egl.cpp revision 9660d304ae51a69509e5506e1fc80178025dee7c
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", 482 (__eglMustCastToProperFunctionPointerType)&glDrawTexsOES }, 483 { "glDrawTexiOES", 484 (__eglMustCastToProperFunctionPointerType)&glDrawTexiOES }, 485 { "glDrawTexfOES", 486 (__eglMustCastToProperFunctionPointerType)&glDrawTexfOES }, 487 { "glDrawTexxOES", 488 (__eglMustCastToProperFunctionPointerType)&glDrawTexxOES }, 489 { "glDrawTexsvOES", 490 (__eglMustCastToProperFunctionPointerType)&glDrawTexsvOES }, 491 { "glDrawTexivOES", 492 (__eglMustCastToProperFunctionPointerType)&glDrawTexivOES }, 493 { "glDrawTexfvOES", 494 (__eglMustCastToProperFunctionPointerType)&glDrawTexfvOES }, 495 { "glDrawTexxvOES", 496 (__eglMustCastToProperFunctionPointerType)&glDrawTexxvOES }, 497 { "glQueryMatrixxOES", 498 (__eglMustCastToProperFunctionPointerType)&glQueryMatrixxOES }, 499 { "glClipPlanef", 500 (__eglMustCastToProperFunctionPointerType)&glClipPlanef }, 501 { "glClipPlanex", 502 (__eglMustCastToProperFunctionPointerType)&glClipPlanex }, 503 { "glBindBuffer", 504 (__eglMustCastToProperFunctionPointerType)&glBindBuffer }, 505 { "glBufferData", 506 (__eglMustCastToProperFunctionPointerType)&glBufferData }, 507 { "glBufferSubData", 508 (__eglMustCastToProperFunctionPointerType)&glBufferSubData }, 509 { "glDeleteBuffers", 510 (__eglMustCastToProperFunctionPointerType)&glDeleteBuffers }, 511 { "glGenBuffers", 512 (__eglMustCastToProperFunctionPointerType)&glGenBuffers }, 513}; 514 515/* 516 * In the lists below, attributes names MUST be sorted. 517 * Additionally, all configs must be sorted according to 518 * the EGL specification. 519 */ 520 521static config_pair_t const config_base_attribute_list[] = { 522 { EGL_STENCIL_SIZE, 0 }, 523 { EGL_CONFIG_CAVEAT, EGL_SLOW_CONFIG }, 524 { EGL_LEVEL, 0 }, 525 { EGL_MAX_PBUFFER_HEIGHT, GGL_MAX_VIEWPORT_DIMS }, 526 { EGL_MAX_PBUFFER_PIXELS, 527 GGL_MAX_VIEWPORT_DIMS*GGL_MAX_VIEWPORT_DIMS }, 528 { EGL_MAX_PBUFFER_WIDTH, GGL_MAX_VIEWPORT_DIMS }, 529 { EGL_NATIVE_RENDERABLE, EGL_TRUE }, 530 { EGL_NATIVE_VISUAL_ID, 0 }, 531 { EGL_NATIVE_VISUAL_TYPE, GGL_PIXEL_FORMAT_RGB_565 }, 532 { EGL_SAMPLES, 0 }, 533 { EGL_SAMPLE_BUFFERS, 0 }, 534 { EGL_TRANSPARENT_TYPE, EGL_NONE }, 535 { EGL_TRANSPARENT_BLUE_VALUE, 0 }, 536 { EGL_TRANSPARENT_GREEN_VALUE, 0 }, 537 { EGL_TRANSPARENT_RED_VALUE, 0 }, 538 { EGL_BIND_TO_TEXTURE_RGBA, EGL_FALSE }, 539 { EGL_BIND_TO_TEXTURE_RGB, EGL_FALSE }, 540 { EGL_MIN_SWAP_INTERVAL, 1 }, 541 { EGL_MAX_SWAP_INTERVAL, 4 }, 542}; 543 544// These configs can override the base attribute list 545// NOTE: when adding a config here, don't forget to update eglCreate*Surface() 546 547static config_pair_t const config_0_attribute_list[] = { 548 { EGL_BUFFER_SIZE, 16 }, 549 { EGL_ALPHA_SIZE, 0 }, 550 { EGL_BLUE_SIZE, 5 }, 551 { EGL_GREEN_SIZE, 6 }, 552 { EGL_RED_SIZE, 5 }, 553 { EGL_DEPTH_SIZE, 0 }, 554 { EGL_CONFIG_ID, 0 }, 555 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 556}; 557 558static config_pair_t const config_1_attribute_list[] = { 559 { EGL_BUFFER_SIZE, 16 }, 560 { EGL_ALPHA_SIZE, 0 }, 561 { EGL_BLUE_SIZE, 5 }, 562 { EGL_GREEN_SIZE, 6 }, 563 { EGL_RED_SIZE, 5 }, 564 { EGL_DEPTH_SIZE, 16 }, 565 { EGL_CONFIG_ID, 1 }, 566 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 567}; 568 569static config_pair_t const config_2_attribute_list[] = { 570 { EGL_BUFFER_SIZE, 32 }, 571 { EGL_ALPHA_SIZE, 8 }, 572 { EGL_BLUE_SIZE, 8 }, 573 { EGL_GREEN_SIZE, 8 }, 574 { EGL_RED_SIZE, 8 }, 575 { EGL_DEPTH_SIZE, 0 }, 576 { EGL_CONFIG_ID, 2 }, 577 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 578}; 579 580static config_pair_t const config_3_attribute_list[] = { 581 { EGL_BUFFER_SIZE, 32 }, 582 { EGL_ALPHA_SIZE, 8 }, 583 { EGL_BLUE_SIZE, 8 }, 584 { EGL_GREEN_SIZE, 8 }, 585 { EGL_RED_SIZE, 8 }, 586 { EGL_DEPTH_SIZE, 16 }, 587 { EGL_CONFIG_ID, 3 }, 588 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 589}; 590 591static config_pair_t const config_4_attribute_list[] = { 592 { EGL_BUFFER_SIZE, 8 }, 593 { EGL_ALPHA_SIZE, 8 }, 594 { EGL_BLUE_SIZE, 0 }, 595 { EGL_GREEN_SIZE, 0 }, 596 { EGL_RED_SIZE, 0 }, 597 { EGL_DEPTH_SIZE, 0 }, 598 { EGL_CONFIG_ID, 4 }, 599 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 600}; 601 602static config_pair_t const config_5_attribute_list[] = { 603 { EGL_BUFFER_SIZE, 8 }, 604 { EGL_ALPHA_SIZE, 8 }, 605 { EGL_BLUE_SIZE, 0 }, 606 { EGL_GREEN_SIZE, 0 }, 607 { EGL_RED_SIZE, 0 }, 608 { EGL_DEPTH_SIZE, 16 }, 609 { EGL_CONFIG_ID, 5 }, 610 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT }, 611}; 612 613static configs_t const gConfigs[] = { 614 { config_0_attribute_list, NELEM(config_0_attribute_list) }, 615 { config_1_attribute_list, NELEM(config_1_attribute_list) }, 616 { config_2_attribute_list, NELEM(config_2_attribute_list) }, 617 { config_3_attribute_list, NELEM(config_3_attribute_list) }, 618 { config_4_attribute_list, NELEM(config_4_attribute_list) }, 619 { config_5_attribute_list, NELEM(config_5_attribute_list) }, 620}; 621 622static config_management_t const gConfigManagement[] = { 623 { EGL_BUFFER_SIZE, config_management_t::atLeast }, 624 { EGL_ALPHA_SIZE, config_management_t::atLeast }, 625 { EGL_BLUE_SIZE, config_management_t::atLeast }, 626 { EGL_GREEN_SIZE, config_management_t::atLeast }, 627 { EGL_RED_SIZE, config_management_t::atLeast }, 628 { EGL_DEPTH_SIZE, config_management_t::atLeast }, 629 { EGL_STENCIL_SIZE, config_management_t::atLeast }, 630 { EGL_CONFIG_CAVEAT, config_management_t::exact }, 631 { EGL_CONFIG_ID, config_management_t::exact }, 632 { EGL_LEVEL, config_management_t::exact }, 633 { EGL_MAX_PBUFFER_HEIGHT, config_management_t::exact }, 634 { EGL_MAX_PBUFFER_PIXELS, config_management_t::exact }, 635 { EGL_MAX_PBUFFER_WIDTH, config_management_t::exact }, 636 { EGL_NATIVE_RENDERABLE, config_management_t::exact }, 637 { EGL_NATIVE_VISUAL_ID, config_management_t::exact }, 638 { EGL_NATIVE_VISUAL_TYPE, config_management_t::exact }, 639 { EGL_SAMPLES, config_management_t::exact }, 640 { EGL_SAMPLE_BUFFERS, config_management_t::exact }, 641 { EGL_SURFACE_TYPE, config_management_t::mask }, 642 { EGL_TRANSPARENT_TYPE, config_management_t::exact }, 643 { EGL_TRANSPARENT_BLUE_VALUE, config_management_t::exact }, 644 { EGL_TRANSPARENT_GREEN_VALUE, config_management_t::exact }, 645 { EGL_TRANSPARENT_RED_VALUE, config_management_t::exact }, 646 { EGL_BIND_TO_TEXTURE_RGBA, config_management_t::exact }, 647 { EGL_BIND_TO_TEXTURE_RGB, config_management_t::exact }, 648 { EGL_MIN_SWAP_INTERVAL, config_management_t::exact }, 649 { EGL_MAX_SWAP_INTERVAL, config_management_t::exact }, 650}; 651 652static config_pair_t const config_defaults[] = { 653 { EGL_SURFACE_TYPE, EGL_WINDOW_BIT }, 654}; 655 656// ---------------------------------------------------------------------------- 657 658template<typename T> 659static int binarySearch(T const sortedArray[], int first, int last, EGLint key) 660{ 661 while (first <= last) { 662 int mid = (first + last) / 2; 663 if (key > sortedArray[mid].key) { 664 first = mid + 1; 665 } else if (key < sortedArray[mid].key) { 666 last = mid - 1; 667 } else { 668 return mid; 669 } 670 } 671 return -1; 672} 673 674static int isAttributeMatching(int i, EGLint attr, EGLint val) 675{ 676 // look for the attribute in all of our configs 677 config_pair_t const* configFound = gConfigs[i].array; 678 int index = binarySearch<config_pair_t>( 679 gConfigs[i].array, 680 0, gConfigs[i].size-1, 681 attr); 682 if (index < 0) { 683 configFound = config_base_attribute_list; 684 index = binarySearch<config_pair_t>( 685 config_base_attribute_list, 686 0, NELEM(config_base_attribute_list)-1, 687 attr); 688 } 689 if (index >= 0) { 690 // attribute found, check if this config could match 691 int cfgMgtIndex = binarySearch<config_management_t>( 692 gConfigManagement, 693 0, NELEM(gConfigManagement)-1, 694 attr); 695 if (index >= 0) { 696 bool match = gConfigManagement[cfgMgtIndex].match( 697 val, configFound[index].value); 698 if (match) { 699 // this config matches 700 return 1; 701 } 702 } else { 703 // attribute not found. this should NEVER happen. 704 } 705 } else { 706 // error, this attribute doesn't exist 707 } 708 return 0; 709} 710 711static int makeCurrent(ogles_context_t* gl) 712{ 713 ogles_context_t* current = (ogles_context_t*)getGlThreadSpecific(); 714 if (gl) { 715 egl_context_t* c = egl_context_t::context(gl); 716 if (c->flags & egl_context_t::IS_CURRENT) { 717 if (current != gl) { 718 // it is an error to set a context current, if it's already 719 // current to another thread 720 return -1; 721 } 722 } else { 723 if (current) { 724 // mark the current context as not current, and flush 725 glFlush(); 726 egl_context_t::context(current)->flags &= ~egl_context_t::IS_CURRENT; 727 } 728 } 729 if (!