egl.cpp revision edbf3b6af777b721cd2a1ef461947e51e88241e1
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// ---------------------------------------------------------------------------- 465 466#define VERSION_MAJOR 1 467#define VERSION_MINOR 2 468static char const * const gVendorString = "Google Inc."; 469static char const * const gVersionString = "1.2 Android Driver"; 470static char const * const gClientApiString = "OpenGL ES"; 471static char const * const gExtensionsString = ""; 472 473// ---------------------------------------------------------------------------- 474 475struct extention_map_t { 476 const char * const name; 477 __eglMustCastToProperFunctionPointerType address; 478}; 479 480static const extention_map_t gExtentionMap[] = { 481 { "glDrawTexsOES", (void(*)())&glDrawTexsOES }, 482 { "glDrawTexiOES", (void(*)())&glDrawTexiOES }, 483 { "glDrawTexfOES", (void(*)())&glDrawTexfOES }, 484 { "glDrawTexxOES", (void(*)())&glDrawTexxOES }, 485 { "glDrawTexsvOES", (void(*)())&glDrawTexsvOES }, 486 { "glDrawTexivOES", (void(*)())&glDrawTexivOES }, 487 { "glDrawTexfvOES", (void(*)())&glDrawTexfvOES }, 488 { "glDrawTexxvOES", (void(*)())&glDrawTexxvOES }, 489 { "glQueryMatrixxOES", (void(*)())&glQueryMatrixxOES }, 490 { "glClipPlanef", (void(*)())&glClipPlanef }, 491 { "glClipPlanex", (void(*)())&glClipPlanex }, 492 { "glBindBuffer", (void(*)())&glBindBuffer }, 493 { "glBufferData", (void(*)())&glBufferData }, 494 { "glBufferSubData", (void(*)())&glBufferSubData }, 495 { "glDeleteBuffers", (void(*)())&glDeleteBuffers }, 496 { "glGenBuffers", (void(*)())&glGenBuffers }, 497}; 498 499/* 500 * In the lists below, attributes names MUST be sorted. 501 * Additionally, all configs must be sorted according to 502 * the EGL specification. 503 */ 504 505static config_pair_t const config_base_attribute_list[] = { 506 { EGL_STENCIL_SIZE, 0 }, 507 { EGL_CONFIG_CAVEAT, EGL_SLOW_CONFIG }, 508 { EGL_LEVEL, 0 }, 509 { EGL_MAX_PBUFFER_HEIGHT, GGL_MAX_VIEWPORT_DIMS }, 510 { EGL_MAX_PBUFFER_PIXELS, 511 GGL_MAX_VIEWPORT_DIMS*GGL_MAX_VIEWPORT_DIMS }, 512 { EGL_MAX_PBUFFER_WIDTH, GGL_MAX_VIEWPORT_DIMS }, 513 { EGL_NATIVE_RENDERABLE, EGL_TRUE }, 514 { EGL_NATIVE_VISUAL_ID, 0 }, 515 { EGL_NATIVE_VISUAL_TYPE, GGL_PIXEL_FORMAT_RGB_565 }, 516 { EGL_SAMPLES, 0 }, 517 { EGL_SAMPLE_BUFFERS, 0 }, 518 { EGL_TRANSPARENT_TYPE, EGL_NONE }, 519 { EGL_TRANSPARENT_BLUE_VALUE, 0 }, 520 { EGL_TRANSPARENT_GREEN_VALUE, 0 }, 521 { EGL_TRANSPARENT_RED_VALUE, 0 }, 522 { EGL_BIND_TO_TEXTURE_RGBA, EGL_FALSE }, 523 { EGL_BIND_TO_TEXTURE_RGB, EGL_FALSE }, 524 { EGL_MIN_SWAP_INTERVAL, 1 }, 525 { EGL_MAX_SWAP_INTERVAL, 4 }, 526}; 527 528// These configs can override the base attribute list 529// NOTE: when adding a config here, don't forget to update eglCreate*Surface() 530 531static config_pair_t const config_0_attribute_list[] = { 532 { EGL_BUFFER_SIZE, 16 }, 533 { EGL_ALPHA_SIZE, 0 }, 534 { EGL_BLUE_SIZE, 5 }, 535 { EGL_GREEN_SIZE, 6 }, 536 { EGL_RED_SIZE, 5 }, 537 { EGL_DEPTH_SIZE, 0 }, 538 { EGL_CONFIG_ID, 0 }, 539 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 540}; 541 542static config_pair_t const config_1_attribute_list[] = { 543 { EGL_BUFFER_SIZE, 16 }, 544 { EGL_ALPHA_SIZE, 0 }, 545 { EGL_BLUE_SIZE, 5 }, 546 { EGL_GREEN_SIZE, 6 }, 547 { EGL_RED_SIZE, 5 }, 548 { EGL_DEPTH_SIZE, 16 }, 549 { EGL_CONFIG_ID, 1 }, 550 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 551}; 552 553static config_pair_t const config_2_attribute_list[] = { 554 { EGL_BUFFER_SIZE, 32 }, 555 { EGL_ALPHA_SIZE, 8 }, 556 { EGL_BLUE_SIZE, 8 }, 557 { EGL_GREEN_SIZE, 8 }, 558 { EGL_RED_SIZE, 8 }, 559 { EGL_DEPTH_SIZE, 0 }, 560 { EGL_CONFIG_ID, 2 }, 561 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 562}; 563 564static config_pair_t const config_3_attribute_list[] = { 565 { EGL_BUFFER_SIZE, 32 }, 566 { EGL_ALPHA_SIZE, 8 }, 567 { EGL_BLUE_SIZE, 8 }, 568 { EGL_GREEN_SIZE, 8 }, 569 { EGL_RED_SIZE, 8 }, 570 { EGL_DEPTH_SIZE, 16 }, 571 { EGL_CONFIG_ID, 3 }, 572 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 573}; 574 575static config_pair_t const config_4_attribute_list[] = { 576 { EGL_BUFFER_SIZE, 8 }, 577 { EGL_ALPHA_SIZE, 8 }, 578 { EGL_BLUE_SIZE, 0 }, 579 { EGL_GREEN_SIZE, 0 }, 580 { EGL_RED_SIZE, 0 }, 581 { EGL_DEPTH_SIZE, 0 }, 582 { EGL_CONFIG_ID, 4 }, 583 