src/egl/main/eglsurface.c

   1 /**
   2  * Surface-related functions.
   3  */
   4
   5
   6 #include <assert.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include "egldisplay.h"
  10 #include "eglcontext.h"
  11 #include "eglconfig.h"
  12 #include "eglcurrent.h"
  13 #include "egllog.h"
  14 #include "eglsurface.h"
  15
  16
  17 static void
  18 _eglClampSwapInterval(_EGLSurface *surf, EGLint interval)
  19 {
  20    EGLint bound = surf->Config->MaxSwapInterval;
  21    if (interval >= bound) {
  22       interval = bound;
  23    }
  24    else {
  25       bound = surf->Config->MinSwapInterval;
  26       if (interval < bound)
  27          interval = bound;
  28    }
  29    surf->SwapInterval = interval;
  30 }
  31
  32
  33 #ifdef EGL_MESA_screen_surface
  34 static EGLint
  35 _eglParseScreenSurfaceAttribList(_EGLSurface *surf, const EGLint *attrib_list)
  36 {
  37    EGLint i, err = EGL_SUCCESS;
  38
  39    if (!attrib_list)
  40       return EGL_SUCCESS;
  41
  42    for (i = 0; attrib_list[i] != EGL_NONE; i++) {
  43       EGLint attr = attrib_list[i++];
  44       EGLint val = attrib_list[i];
  45
  46       switch (attr) {
  47       case EGL_WIDTH:
  48          if (val < 0) {
  49             err = EGL_BAD_PARAMETER;
  50             break;
  51          }
  52          surf->Width = val;
  53          break;
  54       case EGL_HEIGHT:
  55          if (val < 0) {
  56             err = EGL_BAD_PARAMETER;
  57             break;
  58          }
  59          surf->Height = val;
  60          break;
  61       default:
  62          err = EGL_BAD_ATTRIBUTE;
  63          break;
  64       }
  65
  66       if (err != EGL_SUCCESS) {
  67          _eglLog(_EGL_WARNING, "bad surface attribute 0x%04x", attr);
  68          break;
  69       }
  70    }
  71
  72    return err;
  73 }
  74 #endif /* EGL_MESA_screen_surface */
  75
  76
  77 /**
  78  * Parse the list of surface attributes and return the proper error code.
  79  */
  80 static EGLint
  81 _eglParseSurfaceAttribList(_EGLSurface *surf, const EGLint *attrib_list)
  82 {
  83    _EGLDisplay *dpy = surf->Resource.Display;
  84    EGLint type = surf->Type;
  85    EGLint texture_type = EGL_PBUFFER_BIT;
  86    EGLint i, err = EGL_SUCCESS;
  87
  88    if (!attrib_list)
  89       return EGL_SUCCESS;
  90
  91 #ifdef EGL_MESA_screen_surface
  92    if (type == EGL_SCREEN_BIT_MESA)
  93       return _eglParseScreenSurfaceAttribList(surf, attrib_list);
  94 #endif
  95
  96    if (dpy->Extensions.NOK_texture_from_pixmap)
  97       texture_type |= EGL_PIXMAP_BIT;
  98
  99    for (i = 0; attrib_list[i] != EGL_NONE; i++) {
 100       EGLint attr = attrib_list[i++];
 101       EGLint val = attrib_list[i];
 102
 103       switch (attr) {
 104       /* common attributes */
 105       case EGL_VG_COLORSPACE:
 106          switch (val) {
 107          case EGL_VG_COLORSPACE_sRGB:
 108          case EGL_VG_COLORSPACE_LINEAR:
 109             break;
 110          default:
 111             err = EGL_BAD_ATTRIBUTE;
 112             break;
 113          }
 114          if (err != EGL_SUCCESS)
 115             break;
 116          surf->VGColorspace = val;
 117          break;
 118       case EGL_VG_ALPHA_FORMAT:
 119          switch (val) {
 120          case EGL_VG_ALPHA_FORMAT_NONPRE:
 121          case EGL_VG_ALPHA_FORMAT_PRE:
 122             break;