(c->flags & egl_context_t::IS_CURRENT)) { 730 // The context is not current, make it current! 731 setGlThreadSpecific(gl); 732 c->flags |= egl_context_t::IS_CURRENT; 733 } 734 } else { 735 if (current) { 736 // mark the current context as not current, and flush 737 glFlush(); 738 egl_context_t::context(current)->flags &= ~egl_context_t::IS_CURRENT; 739 } 740 // this thread has no context attached to it 741 setGlThreadSpecific(0); 742 } 743 return 0; 744} 745 746static EGLBoolean getConfigAttrib(EGLDisplay dpy, EGLConfig config, 747 EGLint attribute, EGLint *value) 748{ 749 size_t numConfigs = NELEM(gConfigs); 750 int index = (int)config; 751 if (uint32_t(index) >= numConfigs) 752 return setError(EGL_BAD_CONFIG, EGL_FALSE); 753 754 int attrIndex; 755 attrIndex = binarySearch<config_pair_t>( 756 gConfigs[index].array, 757 0, gConfigs[index].size-1, 758 attribute); 759 if (attrIndex>=0) { 760 *value = gConfigs[index].array[attrIndex].value; 761 return EGL_TRUE; 762 } 763 764 attrIndex = binarySearch<config_pair_t>( 765 config_base_attribute_list, 766 0, NELEM(config_base_attribute_list)-1, 767 attribute); 768 if (attrIndex>=0) { 769 *value = config_base_attribute_list[attrIndex].value; 770 return EGL_TRUE; 771 } 772 return setError(EGL_BAD_ATTRIBUTE, EGL_FALSE); 773} 774 775static EGLSurface createWindowSurface(EGLDisplay dpy, EGLConfig config, 776 NativeWindowType window, const EGLint *attrib_list) 777{ 778 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 779 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 780 if (window == 0) 781 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 782 783 EGLint surfaceType; 784 if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE) 785 return EGL_FALSE; 786 787 if (!(surfaceType & EGL_WINDOW_BIT)) 788 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 789 790 EGLint configID; 791 if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE) 792 return EGL_FALSE; 793 794 int32_t depthFormat; 795 int32_t pixelFormat; 796 switch(configID) { 797 case 0: 798 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 799 depthFormat = 0; 800 break; 801 case 1: 802 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 803 depthFormat = GGL_PIXEL_FORMAT_Z_16; 804 break; 805 case 2: 806 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 807 depthFormat = 0; 808 break; 809 case 3: 810 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 811 depthFormat = GGL_PIXEL_FORMAT_Z_16; 812 break; 813 case 4: 814 pixelFormat = GGL_PIXEL_FORMAT_A_8; 815 depthFormat = 0; 816 break; 817 case 5: 818 pixelFormat = GGL_PIXEL_FORMAT_A_8; 819 depthFormat = GGL_PIXEL_FORMAT_Z_16; 820 break; 821 default: 822 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 823 } 824 825 // FIXME: we don't have access to the pixelFormat here just yet. 826 // (it's possible that the surface is not fully initialized) 827 // maybe this should be done after the page-flip 828 //if (EGLint(info.format) != pixelFormat) 829 // return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 830 831 egl_surface_t* surface = 832 new egl_window_surface_t(dpy, config, depthFormat, 833 static_cast<egl_native_window_t*>(window)); 834 835 if (!surface->isValid()) { 836 // there was a problem in the ctor, the error 837 // flag has been set. 838 delete surface; 839 surface = 0; 840 } 841 return surface; 842} 843 844static EGLSurface createPixmapSurface(EGLDisplay dpy, EGLConfig config, 845 NativePixmapType pixmap, const EGLint *attrib_list) 846{ 847 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 848 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 849 if (pixmap == 0) 850 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 851 852 EGLint surfaceType; 853 if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE) 854 return EGL_FALSE; 855 856 if (!