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 584}; 585 586static config_pair_t const config_5_attribute_list[] = { 587 { EGL_BUFFER_SIZE, 8 }, 588 { EGL_ALPHA_SIZE, 8 }, 589 { EGL_BLUE_SIZE, 0 }, 590 { EGL_GREEN_SIZE, 0 }, 591 { EGL_RED_SIZE, 0 }, 592 { EGL_DEPTH_SIZE, 16 }, 593 { EGL_CONFIG_ID, 5 }, 594 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 595}; 596 597static configs_t const gConfigs[] = { 598 { config_0_attribute_list, NELEM(config_0_attribute_list) }, 599 { config_1_attribute_list, NELEM(config_1_attribute_list) }, 600 { config_2_attribute_list, NELEM(config_2_attribute_list) }, 601 { config_3_attribute_list, NELEM(config_3_attribute_list) }, 602 { config_4_attribute_list, NELEM(config_4_attribute_list) }, 603 { config_5_attribute_list, NELEM(config_5_attribute_list) }, 604}; 605 606static config_management_t const gConfigManagement[] = { 607 { EGL_BUFFER_SIZE, config_management_t::atLeast }, 608 { EGL_ALPHA_SIZE, config_management_t::atLeast }, 609 { EGL_BLUE_SIZE, config_management_t::atLeast }, 610 { EGL_GREEN_SIZE, config_management_t::atLeast }, 611 { EGL_RED_SIZE, config_management_t::atLeast }, 612 { EGL_DEPTH_SIZE, config_management_t::atLeast }, 613 { EGL_STENCIL_SIZE, config_management_t::atLeast }, 614 { EGL_CONFIG_CAVEAT, config_management_t::exact }, 615 { EGL_CONFIG_ID, config_management_t::exact }, 616 { EGL_LEVEL, config_management_t::exact }, 617 { EGL_MAX_PBUFFER_HEIGHT, config_management_t::exact }, 618 { EGL_MAX_PBUFFER_PIXELS, config_management_t::exact }, 619 { EGL_MAX_PBUFFER_WIDTH, config_management_t::exact }, 620 { EGL_NATIVE_RENDERABLE, config_management_t::exact }, 621 { EGL_NATIVE_VISUAL_ID, config_management_t::exact }, 622 { EGL_NATIVE_VISUAL_TYPE, config_management_t::exact }, 623 { EGL_SAMPLES, config_management_t::exact }, 624 { EGL_SAMPLE_BUFFERS, config_management_t::exact }, 625 { EGL_SURFACE_TYPE, config_management_t::mask }, 626 { EGL_TRANSPARENT_TYPE, config_management_t::exact }, 627 { EGL_TRANSPARENT_BLUE_VALUE, config_management_t::exact }, 628 { EGL_TRANSPARENT_GREEN_VALUE, config_management_t::exact }, 629 { EGL_TRANSPARENT_RED_VALUE, config_management_t::exact }, 630 { EGL_BIND_TO_TEXTURE_RGBA, config_management_t::exact }, 631 { EGL_BIND_TO_TEXTURE_RGB, config_management_t::exact }, 632 { EGL_MIN_SWAP_INTERVAL, config_management_t::exact }, 633 { EGL_MAX_SWAP_INTERVAL, config_management_t::exact }, 634}; 635 636static config_pair_t const config_defaults[] = { 637 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT }, 638}; 639 640// ---------------------------------------------------------------------------- 641 642template<typename T> 643static int binarySearch(T const sortedArray[], int first, int last, EGLint key) 644{ 645 while (first <= last) { 646 int mid = (first + last) / 2; 647 if (key > sortedArray[mid].key) { 648 first = mid + 1; 649 } else if (key < sortedArray[mid].key) { 650 last = mid - 1; 651 } else { 652 return mid; 653 } 654 } 655 return -1; 656} 657 658static int isAttributeMatching(int i, EGLint attr, EGLint val) 659{ 660 // look for the attribute in all of our configs 661 config_pair_t const* configFound = gConfigs[i].array; 662 int index = binarySearch<config_pair_t>( 663 gConfigs[i].array, 664 0, gConfigs[i].size-1, 665 attr); 666 if (index < 0) { 667 configFound = config_base_attribute_list; 668 index = binarySearch<config_pair_t>( 669 config_base_attribute_list, 670 0, NELEM(config_base_attribute_list)-1, 671 attr); 672 } 673 if (index >= 0) { 674 // attribute found, check if this config could match 675 int cfgMgtIndex = binarySearch<config_management_t>( 676 gConfigManagement, 677 0, NELEM(gConfigManagement)-1, 678 attr); 679 if (index >= 0) { 680 bool match = gConfigManagement[cfgMgtIndex].match( 681 val, configFound[index].value); 682 if (match) { 683 // this config matches 684 return 1; 685 } 686 } else { 687 // attribute not found. this should NEVER happen. 688 } 689 } else { 690 // error, this attribute doesn't exist 691 } 692 return 0; 693} 694 695static int makeCurrent(ogles_context_t* gl) 696{ 697 ogles_context_t* current = (ogles_context_t*)getGlThreadSpecific(); 698 if (gl) { 699 egl_context_t* c = egl_context_t::context(gl); 700 if (c->flags & egl_context_t::IS_CURRENT) { 701 if (current != gl) { 702 // it is an error to set a context current, if it's already 703 // current to another thread 704 return -1; 705 } 706 } else { 707 if (current) { 708 // mark the current context as not current, and flush 709 glFlush(); 710 egl_context_t::context(current)->flags &= ~egl_context_t::IS_CURRENT; 711 } 712 } 713 if (!