLCDGlyphModeState(oglc->blitTextureID, contrast)) { 977 return JNI_FALSE; 978 } 979 980 // when a fragment shader is enabled, the texture function state is 981 // ignored, so the following line is not needed... 982 // OGLC_UPDATE_TEXTURE_FUNCTION(oglc, GL_MODULATE); 983 984 glyphMode = MODE_NO_CACHE_LCD; 985 } 986 987 // rowBytes will always be a multiple of 3, so the following is safe 988 j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH, ginfo->rowBytes / 3); 989 990 x0 = x; 991 tx1 = 0.0f; 992 ty1 = 0.0f; 993 dtx1 = 0.0f; 994 dty2 = 0.0f; 995 tw = OGLTR_NOCACHE_TILE_SIZE; 996 th = OGLTR_NOCACHE_TILE_SIZE; 997 998 for (sy = 0; sy < h; sy += th, y += th) { 999 x = x0; 1000 sh = ((sy + th) > h) ? (h - sy) : th; 1001 1002 for (sx = 0; sx < w; sx += tw, x += tw) { 1003 sw = ((sx + tw) > w) ? (w - sx) : tw; 1004 1005 // update the source pointer offsets 1006 j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx); 1007 j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, sy); 1008 1009 // copy LCD mask into glyph texture tile 1010 j2d_glActiveTextureARB(GL_TEXTURE0_ARB); 1011 j2d_glTexSubImage2D(GL_TEXTURE_2D, 0, 1012 0, 0, sw, sh, 1013 pixelFormat, GL_UNSIGNED_BYTE, 1014 ginfo->image + rowBytesOffset); 1015 1016 // update the lower-right glyph texture coordinates 1017 tx2 = ((GLfloat)sw) / OGLC_BLIT_TILE_SIZE; 1018 ty2 = ((GLfloat)sh) / OGLC_BLIT_TILE_SIZE; 1019 1020 // this accounts for lower-left origin of the destination region 1021 dxadj = dstOps->xOffset + x; 1022 dyadj = dstOps->yOffset + dstOps->height - (y + sh); 1023 1024 // copy destination into cached texture tile (the lower-left 1025 // corner of the destination region will be positioned at the 1026 // lower-left corner (0,0) of the texture) 1027 j2d_glActiveTextureARB(GL_TEXTURE1_ARB); 1028 j2d_glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 1029 0, 0, 1030 dxadj, dyadj, 1031 sw, sh); 1032 1033 // update the remaining destination texture coordinates 1034 dtx2 = ((GLfloat)sw) / OGLTR_CACHED_DEST_WIDTH; 1035 dty1 = ((GLfloat)sh) / OGLTR_CACHED_DEST_HEIGHT; 1036 1037 // render composed texture to the destination surface 1038 j2d_glBegin(GL_QUADS); 1039 j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, tx1, ty1); 1040 j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx1, dty1); 1041 j2d_glVertex2i(x, y); 1042 j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, tx2, ty1); 1043 j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx2, dty1); 1044 j2d_glVertex2i(x + sw, y); 1045 j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, tx2, ty2); 1046 j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx2, dty2); 1047 j2d_glVertex2i(x + sw, y + sh); 1048 j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, tx1, ty2); 1049 j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx1, dty2); 1050 j2d_glVertex2i(x, y + sh); 1051 j2d_glEnd(); 1052 } 1053 } 1054 1055 return JNI_TRUE; 1056 } 1057 1058 // see DrawGlyphList.c for more on this macro... 1059 #define FLOOR_ASSIGN(l, r) \ 1060 if ((r)<0) (l) = ((int)floor(r)); else (l) = ((int)(r)) 1061 1062 void 1063 OGLTR_DrawGlyphList(JNIEnv *env, OGLContext *oglc, OGLSDOps *dstOps, 1064 jint totalGlyphs, jboolean usePositions, 1065 jboolean subPixPos, jboolean rgbOrder, jint lcdContrast, 1066 jfloat glyphListOrigX, jfloat glyphListOrigY, 1067 unsigned char *images, unsigned char *positions) 1068 { 1069 int glyphCounter; 1070 1071 J2dTraceLn(J2D_TRACE_INFO, "OGLTR_DrawGlyphList"); 1072 1073 RETURN_IF_NULL(oglc); 1074 RETURN_IF_NULL(dstOps); 1075 RETURN_IF_NULL(images); 1076 if (usePositions) { 1077 RETURN_IF_NULL(positions); 1078 } 1079 1080 glyphMode = MODE_NOT_INITED; 1081 isCachedDestValid = JNI_FALSE; 1082 1083 for (glyphCounter = 0; glyphCounter < totalGlyphs; glyphCounter++) { 