 123          default:
 124             err = EGL_BAD_ATTRIBUTE;
 125             break;
 126          }
 127          if (err != EGL_SUCCESS)
 128             break;
 129          surf->VGAlphaFormat = val;
 130          break;
 131       /* window surface attributes */
 132       case EGL_RENDER_BUFFER:
 133          if (type != EGL_WINDOW_BIT) {
 134             err = EGL_BAD_ATTRIBUTE;
 135             break;
 136          }
 137          if (val != EGL_BACK_BUFFER && val != EGL_SINGLE_BUFFER) {
 138             err = EGL_BAD_ATTRIBUTE;
 139             break;
 140          }
 141          surf->RenderBuffer = val;
 142          break;
 143       /* pbuffer surface attributes */
 144       case EGL_WIDTH:
 145          if (type != EGL_PBUFFER_BIT) {
 146             err = EGL_BAD_ATTRIBUTE;
 147             break;
 148          }
 149          if (val < 0) {
 150             err = EGL_BAD_PARAMETER;
 151             break;
 152          }
 153          surf->Width = val;
 154          break;
 155       case EGL_HEIGHT:
 156          if (type != EGL_PBUFFER_BIT) {
 157             err = EGL_BAD_ATTRIBUTE;
 158             break;
 159          }
 160          if (val < 0) {
 161             err = EGL_BAD_PARAMETER;
 162             break;
 163          }
 164          surf->Height = val;
 165          break;
 166       case EGL_LARGEST_PBUFFER:
 167          if (type != EGL_PBUFFER_BIT) {
 168             err = EGL_BAD_ATTRIBUTE;
 169             break;
 170          }
 171          surf->LargestPbuffer = !!val;
 172          break;
 173       /* for eglBindTexImage */
 174       case EGL_TEXTURE_FORMAT:
 175          if (!(type & texture_type)) {
 176             err = EGL_BAD_ATTRIBUTE;
 177             break;
 178          }
 179          switch (val) {
 180          case EGL_TEXTURE_RGB:
 181          case EGL_TEXTURE_RGBA:
 182          case EGL_NO_TEXTURE:
 183             break;
 184          default:
 185             err = EGL_BAD_ATTRIBUTE;
 186             break;
 187          }
 188          if (err != EGL_SUCCESS)
 189             break;
 190          surf->TextureFormat = val;
 191          break;
 192       case EGL_TEXTURE_TARGET:
 193          if (!(type & texture_type)) {
 194             err = EGL_BAD_ATTRIBUTE;
 195             break;
 196          }
 197          switch (val) {
 198          case EGL_TEXTURE_2D:
 199          case EGL_NO_TEXTURE:
 200             break;
 201          default:
 202             err = EGL_BAD_ATTRIBUTE;
 203             break;
 204          }
 205          if (err != EGL_SUCCESS)
 206             break;
 207          surf->TextureTarget = val;
 208          break;
 209       case EGL_MIPMAP_TEXTURE:
 210          if (!(type & texture_type)) {
 211             err = EGL_BAD_ATTRIBUTE;
 212             break;
 213          }
 214          surf->MipmapTexture = !!val;
 215          break;
 216       /* no pixmap surface specific attributes */
 217       default:
 218          err = EGL_BAD_ATTRIBUTE;
 219          break;
 220       }
 221
 222       if (err != EGL_SUCCESS) {
 223          _eglLog(_EGL_WARNING, "bad surface attribute 0x%04x", attr);
 224          break;
 225       }
 226    }
 227
 228    return err;
 229 }
 230
 231
 232 /**
 233  * Do error check on parameters and initialize the given _EGLSurface object.
 234  * \return EGL_TRUE if no errors, EGL_FALSE otherwise.