(c->flags & egl_context_t::IS_CURRENT)) { 714 // The context is not current, make it current! 715 setGlThreadSpecific(gl); 716 c->flags |= egl_context_t::IS_CURRENT; 717 } 718 } else { 719 if (current) { 720 // mark the current context as not current, and flush 721 glFlush(); 722 egl_context_t::context(current)->flags &= ~egl_context_t::IS_CURRENT; 723 } 724 // this thread has no context attached to it 725 setGlThreadSpecific(0); 726 } 727 return 0; 728} 729 730static EGLBoolean getConfigAttrib(EGLDisplay dpy, EGLConfig config, 731 EGLint attribute, EGLint *value) 732{ 733 size_t numConfigs = NELEM(gConfigs); 734 int index = (int)config; 735 if (uint32_t(index) >= numConfigs) 736 return setError(EGL_BAD_CONFIG, EGL_FALSE); 737 738 int attrIndex; 739 attrIndex = binarySearch<config_pair_t>( 740 gConfigs[index].array, 741 0, gConfigs[index].size-1, 742 attribute); 743 if (attrIndex>=0) { 744 *value = gConfigs[index].array[attrIndex].value; 745 return EGL_TRUE; 746 } 747 748 attrIndex = binarySearch<config_pair_t>( 749 config_base_attribute_list, 750 0, NELEM(config_base_attribute_list)-1, 751 attribute); 752 if (attrIndex>=0) { 753 *value = config_base_attribute_list[attrIndex].value; 754 return EGL_TRUE; 755 } 756 return setError(EGL_BAD_ATTRIBUTE, EGL_FALSE); 757} 758 759static EGLSurface createWindowSurface(EGLDisplay dpy, EGLConfig config, 760 NativeWindowType window, const EGLint *attrib_list) 761{ 762 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 763 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 764 if (window == 0) 765 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 766 767 EGLint surfaceType; 768 if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE) 769 return EGL_FALSE; 770 771 if (!(surfaceType & EGL_WINDOW_BIT)) 772 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 773 774 EGLint configID; 775 if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE) 776 return EGL_FALSE; 777 778 int32_t depthFormat; 779 int32_t pixelFormat; 780 switch(configID) { 781 case 0: 782 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 783 depthFormat = 0; 784 break; 785 case 1: 786 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 787 depthFormat = GGL_PIXEL_FORMAT_Z_16; 788 break; 789 case 2: 790 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 791 depthFormat = 0; 792 break; 793 case 3: 794 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 795 depthFormat = GGL_PIXEL_FORMAT_Z_16; 796 break; 797 case 4: 798 pixelFormat = GGL_PIXEL_FORMAT_A_8; 799 depthFormat = 0; 800 break; 801 case 5: 802 pixelFormat = GGL_PIXEL_FORMAT_A_8; 803 depthFormat = GGL_PIXEL_FORMAT_Z_16; 804 break; 805 default: 806 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 807 } 808 809 // FIXME: we don't have access to the pixelFormat here just yet. 810 // (it's possible that the surface is not fully initialized) 811 // maybe this should be done after the page-flip 812 //if (EGLint(info.format) != pixelFormat) 813 // return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 814 815 egl_surface_t* surface = 816 new egl_window_surface_t(dpy, config, depthFormat, 817 static_cast<egl_native_window_t*>(window)); 818 819 if (!surface->isValid()) { 820 // there was a problem in the ctor, the error 821 // flag has been set. 822 delete surface; 823 surface = 0; 824 } 825 return surface; 826} 827 828static EGLSurface createPixmapSurface(EGLDisplay dpy, EGLConfig config, 829 NativePixmapType pixmap, const EGLint *attrib_list) 830{ 831 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 832 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 833 if (pixmap == 0) 834 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 835 836 EGLint surfaceType; 837 if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE) 838 return EGL_FALSE; 839 840 if (!