egl.cpp revision 43aa2b1cbf7a03e248e10f4d0fec0463257cd52d
1/* 2** 3** Copyright 2007 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#define LOG_TAG "EGL" 19 20#include <assert.h> 21#include <errno.h> 22#include <stdlib.h> 23#include <stdio.h> 24#include <string.h> 25#include <unistd.h> 26#include <fcntl.h> 27#include <sys/ioctl.h> 28#include <sys/types.h> 29#include <sys/mman.h> 30 31#include <cutils/log.h> 32#include <cutils/atomic.h> 33 34#include <utils/threads.h> 35 36#include <EGL/egl.h> 37#include <EGL/eglext.h> 38#include <GLES/gl.h> 39#include <GLES/glext.h> 40 41#include <pixelflinger/format.h> 42#include <pixelflinger/pixelflinger.h> 43 44#include "context.h" 45#include "state.h" 46#include "texture.h" 47#include "matrix.h" 48 49#undef NELEM 50#define NELEM(x) (sizeof(x)/sizeof(*(x))) 51 52// ---------------------------------------------------------------------------- 53namespace android { 54// ---------------------------------------------------------------------------- 55 56const unsigned int NUM_DISPLAYS = 1; 57 58static pthread_mutex_t gInitMutex = PTHREAD_MUTEX_INITIALIZER; 59static pthread_mutex_t gErrorKeyMutex = PTHREAD_MUTEX_INITIALIZER; 60static pthread_key_t gEGLErrorKey = -1; 61#ifndef HAVE_ANDROID_OS 62namespace gl { 63pthread_key_t gGLKey = -1; 64}; // namespace gl 65#endif 66 67template<typename T> 68static T setError(GLint error, T returnValue) { 69 if (ggl_unlikely(gEGLErrorKey == -1)) { 70 pthread_mutex_lock(&gErrorKeyMutex); 71 if (gEGLErrorKey == -1) 72 pthread_key_create(&gEGLErrorKey, NULL); 73 pthread_mutex_unlock(&gErrorKeyMutex); 74 } 75 pthread_setspecific(gEGLErrorKey, (void*)error); 76 return returnValue; 77} 78 79static GLint getError() { 80 if (ggl_unlikely(gEGLErrorKey == -1)) 81 return EGL_SUCCESS; 82 GLint error = (GLint)pthread_getspecific(gEGLErrorKey); 83 pthread_setspecific(gEGLErrorKey, (void*)EGL_SUCCESS); 84 return error; 85} 86 87// ---------------------------------------------------------------------------- 88 89struct egl_display_t 90{ 91 egl_display_t() : type(0), initialized(0) { } 92 93 static egl_display_t& get_display(EGLDisplay dpy); 94 95 static EGLBoolean is_valid(EGLDisplay dpy) { 96 return ((uintptr_t(dpy)-1U) >= NUM_DISPLAYS) ? EGL_FALSE : EGL_TRUE; 97 } 98 99 NativeDisplayType type; 100 volatile int32_t initialized; 101}; 102 103static egl_display_t gDisplays[NUM_DISPLAYS]; 104 105egl_display_t& egl_display_t::get_display(EGLDisplay dpy) { 106 return gDisplays[uintptr_t(dpy)-1U]; 107} 108 109struct egl_context_t { 110 enum { 111 IS_CURRENT = 0x00010000, 112 NEVER_CURRENT = 0x00020000 113 }; 114 uint32_t flags; 115 EGLDisplay dpy; 116 EGLConfig config; 117 EGLSurface read; 118 EGLSurface draw; 119 120 static inline egl_context_t* context(EGLContext ctx) { 121 ogles_context_t* const gl = static_cast<ogles_context_t*>(ctx); 122 return static_cast<egl_context_t*>(gl->rasterizer.base); 123 } 124}; 125 126// ---------------------------------------------------------------------------- 127 128struct egl_surface_t 129{ 130 enum { 131 PAGE_FLIP = 0x00000001, 132 MAGIC = 0x31415265 133 }; 134 135 uint32_t magic; 136 EGLDisplay dpy; 137 EGLConfig config; 138 EGLContext ctx; 139 140 egl_surface_t(EGLDisplay dpy, EGLConfig config, int32_t depthFormat); 141 virtual ~egl_surface_t(); 142 virtual bool isValid() const = 0; 143 144 virtual EGLBoolean bindDrawSurface(ogles_context_t* gl) = 0; 145 virtual EGLBoolean bindReadSurface(ogles_context_t* gl) = 0; 146 virtual EGLint getWidth() const = 0; 147 virtual EGLint getHeight() const = 0; 148 virtual void* getBits() const = 0; 149 150 virtual EGLint getHorizontalResolution() const; 151 virtual EGLint getVerticalResolution() const; 152 virtual EGLint getRefreshRate() const; 153 virtual EGLint getSwapBehavior() const; 154 virtual EGLBoolean swapBuffers(); 155protected: 156 GGLSurface depth; 157}; 158 159egl_surface_t::egl_surface_t(EGLDisplay dpy, 160 EGLConfig config, 161 int32_t depthFormat) 162 : magic(MAGIC), dpy(dpy), config(config), ctx(0) 163{ 164 depth.version = sizeof(GGLSurface); 165 depth.data = 0; 166 depth.format = depthFormat; 167} 168egl_surface_t::~egl_surface_t() 169{ 170 magic = 0; 171 free(depth.data); 172} 173EGLBoolean egl_surface_t::swapBuffers() { 174 return EGL_FALSE; 175} 176EGLint egl_surface_t::getHorizontalResolution() const { 177 return (0 * EGL_DISPLAY_SCALING) * (1.0f / 25.4f); 178} 179EGLint egl_surface_t::getVerticalResolution() const { 180 return (0 * EGL_DISPLAY_SCALING) * (1.0f / 25.4f); 181} 182EGLint egl_surface_t::getRefreshRate() const { 183 return (60 * EGL_DISPLAY_SCALING); 184} 185EGLint egl_surface_t::getSwapBehavior() const { 186 return EGL_BUFFER_PRESERVED; 187} 188 189// ---------------------------------------------------------------------------- 190 191struct egl_window_surface_t : public egl_surface_t 192{ 193 egl_window_surface_t( 194 EGLDisplay dpy, EGLConfig config, 195 int32_t depthFormat, 196 egl_native_window_t* window); 197 198 ~egl_window_surface_t(); 199 200 virtual bool isValid() const { return nativeWindow->magic == 0x600913; } 201 virtual EGLBoolean swapBuffers(); 202 virtual EGLBoolean bindDrawSurface(ogles_context_t* gl); 203 virtual EGLBoolean bindReadSurface(ogles_context_t* gl); 204 virtual EGLint getWidth() const { return nativeWindow->width; } 205 virtual EGLint getHeight() const { return nativeWindow->height; } 206 virtual void* getBits() const; 207 virtual EGLint getHorizontalResolution() const; 208 virtual EGLint getVerticalResolution() const; 209 virtual EGLint getRefreshRate() const; 210 virtual EGLint getSwapBehavior() const; 211private: 212 egl_native_window_t* nativeWindow; 213}; 214 215egl_window_surface_t::egl_window_surface_t(EGLDisplay dpy, 216 EGLConfig config, 217 int32_t depthFormat, 218 egl_native_window_t* window) 219 : egl_surface_t(dpy, config, depthFormat), nativeWindow(window) 220{ 221 if (depthFormat) { 222 depth.width = window->width; 223 depth.height = window->height; 224 depth.stride = depth.width; // use the width here 225 