 235  */
 236 EGLBoolean
 237 _eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
 238                 _EGLConfig *conf, const EGLint *attrib_list)
 239 {
 240    const char *func;
 241    EGLint renderBuffer = EGL_BACK_BUFFER;
 242    EGLint err;
 243
 244    switch (type) {
 245    case EGL_WINDOW_BIT:
 246       func = "eglCreateWindowSurface";
 247       break;
 248    case EGL_PIXMAP_BIT:
 249       func = "eglCreatePixmapSurface";
 250       renderBuffer = EGL_SINGLE_BUFFER;
 251       break;
 252    case EGL_PBUFFER_BIT:
 253       func = "eglCreatePBufferSurface";
 254       break;
 255 #ifdef EGL_MESA_screen_surface
 256    case EGL_SCREEN_BIT_MESA:
 257       func = "eglCreateScreenSurface";
 258       renderBuffer = EGL_SINGLE_BUFFER; /* XXX correct? */
 259       break;
 260 #endif
 261    default:
 262       _eglLog(_EGL_WARNING, "Bad type in _eglInitSurface");
 263       return EGL_FALSE;
 264    }
 265
 266    if ((conf->SurfaceType & type) == 0) {
 267       /* The config can't be used to create a surface of this type */
 268       _eglError(EGL_BAD_CONFIG, func);
 269       return EGL_FALSE;
 270    }
 271
 272    _eglInitResource(&surf->Resource, sizeof(*surf), dpy);
 273    surf->Type = type;
 274    surf->Config = conf;
 275
 276    surf->Width = 0;
 277    surf->Height = 0;
 278    surf->TextureFormat = EGL_NO_TEXTURE;
 279    surf->TextureTarget = EGL_NO_TEXTURE;
 280    surf->MipmapTexture = EGL_FALSE;
 281    surf->LargestPbuffer = EGL_FALSE;
 282    surf->RenderBuffer = renderBuffer;
 283    surf->VGAlphaFormat = EGL_VG_ALPHA_FORMAT_NONPRE;
 284    surf->VGColorspace = EGL_VG_COLORSPACE_sRGB;
 285
 286    surf->MipmapLevel = 0;
 287    surf->MultisampleResolve = EGL_MULTISAMPLE_RESOLVE_DEFAULT;
 288    surf->SwapBehavior = EGL_BUFFER_DESTROYED;
 289
 290    surf->HorizontalResolution = EGL_UNKNOWN;
 291    surf->VerticalResolution = EGL_UNKNOWN;
 292    surf->AspectRatio = EGL_UNKNOWN;
 293
 294    /* the default swap interval is 1 */
 295    _eglClampSwapInterval(surf, 1);
 296
 297    err = _eglParseSurfaceAttribList(surf, attrib_list);
 298    if (err != EGL_SUCCESS)
 299       return _eglError(err, func);
 300
 301    return EGL_TRUE;
 302 }
 303
 304
 305 EGLBoolean
 306 _eglQuerySurface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface,
 307                  EGLint attribute, EGLint *value)
 308 {
 309    switch (attribute) {
 310    case EGL_WIDTH:
 311       *value = surface->Width;
 312       break;
 313    case EGL_HEIGHT:
 314       *value = surface->Height;
 315       break;
 316    case EGL_CONFIG_ID:
 317       *value = surface->Config->ConfigID;
 318       break;
 319    case EGL_LARGEST_PBUFFER:
 320       *value = surface->LargestPbuffer;
 321       break;
 322    case EGL_TEXTURE_FORMAT:
 323       /* texture attributes: only for pbuffers, no error otherwise */
 324       if (surface->Type == EGL_PBUFFER_BIT)
 325          *value = surface->TextureFormat;
 326       break;
 327    case EGL_TEXTURE_TARGET:
 328       if (surface->Type == EGL_PBUFFER_BIT)
 329          *value = surface->TextureTarget;
 330       break;
 331    case EGL_MIPMAP_TEXTURE:
 332       if (surface->Type == EGL_PBUFFER_BIT)
 333          *value = surface->MipmapTexture;
 334       break;
 335    case EGL_MIPMAP_LEVEL:
 336       if (surface->Type == EGL_PBUFFER_BIT)
 337          *value = surface->MipmapLevel;
 338       break;
 339    case EGL_SWAP_BEHAVIOR:
 340       *value = surface->SwapBehavior;
 341       break;
 342    case EGL_RENDER_BUFFER:
 343       *value = surface->RenderBuffer;
 344       break;
 345    case EGL_PIXEL_ASPECT_RATIO:
 346       *value = surface->AspectRatio;
 347       break;
 348    case EGL_HORIZONTAL_RESOLUTION:
 349       *value = surface->HorizontalResolution;
 350       break;
 351    case EGL_VERTICAL_RESOLUTION:
 352       *value = surface->VerticalResolution;
 353       break;
 354    case EGL_MULTISAMPLE_RESOLVE:
 355       *value = surface->MultisampleResolve;
 356       break;
 357    case EGL_VG_ALPHA_FORMAT:
 358       *value = surface->VGAlphaFormat;
 359       break;
 360    case EGL_VG_COLORSPACE:
 361       *value = surface->VGColorspace;
 362       break;
 363    default:
 364       _eglError(EGL_BAD_ATTRIBUTE, "eglQuerySurface");
 365       return EGL_FALSE;
 366    }
 367
 368    return EGL_TRUE;
 369 }
 370
 371
 372 /**
 373  * Default fallback routine - drivers might override this.