(surfaceType & EGL_PIXMAP_BIT)) 841 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 842 843 EGLint configID; 844 if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE) 845 return EGL_FALSE; 846 847 int32_t depthFormat; 848 int32_t pixelFormat; 849 switch(configID) { 850 case 0: 851 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 852 depthFormat = 0; 853 break; 854 case 1: 855 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 856 depthFormat = GGL_PIXEL_FORMAT_Z_16; 857 break; 858 case 2: 859 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 860 depthFormat = 0; 861 break; 862 case 3: 863 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 864 depthFormat = GGL_PIXEL_FORMAT_Z_16; 865 break; 866 case 4: 867 pixelFormat = GGL_PIXEL_FORMAT_A_8; 868 depthFormat = 0; 869 break; 870 case 5: 871 pixelFormat = GGL_PIXEL_FORMAT_A_8; 872 depthFormat = GGL_PIXEL_FORMAT_Z_16; 873 break; 874 default: 875 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 876 } 877 878 if (pixmap->format != pixelFormat) 879 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 880 881 egl_surface_t* surface = 882 new egl_pixmap_surface_t(dpy, config, depthFormat, 883 static_cast<egl_native_pixmap_t*>(pixmap)); 884 885 if (!surface->isValid()) { 886 // there was a problem in the ctor, the error 887 // flag has been set. 888 delete surface; 889 surface = 0; 890 } 891 return surface; 892} 893 894static EGLSurface createPbufferSurface(EGLDisplay dpy, EGLConfig config, 895 const EGLint *attrib_list) 896{ 897 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 898 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 899 900 EGLint surfaceType; 901 if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE) 902 return EGL_FALSE; 903 904 if (!(surfaceType & EGL_PBUFFER_BIT)) 905 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 906 907 EGLint configID; 908 if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE) 909 return EGL_FALSE; 910 911 int32_t depthFormat; 912 int32_t pixelFormat; 913 switch(configID) { 914 case 0: 915 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 916 depthFormat = 0; 917 break; 918 case 1: 919 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 920 depthFormat = GGL_PIXEL_FORMAT_Z_16; 921 break; 922 case 2: 923 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 924 depthFormat = 0; 925 break; 926 case 3: 927 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 928 depthFormat = GGL_PIXEL_FORMAT_Z_16; 929 break; 930 case 4: 931 pixelFormat = GGL_PIXEL_FORMAT_A_8; 932 depthFormat = 0; 933 break; 934 case 5: 935 pixelFormat = GGL_PIXEL_FORMAT_A_8; 936 depthFormat = GGL_PIXEL_FORMAT_Z_16; 937 break; 938 default: 939 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 940 } 941 942 int32_t w = 0; 943 int32_t h = 0; 944 while (attrib_list[0]) { 945 if (attrib_list[0] == EGL_WIDTH) w = attrib_list[1]; 946 if (attrib_list[0] == EGL_HEIGHT) h = attrib_list[1]; 947 attrib_list+=2; 948 } 949 950 egl_surface_t* surface = 951 new egl_pbuffer_surface_t(dpy, config, depthFormat, w, h, pixelFormat); 952 953 if (!surface->isValid()) { 954 // there was a problem in the ctor, the error 955 // flag has been set. 956 delete surface; 957 surface = 0; 958 } 959 return surface; 960} 961 962// ---------------------------------------------------------------------------- 963}; // namespace android 964// ---------------------------------------------------------------------------- 965 966using namespace android; 967 968// ---------------------------------------------------------------------------- 969// Initialization 970// ---------------------------------------------------------------------------- 971 972EGLDisplay eglGetDisplay(NativeDisplayType display) 973{ 974#ifndef HAVE_ANDROID_OS 975 // this just needs to be done once 976 if (gGLKey == -1) { 977 pthread_mutex_lock(&gInitMutex); 978 if (gGLKey == -1) 979 pthread_key_create(&gGLKey, NULL); 980 pthread_mutex_unlock(&gInitMutex); 981 } 982#endif 983 if (display == EGL_DEFAULT_DISPLAY) { 984 EGLDisplay dpy = (EGLDisplay)1; 985 egl_display_t& d = egl_display_t::get_display(dpy); 986 d.type = display; 987 return dpy; 988 } 989 return EGL_NO_DISPLAY; 990} 991 992EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor) 993{ 994 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 995 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 996 997 EGLBoolean res = EGL_TRUE; 998 egl_display_t& d = egl_display_t::get_display(dpy); 999 1000 if (android_atomic_inc(&d.initialized) == 0) { 1001 // initialize stuff here if needed 1002 //pthread_mutex_lock(&gInitMutex); 1003 //pthread_mutex_unlock(&gInitMutex); 1004 } 1005 1006 if (res == EGL_TRUE) { 1007 if (major != NULL) *major = VERSION_MAJOR; 1008 if (minor != NULL) *minor = VERSION_MINOR; 1009 } 1010 return res; 1011} 1012 1013EGLBoolean eglTerminate(EGLDisplay dpy) 1014{ 1015 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1016 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1017 1018 EGLBoolean res = EGL_TRUE; 1019 egl_display_t& d = egl_display_t::get_display(dpy); 1020 if (android_atomic_dec(&d.initialized) == 1) { 1021 // TODO: destroy all resources (surfaces, contexts, etc...) 1022 //pthread_mutex_lock(&gInitMutex); 1023 //pthread_mutex_unlock(&gInitMutex); 1024 } 1025 return res; 1026} 1027 1028// ---------------------------------------------------------------------------- 1029// configuration 1030// ---------------------------------------------------------------------------- 1031 1032EGLBoolean eglGetConfigs( EGLDisplay dpy, 1033 EGLConfig *configs, 1034 EGLint config_size, EGLint *num_config) 1035{ 1036 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1037 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1038 1039 GLint numConfigs = NELEM(gConfigs); 1040 if (!configs) { 1041 *num_config = numConfigs; 1042 return EGL_TRUE; 1043 } 1044 GLint i; 1045 for (i=0 ; i<numConfigs && i<config_size ; i++) { 1046 *configs++ = (EGLConfig)i; 1047 } 1048 *num_config = i; 1049 return EGL_TRUE; 1050} 1051 1052EGLBoolean eglChooseConfig( EGLDisplay dpy, const EGLint *attrib_list, 1053 EGLConfig *configs, EGLint config_size, 1054 EGLint *num_config) 1055{ 1056 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1057 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1058 1059 if (ggl_unlikely(configs==0 || attrib_list==0)) { 1060 *num_config = 0; 1061 return EGL_TRUE; 1062 } 1063 1064 int numAttributes = 0; 1065 int numConfigs = NELEM(gConfigs); 1066 uint32_t possibleMatch = (1<<numConfigs)-1; 1067 while(possibleMatch && *attrib_list != EGL_NONE) { 1068 numAttributes++; 1069 EGLint attr = *attrib_list++; 1070 EGLint val = *attrib_list++; 1071 for (int i=0 ; i<numConfigs ; i++) { 1072 if (!(possibleMatch & (1<<i))) 1073 continue; 1074 if (isAttributeMatching(i, attr, val) == 0) { 1075 possibleMatch &= ~(1<<i); 1076 } 1077 } 1078 } 1079 1080 // now, handle the attributes which have a useful default value 1081 for (size_t j=0 ; j<NELEM(config_defaults) ; j++) { 1082 // see if this attribute was specified, if not apply its 1083 // default value 1084 if (binarySearch<config_pair_t>( 1085 (config_pair_t const*)attrib_list, 1086 0, numAttributes, 1087 config_defaults[j].key) < 0) 1088 { 1089 for (int i=0 ; i<numConfigs ; i++) { 1090 if (!(possibleMatch & (1<<i))) 1091 continue; 1092 if (isAttributeMatching(i, 1093 config_defaults[j].key, 1094 config_defaults[j].value) == 0) 1095 { 1096 possibleMatch &= ~(1<<i); 1097 } 1098 } 1099 } 1100 } 1101 1102 // return the configurations found 1103 int n=0; 1104 if (possibleMatch) { 1105 for (int i=0 ; config_size && i<numConfigs ; i++) { 1106 if (possibleMatch & (1<<i)) { 1107 *configs++ = (EGLConfig)i; 1108 config_size--; 1109 n++; 1110 } 1111 } 1112 } 1113 *num_config = n; 1114 return EGL_TRUE; 1115} 1116 1117EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config, 1118 EGLint attribute, EGLint *value) 1119{ 1120 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1121 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1122 1123 return getConfigAttrib(dpy, config, attribute, value); 1124} 1125 1126// ---------------------------------------------------------------------------- 1127// surfaces 1128// ---------------------------------------------------------------------------- 1129 1130EGLSurface eglCreateWindowSurface( EGLDisplay dpy, EGLConfig config, 1131 NativeWindowType window, 1132 const EGLint *attrib_list) 1133{ 1134 return createWindowSurface(dpy, config, window, attrib_list); 1135} 1136 1137EGLSurface eglCreatePixmapSurface( EGLDisplay dpy, EGLConfig config, 1138 NativePixmapType pixmap, 1139 const EGLint *attrib_list) 1140{ 1141 return createPixmapSurface(dpy, config, pixmap, attrib_list); 1142} 1143 1144EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config, 