depth.data = (GGLubyte*)malloc(depth.stride*depth.height*2); 226 if (depth.data == 0) { 227 setError(EGL_BAD_ALLOC, EGL_NO_SURFACE); 228 return; 229 } 230 } 231 nativeWindow->incRef(nativeWindow); 232} 233egl_window_surface_t::~egl_window_surface_t() { 234 nativeWindow->decRef(nativeWindow); 235} 236 237EGLBoolean egl_window_surface_t::swapBuffers() 238{ 239 uint32_t flags = nativeWindow->swapBuffers(nativeWindow); 240 if (flags & EGL_NATIVES_FLAG_SIZE_CHANGED) { 241 // TODO: we probably should reset the swap rect here 242 // if the window size has changed 243 if (depth.data) { 244 free(depth.data); 245 depth.width = nativeWindow->width; 246 depth.height = nativeWindow->height; 247 depth.stride = nativeWindow->stride; 248 depth.data = (GGLubyte*)malloc(depth.stride*depth.height*2); 249 if (depth.data == 0) { 250 setError(EGL_BAD_ALLOC, EGL_NO_SURFACE); 251 return EGL_FALSE; 252 } 253 } 254 } 255 return EGL_TRUE; 256} 257 258EGLBoolean egl_window_surface_t::bindDrawSurface(ogles_context_t* gl) 259{ 260 GGLSurface buffer; 261 buffer.version = sizeof(GGLSurface); 262 buffer.width = nativeWindow->width; 263 buffer.height = nativeWindow->height; 264 buffer.stride = nativeWindow->stride; 265 buffer.data = (GGLubyte*)nativeWindow->base + nativeWindow->offset; 266 buffer.format = nativeWindow->format; 267 gl->rasterizer.procs.colorBuffer(gl, &buffer); 268 if (depth.data != gl->rasterizer.state.buffers.depth.data) 269 gl->rasterizer.procs.depthBuffer(gl, &depth); 270 return EGL_TRUE; 271} 272EGLBoolean egl_window_surface_t::bindReadSurface(ogles_context_t* gl) 273{ 274 GGLSurface buffer; 275 buffer.version = sizeof(GGLSurface); 276 buffer.width = nativeWindow->width; 277 buffer.height = nativeWindow->height; 278 buffer.stride = nativeWindow->stride; 279 buffer.data = (GGLubyte*)nativeWindow->base + nativeWindow->offset; 280 buffer.format = nativeWindow->format; 281 gl->rasterizer.procs.readBuffer(gl, &buffer); 282 return EGL_TRUE; 283} 284void* egl_window_surface_t::getBits() const { 285 return (GGLubyte*)nativeWindow->base + nativeWindow->offset; 286} 287EGLint egl_window_surface_t::getHorizontalResolution() const { 288 return (nativeWindow->xdpi * EGL_DISPLAY_SCALING) * (1.0f / 25.4f); 289} 290EGLint egl_window_surface_t::getVerticalResolution() const { 291 return (nativeWindow->ydpi * EGL_DISPLAY_SCALING) * (1.0f / 25.4f); 292} 293EGLint egl_window_surface_t::getRefreshRate() const { 294 return (nativeWindow->fps * EGL_DISPLAY_SCALING); 295} 296EGLint egl_window_surface_t::getSwapBehavior() const { 297 uint32_t flags = nativeWindow->flags; 298 if (flags & EGL_NATIVES_FLAG_DESTROY_BACKBUFFER) 299 return EGL_BUFFER_DESTROYED; 300 return EGL_BUFFER_PRESERVED; 301} 302 303// ---------------------------------------------------------------------------- 304 305struct egl_pixmap_surface_t : public egl_surface_t 306{ 307 egl_pixmap_surface_t( 308 EGLDisplay dpy, EGLConfig config, 309 int32_t depthFormat, 310 egl_native_pixmap_t const * pixmap); 311 312 virtual ~egl_pixmap_surface_t() { } 313 314 virtual bool isValid() const { return nativePixmap.version == sizeof(egl_native_pixmap_t); } 315 virtual EGLBoolean bindDrawSurface(ogles_context_t* gl); 316 virtual EGLBoolean bindReadSurface(ogles_context_t* gl); 317 virtual EGLint getWidth() const { return nativePixmap.width; } 318 virtual EGLint getHeight() const { return nativePixmap.height; } 319 virtual void* getBits() const { return nativePixmap.data; } 320private: 321 egl_native_pixmap_t nativePixmap; 322}; 323 324egl_pixmap_surface_t::egl_pixmap_surface_t(EGLDisplay dpy, 325 EGLConfig config, 326 int32_t depthFormat, 327 egl_native_pixmap_t const * pixmap) 328 : egl_surface_t(dpy, config, depthFormat), nativePixmap(*pixmap) 329{ 330 if (depthFormat) { 331 depth.width = pixmap->width; 332 depth.height = pixmap->height; 333 depth.stride = depth.width; // use the width here 334 depth.data = (GGLubyte*)malloc(depth.stride*depth.height*2); 335 if (depth.data == 0) { 336 setError(EGL_BAD_ALLOC, EGL_NO_SURFACE); 337 return; 338 } 339 } 340} 341EGLBoolean egl_pixmap_surface_t::bindDrawSurface(ogles_context_t* gl) 342{ 343 GGLSurface buffer; 344 buffer.version = sizeof(GGLSurface); 345 buffer.width = nativePixmap.width; 346 buffer.height = nativePixmap.height; 347 buffer.stride = nativePixmap.stride; 348 buffer.data = nativePixmap.data; 349 buffer.format = nativePixmap.format; 350 351 gl->rasterizer.procs.colorBuffer(gl, &buffer); 352 if (depth.data != gl->rasterizer.state.buffers.depth.data) 353 gl->rasterizer.procs.depthBuffer(gl, &depth); 354 return EGL_TRUE; 355} 356EGLBoolean egl_pixmap_surface_t::bindReadSurface(ogles_context_t* gl) 357{ 358 GGLSurface buffer; 359 buffer.version = sizeof(GGLSurface); 360 buffer.width = nativePixmap.width; 361 buffer.height = nativePixmap.height; 362 buffer.stride = nativePixmap.stride; 363 buffer.data = nativePixmap.data; 364 buffer.format = nativePixmap.format; 365 gl->rasterizer.procs.readBuffer(gl, &buffer); 366 return EGL_TRUE; 367} 368 369// ---------------------------------------------------------------------------- 370 371struct egl_pbuffer_surface_t : public egl_surface_t 372{ 373 egl_pbuffer_surface_t( 374 EGLDisplay dpy, EGLConfig config, int32_t depthFormat, 375 int32_t w, int32_t h, int32_t f); 376 377 virtual ~egl_pbuffer_surface_t(); 378 379 virtual bool isValid() const { return pbuffer.data != 0; } 380 virtual EGLBoolean bindDrawSurface(ogles_context_t* gl); 381 virtual EGLBoolean bindReadSurface(ogles_context_t* gl); 382 virtual EGLint getWidth() const { return pbuffer.width; } 383 virtual EGLint getHeight() const { return pbuffer.height; } 384 virtual void* getBits() const { return pbuffer.data; } 385private: 386 GGLSurface pbuffer; 387}; 388 389egl_pbuffer_surface_t::egl_pbuffer_surface_t(EGLDisplay dpy, 390 EGLConfig config, int32_t depthFormat, 391 int32_t w, int32_t h, int32_t f) 392 : egl_surface_t(dpy, config, depthFormat) 393{ 394 size_t size = w*h; 395 switch (f) { 396 case GGL_PIXEL_FORMAT_A_8: size *= 1; break; 397 