gpu/gles2_conform_support/egl/egl.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <EGL/egl.h>
   6
   7 #include "base/command_line.h"
   8 #include "gpu/command_buffer/client/gles2_lib.h"
   9 #include "gpu/gles2_conform_support/egl/display.h"
  10 #include "ui/gl/gl_context.h"
  11 #include "ui/gl/gl_surface.h"
  12
  13 #if REGAL_STATIC_EGL
  14 extern "C" {
  15
  16 typedef EGLContext RegalSystemContext;
  17 #define REGAL_DECL
  18 REGAL_DECL void RegalMakeCurrent( RegalSystemContext ctx );
  19
  20 }  // extern "C"
  21 #endif
  22
  23 namespace {
  24 void SetCurrentError(EGLint error_code) {
  25 }
  26
  27 template<typename T>
  28 T EglError(EGLint error_code, T return_value) {
  29   SetCurrentError(error_code);
  30   return return_value;
  31 }
  32
  33 template<typename T>
  34 T EglSuccess(T return_value) {
  35   SetCurrentError(EGL_SUCCESS);
  36   return return_value;
  37 }
  38
  39 EGLint ValidateDisplay(EGLDisplay dpy) {
  40   if (dpy == EGL_NO_DISPLAY)
  41     return EGL_BAD_DISPLAY;
  42
  43   egl::Display* display = static_cast<egl::Display*>(dpy);
  44   if (!display->is_initialized())
  45     return EGL_NOT_INITIALIZED;
  46
  47   return EGL_SUCCESS;
  48 }
  49
  50 EGLint ValidateDisplayConfig(EGLDisplay dpy, EGLConfig config) {
  51   EGLint error_code = ValidateDisplay(dpy);
  52   if (error_code != EGL_SUCCESS)
  53     return error_code;
  54
  55   egl::Display* display = static_cast<egl::Display*>(dpy);
  56   if (!display->IsValidConfig(config))
  57     return EGL_BAD_CONFIG;
  58
  59   return EGL_SUCCESS;
  60 }
  61
  62 EGLint ValidateDisplaySurface(EGLDisplay dpy, EGLSurface surface) {
  63   EGLint error_code = ValidateDisplay(dpy);
  64   if (error_code != EGL_SUCCESS)
  65     return error_code;
  66
  67   egl::Display* display = static_cast<egl::Display*>(dpy);
  68   if (!display->IsValidSurface(surface))
  69     return EGL_BAD_SURFACE;
  70
  71   return EGL_SUCCESS;
  72 }
  73
  74 EGLint ValidateDisplayContext(EGLDisplay dpy, EGLContext context) {
  75   EGLint error_code = ValidateDisplay(dpy);
  76   if (error_code != EGL_SUCCESS)
  77     return error_code;
  78
  79   egl::Display* display = static_cast<egl::Display*>(dpy);
  80   if (!display->IsValidContext(context))
  81     return EGL_BAD_CONTEXT;
  82
  83   return EGL_SUCCESS;
  84 }
  85 }  // namespace
  86
  87 extern "C" {
  88 EGLint eglGetError() {
  89   // TODO(alokp): Fix me.