(surfaceType & EGL_PIXMAP_BIT)) 857 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 858 859 EGLint configID; 860 if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE) 861 return EGL_FALSE; 862 863 int32_t depthFormat; 864 int32_t pixelFormat; 865 switch(configID) { 866 case 0: 867 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 868 depthFormat = 0; 869 break; 870 case 1: 871 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 872 depthFormat = GGL_PIXEL_FORMAT_Z_16; 873 break; 874 case 2: 875 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 876 depthFormat = 0; 877 break; 878 case 3: 879 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 880 depthFormat = GGL_PIXEL_FORMAT_Z_16; 881 break; 882 case 4: 883 pixelFormat = GGL_PIXEL_FORMAT_A_8; 884 depthFormat = 0; 885 break; 886 case 5: 887 pixelFormat = GGL_PIXEL_FORMAT_A_8; 888 depthFormat = GGL_PIXEL_FORMAT_Z_16; 889 break; 890 default: 891 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 892 } 893 894 if (pixmap->format != pixelFormat) 895 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 896 897 egl_surface_t* surface = 898 new egl_pixmap_surface_t(dpy, config, depthFormat, 899 static_cast<egl_native_pixmap_t*>(pixmap)); 900 901 if (!surface->isValid()) { 902 // there was a problem in the ctor, the error 903 // flag has been set. 904 delete surface; 905 surface = 0; 906 } 907 return surface; 908} 909 910static EGLSurface createPbufferSurface(EGLDisplay dpy, EGLConfig config, 911 const EGLint *attrib_list) 912{ 913 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 914 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 915 916 EGLint surfaceType; 917 if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE) 918 return EGL_FALSE; 919 920 if (!(surfaceType & EGL_PBUFFER_BIT)) 921 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 922 923 EGLint configID; 924 if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE) 925 return EGL_FALSE; 926 927 int32_t depthFormat; 928 int32_t pixelFormat; 929 switch(configID) { 930 case 0: 931 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 932 depthFormat = 0; 933 break; 934 case 1: 935 pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 936 depthFormat = GGL_PIXEL_FORMAT_Z_16; 937 break; 938 case 2: 939 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 940 depthFormat = 0; 941 break; 942 case 3: 943 pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 944 depthFormat = GGL_PIXEL_FORMAT_Z_16; 945 break; 946 case 4: 947 pixelFormat = GGL_PIXEL_FORMAT_A_8; 948 depthFormat = 0; 949 break; 950 case 5: 951 pixelFormat = GGL_PIXEL_FORMAT_A_8; 952 depthFormat = GGL_PIXEL_FORMAT_Z_16; 953 break; 954 default: 955 return setError(EGL_BAD_MATCH, EGL_NO_SURFACE); 956 } 957 958 int32_t w = 0; 959 int32_t h = 0; 960 while (attrib_list[0]) { 961 if (attrib_list[0] == EGL_WIDTH) w = attrib_list[1]; 962 if (attrib_list[0] == EGL_HEIGHT) h = attrib_list[1]; 963 attrib_list+=2; 964 } 965 966 egl_surface_t* surface = 967 new egl_pbuffer_surface_t(dpy, config, depthFormat, w, h, pixelFormat); 968 969 if (!surface->isValid()) { 970 // there was a problem in the ctor, the error 971 // flag has been set. 972 delete surface; 973 surface = 0; 974 } 975 return surface; 976} 977 978// ---------------------------------------------------------------------------- 979}; // namespace android 980// ---------------------------------------------------------------------------- 981 982using namespace android; 983 984// ---------------------------------------------------------------------------- 985// Initialization 986// ---------------------------------------------------------------------------- 987 988EGLDisplay eglGetDisplay(NativeDisplayType display) 989{ 990#ifndef HAVE_ANDROID_OS 991 // this just needs to be done once 992 if (gGLKey == -1) { 993 pthread_mutex_lock(&gInitMutex); 994 if (gGLKey == -1) 995 pthread_key_create(&gGLKey, NULL); 996 pthread_mutex_unlock(&gInitMutex); 997 } 998#endif 999 if (display == EGL_DEFAULT_DISPLAY) { 1000 EGLDisplay dpy = (EGLDisplay)1; 1001 egl_display_t& d = egl_display_t::get_display(dpy); 1002 d.type = display; 1003 return dpy; 1004 } 1005 return EGL_NO_DISPLAY; 1006} 1007 1008EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor) 1009{ 1010 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1011 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1012 1013 EGLBoolean res = EGL_TRUE; 1014 egl_display_t& d = egl_display_t::get_display(dpy); 1015 1016 if (android_atomic_inc(&d.initialized) == 0) { 1017 // initialize stuff here if needed 1018 //pthread_mutex_lock(&gInitMutex); 1019 //pthread_mutex_unlock(&gInitMutex); 1020 } 1021 1022 if (res == EGL_TRUE) { 