case GGL_PIXEL_FORMAT_RGB_565: size *= 2; break; 398 case GGL_PIXEL_FORMAT_RGBA_8888: size *= 4; break; 399 default: 400 LOGE("incompatible pixel format for pbuffer (format=%d)", f); 401 pbuffer.data = 0; 402 break; 403 } 404 pbuffer.version = sizeof(GGLSurface); 405 pbuffer.width = w; 406 pbuffer.height = h; 407 pbuffer.stride = w; 408 pbuffer.data = (GGLubyte*)malloc(size); 409 pbuffer.format = f; 410 411 if (depthFormat) { 412 depth.width = pbuffer.width; 413 depth.height = pbuffer.height; 414 depth.stride = depth.width; // use the width here 415 depth.data = (GGLubyte*)malloc(depth.stride*depth.height*2); 416 if (depth.data == 0) { 417 setError(EGL_BAD_ALLOC, EGL_NO_SURFACE); 418 return; 419 } 420 } 421} 422egl_pbuffer_surface_t::~egl_pbuffer_surface_t() { 423 free(pbuffer.data); 424} 425EGLBoolean egl_pbuffer_surface_t::bindDrawSurface(ogles_context_t* gl) 426{ 427 gl->rasterizer.procs.colorBuffer(gl, &pbuffer); 428 if (depth.data != gl->rasterizer.state.buffers.depth.data) 429 gl->rasterizer.procs.depthBuffer(gl, &depth); 430 return EGL_TRUE; 431} 432EGLBoolean egl_pbuffer_surface_t::bindReadSurface(ogles_context_t* gl) 433{ 434 gl->rasterizer.procs.readBuffer(gl, &pbuffer); 435 return EGL_TRUE; 436} 437 438// ---------------------------------------------------------------------------- 439 440struct config_pair_t { 441 GLint key; 442 GLint value; 443}; 444 445struct configs_t { 446 const config_pair_t* array; 447 int size; 448}; 449 450struct config_management_t { 451 GLint key; 452 bool (*match)(GLint reqValue, GLint confValue); 453 static bool atLeast(GLint reqValue, GLint confValue) { 454 return (reqValue == EGL_DONT_CARE) || (confValue >= reqValue); 455 } 456 static bool exact(GLint reqValue, GLint confValue) { 457 return (reqValue == EGL_DONT_CARE) || (confValue == reqValue); 458 } 459 static bool mask(GLint reqValue, GLint confValue) { 460 return (confValue & reqValue) == reqValue; 461 } 462}; 463 464// ---------------------------------------------------------------------------- 465 466static char const * const gVendorString = "Google Inc."; 467static char const * const gVersionString = "1.2 Android Driver"; 468static char const * const gClientApiString = "OpenGL ES"; 469static char const * const gExtensionsString = ""; 470 471// ---------------------------------------------------------------------------- 472 473struct extention_map_t { 474 const char * const name; 475 __eglMustCastToProperFunctionPointerType address; 476}; 477 478static const extention_map_t gExtentionMap[] = { 479 { "glDrawTexsOES", (void(*)())&glDrawTexsOES }, 480 { "glDrawTexiOES", (void(*)())&glDrawTexiOES }, 481 { "glDrawTexfOES", (void(*)())&glDrawTexfOES }, 482 { "glDrawTexxOES", (void(*)())&glDrawTexxOES }, 483 { "glDrawTexsvOES", (void(*)())&glDrawTexsvOES }, 484 { "glDrawTexivOES", (void(*)())&glDrawTexivOES }, 485 { "glDrawTexfvOES", (void(*)())&glDrawTexfvOES }, 486 { "glDrawTexxvOES", (void(*)())&glDrawTexxvOES }, 487 { "glQueryMatrixxOES", (void(*)())&glQueryMatrixxOES }, 488 { "glClipPlanef", (void(*)())&glClipPlanef }, 489 { "glClipPlanex", (void(*)())&glClipPlanex }, 490 { "glBindBuffer", (void(*)())&glBindBuffer }, 491 { "glBufferData", (void(*)())&glBufferData }, 492 { "glBufferSubData", (void(*)())&glBufferSubData }, 493 { "glDeleteBuffers", (void(*)())&glDeleteBuffers }, 494 { "glGenBuffers", (void(*)())&glGenBuffers }, 495}; 496 497/* 498 * In the lists below, attributes names MUST be sorted. 499 * Additionally, all configs must be sorted according to 500 * the EGL specification. 501 */ 502 503static config_pair_t const config_base_attribute_list[] = { 504 { EGL_STENCIL_SIZE, 0 }, 505 { EGL_CONFIG_CAVEAT, EGL_SLOW_CONFIG }, 506 { EGL_LEVEL, 0 }, 507 { EGL_MAX_PBUFFER_HEIGHT, GGL_MAX_VIEWPORT_DIMS }, 508 { EGL_MAX_PBUFFER_PIXELS, 509 GGL_MAX_VIEWPORT_DIMS*GGL_MAX_VIEWPORT_DIMS }, 510 { EGL_MAX_PBUFFER_WIDTH, GGL_MAX_VIEWPORT_DIMS }, 511 { EGL_NATIVE_RENDERABLE, EGL_TRUE }, 512 { EGL_NATIVE_VISUAL_ID, 0 }, 513 { EGL_NATIVE_VISUAL_TYPE, GGL_PIXEL_FORMAT_RGB_565 }, 514 { EGL_SAMPLES, 0 }, 515 { EGL_SAMPLE_BUFFERS, 0 }, 516 { EGL_TRANSPARENT_TYPE, EGL_NONE }, 517 { EGL_TRANSPARENT_BLUE_VALUE, 0 }, 518 { EGL_TRANSPARENT_GREEN_VALUE, 0 }, 519 { EGL_TRANSPARENT_RED_VALUE, 0 }, 520 { EGL_BIND_TO_TEXTURE_RGBA, EGL_FALSE }, 521 { EGL_BIND_TO_TEXTURE_RGB, EGL_FALSE }, 522 { EGL_MIN_SWAP_INTERVAL, 1 }, 523 { EGL_MAX_SWAP_INTERVAL, 4 }, 524}; 525 526// These configs can override the base attribute list 527// NOTE: when adding a config here, don't forget to update eglCreate*Surface() 528 529static config_pair_t const config_0_attribute_list[] = { 530 { EGL_BUFFER_SIZE, 16 }, 531 { EGL_ALPHA_SIZE, 0 }, 532 { EGL_BLUE_SIZE, 5 }, 533 { EGL_GREEN_SIZE, 6 }, 534 { EGL_RED_SIZE, 5 }, 535 { EGL_DEPTH_SIZE, 0 }, 536 { EGL_CONFIG_ID, 0 }, 537 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 538}; 539 540static config_pair_t const config_1_attribute_list[] = { 541 { EGL_BUFFER_SIZE, 16 }, 542 { EGL_ALPHA_SIZE, 0 }, 543 { EGL_BLUE_SIZE, 5 }, 544 { EGL_GREEN_SIZE, 6 }, 545 { EGL_RED_SIZE, 5 }, 546 { EGL_DEPTH_SIZE, 16 }, 547 { EGL_CONFIG_ID, 1 }, 548 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 549}; 550 551static config_pair_t const config_2_attribute_list[] = { 552 { EGL_BUFFER_SIZE, 32 }, 553 { EGL_ALPHA_SIZE, 8 }, 554 { EGL_BLUE_SIZE, 8 }, 555 { EGL_GREEN_SIZE, 8 }, 556 { EGL_RED_SIZE, 8 }, 557 { EGL_DEPTH_SIZE, 0 }, 558 { EGL_CONFIG_ID, 2 }, 559 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 560}; 561 562static config_pair_t const config_3_attribute_list[] = { 563 { EGL_BUFFER_SIZE, 32 }, 564 { EGL_ALPHA_SIZE, 8 }, 565 { EGL_BLUE_SIZE, 8 }, 566 { EGL_GREEN_SIZE, 8 }, 567 { EGL_RED_SIZE, 8 }, 568 { EGL_DEPTH_SIZE, 16 }, 569 { EGL_CONFIG_ID, 3 }, 570 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 571}; 572 573static config_pair_t const config_4_attribute_list[] = { 574 { EGL_BUFFER_SIZE, 8 }, 575 { EGL_ALPHA_SIZE, 8 }, 576 { EGL_BLUE_SIZE, 0 }, 577 { EGL_GREEN_SIZE, 0 }, 578 { EGL_RED_SIZE, 0 }, 579 { EGL_DEPTH_SIZE, 0 }, 580 { EGL_CONFIG_ID, 4 }, 581 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 582}; 583 584static config_pair_t const config_5_attribute_list[] = { 585 { EGL_BUFFER_SIZE, 8 }, 586 { EGL_ALPHA_SIZE, 8 }, 587 { EGL_BLUE_SIZE, 0 }, 588 { EGL_GREEN_SIZE, 0 }, 589 { EGL_RED_SIZE, 0 }, 590 { EGL_DEPTH_SIZE, 16 }, 591 { EGL_CONFIG_ID, 5 }, 592 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 593}; 594 595static configs_t const gConfigs[] = { 596 { config_0_attribute_list, NELEM(config_0_attribute_list) }, 597 { config_1_attribute_list, NELEM(config_1_attribute_list) }, 598 { config_2_attribute_list, NELEM(config_2_attribute_list) }, 599 { config_3_attribute_list, NELEM(config_3_attribute_list) }, 600 { config_4_attribute_list, NELEM(config_4_attribute_list) }, 601 { config_5_attribute_list, NELEM(config_5_attribute_list) }, 602}; 603 604static config_management_t const gConfigManagement[] = { 605 { EGL_BUFFER_SIZE, config_management_t::atLeast }, 606 { EGL_ALPHA_SIZE, config_management_t::atLeast }, 607 { EGL_BLUE_SIZE, config_management_t::atLeast }, 608 { EGL_GREEN_SIZE, config_management_t::atLeast }, 609 { EGL_RED_SIZE, config_management_t::atLeast }, 610 { EGL_DEPTH_SIZE, config_management_t::atLeast }, 611 { EGL_STENCIL_SIZE, config_management_t::atLeast }, 612 { EGL_CONFIG_CAVEAT, config_management_t::exact }, 613 { EGL_CONFIG_ID, config_management_t::exact }, 614 { EGL_LEVEL, config_management_t::exact }, 615 { EGL_MAX_PBUFFER_HEIGHT, config_management_t::exact }, 616 { EGL_MAX_PBUFFER_PIXELS, config_management_t::exact }, 617 { EGL_MAX_PBUFFER_WIDTH, config_management_t::exact }, 618 { EGL_NATIVE_RENDERABLE, config_management_t::exact }, 619 { EGL_NATIVE_VISUAL_ID, config_management_t::exact }, 620 { EGL_NATIVE_VISUAL_TYPE, config_management_t::exact }, 621 { EGL_SAMPLES, config_management_t::exact }, 622 { EGL_SAMPLE_BUFFERS, config_management_t::exact }, 623 { EGL_SURFACE_TYPE, config_management_t::mask }, 624 { EGL_TRANSPARENT_TYPE, config_management_t::exact }, 625 { EGL_TRANSPARENT_BLUE_VALUE, config_management_t::exact }, 626 { EGL_TRANSPARENT_GREEN_VALUE, config_management_t::exact }, 627 { EGL_TRANSPARENT_RED_VALUE, config_management_t::exact }, 628 { EGL_BIND_TO_TEXTURE_RGBA, config_management_t::exact }, 629 { EGL_BIND_TO_TEXTURE_RGB, config_management_t::exact }, 630 { EGL_MIN_SWAP_INTERVAL, config_management_t::exact }, 631 { EGL_MAX_SWAP_INTERVAL, config_management_t::exact }, 632}; 633 634static config_pair_t const config_defaults[] = { 635 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT }, 636}; 637 638// ---------------------------------------------------------------------------- 639 640template<typename T> 641static int binarySearch(T const sortedArray[], int first, int last, EGLint key) 642{ 643 while (first <= last) { 644 int mid = (first + last) / 2; 645 if (key > sortedArray[mid].key) { 646 first = mid + 1; 647 } else if (key < sortedArray[mid].key) { 648 last = mid - 1; 649 } else { 650 return mid; 651 } 652 } 653 return -1; 654} 655 656static int isAttributeMatching(int i, EGLint attr, EGLint val) 657{ 658 // look for the attribute in all of our configs 659 config_pair_t const* configFound = gConfigs[i].array; 660 int index = binarySearch<config_pair_t>( 661 gConfigs[i].array, 662 0, gConfigs[i].size-1, 663 attr); 664 if (index < 0) { 665 configFound = config_base_attribute_list; 666 index = binarySearch<config_pair_t>( 667 config_base_attribute_list, 668 0, NELEM(config_base_attribute_list)-1, 669 attr); 670 } 671 if (index >= 0) { 672 // attribute found, check if this config could match 673 int cfgMgtIndex = binarySearch<config_management_t>( 674 gConfigManagement, 675 0, NELEM(gConfigManagement)-1, 676 attr); 677 if (index >= 0) { 678 bool match = gConfigManagement[cfgMgtIndex].match( 679 val, configFound[index].value); 680 if (match) { 681 // this config matches 682 return 1; 683 } 684 } else { 685 // attribute not found. this should NEVER happen. 686 } 687 } else { 688 // error, this attribute doesn't exist 689 } 690 return 0; 691} 692 693static int makeCurrent(ogles_context_t* gl) 694{ 695 ogles_context_t* current = (ogles_context_t*)getGlThreadSpecific(); 696 if (gl) { 697 egl_context_t* c = egl_context_t::context(gl); 698 if (c->flags & egl_context_t::IS_CURRENT) { 699 if (current != gl) { 700 // it is an error to set a context current, if it's already 701 // current to another thread 702 return -1; 703 } 704 } else { 705 if (current) { 706 // mark the current context as not current, and flush 707 glFlush(); 708 egl_context_t::context(current)->flags &= ~egl_context_t::IS_CURRENT; 709 } 710 } 711 if (!(c->flags & egl_context_t::IS_CURRENT)) { 712 // The context is not current, make it current! 713 setGlThreadSpecific(gl); 714 c->flags |= egl_context_t::IS_CURRENT; 715 } 716 } else { 717 if (current) { 718 // mark the current context as not current, and flush 719 glFlush(); 720 egl_context_t::context(current)->flags &= ~egl_context_t::IS_CURRENT; 721 } 722 // this thread has no context attached to it 723 setGlThreadSpecific(0); 724 } 725 return 0; 726} 727 728static EGLBoolean getConfigAttrib(EGLDisplay dpy, EGLConfig config, 729 EGLint attribute, EGLint *value) 730{ 731 size_t numConfigs = NELEM(gConfigs); 732 int index = (int)config; 733 if (uint32_t(index) >= numConfigs) 734 return setError(EGL_BAD_CONFIG, EGL_FALSE); 735 736 int attrIndex; 737 attrIndex = binarySearch<config_pair_t>( 738 gConfigs[index].array, 739 0, gConfigs[index].size-1, 740 attribute); 741 if (attrIndex>=0) { 742 *value = gConfigs[index].array[attrIndex].value; 743 return EGL_TRUE; 744 } 745 746 attrIndex = binarySearch<config_pair_t>( 747 config_base_attribute_list, 748 0, NELEM(config_base_attribute_list)-1, 749 attribute); 750 if (attrIndex>=0) { 751 *value = config_base_attribute_list[attrIndex].value; 752 return EGL_TRUE; 753 } 754 return setError(EGL_BAD_ATTRIBUTE, EGL_FALSE); 755} 756 757static EGLSurface createWindowSurface(EGLDisplay dpy, EGLConfig config, 758 NativeWindowType window, const EGLint *attrib_list) 759{ 760 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 761 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 762 if (window == 0) 763 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 764 765 EGLint surfaceType; 766 if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE) 767 return EGL_FALSE; 768 769 if (!