  90   return EGL_SUCCESS;
  91 }
  92
  93 EGLDisplay eglGetDisplay(EGLNativeDisplayType display_id) {
  94   return new egl::Display(display_id);
  95 }
  96
  97 EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor) {
  98   if (dpy == EGL_NO_DISPLAY)
  99     return EglError(EGL_BAD_DISPLAY, EGL_FALSE);
 100
 101   egl::Display* display = static_cast<egl::Display*>(dpy);
 102   if (!display->Initialize())
 103     return EglError(EGL_NOT_INITIALIZED, EGL_FALSE);
 104
 105   int argc = 1;
 106   const char* const argv[] = {
 107     "dummy"
 108   };
 109   base::CommandLine::Init(argc, argv);
 110   gfx::GLSurface::InitializeOneOff();
 111
 112   *major = 1;
 113   *minor = 4;
 114   return EglSuccess(EGL_TRUE);
 115 }
 116
 117 EGLBoolean eglTerminate(EGLDisplay dpy) {
 118   EGLint error_code = ValidateDisplay(dpy);
 119   if (error_code != EGL_SUCCESS)
 120     return EglError(error_code, EGL_FALSE);
 121
 122   egl::Display* display = static_cast<egl::Display*>(dpy);
 123   delete display;
 124
 125   return EglSuccess(EGL_TRUE);
 126 }
 127
 128 const char* eglQueryString(EGLDisplay dpy, EGLint name) {
 129   EGLint error_code = ValidateDisplay(dpy);
 130   if (error_code != EGL_SUCCESS)
 131     return EglError(error_code, static_cast<const char*>(NULL));
 132
 133   switch (name) {
 134     case EGL_CLIENT_APIS:
 135       return EglSuccess("OpenGL_ES");
 136     case EGL_EXTENSIONS:
 137       return EglSuccess("");
 138     case EGL_VENDOR:
 139       return EglSuccess("Google Inc.");
 140     case EGL_VERSION:
 141       return EglSuccess("1.4");
 142     default:
 143       return EglError(EGL_BAD_PARAMETER, static_cast<const char*>(NULL));
 144   }
 145 }
 146
 147 EGLBoolean eglChooseConfig(EGLDisplay dpy,
 148                            const EGLint* attrib_list,
 149                            EGLConfig* configs,
 150                            EGLint config_size,
 151                            EGLint* num_config) {
 152   EGLint error_code = ValidateDisplay(dpy);
 153   if (error_code != EGL_SUCCESS)
 154     return EglError(error_code, EGL_FALSE);
 155
 156   if (num_config == NULL)
 157     return EglError(EGL_BAD_PARAMETER, EGL_FALSE);
 158
 159   egl::Display* display = static_cast<egl::Display*>(dpy);
 160   if (!display->ChooseConfigs(configs, config_size, num_config))
 161     return EglError(EGL_BAD_ATTRIBUTE, EGL_FALSE);
 162
 163   return EglSuccess(EGL_TRUE);
 164 }
 165
 166 EGLBoolean eglGetConfigs(EGLDisplay dpy,
 167                          EGLConfig* configs,
 168                          EGLint config_size,
 169                          EGLint* num_config) {
 170   EGLint error_code = ValidateDisplay(dpy);
 171   if (error_code != EGL_SUCCESS)
 172     return EglError(error_code, EGL_FALSE);
 173
 174   if (num_config == NULL)
 175     return EglError(EGL_BAD_PARAMETER, EGL_FALSE);
 176
 177   egl::Display* display = static_cast<egl::Display*>(dpy);
 178   if (!display->GetConfigs(configs, config_size, num_config))
 179     return EglError(EGL_BAD_ATTRIBUTE, EGL_FALSE);
 180
 181   return EglSuccess(EGL_TRUE);
 182 }
 183
 184 EGLBoolean eglGetConfigAttrib(EGLDisplay dpy,
 185                               EGLConfig config,
 186                               EGLint attribute,
 187                               EGLint* value) {
 188   EGLint error_code = ValidateDisplayConfig(dpy, config);
 189   if (error_code != EGL_SUCCESS)
 190     return EglError(error_code, EGL_FALSE);
 191
 192   egl::Display* display = static_cast<egl::Display*>(dpy);
 193   if (!display->GetConfigAttrib(config, attribute, value))