1023 if (major != NULL) *major = VERSION_MAJOR; 1024 if (minor != NULL) *minor = VERSION_MINOR; 1025 } 1026 return res; 1027} 1028 1029EGLBoolean eglTerminate(EGLDisplay dpy) 1030{ 1031 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1032 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1033 1034 EGLBoolean res = EGL_TRUE; 1035 egl_display_t& d = egl_display_t::get_display(dpy); 1036 if (android_atomic_dec(&d.initialized) == 1) { 1037 // TODO: destroy all resources (surfaces, contexts, etc...) 1038 //pthread_mutex_lock(&gInitMutex); 1039 //pthread_mutex_unlock(&gInitMutex); 1040 } 1041 return res; 1042} 1043 1044// ---------------------------------------------------------------------------- 1045// configuration 1046// ---------------------------------------------------------------------------- 1047 1048EGLBoolean eglGetConfigs( EGLDisplay dpy, 1049 EGLConfig *configs, 1050 EGLint config_size, EGLint *num_config) 1051{ 1052 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1053 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1054 1055 GLint numConfigs = NELEM(gConfigs); 1056 if (!configs) { 1057 *num_config = numConfigs; 1058 return EGL_TRUE; 1059 } 1060 GLint i; 1061 for (i=0 ; i<numConfigs && i<config_size ; i++) { 1062 *configs++ = (EGLConfig)i; 1063 } 1064 *num_config = i; 1065 return EGL_TRUE; 1066} 1067 1068EGLBoolean eglChooseConfig( EGLDisplay dpy, const EGLint *attrib_list, 1069 EGLConfig *configs, EGLint config_size, 1070 EGLint *num_config) 1071{ 1072 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1073 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1074 1075 if (ggl_unlikely(num_config==0)) { 1076 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1077 } 1078 1079 if (ggl_unlikely(attrib_list==0)) { 1080 *num_config = 0; 1081 return EGL_TRUE; 1082 } 1083 1084 int numAttributes = 0; 1085 int numConfigs = NELEM(gConfigs); 1086 uint32_t possibleMatch = (1<<numConfigs)-1; 1087 while(possibleMatch && *attrib_list != EGL_NONE) { 1088 numAttributes++; 1089 EGLint attr = *attrib_list++; 1090 EGLint val = *attrib_list++; 1091 for (int i=0 ; i<numConfigs ; i++) { 1092 if (!(possibleMatch & (1<<i))) 1093 continue; 1094 if (isAttributeMatching(i, attr, val) == 0) { 1095 possibleMatch &= ~(1<<i); 1096 } 1097 } 1098 } 1099 1100 // now, handle the attributes which have a useful default value 1101 for (size_t j=0 ; j<NELEM(config_defaults) ; j++) { 1102 // see if this attribute was specified, if not apply its 1103 // default value 1104 if (binarySearch<config_pair_t>( 1105 (config_pair_t const*)attrib_list, 1106 0, numAttributes, 1107 config_defaults[j].key) < 0) 1108 { 1109 for (int i=0 ; i<numConfigs ; i++) { 1110 if (!(possibleMatch & (1<<i))) 1111 continue; 1112 if (isAttributeMatching(i, 1113 config_defaults[j].key, 1114 config_defaults[j].value) == 0) 1115 { 1116 possibleMatch &= ~(1<<i); 1117 } 1118 } 1119 } 1120 } 1121 1122 // return the configurations found 1123 int n=0; 1124 if (possibleMatch) { 1125 if (configs) { 1126 for (int i=0 ; config_size && i<numConfigs ; i++) { 1127 if (possibleMatch & (1<<i)) { 1128 *configs++ = (EGLConfig)i; 1129 config_size--; 1130 n++; 1131 } 1132 } 1133 } else { 1134 for (int i=0 ; i<numConfigs ; i++) { 1135 if (possibleMatch & (1<<i)) { 1136 n++; 1137 } 1138 } 1139 } 1140 } 1141 *num_config = n; 1142 return EGL_TRUE; 1143} 1144 1145EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config, 1146 EGLint attribute, EGLint *value) 1147{ 1148 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1149 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1150 1151 return getConfigAttrib(dpy, config, attribute, value); 1152} 1153 1154// ---------------------------------------------------------------------------- 1155// surfaces 1156// ---------------------------------------------------------------------------- 1157 1158EGLSurface eglCreateWindowSurface( EGLDisplay dpy, EGLConfig config, 1159 NativeWindowType window, 1160 const EGLint *attrib_list) 1161{ 1162 return createWindowSurface(dpy, config, window, attrib_list); 1163} 1164 1165EGLSurface eglCreatePixmapSurface( EGLDisplay dpy, EGLConfig config, 1166 NativePixmapType pixmap, 1167 const EGLint *attrib_list) 1168{ 1169 return createPixmapSurface(dpy, config, pixmap, attrib_list); 1170} 1171 1172EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config, 