(surfaceType & EGL_WINDOW_BIT)) 770 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 771 772 EGLint configID; 773 if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE) 774 return EGL_FALSE; 775 776 int32_t depthFormat; 777 int32_t pixelFormat; 778 switch(configID) { 779 case 0: 780 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 781 depthFormat = 0; 782 break; 783 case 1: 784 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 785 depthFormat = GGL_PIXEL_FORMAT_Z_16; 786 break; 787 case 2: 788 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 789 depthFormat = 0; 790 break; 791 case 3: 792 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 793 depthFormat = GGL_PIXEL_FORMAT_Z_16; 794 break; 795 case 4: 796 pixelFormat = GGL_PIXEL_FORMAT_A_8; 797 depthFormat = 0; 798 break; 799 case 5: 800 pixelFormat = GGL_PIXEL_FORMAT_A_8; 801 depthFormat = GGL_PIXEL_FORMAT_Z_16; 802 break; 803 default: 804 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 805 } 806 807 // FIXME: we don't have access to the pixelFormat here just yet. 808 // (it's possible that the surface is not fully initialized) 809 // maybe this should be done after the page-flip 810 //if (EGLint(info.format) != pixelFormat) 811 // return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 812 813 egl_surface_t* surface = 814 new egl_window_surface_t(dpy, config, depthFormat, 815 static_cast<egl_native_window_t*>(window)); 816 817 if (!surface->isValid()) { 818 // there was a problem in the ctor, the error 819 // flag has been set. 820 delete surface; 821 surface = 0; 822 } 823 return surface; 824} 825 826static EGLSurface createPixmapSurface(EGLDisplay dpy, EGLConfig config, 827 NativePixmapType pixmap, const EGLint *attrib_list) 828{ 829 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 830 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 831 if (pixmap == 0) 832 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 833 834 EGLint surfaceType; 835 if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE) 836 return EGL_FALSE; 837 838 if (!(surfaceType & EGL_PIXMAP_BIT)) 839 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 840 841 EGLint configID; 842 if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE) 843 return EGL_FALSE; 844 845 int32_t depthFormat; 846 int32_t pixelFormat; 847 switch(configID) { 848 case 0: 849 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 850 depthFormat = 0; 851 break; 852 case 1: 853 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 854 depthFormat = GGL_PIXEL_FORMAT_Z_16; 855 break; 856 case 2: 857 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 858 depthFormat = 0; 859 break; 860 case 3: 861 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 862 depthFormat = GGL_PIXEL_FORMAT_Z_16; 863 break; 864 case 4: 865 pixelFormat = GGL_PIXEL_FORMAT_A_8; 866 depthFormat = 0; 867 break; 868 case 5: 869 pixelFormat = GGL_PIXEL_FORMAT_A_8; 870 depthFormat = GGL_PIXEL_FORMAT_Z_16; 871 break; 872 default: 873 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 874 } 875 876 if (pixmap->format != pixelFormat) 877 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 878 879 egl_surface_t* surface = 880 new egl_pixmap_surface_t(dpy, config, depthFormat, 881 static_cast<egl_native_pixmap_t*>(pixmap)); 882 883 if (!surface->isValid()) { 884 // there was a problem in the ctor, the error 885 // flag has been set. 886 delete surface; 887 surface = 0; 888 } 889 return surface; 890} 891 892static EGLSurface createPbufferSurface(EGLDisplay dpy, EGLConfig config, 893 const EGLint *attrib_list) 894{ 895 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 896 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 897 898 EGLint surfaceType; 899 if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE) 900 return EGL_FALSE; 901 902 if (!(surfaceType & EGL_PBUFFER_BIT)) 903 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 904 905 EGLint configID; 906 if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE) 907 return EGL_FALSE; 908 909 int32_t depthFormat; 910 int32_t pixelFormat; 911 switch(configID) { 912 case 0: 913 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 914 depthFormat = 0; 915 break; 916 case 1: 917 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 918 depthFormat = GGL_PIXEL_FORMAT_Z_16; 919 break; 920 case 2: 921 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 922 depthFormat = 0; 923 break; 924 case 3: 925 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 926 depthFormat = GGL_PIXEL_FORMAT_Z_16; 927 break; 928 case 4: 929 pixelFormat = GGL_PIXEL_FORMAT_A_8; 930 depthFormat = 0; 931 break; 932 case 5: 933 pixelFormat = GGL_PIXEL_FORMAT_A_8; 934 depthFormat = GGL_PIXEL_FORMAT_Z_16; 935 break; 936 default: 937 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 938 } 939 940 int32_t w = 0; 941 int32_t h = 0; 942 while (attrib_list[0]) { 943 if (attrib_list[0] == EGL_WIDTH) w = attrib_list[1]; 944 if (attrib_list[0] == EGL_HEIGHT) h = attrib_list[1]; 945 attrib_list+=2; 946 } 947 948 egl_surface_t* surface = 949 new egl_pbuffer_surface_t(dpy, config, depthFormat, w, h, pixelFormat); 950 951 if (!surface->isValid()) { 952 // there was a problem in the ctor, the error 953 // flag has been set. 954 delete surface; 955 surface = 0; 956 } 957 return surface; 958} 959 960// ---------------------------------------------------------------------------- 961}; // namespace android 962// ---------------------------------------------------------------------------- 963 964using namespace android; 965 966// ---------------------------------------------------------------------------- 967// Initialization 