 194     return EglError(EGL_BAD_ATTRIBUTE, EGL_FALSE);
 195
 196   return EglSuccess(EGL_TRUE);
 197 }
 198
 199 EGLSurface eglCreateWindowSurface(EGLDisplay dpy,
 200                                   EGLConfig config,
 201                                   EGLNativeWindowType win,
 202                                   const EGLint* attrib_list) {
 203   EGLint error_code = ValidateDisplayConfig(dpy, config);
 204   if (error_code != EGL_SUCCESS)
 205     return EglError(error_code, EGL_NO_SURFACE);
 206
 207   egl::Display* display = static_cast<egl::Display*>(dpy);
 208   if (!display->IsValidNativeWindow(win))
 209     return EglError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
 210
 211   EGLSurface surface = display->CreateWindowSurface(config, win, attrib_list);
 212   if (surface == EGL_NO_SURFACE)
 213     return EglError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
 214
 215   return EglSuccess(surface);
 216 }
 217
 218 EGLSurface eglCreatePbufferSurface(EGLDisplay dpy,
 219                                    EGLConfig config,
 220                                    const EGLint* attrib_list) {
 221   return EGL_NO_SURFACE;
 222 }
 223
 224 EGLSurface eglCreatePixmapSurface(EGLDisplay dpy,
 225                                   EGLConfig config,
 226                                   EGLNativePixmapType pixmap,
 227                                   const EGLint* attrib_list) {
 228   return EGL_NO_SURFACE;
 229 }
 230
 231 EGLBoolean eglDestroySurface(EGLDisplay dpy,
 232                              EGLSurface surface) {
 233   EGLint error_code = ValidateDisplaySurface(dpy, surface);
 234   if (error_code != EGL_SUCCESS)
 235     return EglError(error_code, EGL_FALSE);
 236
 237   egl::Display* display = static_cast<egl::Display*>(dpy);
 238   display->DestroySurface(surface);
 239   return EglSuccess(EGL_TRUE);
 240 }
 241
 242 EGLBoolean eglQuerySurface(EGLDisplay dpy,
 243                            EGLSurface surface,
 244                            EGLint attribute,
 245                            EGLint* value) {
 246   return EGL_FALSE;
 247 }
 248
 249 EGLBoolean eglBindAPI(EGLenum api) {
 250   return EGL_FALSE;
 251 }
 252
 253 EGLenum eglQueryAPI() {
 254   return EGL_OPENGL_ES_API;
 255 }
 256
 257 EGLBoolean eglWaitClient(void) {
 258   return EGL_FALSE;
 259 }
 260
 261 EGLBoolean eglReleaseThread(void) {
 262   return EGL_FALSE;
 263 }
 264
 265 EGLSurface eglCreatePbufferFromClientBuffer(EGLDisplay dpy,
 266                                             EGLenum buftype,
 267                                             EGLClientBuffer buffer,
 268                                             EGLConfig config,
 269                                             const EGLint* attrib_list) {
 270   return EGL_NO_SURFACE;
 271 }
 272
 273 EGLBoolean eglSurfaceAttrib(EGLDisplay dpy,
 274                             EGLSurface surface,
 275                             EGLint attribute,
 276                             EGLint value) {
 277   return EGL_FALSE;
 278 }
 279
 280 EGLBoolean eglBindTexImage(EGLDisplay dpy,
 281                            EGLSurface surface,
 282                            EGLint buffer) {
 283   return EGL_FALSE;
 284 }
 285
 286 EGLBoolean eglReleaseTexImage(EGLDisplay dpy,
 287                               EGLSurface surface,
 288                               EGLint buffer) {
 289   return EGL_FALSE;
 290 }
 291
 292 EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval) {
 293   return EGL_FALSE;
 294 }
 295
 296 EGLContext eglCreateContext(EGLDisplay dpy,
 297                             EGLConfig config,