1084 jint x, y; 1085 jfloat glyphx, glyphy; 1086 jboolean grayscale, ok; 1087 GlyphInfo *ginfo = (GlyphInfo *)jlong_to_ptr(NEXT_LONG(images)); 1088 1089 if (ginfo == NULL) { 1090 // this shouldn't happen, but if it does we'll just break out... 1091 J2dRlsTraceLn(J2D_TRACE_ERROR, 1092 "OGLTR_DrawGlyphList: glyph info is null"); 1093 break; 1094 } 1095 1096 grayscale = (ginfo->rowBytes == ginfo->width); 1097 1098 if (usePositions) { 1099 jfloat posx = NEXT_FLOAT(positions); 1100 jfloat posy = NEXT_FLOAT(positions); 1101 glyphx = glyphListOrigX + posx + ginfo->topLeftX; 1102 glyphy = glyphListOrigY + posy + ginfo->topLeftY; 1103 FLOOR_ASSIGN(x, glyphx); 1104 FLOOR_ASSIGN(y, glyphy); 1105 } else { 1106 glyphx = glyphListOrigX + ginfo->topLeftX; 1107 glyphy = glyphListOrigY + ginfo->topLeftY; 1108 FLOOR_ASSIGN(x, glyphx); 1109 FLOOR_ASSIGN(y, glyphy); 1110 glyphListOrigX += ginfo->advanceX; 1111 glyphListOrigY += ginfo->advanceY; 1112 } 1113 1114 if (ginfo->image == NULL) { 1115 continue; 1116 } 1117 1118 if (grayscale) { 1119 // grayscale or monochrome glyph data 1120 if (cacheStatus != CACHE_LCD && 1121 ginfo->width <= OGLTR_CACHE_CELL_WIDTH && 1122 ginfo->height <= OGLTR_CACHE_CELL_HEIGHT) 1123 { 1124 ok = OGLTR_DrawGrayscaleGlyphViaCache(oglc, ginfo, x, y); 1125 } else { 1126 ok = OGLTR_DrawGrayscaleGlyphNoCache(oglc, ginfo, x, y); 1127 } 1128 } else { 1129 // LCD-optimized glyph data 1130 jint rowBytesOffset = 0; 1131 1132 if (subPixPos) { 1133 jint frac = (jint)((glyphx - x) * 3); 1134 if (frac != 0) { 1135 rowBytesOffset = 3 - frac; 1136 x += 1; 1137 } 1138 } 1139 1140 if (rowBytesOffset == 0 && 1141 cacheStatus != CACHE_GRAY && 1142 ginfo->width <= OGLTR_CACHE_CELL_WIDTH && 1143 ginfo->height <= OGLTR_CACHE_CELL_HEIGHT) 1144 { 1145 ok = OGLTR_DrawLCDGlyphViaCache(oglc, dstOps, 1146 ginfo, x, y, 1147 glyphCounter, totalGlyphs, 1148 rgbOrder, lcdContrast); 1149 } else { 1150 ok = OGLTR_DrawLCDGlyphNoCache(oglc, dstOps, 1151 ginfo, x, y, 1152 rowBytesOffset, 1153 rgbOrder, lcdContrast); 1154 } 1155 } 1156 1157 if (!ok) { 1158 break; 1159 } 1160 } 1161 1162 OGLTR_DisableGlyphModeState(); 1163 } 1164 1165 JNIEXPORT void JNICALL 1166 Java_sun_java2d_opengl_OGLTextRenderer_drawGlyphList 1167 (JNIEnv *env, jobject self, 1168 jint numGlyphs, jboolean usePositions, 1169 jboolean subPixPos, jboolean rgbOrder, jint lcdContrast, 1170 jfloat glyphListOrigX, jfloat glyphListOrigY, 1171 jlongArray imgArray, jfloatArray posArray) 1172 { 1173 unsigned char *images; 1174 1175 J2dTraceLn(J2D_TRACE_INFO, "OGLTextRenderer_drawGlyphList"); 1176 1177 images = (unsigned char *) 1178 (*env)->GetPrimitiveArrayCritical(env, imgArray, NULL); 1179 if (images != NULL) { 1180 OGLContext *oglc = OGLRenderQueue_GetCurrentContext(); 1181 OGLSDOps *dstOps = OGLRenderQueue_GetCurrentDestination(); 1182 1183 if (usePositions) { 1184 unsigned char *positions = (unsigned char *) 1185 (*env)->GetPrimitiveArrayCritical(env, posArray, NULL); 1186 if (positions != NULL) { 1187 OGLTR_DrawGlyphList(env, oglc, dstOps, 1188 numGlyphs, usePositions, 1189 subPixPos, rgbOrder, lcdContrast, 1190 glyphListOrigX, glyphListOrigY, 1191 images, positions); 1192 (*env)->ReleasePrimitiveArrayCritical(env, posArray, 1193 positions, JNI_ABORT); 1194 } 1195 } else { 1196 OGLTR_DrawGlyphList(env, oglc, dstOps, 1197 numGlyphs, usePositions, 1198 subPixPos, rgbOrder, lcdContrast, 1199 glyphListOrigX, glyphListOrigY, 1200 images, NULL); 1201 } 1202 1203 // 6358147: reset current state, and ensure rendering is 1204 // flushed to dest 1205 if (oglc != NULL) { 1206 RESET_PREVIOUS_OP(); 1207 j2d_glFlush(); 1208 } 1209 1210 (*env)->ReleasePrimitiveArrayCritical(env, imgArray, 1211 images, JNI_ABORT); 1212 } 1213 } 1214 1215 #endif /* !HEADLESS */