968// ---------------------------------------------------------------------------- 969 970EGLDisplay eglGetDisplay(NativeDisplayType display) 971{ 972#ifndef HAVE_ANDROID_OS 973 // this just needs to be done once 974 if (gGLKey == -1) { 975 pthread_mutex_lock(&gInitMutex); 976 if (gGLKey == -1) 977 pthread_key_create(&gGLKey, NULL); 978 pthread_mutex_unlock(&gInitMutex); 979 } 980#endif 981 if (display == EGL_DEFAULT_DISPLAY) { 982 EGLDisplay dpy = (EGLDisplay)1; 983 egl_display_t& d = egl_display_t::get_display(dpy); 984 d.type = display; 985 return dpy; 986 } 987 return EGL_NO_DISPLAY; 988} 989 990EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor) 991{ 992 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 993 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 994 995 EGLBoolean res = EGL_TRUE; 996 egl_display_t& d = egl_display_t::get_display(dpy); 997 998 if (android_atomic_inc(&d.initialized) == 0) { 999 // initialize stuff here if needed 1000 //pthread_mutex_lock(&gInitMutex); 1001 //pthread_mutex_unlock(&gInitMutex); 1002 } 1003 1004 if (res == EGL_TRUE) { 1005 if (major != NULL) *major = 1; 1006 if (minor != NULL) *minor = 2; 1007 } 1008 return res; 1009} 1010 1011EGLBoolean eglTerminate(EGLDisplay dpy) 1012{ 1013 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1014 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1015 1016 EGLBoolean res = EGL_TRUE; 1017 egl_display_t& d = egl_display_t::get_display(dpy); 1018 if (android_atomic_dec(&d.initialized) == 1) { 1019 // TODO: destroy all resources (surfaces, contexts, etc...) 1020 //pthread_mutex_lock(&gInitMutex); 1021 //pthread_mutex_unlock(&gInitMutex); 1022 } 1023 return res; 1024} 1025 1026// ---------------------------------------------------------------------------- 1027// configuration 1028// ---------------------------------------------------------------------------- 1029 1030EGLBoolean eglGetConfigs( EGLDisplay dpy, 1031 EGLConfig *configs, 1032 EGLint config_size, EGLint *num_config) 1033{ 1034 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1035 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1036 1037 GLint numConfigs = NELEM(gConfigs); 1038 if (!configs) { 1039 *num_config = numConfigs; 1040 return EGL_TRUE; 1041 } 1042 GLint i; 1043 for (i=0 ; i<numConfigs && i<config_size ; i++) { 1044 *configs++ = (EGLConfig)i; 1045 } 1046 *num_config = i; 1047 return EGL_TRUE; 1048} 1049 1050EGLBoolean eglChooseConfig( EGLDisplay dpy, const EGLint *attrib_list, 1051 EGLConfig *configs, EGLint config_size, 1052 EGLint *num_config) 1053{ 1054 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1055 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1056 1057 if (ggl_unlikely(configs==0 || attrib_list==0)) { 1058 *num_config = 0; 1059 return EGL_TRUE; 1060 } 1061 1062 int numAttributes = 0; 1063 int numConfigs = NELEM(gConfigs); 1064 uint32_t possibleMatch = (1<<numConfigs)-1; 1065 while(possibleMatch && *attrib_list != EGL_NONE) { 1066 numAttributes++; 1067 EGLint attr = *attrib_list++; 1068 EGLint val = *attrib_list++; 1069 for (int i=0 ; i<numConfigs ; i++) { 1070 if (!(possibleMatch & (1<<i))) 1071 continue; 1072 if (isAttributeMatching(i, attr, val) == 0) { 1073 possibleMatch &= ~(1<<i); 1074 } 1075 } 1076 } 1077 1078 // now, handle the attributes which have a useful default value 1079 for (size_t j=0 ; j<NELEM(config_defaults) ; j++) { 1080 // see if this attribute was specified, if not apply its 1081 // default value 1082 if (binarySearch<config_pair_t>( 1083 (config_pair_t const*)attrib_list, 1084 0, numAttributes, 1085 config_defaults[j].key) < 0) 1086 { 1087 for (int i=0 ; i<numConfigs ; i++) { 1088 if (!(possibleMatch & (1<<i))) 1089 continue; 1090 if (isAttributeMatching(i, 1091 config_defaults[j].key, 1092 config_defaults[j].value) == 0) 1093 { 1094 possibleMatch &= ~(1<<i); 1095 } 1096 } 1097 } 1098 } 1099 1100 // return the configurations found 1101 int n=0; 1102 if (possibleMatch) { 1103 for (int i=0 ; config_size && i<numConfigs ; i++) { 1104 if (possibleMatch & (1<<i)) { 1105 *configs++ = (EGLConfig)i; 1106 config_size--; 1107 n++; 1108 } 1109 } 1110 } 1111 *num_config = n; 1112 return EGL_TRUE; 1113} 1114 1115EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config, 1116 EGLint attribute, EGLint *value) 1117{ 1118 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1119 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1120 1121 return getConfigAttrib(dpy, config, attribute, value); 1122} 1123 1124// ---------------------------------------------------------------------------- 1125// surfaces 1126// ---------------------------------------------------------------------------- 1127 1128EGLSurface eglCreateWindowSurface( EGLDisplay dpy, EGLConfig config, 1129 NativeWindowType window, 1130 const EGLint *attrib_list) 1131{ 1132 return createWindowSurface(dpy, config, window, attrib_list); 1133} 1134 1135EGLSurface eglCreatePixmapSurface( EGLDisplay dpy, EGLConfig config, 1136 NativePixmapType pixmap, 1137 const EGLint *attrib_list) 1138{ 1139 return createPixmapSurface(dpy, config, pixmap, attrib_list); 1140} 1141 1142EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config, 1143 const EGLint *attrib_list) 1144{ 1145 return createPbufferSurface(dpy, config, attrib_list); 1146} 1147 1148EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface eglSurface) 1149{ 1150 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1151 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1152 if (eglSurface != EGL_NO_SURFACE) { 1153 egl_surface_t* surface( static_cast<egl_surface_t*>(eglSurface) ); 1154 if (surface->magic != egl_surface_t::MAGIC) 1155 return setError(EGL_BAD_SURFACE, EGL_FALSE); 1156 if (surface->dpy != dpy) 1157 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1158 delete surface; 1159 } 1160 return EGL_TRUE; 1161} 1162 1163EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface eglSurface, 1164 EGLint attribute, EGLint *value) 1165{ 1166 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1167 