1145 const EGLint *attrib_list) 1146{ 1147 return createPbufferSurface(dpy, config, attrib_list); 1148} 1149 1150EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface eglSurface) 1151{ 1152 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1153 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1154 if (eglSurface != EGL_NO_SURFACE) { 1155 egl_surface_t* surface( static_cast<egl_surface_t*>(eglSurface) ); 1156 if (surface->magic != egl_surface_t::MAGIC) 1157 return setError(EGL_BAD_SURFACE, EGL_FALSE); 1158 if (surface->dpy != dpy) 1159 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1160 delete surface; 1161 } 1162 return EGL_TRUE; 1163} 1164 1165EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface eglSurface, 1166 EGLint attribute, EGLint *value) 1167{ 1168 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1169 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1170 egl_surface_t* surface = static_cast<egl_surface_t*>(eglSurface); 1171 if (surface->dpy != dpy) 1172 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1173 1174 EGLBoolean ret = EGL_TRUE; 1175 switch (attribute) { 1176 case EGL_CONFIG_ID: 1177 ret = getConfigAttrib(dpy, surface->config, EGL_CONFIG_ID, value); 1178 break; 1179 case EGL_WIDTH: 1180 *value = surface->getWidth(); 1181 break; 1182 case EGL_HEIGHT: 1183 *value = surface->getHeight(); 1184 break; 1185 case EGL_LARGEST_PBUFFER: 1186 // not modified for a window or pixmap surface 1187 break; 1188 case EGL_TEXTURE_FORMAT: 1189 *value = EGL_NO_TEXTURE; 1190 break; 1191 case EGL_TEXTURE_TARGET: 1192 *value = EGL_NO_TEXTURE; 1193 break; 1194 case EGL_MIPMAP_TEXTURE: 1195 *value = EGL_FALSE; 1196 break; 1197 case EGL_MIPMAP_LEVEL: 1198 *value = 0; 1199 break; 1200 case EGL_RENDER_BUFFER: 1201 // TODO: return the real RENDER_BUFFER here 1202 *value = EGL_BACK_BUFFER; 1203 break; 1204 case EGL_HORIZONTAL_RESOLUTION: 1205 // pixel/mm * EGL_DISPLAY_SCALING 1206 *value = surface->getHorizontalResolution(); 1207 break; 1208 case EGL_VERTICAL_RESOLUTION: 1209 // pixel/mm * EGL_DISPLAY_SCALING 1210 *value = surface->getVerticalResolution(); 1211 break; 1212 case EGL_PIXEL_ASPECT_RATIO: { 1213 // w/h * EGL_DISPLAY_SCALING 1214 int wr = surface->getHorizontalResolution(); 1215 int hr = surface->getVerticalResolution(); 1216 *value = (wr * EGL_DISPLAY_SCALING) / hr; 1217 } break; 1218 case EGL_SWAP_BEHAVIOR: 1219 *value = surface->getSwapBehavior(); 1220 break; 1221 default: 1222 ret = setError(EGL_BAD_ATTRIBUTE, EGL_FALSE); 1223 } 1224 return ret; 1225} 1226 1227EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config, 1228 EGLContext share_list, const EGLint *attrib_list) 1229{ 1230 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1231 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 1232 1233 ogles_context_t* gl = ogles_init(sizeof(egl_context_t)); 1234 if (!gl) return setError(EGL_BAD_ALLOC, EGL_NO_CONTEXT); 1235 1236 egl_context_t* c = static_cast<egl_context_t*>(gl->rasterizer.base); 1237 c->flags = egl_context_t::NEVER_CURRENT; 1238 c->dpy = dpy; 1239 c->config = config; 1240 c->read = 0; 1241 c->draw = 0; 1242 return (EGLContext)gl; 1243} 1244 1245EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx) 1246{ 1247 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1248 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1249 egl_context_t* c = egl_context_t::context(ctx); 1250 if (c->flags & egl_context_t::IS_CURRENT) 1251 setGlThreadSpecific(0); 1252 ogles_uninit((ogles_context_t*)ctx); 1253 return EGL_TRUE; 1254} 1255 1256EGLBoolean eglMakeCurrent( EGLDisplay dpy, EGLSurface draw, 1257 EGLSurface read, EGLContext ctx) 1258{ 1259 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1260 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1261 if (draw) { 1262 egl_surface_t* s = (egl_surface_t*)draw; 1263 if (s->dpy != dpy) 1264 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1265 // TODO: check that draw and read are compatible with the context 1266 } 1267 1268 EGLContext current_ctx = EGL_NO_CONTEXT; 1269 1270 if ((read == EGL_NO_SURFACE && draw == EGL_NO_SURFACE) && (ctx != EGL_NO_CONTEXT)) 1271 return setError(EGL_BAD_MATCH, EGL_FALSE); 1272 1273 if ((read != EGL_NO_SURFACE || draw != EGL_NO_SURFACE) && (ctx == EGL_NO_CONTEXT)) 1274 return