 374  */
 375 EGLBoolean
 376 _eglSurfaceAttrib(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface,
 377                   EGLint attribute, EGLint value)
 378 {
 379    EGLint confval;
 380    EGLint err = EGL_SUCCESS;
 381
 382    switch (attribute) {
 383    case EGL_MIPMAP_LEVEL:
 384       confval = surface->Config->RenderableType;
 385       if (!(confval & (EGL_OPENGL_ES_BIT | EGL_OPENGL_ES2_BIT))) {
 386          err = EGL_BAD_PARAMETER;
 387          break;
 388       }
 389       surface->MipmapLevel = value;
 390       break;
 391    case EGL_MULTISAMPLE_RESOLVE:
 392       switch (value) {
 393       case EGL_MULTISAMPLE_RESOLVE_DEFAULT:
 394          break;
 395       case EGL_MULTISAMPLE_RESOLVE_BOX:
 396          confval = surface->Config->SurfaceType;
 397          if (!(confval & EGL_MULTISAMPLE_RESOLVE_BOX_BIT))
 398             err = EGL_BAD_MATCH;
 399          break;
 400       default:
 401          err = EGL_BAD_ATTRIBUTE;
 402          break;
 403       }
 404       if (err != EGL_SUCCESS)
 405          break;
 406       surface->MultisampleResolve = value;
 407       break;
 408    case EGL_SWAP_BEHAVIOR:
 409       switch (value) {
 410       case EGL_BUFFER_DESTROYED:
 411          break;
 412       case EGL_BUFFER_PRESERVED:
 413          confval = surface->Config->SurfaceType;
 414          if (!(confval & EGL_SWAP_BEHAVIOR_PRESERVED_BIT))
 415             err = EGL_BAD_MATCH;
 416          break;
 417       default:
 418          err = EGL_BAD_ATTRIBUTE;
 419          break;
 420       }
 421       if (err != EGL_SUCCESS)
 422          break;
 423       surface->SwapBehavior = value;
 424       break;
 425    default:
 426       err = EGL_BAD_ATTRIBUTE;
 427       break;
 428    }
 429
 430    if (err != EGL_SUCCESS)
 431       return _eglError(err, "eglSurfaceAttrib");
 432    return EGL_TRUE;
 433 }
 434
 435
 436 EGLBoolean
 437 _eglBindTexImage(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface,
 438                  EGLint buffer)
 439 {
 440    EGLint texture_type = EGL_PBUFFER_BIT;
 441
 442    /* Just do basic error checking and return success/fail.
 443     * Drivers must implement the real stuff.
 444     */
 445
 446    if (dpy->Extensions.NOK_texture_from_pixmap)
 447       texture_type |= EGL_PIXMAP_BIT;
 448
 449    if (!(surface->Type & texture_type)) {
 450       _eglError(EGL_BAD_SURFACE, "eglBindTexImage");
 451       return EGL_FALSE;
 452    }
 453
 454    if (surface->TextureFormat == EGL_NO_TEXTURE) {
 455       _eglError(EGL_BAD_MATCH, "eglBindTexImage");
 456       return EGL_FALSE;
 457    }
 458
 459    if (surface->TextureTarget == EGL_NO_TEXTURE) {
 460       _eglError(EGL_BAD_MATCH, "eglBindTexImage");
 461       return EGL_FALSE;
 462    }
 463
 464    if (buffer != EGL_BACK_BUFFER) {
 465       _eglError(EGL_BAD_PARAMETER, "eglBindTexImage");
 466       return EGL_FALSE;
 467    }
 468
 469    surface->BoundToTexture = EGL_TRUE;
 470
 471    return EGL_TRUE;
 472 }
 473
 474
 475 EGLBoolean
 476 _eglSwapInterval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
 477                  EGLint interval)
 478 {
 479    _eglClampSwapInterval(surf, interval);
 480    return EGL_TRUE;
 481 }