1173 const EGLint *attrib_list) 1174{ 1175 return createPbufferSurface(dpy, config, attrib_list); 1176} 1177 1178EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface eglSurface) 1179{ 1180 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1181 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1182 if (eglSurface != EGL_NO_SURFACE) { 1183 egl_surface_t* surface( static_cast<egl_surface_t*>(eglSurface) ); 1184 if (surface->magic != egl_surface_t::MAGIC) 1185 return setError(EGL_BAD_SURFACE, EGL_FALSE); 1186 if (surface->dpy != dpy) 1187 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1188 delete surface; 1189 } 1190 return EGL_TRUE; 1191} 1192 1193EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface eglSurface, 1194 EGLint attribute, EGLint *value) 1195{ 1196 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1197 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1198 egl_surface_t* surface = static_cast<egl_surface_t*>(eglSurface); 1199 if (surface->dpy != dpy) 1200 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1201 1202 EGLBoolean ret = EGL_TRUE; 1203 switch (attribute) { 1204 case EGL_CONFIG_ID: 1205 ret = getConfigAttrib(dpy, surface->config, EGL_CONFIG_ID, value); 1206 break; 1207 case EGL_WIDTH: 1208 *value = surface->getWidth(); 1209 break; 1210 case EGL_HEIGHT: 1211 *value = surface->getHeight(); 1212 break; 1213 case EGL_LARGEST_PBUFFER: 1214 // not modified for a window or pixmap surface 1215 break; 1216 case EGL_TEXTURE_FORMAT: 1217 *value = EGL_NO_TEXTURE; 1218 break; 1219 case EGL_TEXTURE_TARGET: 1220 *value = EGL_NO_TEXTURE; 1221 break; 1222 case EGL_MIPMAP_TEXTURE: 1223 *value = EGL_FALSE; 1224 break; 1225 case EGL_MIPMAP_LEVEL: 1226 *value = 0; 1227 break; 1228 case EGL_RENDER_BUFFER: 1229 // TODO: return the real RENDER_BUFFER here 1230 *value = EGL_BACK_BUFFER; 1231 break; 1232 case EGL_HORIZONTAL_RESOLUTION: 1233 // pixel/mm * EGL_DISPLAY_SCALING 1234 *value = surface->getHorizontalResolution(); 1235 break; 1236 case EGL_VERTICAL_RESOLUTION: 1237 // pixel/mm * EGL_DISPLAY_SCALING 1238 *value = surface->getVerticalResolution(); 1239 break; 1240 case EGL_PIXEL_ASPECT_RATIO: { 1241 // w/h * EGL_DISPLAY_SCALING 1242 int wr = surface->getHorizontalResolution(); 1243 int hr = surface->getVerticalResolution(); 1244 *value = (wr * EGL_DISPLAY_SCALING) / hr; 1245 } break; 1246 case EGL_SWAP_BEHAVIOR: 1247 *value = surface->getSwapBehavior(); 1248 break; 1249 default: 1250 ret = setError(EGL_BAD_ATTRIBUTE, EGL_FALSE); 1251 } 1252 return ret; 1253} 1254 1255EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config, 1256 EGLContext share_list, const EGLint *attrib_list) 1257{ 1258 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1259 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 1260 1261 ogles_context_t* gl = ogles_init(sizeof(egl_context_t)); 1262 if (!gl) return setError(EGL_BAD_ALLOC, EGL_NO_CONTEXT); 1263 1264 egl_context_t* c = static_cast<egl_context_t*>(gl->rasterizer.base); 1265 c->flags = egl_context_t::NEVER_CURRENT; 1266 c->dpy = dpy; 1267 c->config = config; 1268 c->read = 0; 1269 c->draw = 0; 1270 return (EGLContext)gl; 1271} 1272 1273EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx) 1274{ 1275 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1276 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1277 egl_context_t* c = egl_context_t::context(ctx); 1278 if (c->flags & egl_context_t::IS_CURRENT) 1279 setGlThreadSpecific(0); 1280 ogles_uninit((ogles_context_t*)ctx); 1281 return EGL_TRUE; 1282} 1283 1284EGLBoolean eglMakeCurrent( EGLDisplay dpy, EGLSurface draw, 1285 EGLSurface read, EGLContext ctx) 1286{ 1287 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1288 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1289 if (draw) { 1290 egl_surface_t* s = (egl_surface_t*)draw; 1291 if (s->dpy != dpy) 1292 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1293 // TODO: check that draw and read are compatible with the context 1294 } 1295 1296 EGLContext current_ctx = EGL_NO_CONTEXT; 1297 1298 if ((read == EGL_NO_SURFACE && draw == EGL_NO_SURFACE) && (ctx != EGL_NO_CONTEXT)) 1299 return setError(EGL_BAD_MATCH, EGL_FALSE); 1300 1301 if ((read != EGL_NO_SURFACE || draw != EGL_NO_SURFACE) && (ctx == EGL_NO_CONTEXT)) 1302 return