setError(EGL_BAD_MATCH, EGL_FALSE); 1275 1276 if (ctx == EGL_NO_CONTEXT) { 1277 // if we're detaching, we need the current context 1278 current_ctx = (EGLContext)getGlThreadSpecific(); 1279 } else { 1280 egl_context_t* c = egl_context_t::context(ctx); 1281 egl_surface_t* d = (egl_surface_t*)draw; 1282 egl_surface_t* r = (egl_surface_t*)read; 1283 if ((d && d->ctx && d->ctx != ctx) || 1284 (r && r->ctx && r->ctx != ctx)) { 1285 // once of the surface is bound to a context in another thread 1286 return setError(EGL_BAD_ACCESS, EGL_FALSE); 1287 } 1288 } 1289 1290 ogles_context_t* gl = (ogles_context_t*)ctx; 1291 if (makeCurrent(gl) == 0) { 1292 if (ctx) { 1293 egl_context_t* c = egl_context_t::context(ctx); 1294 egl_surface_t* d = (egl_surface_t*)draw; 1295 egl_surface_t* r = (egl_surface_t*)read; 1296 c->read = read; 1297 c->draw = draw; 1298 if (c->flags & egl_context_t::NEVER_CURRENT) { 1299 c->flags &= ~egl_context_t::NEVER_CURRENT; 1300 GLint w = 0; 1301 GLint h = 0; 1302 if (draw) { 1303 w = d->getWidth(); 1304 h = d->getHeight(); 1305 } 1306 ogles_surfaceport(gl, 0, 0); 1307 ogles_viewport(gl, 0, 0, w, h); 1308 ogles_scissor(gl, 0, 0, w, h); 1309 } 1310 if (d) { 1311 d->ctx = ctx; 1312 d->bindDrawSurface(gl); 1313 } 1314 if (r) { 1315 r->ctx = ctx; 1316 r->bindReadSurface(gl); 1317 } 1318 } else { 1319 // if surfaces were bound to the context bound to this thread 1320 // mark then as unbound. 1321 if (current_ctx) { 1322 egl_context_t* c = egl_context_t::context(current_ctx); 1323 egl_surface_t* d = (egl_surface_t*)c->draw; 1324 egl_surface_t* r = (egl_surface_t*)c->read; 1325 if (d) d->ctx = EGL_NO_CONTEXT; 1326 if (r) r->ctx = EGL_NO_CONTEXT; 1327 } 1328 } 1329 return EGL_TRUE; 1330 } 1331 return setError(EGL_BAD_ACCESS, EGL_FALSE); 1332} 1333 1334EGLContext eglGetCurrentContext(void) 1335{ 1336 // eglGetCurrentContext returns the current EGL rendering context, 1337 // as specified by eglMakeCurrent. If no context is current, 1338 // EGL_NO_CONTEXT is returned. 1339 return (EGLContext)getGlThreadSpecific(); 1340} 1341 1342EGLSurface eglGetCurrentSurface(EGLint readdraw) 1343{ 1344 // eglGetCurrentSurface returns the read or draw surface attached 1345 // to the current EGL rendering context, as specified by eglMakeCurrent. 1346 // If no context is current, EGL_NO_SURFACE is returned. 1347 EGLContext ctx = (EGLContext)getGlThreadSpecific(); 1348 if (ctx == EGL_NO_CONTEXT) return EGL_NO_SURFACE; 1349 egl_context_t* c = egl_context_t::context(ctx); 1350 if (readdraw == EGL_READ) { 1351 return c->read; 1352 } else if (readdraw == EGL_DRAW) { 1353 return c->draw; 1354 } 1355 return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE); 1356} 1357 1358EGLDisplay eglGetCurrentDisplay(void) 1359{ 1360 // eglGetCurrentDisplay returns the current EGL display connection 1361 // for the current EGL rendering context, as specified by eglMakeCurrent. 1362 // If no context is current, EGL_NO_DISPLAY is returned. 1363 EGLContext ctx = (EGLContext)getGlThreadSpecific(); 1364 if (ctx == EGL_NO_CONTEXT) return EGL_NO_DISPLAY; 1365 egl_context_t* c = egl_context_t::context(ctx); 1366 return c->dpy; 1367} 1368 1369EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx, 1370 EGLint attribute, EGLint *value) 1371{ 1372 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1373 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1374 egl_context_t* c = egl_context_t::context(ctx); 1375 switch (attribute) { 1376 case EGL_CONFIG_ID: 1377 // Returns the ID of the EGL frame buffer configuration with 1378 // respect to which the context was created 1379 return getConfigAttrib(dpy, c->config, EGL_CONFIG_ID, value); 1380 } 1381 return setError(EGL_BAD_ATTRIBUTE, EGL_FALSE); 1382} 1383 1384EGLBoolean eglWaitGL(void) 1385{ 1386 return EGL_TRUE; 1387} 1388 1389EGLBoolean eglWaitNative(EGLint engine) 1390{ 1391 return EGL_TRUE; 1392} 1393 1394EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw) 1395{ 1396 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1397 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1398 1399 egl_surface_t* d = static_cast<egl_surface_t*>(draw); 1400 if (d->dpy != dpy) 1401 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1402 1403 // post the surface 1404 d->swapBuffers(); 1405 1406 // if it's bound to a