 298                             EGLContext share_context,
 299                             const EGLint* attrib_list) {
 300   EGLint error_code = ValidateDisplayConfig(dpy, config);
 301   if (error_code != EGL_SUCCESS)
 302     return EglError(error_code, EGL_NO_CONTEXT);
 303
 304   if (share_context != EGL_NO_CONTEXT) {
 305     error_code = ValidateDisplayContext(dpy, share_context);
 306     if (error_code != EGL_SUCCESS)
 307       return EglError(error_code, EGL_NO_CONTEXT);
 308   }
 309
 310   egl::Display* display = static_cast<egl::Display*>(dpy);
 311   EGLContext context = display->CreateContext(
 312       config, share_context, attrib_list);
 313   if (context == EGL_NO_CONTEXT)
 314     return EglError(EGL_BAD_ALLOC, EGL_NO_CONTEXT);
 315
 316   return EglSuccess(context);
 317 }
 318
 319 EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx) {
 320   EGLint error_code = ValidateDisplayContext(dpy, ctx);
 321   if (error_code != EGL_SUCCESS)
 322     return EglError(error_code, EGL_FALSE);
 323
 324   egl::Display* display = static_cast<egl::Display*>(dpy);
 325   display->DestroyContext(ctx);
 326   return EGL_TRUE;
 327 }
 328
 329 EGLBoolean eglMakeCurrent(EGLDisplay dpy,
 330                           EGLSurface draw,
 331                           EGLSurface read,
 332                           EGLContext ctx) {
 333   if (ctx != EGL_NO_CONTEXT) {
 334     EGLint error_code = ValidateDisplaySurface(dpy, draw);
 335     if (error_code != EGL_SUCCESS)
 336       return EglError(error_code, EGL_FALSE);
 337     error_code = ValidateDisplaySurface(dpy, read);
 338     if (error_code != EGL_SUCCESS)
 339       return EglError(error_code, EGL_FALSE);
 340     error_code = ValidateDisplayContext(dpy, ctx);
 341     if (error_code != EGL_SUCCESS)
 342       return EglError(error_code, EGL_FALSE);
 343   }
 344
 345   egl::Display* display = static_cast<egl::Display*>(dpy);
 346   if (!display->MakeCurrent(draw, read, ctx))
 347     return EglError(EGL_CONTEXT_LOST, EGL_FALSE);
 348
 349 #if REGAL_STATIC_EGL
 350   RegalMakeCurrent(ctx);
 351 #endif
 352
 353   return EGL_TRUE;
 354 }
 355
 356 EGLContext eglGetCurrentContext() {
 357   return EGL_NO_CONTEXT;
 358 }
 359
 360 EGLSurface eglGetCurrentSurface(EGLint readdraw) {
 361   return EGL_NO_SURFACE;
 362 }
 363
 364 EGLDisplay eglGetCurrentDisplay() {
 365   return EGL_NO_DISPLAY;
 366 }
 367
 368 EGLBoolean eglQueryContext(EGLDisplay dpy,
 369                            EGLContext ctx,
 370                            EGLint attribute,
 371                            EGLint* value) {
 372   return EGL_FALSE;
 373 }
 374
 375 EGLBoolean eglWaitGL() {
 376   return EGL_FALSE;
 377 }
 378
 379 EGLBoolean eglWaitNative(EGLint engine) {
 380   return EGL_FALSE;
 381 }
 382
 383 EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface surface) {
 384   EGLint error_code = ValidateDisplaySurface(dpy, surface);
 385   if (error_code != EGL_SUCCESS)
 386     return EglError(error_code, EGL_FALSE);
 387
 388   egl::Display* display = static_cast<egl::Display*>(dpy);
 389   display->SwapBuffers(surface);
 390   return EglSuccess(EGL_TRUE);
 391 }
 392
 393 EGLBoolean eglCopyBuffers(EGLDisplay dpy,
 394                           EGLSurface surface,
 395                           EGLNativePixmapType target) {
 396   return EGL_FALSE;
 397 }
 398
 399 /* Now, define eglGetProcAddress using the generic function ptr. type */
 400 __eglMustCastToProperFunctionPointerType
 401 eglGetProcAddress(const char* procname) {
 402   return gles2::GetGLFunctionPointer(procname);
 403 }
 404 }  // extern "C"