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1168 egl_surface_t* surface = static_cast<egl_surface_t*>(eglSurface); 1169 if (surface->dpy != dpy) 1170 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1171 1172 EGLBoolean ret = EGL_TRUE; 1173 switch (attribute) { 1174 case EGL_CONFIG_ID: 1175 ret = getConfigAttrib(dpy, surface->config, EGL_CONFIG_ID, value); 1176 break; 1177 case EGL_WIDTH: 1178 *value = surface->getWidth(); 1179 break; 1180 case EGL_HEIGHT: 1181 *value = surface->getHeight(); 1182 break; 1183 case EGL_LARGEST_PBUFFER: 1184 // not modified for a window or pixmap surface 1185 break; 1186 case EGL_TEXTURE_FORMAT: 1187 *value = EGL_NO_TEXTURE; 1188 break; 1189 case EGL_TEXTURE_TARGET: 1190 *value = EGL_NO_TEXTURE; 1191 break; 1192 case EGL_MIPMAP_TEXTURE: 1193 *value = EGL_FALSE; 1194 break; 1195 case EGL_MIPMAP_LEVEL: 1196 *value = 0; 1197 break; 1198 case EGL_RENDER_BUFFER: 1199 // TODO: return the real RENDER_BUFFER here 1200 *value = EGL_BACK_BUFFER; 1201 break; 1202 case EGL_HORIZONTAL_RESOLUTION: 1203 // pixel/mm * EGL_DISPLAY_SCALING 1204 *value = surface->getHorizontalResolution(); 1205 break; 1206 case EGL_VERTICAL_RESOLUTION: 1207 // pixel/mm * EGL_DISPLAY_SCALING 1208 *value = surface->getVerticalResolution(); 1209 break; 1210 case EGL_PIXEL_ASPECT_RATIO: { 1211 // w/h * EGL_DISPLAY_SCALING 1212 int wr = surface->getHorizontalResolution(); 1213 int hr = surface->getVerticalResolution(); 1214 *value = (wr * EGL_DISPLAY_SCALING) / hr; 1215 } break; 1216 case EGL_SWAP_BEHAVIOR: 1217 *value = surface->getSwapBehavior(); 1218 break; 1219 default: 1220 ret = setError(EGL_BAD_ATTRIBUTE, EGL_FALSE); 1221 } 1222 return ret; 1223} 1224 1225EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config, 1226 EGLContext share_list, const EGLint *attrib_list) 1227{ 1228 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1229 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 1230 1231 ogles_context_t* gl = ogles_init(sizeof(egl_context_t)); 1232 if (!gl) return setError(EGL_BAD_ALLOC, EGL_NO_CONTEXT); 1233 1234 egl_context_t* c = static_cast<egl_context_t*>(gl->rasterizer.base); 1235 c->flags = egl_context_t::NEVER_CURRENT; 1236 c->dpy = dpy; 1237 c->config = config; 1238 c->read = 0; 1239 c->draw = 0; 1240 return (EGLContext)gl; 1241} 1242 1243EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx) 1244{ 1245 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1246 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1247 egl_context_t* c = egl_context_t::context(ctx); 1248 if (c->flags & egl_context_t::IS_CURRENT) 1249 setGlThreadSpecific(0); 1250 ogles_uninit((ogles_context_t*)ctx); 1251 return EGL_TRUE; 1252} 1253 1254EGLBoolean eglMakeCurrent( EGLDisplay dpy, EGLSurface draw, 1255 EGLSurface read, EGLContext ctx) 1256{ 1257 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1258 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1259 if (draw) { 1260 egl_surface_t* s = (egl_surface_t*)draw; 1261 if (s->dpy != dpy) 1262 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1263 // TODO: check that draw and read are compatible with the context 1264 } 1265 1266 EGLContext current_ctx = EGL_NO_CONTEXT; 1267 1268 if ((read == EGL_NO_SURFACE && draw == EGL_NO_SURFACE) && (ctx != EGL_NO_CONTEXT)) 1269 return setError(EGL_BAD_MATCH, EGL_FALSE); 1270 1271 if ((read != EGL_NO_SURFACE || draw != EGL_NO_SURFACE) && (ctx == EGL_NO_CONTEXT)) 1272 return setError(EGL_BAD_MATCH, EGL_FALSE); 1273 1274 if (ctx == EGL_NO_CONTEXT) { 1275 // if we're detaching, we need the current context 1276 current_ctx = (EGLContext)getGlThreadSpecific(); 1277 } else { 1278 egl_context_t* c = egl_context_t::context(ctx); 1279 egl_surface_t* d = (egl_surface_t*)draw; 1280 egl_surface_t* r = (egl_surface_t*)read; 1281 if ((d && d->ctx && d->ctx != ctx) || 1282 (r && r->ctx && r->ctx != ctx)) { 1283 // once of the surface is bound to a context in another thread 1284 return setError(EGL_BAD_ACCESS, EGL_FALSE); 1285 } 1286 } 1287 1288 ogles_context_t* gl = (ogles_context_t*)ctx; 1289 if (makeCurrent(gl) == 0) { 1290 if (ctx) { 1291 egl_context_t* c = egl_context_t::context(ctx); 1292 egl_surface_t* d = (egl_surface_t*)draw; 1293 egl_surface_t* r = (egl_surface_t*)read; 1294 c->read = read; 1295 c->draw = draw; 1296 if (c->flags & egl_context_t::NEVER_CURRENT) { 1297 c->flags &= ~egl_context_t::NEVER_CURRENT; 1298 GLint w = 0; 1299 GLint h = 0; 1300 if (draw) { 1301 w = d->getWidth(); 1302 h = d->getHeight(); 1303 } 1304 ogles_surfaceport(gl, 0, 0); 1305 ogles_viewport(gl, 0, 0, w, h); 1306 ogles_scissor(gl, 0, 0, w, h); 1307 } 1308 if (d) { 1309 d->ctx = ctx; 1310 d->bindDrawSurface(gl); 1311 } 1312 if (r) { 1313 r->ctx = ctx; 1314 r->bindReadSurface(gl); 1315 } 1316 } else { 1317 // if surfaces were bound to the context bound to this thread 1318 // mark then as unbound. 1319 if (current_ctx) { 1320 egl_context_t* c = egl_context_t::context(current_ctx); 1321 egl_surface_t* d = (egl_surface_t*)c->draw; 1322 egl_surface_t* r = (egl_surface_t*)c->read; 1323 if (d) d->ctx = EGL_NO_CONTEXT; 1324 if (r) r->ctx = EGL_NO_CONTEXT; 1325 } 1326 } 1327 return EGL_TRUE; 1328 } 1329 return setError(EGL_BAD_ACCESS, EGL_FALSE); 1330} 1331 1332EGLContext eglGetCurrentContext(void) 1333{ 1334 // eglGetCurrentContext returns the current EGL rendering context, 1335 // as specified by eglMakeCurrent. If no context is current, 1336 // EGL_NO_CONTEXT is returned. 1337 return (EGLContext)getGlThreadSpecific(); 1338} 1339 1340EGLSurface eglGetCurrentSurface(EGLint readdraw) 1341{ 1342 // eglGetCurrentSurface returns the read or draw surface attached 1343 // to the current EGL rendering context, as specified by eglMakeCurrent. 1344 // If no context is current, EGL_NO_SURFACE is returned. 