context, update the buffer 1407 if (d->ctx != EGL_NO_CONTEXT) { 1408 d->bindDrawSurface((ogles_context_t*)d->ctx); 1409 // if this surface is also the read surface of the context 1410 // it is bound to, make sure to update the read buffer as well. 1411 // The EGL spec is a little unclear about this. 1412 egl_context_t* c = egl_context_t::context(d->ctx); 1413 if (c->read == draw) { 1414 d->bindReadSurface((ogles_context_t*)d->ctx); 1415 } 1416 } 1417 1418 return EGL_TRUE; 1419} 1420 1421EGLBoolean eglCopyBuffers( EGLDisplay dpy, EGLSurface surface, 1422 NativePixmapType target) 1423{ 1424 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1425 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1426 // TODO: eglCopyBuffers() 1427 return EGL_FALSE; 1428} 1429 1430EGLint eglGetError(void) 1431{ 1432 return getError(); 1433} 1434 1435const char* eglQueryString(EGLDisplay dpy, EGLint name) 1436{ 1437 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1438 return setError(EGL_BAD_DISPLAY, (const char*)0); 1439 1440 switch (name) { 1441 case EGL_VENDOR: 1442 return gVendorString; 1443 case EGL_VERSION: 1444 return gVersionString; 1445 case EGL_EXTENSIONS: 1446 return gExtensionsString; 1447 case EGL_CLIENT_APIS: 1448 return gClientApiString; 1449 } 1450 return setError(EGL_BAD_PARAMETER, (const char *)0); 1451} 1452 1453// ---------------------------------------------------------------------------- 1454// EGL 1.1 1455// ---------------------------------------------------------------------------- 1456 1457EGLBoolean eglSurfaceAttrib( 1458 EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value) 1459{ 1460 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1461 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1462 // TODO: eglSurfaceAttrib() 1463 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1464} 1465 1466EGLBoolean eglBindTexImage( 1467 EGLDisplay dpy, EGLSurface surface, EGLint buffer) 1468{ 1469 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1470 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1471 // TODO: eglBindTexImage() 1472 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1473} 1474 1475EGLBoolean eglReleaseTexImage( 1476 EGLDisplay dpy, EGLSurface surface, EGLint buffer) 1477{ 1478 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1479 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1480 // TODO: eglReleaseTexImage() 1481 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1482} 1483 1484EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval) 1485{ 1486 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1487 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1488 // TODO: eglSwapInterval() 1489 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1490} 1491 1492// ---------------------------------------------------------------------------- 1493// EGL 1.2 1494// ---------------------------------------------------------------------------- 1495 1496EGLBoolean eglBindAPI(EGLenum api) 1497{ 1498 if (api != EGL_OPENGL_ES_API) 1499 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1500 return EGL_TRUE; 1501} 1502 1503EGLenum eglQueryAPI(void) 1504{ 1505 return EGL_OPENGL_ES_API; 1506} 1507 1508EGLBoolean eglWaitClient(void) 1509{ 1510 glFinish(); 1511 return EGL_TRUE; 1512} 1513 1514EGLBoolean eglReleaseThread(void) 1515{ 1516 // TODO: eglReleaseThread() 1517 return EGL_TRUE; 1518} 1519 1520EGLSurface eglCreatePbufferFromClientBuffer( 1521 EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer, 1522 EGLConfig config, const EGLint *attrib_list) 1523{ 1524 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1525 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 1526 // TODO: eglCreatePbufferFromClientBuffer() 1527 return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE); 1528} 1529 1530// ---------------------------------------------------------------------------- 1531// Android extensions 1532// ---------------------------------------------------------------------------- 1533 1534void (*eglGetProcAddress (const char *procname))() 1535{ 1536 extention_map_t const * const map = gExtentionMap; 1537 for (uint32_t i=0 ; i<NELEM(gExtentionMap) ; i++) { 1538 if (!strcmp(procname, map[i].name)) { 1539 return map[i].address; 1540 } 1541 } 1542 return NULL; 1543} 1544