setError(EGL_BAD_MATCH, EGL_FALSE); 1303 1304 if (ctx == EGL_NO_CONTEXT) { 1305 // if we're detaching, we need the current context 1306 current_ctx = (EGLContext)getGlThreadSpecific(); 1307 } else { 1308 egl_context_t* c = egl_context_t::context(ctx); 1309 egl_surface_t* d = (egl_surface_t*)draw; 1310 egl_surface_t* r = (egl_surface_t*)read; 1311 if ((d && d->ctx && d->ctx != ctx) || 1312 (r && r->ctx && r->ctx != ctx)) { 1313 // once of the surface is bound to a context in another thread 1314 return setError(EGL_BAD_ACCESS, EGL_FALSE); 1315 } 1316 } 1317 1318 // TODO: call connect / disconnect on the surface 1319 1320 ogles_context_t* gl = (ogles_context_t*)ctx; 1321 if (makeCurrent(gl) == 0) { 1322 if (ctx) { 1323 egl_context_t* c = egl_context_t::context(ctx); 1324 egl_surface_t* d = (egl_surface_t*)draw; 1325 egl_surface_t* r = (egl_surface_t*)read; 1326 c->read = read; 1327 c->draw = draw; 1328 if (c->flags & egl_context_t::NEVER_CURRENT) { 1329 c->flags &= ~egl_context_t::NEVER_CURRENT; 1330 GLint w = 0; 1331 GLint h = 0; 1332 if (draw) { 1333 w = d->getWidth(); 1334 h = d->getHeight(); 1335 } 1336 ogles_surfaceport(gl, 0, 0); 1337 ogles_viewport(gl, 0, 0, w, h); 1338 ogles_scissor(gl, 0, 0, w, h); 1339 } 1340 if (d) { 1341 d->ctx = ctx; 1342 d->bindDrawSurface(gl); 1343 } 1344 if (r) { 1345 r->ctx = ctx; 1346 r->bindReadSurface(gl); 1347 } 1348 } else { 1349 // if surfaces were bound to the context bound to this thread 1350 // mark then as unbound. 1351 if (current_ctx) { 1352 egl_context_t* c = egl_context_t::context(current_ctx); 1353 egl_surface_t* d = (egl_surface_t*)c->draw; 1354 egl_surface_t* r = (egl_surface_t*)c->read; 1355 if (d) d->ctx = EGL_NO_CONTEXT; 1356 if (r) r->ctx = EGL_NO_CONTEXT; 1357 } 1358 } 1359 return EGL_TRUE; 1360 } 1361 return setError(EGL_BAD_ACCESS, EGL_FALSE); 1362} 1363 1364EGLContext eglGetCurrentContext(void) 1365{ 1366 // eglGetCurrentContext returns the current EGL rendering context, 1367 // as specified by eglMakeCurrent. If no context is current, 1368 // EGL_NO_CONTEXT is returned. 1369 return (EGLContext)getGlThreadSpecific(); 1370} 1371 1372EGLSurface eglGetCurrentSurface(EGLint readdraw) 1373{ 1374 // eglGetCurrentSurface returns the read or draw surface attached 1375 // to the current EGL rendering context, as specified by eglMakeCurrent. 1376 // If no context is current, EGL_NO_SURFACE is returned. 1377 EGLContext ctx = (EGLContext)getGlThreadSpecific(); 1378 if (ctx == EGL_NO_CONTEXT) return EGL_NO_SURFACE; 1379 egl_context_t* c = egl_context_t::context(ctx); 1380 if (readdraw == EGL_READ) { 1381 return c->read; 1382 } else if (readdraw == EGL_DRAW) { 1383 return c->draw; 1384 } 1385 return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE); 1386} 1387 1388EGLDisplay eglGetCurrentDisplay(void) 1389{ 1390 // eglGetCurrentDisplay returns the current EGL display connection 1391 // for the current EGL rendering context, as specified by eglMakeCurrent. 1392 // If no context is current, EGL_NO_DISPLAY is returned. 1393 EGLContext ctx = (EGLContext)getGlThreadSpecific(); 1394 if (ctx == EGL_NO_CONTEXT) return EGL_NO_DISPLAY; 1395 egl_context_t* c = egl_context_t::context(ctx); 1396 return c->dpy; 1397} 1398 1399EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx, 1400 EGLint attribute, EGLint *value) 1401{ 1402 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1403 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1404 egl_context_t* c = egl_context_t::context(ctx); 1405 switch (attribute) { 1406 case EGL_CONFIG_ID: 1407 // Returns the ID of the EGL frame buffer configuration with 1408 // respect to which the context was created 1409 return getConfigAttrib(dpy, c->config, EGL_CONFIG_ID, value); 1410 } 1411 return setError(EGL_BAD_ATTRIBUTE, EGL_FALSE); 1412} 1413 1414EGLBoolean eglWaitGL(void) 1415{ 1416 return EGL_TRUE; 1417} 1418 1419EGLBoolean eglWaitNative(EGLint engine) 1420{ 1421 return EGL_TRUE; 1422} 1423 1424EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw) 1425{ 1426 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1427 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1428 1429 egl_surface_t* d = static_cast<egl_surface_t*>(draw); 1430 if (d->dpy != dpy) 1431 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1432 1433 // post the surface 1434 d->swapBuffers(); 