1345 EGLContext ctx = (EGLContext)getGlThreadSpecific(); 1346 if (ctx == EGL_NO_CONTEXT) return EGL_NO_SURFACE; 1347 egl_context_t* c = egl_context_t::context(ctx); 1348 if (readdraw == EGL_READ) { 1349 return c->read; 1350 } else if (readdraw == EGL_DRAW) { 1351 return c->draw; 1352 } 1353 return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE); 1354} 1355 1356EGLDisplay eglGetCurrentDisplay(void) 1357{ 1358 // eglGetCurrentDisplay returns the current EGL display connection 1359 // for the current EGL rendering context, as specified by eglMakeCurrent. 1360 // If no context is current, EGL_NO_DISPLAY is returned. 1361 EGLContext ctx = (EGLContext)getGlThreadSpecific(); 1362 if (ctx == EGL_NO_CONTEXT) return EGL_NO_DISPLAY; 1363 egl_context_t* c = egl_context_t::context(ctx); 1364 return c->dpy; 1365} 1366 1367EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx, 1368 EGLint attribute, EGLint *value) 1369{ 1370 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1371 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1372 egl_context_t* c = egl_context_t::context(ctx); 1373 switch (attribute) { 1374 case EGL_CONFIG_ID: 1375 // Returns the ID of the EGL frame buffer configuration with 1376 // respect to which the context was created 1377 return getConfigAttrib(dpy, c->config, EGL_CONFIG_ID, value); 1378 } 1379 return setError(EGL_BAD_ATTRIBUTE, EGL_FALSE); 1380} 1381 1382EGLBoolean eglWaitGL(void) 1383{ 1384 return EGL_TRUE; 1385} 1386 1387EGLBoolean eglWaitNative(EGLint engine) 1388{ 1389 return EGL_TRUE; 1390} 1391 1392EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw) 1393{ 1394 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1395 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1396 1397 egl_surface_t* d = static_cast<egl_surface_t*>(draw); 1398 if (d->dpy != dpy) 1399 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1400 1401 // post the surface 1402 d->swapBuffers(); 1403 1404 // if it's bound to a context, update the buffer 1405 if (d->ctx != EGL_NO_CONTEXT) { 1406 d->bindDrawSurface((ogles_context_t*)d->ctx); 1407 // if this surface is also the read surface of the context 1408 // it is bound to, make sure to update the read buffer as well. 1409 // The EGL spec is a little unclear about this. 1410 egl_context_t* c = egl_context_t::context(d->ctx); 1411 if (c->read == draw) { 1412 d->bindReadSurface((ogles_context_t*)d->ctx); 1413 } 1414 } 1415 1416 return EGL_TRUE; 1417} 1418 1419EGLBoolean eglCopyBuffers( EGLDisplay dpy, EGLSurface surface, 1420 NativePixmapType target) 1421{ 1422 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1423 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1424 // TODO: eglCopyBuffers() 1425 return EGL_FALSE; 1426} 1427 1428EGLint eglGetError(void) 1429{ 1430 return getError(); 1431} 1432 1433const char* eglQueryString(EGLDisplay dpy, EGLint name) 1434{ 1435 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1436 return setError(EGL_BAD_DISPLAY, (const char*)0); 1437 1438 switch (name) { 1439 case EGL_VENDOR: 1440 return gVendorString; 1441 case EGL_VERSION: 1442 return gVersionString; 1443 case EGL_EXTENSIONS: 1444 return gExtensionsString; 1445 case EGL_CLIENT_APIS: 1446 return gClientApiString; 1447 } 1448 return setError(EGL_BAD_PARAMETER, (const char *)0); 1449} 1450 1451// ---------------------------------------------------------------------------- 1452// EGL 1.1 1453// ---------------------------------------------------------------------------- 1454 1455EGLBoolean eglSurfaceAttrib( 1456 EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value) 1457{ 1458 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1459 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1460 // TODO: eglSurfaceAttrib() 1461 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1462} 1463 1464EGLBoolean eglBindTexImage( 1465 EGLDisplay dpy, EGLSurface surface, EGLint buffer) 1466{ 1467 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1468 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1469 // TODO: eglBindTexImage() 1470 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1471} 1472 1473EGLBoolean eglReleaseTexImage( 1474 EGLDisplay dpy, EGLSurface surface, EGLint buffer) 1475{ 1476 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1477 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1478 // TODO: eglReleaseTexImage() 1479 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1480} 1481 1482EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval) 1483{ 1484 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1485 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1486 // TODO: eglSwapInterval() 1487 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1488} 1489 1490// ---------------------------------------------------------------------------- 1491// EGL 1.2 1492// ---------------------------------------------------------------------------- 1493 1494EGLBoolean eglBindAPI(EGLenum api) 1495{ 1496 if (api != EGL_OPENGL_ES_API) 1497 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1498 return EGL_TRUE; 1499} 1500 1501EGLenum eglQueryAPI(void) 1502{ 1503 return EGL_OPENGL_ES_API; 1504} 1505 1506EGLBoolean eglWaitClient(void) 1507{ 1508 glFinish(); 1509 return EGL_TRUE; 1510} 1511 1512EGLBoolean eglReleaseThread(void) 1513{ 1514 // TODO: eglReleaseThread() 1515 return EGL_TRUE; 1516} 1517 1518EGLSurface eglCreatePbufferFromClientBuffer( 1519 EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer, 1520 EGLConfig config, const EGLint *attrib_list) 1521{ 1522 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1523 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 1524 // TODO: eglCreatePbufferFromClientBuffer() 1525 return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE); 1526} 1527 1528// ---------------------------------------------------------------------------- 1529// Android extensions 1530// ---------------------------------------------------------------------------- 1531 1532void (*eglGetProcAddress (const char *procname))() 1533{ 1534 extention_map_t const * const map = gExtentionMap; 1535 for (uint32_t i=0 ; i<NELEM(gExtentionMap) ; i++) { 1536 if (!strcmp(procname, map[i].name)) { 1537 return map[i].address; 1538 } 1539 } 1540 return NULL; 1541} 1542