1435 1436 // if it's bound to a context, update the buffer 1437 if (d->ctx != EGL_NO_CONTEXT) { 1438 d->bindDrawSurface((ogles_context_t*)d->ctx); 1439 // if this surface is also the read surface of the context 1440 // it is bound to, make sure to update the read buffer as well. 1441 // The EGL spec is a little unclear about this. 1442 egl_context_t* c = egl_context_t::context(d->ctx); 1443 if (c->read == draw) { 1444 d->bindReadSurface((ogles_context_t*)d->ctx); 1445 } 1446 } 1447 1448 return EGL_TRUE; 1449} 1450 1451EGLBoolean eglCopyBuffers( EGLDisplay dpy, EGLSurface surface, 1452 NativePixmapType target) 1453{ 1454 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1455 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1456 // TODO: eglCopyBuffers() 1457 return EGL_FALSE; 1458} 1459 1460EGLint eglGetError(void) 1461{ 1462 return getError(); 1463} 1464 1465const char* eglQueryString(EGLDisplay dpy, EGLint name) 1466{ 1467 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1468 return setError(EGL_BAD_DISPLAY, (const char*)0); 1469 1470 switch (name) { 1471 case EGL_VENDOR: 1472 return gVendorString; 1473 case EGL_VERSION: 1474 return gVersionString; 1475 case EGL_EXTENSIONS: 1476 return gExtensionsString; 1477 case EGL_CLIENT_APIS: 1478 return gClientApiString; 1479 } 1480 return setError(EGL_BAD_PARAMETER, (const char *)0); 1481} 1482 1483// ---------------------------------------------------------------------------- 1484// EGL 1.1 1485// ---------------------------------------------------------------------------- 1486 1487EGLBoolean eglSurfaceAttrib( 1488 EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value) 1489{ 1490 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1491 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1492 // TODO: eglSurfaceAttrib() 1493 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1494} 1495 1496EGLBoolean eglBindTexImage( 1497 EGLDisplay dpy, EGLSurface surface, EGLint buffer) 1498{ 1499 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1500 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1501 // TODO: eglBindTexImage() 1502 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1503} 1504 1505EGLBoolean eglReleaseTexImage( 1506 EGLDisplay dpy, EGLSurface surface, EGLint buffer) 1507{ 1508 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1509 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1510 // TODO: eglReleaseTexImage() 1511 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1512} 1513 1514EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval) 1515{ 1516 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1517 return setError(EGL_BAD_DISPLAY, EGL_FALSE); 1518 // TODO: eglSwapInterval() 1519 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1520} 1521 1522// ---------------------------------------------------------------------------- 1523// EGL 1.2 1524// ---------------------------------------------------------------------------- 1525 1526EGLBoolean eglBindAPI(EGLenum api) 1527{ 1528 if (api != EGL_OPENGL_ES_API) 1529 return setError(EGL_BAD_PARAMETER, EGL_FALSE); 1530 return EGL_TRUE; 1531} 1532 1533EGLenum eglQueryAPI(void) 1534{ 1535 return EGL_OPENGL_ES_API; 1536} 1537 1538EGLBoolean eglWaitClient(void) 1539{ 1540 glFinish(); 1541 return EGL_TRUE; 1542} 1543 1544EGLBoolean eglReleaseThread(void) 1545{ 1546 // TODO: eglReleaseThread() 1547 return EGL_TRUE; 1548} 1549 1550EGLSurface eglCreatePbufferFromClientBuffer( 1551 EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer, 1552 EGLConfig config, const EGLint *attrib_list) 1553{ 1554 if (egl_display_t::is_valid(dpy) == EGL_FALSE) 1555 return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE); 1556 // TODO: eglCreatePbufferFromClientBuffer() 1557 return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE); 1558} 1559 1560// ---------------------------------------------------------------------------- 1561// Android extensions 1562// ---------------------------------------------------------------------------- 1563 1564void (*eglGetProcAddress (const char *procname))() 1565{ 1566 extention_map_t const * const map = gExtentionMap; 1567 for (uint32_t i=0 ; i<NELEM(gExtentionMap) ; i++) { 1568 if (!strcmp(procname, map[i].name)) { 1569 return map[i].address; 1570 } 1571 } 1572 return NULL; 1573} 1574