include/GL/internal/dri_interface.h

   1 /*
   2  * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
   3  * Copyright 2007-2008 Red Hat, Inc.
   4  * (C) Copyright IBM Corporation 2004
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * on the rights to use, copy, modify, merge, publish, distribute, sub
  11  * license, and/or sell copies of the Software, and to permit persons to whom
  12  * the Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 /**
  28  * \file dri_interface.h
  29  *
  30  * This file contains all the types and functions that define the interface
  31  * between a DRI driver and driver loader.  Currently, the most common driver
  32  * loader is the XFree86 libGL.so.  However, other loaders do exist, and in
  33  * the future the server-side libglx.a will also be a loader.
  34  *
  35  * \author Kevin E. Martin <kevin@precisioninsight.com>
  36  * \author Ian Romanick <idr@us.ibm.com>
  37  * \author Kristian Høgsberg <krh@redhat.com>
  38  */
  39
  40 #ifndef DRI_INTERFACE_H
  41 #define DRI_INTERFACE_H
  42
  43 /* For archs with no drm.h */
  44 #if defined(__APPLE__) || defined(__CYGWIN__) || defined(__GNU__)
  45 #ifndef __NOT_HAVE_DRM_H
  46 #define __NOT_HAVE_DRM_H
  47 #endif
  48 #endif
  49
  50 #ifndef __NOT_HAVE_DRM_H
  51 #include <drm.h>
  52 #else
  53 typedef unsigned int drm_context_t;
  54 typedef unsigned int drm_drawable_t;
  55 typedef struct drm_clip_rect drm_clip_rect_t;
  56 #endif
  57
  58 /**
  59  * \name DRI interface structures
  60  *
  61  * The following structures define the interface between the GLX client
  62  * side library and the DRI (direct rendering infrastructure).
  63  */
  64 /*@{*/
  65 typedef struct __DRIdisplayRec          __DRIdisplay;
  66 typedef struct __DRIscreenRec           __DRIscreen;
  67 typedef struct __DRIcontextRec          __DRIcontext;
  68 typedef struct __DRIdrawableRec         __DRIdrawable;
  69 typedef struct __DRIconfigRec           __DRIconfig;
  70 typedef struct __DRIframebufferRec      __DRIframebuffer;
  71 typedef struct __DRIversionRec          __DRIversion;
  72
  73 typedef struct __DRIcoreExtensionRec            __DRIcoreExtension;
  74 typedef struct __DRIextensionRec                __DRIextension;
  75 typedef struct __DRIcopySubBufferExtensionRec   __DRIcopySubBufferExtension;
  76 typedef struct __DRIswapControlExtensionRec     __DRIswapControlExtension;
  77 typedef struct __DRIframeTrackingExtensionRec   __DRIframeTrackingExtension;
  78 typedef struct __DRImediaStreamCounterExtensionRec      __DRImediaStreamCounterExtension;
  79 typedef struct __DRItexOffsetExtensionRec       __DRItexOffsetExtension;
  80 typedef struct __DRItexBufferExtensionRec       __DRItexBufferExtension;
  81 typedef struct __DRIlegacyExtensionRec          __DRIlegacyExtension;
  82 typedef struct __DRIswrastExtensionRec          __DRIswrastExtension;
  83 typedef struct __DRIbufferRec                   __DRIbuffer;
  84 typedef struct __DRIdri2ExtensionRec            __DRIdri2Extension;
  85 typedef struct __DRIdri2LoaderExtensionRec      __DRIdri2LoaderExtension;
  86 typedef struct __DRI2flushExtensionRec  __DRI2flushExtension;
  87 typedef struct __DRI2throttleExtensionRec       __DRI2throttleExtension;
  88
  89 /*@}*/
  90
  91
  92 /**
  93  * Extension struct.  Drivers 'inherit' from this struct by embedding
  94  * it as the first element in the extension struct.
  95  *
  96  * We never break API in for a DRI extension.  If we need to change
  97  * the way things work in a non-backwards compatible manner, we
  98  * introduce a new extension.  During a transition period, we can
  99  * leave both the old and the new extension in the driver, which
 100  * allows us to move to the new interface without having to update the
 101  * loader(s) in lock step.
 102  *
 103  * However, we can add entry points to an extension over time as long
 104  * as we don't break the old ones.  As we add entry points to an
 105  * extension, we increase the version number.  The corresponding
 106  * #define can be used to guard code that accesses the new entry
 107  * points at compile time and the version field in the extension
 108  * struct can be used at run-time to determine how to use the
 109  * extension.
 110  */
 111 struct __DRIextensionRec {
 112     const char *name;
 113     int version;
 114 };
 115
 116 /**
 117  * The first set of extension are the screen extensions, returned by
 118  * __DRIcore::getExtensions().  This entry point will return a list of
 119  * extensions and the loader can use the ones it knows about by
 120  * casting them to more specific extensions and advertising any GLX
 121  * extensions the DRI extensions enables.
 122  */
 123
 124 /**
 125  * Used by drivers to indicate support for setting the read drawable.
 126  */
 127 #define __DRI_READ_DRAWABLE "DRI_ReadDrawable"
 128 #define __DRI_READ_DRAWABLE_VERSION 1
 129
 130 /**
 131  * Used by drivers that implement the GLX_MESA_copy_sub_buffer extension.
 132  */
 133 #define __DRI_COPY_SUB_BUFFER "DRI_CopySubBuffer"
 134 #define __DRI_COPY_SUB_BUFFER_VERSION 1
 135 struct __DRIcopySubBufferExtensionRec {
 136     __DRIextension base;
 137     void (*copySubBuffer)(__DRIdrawable *drawable, int x, int y, int w, int h);
 138 };
 139
 140 /**
 141  * Used by drivers that implement the GLX_SGI_swap_control or
 142  * GLX_MESA_swap_control extension.
 143  */
 144 #define __DRI_SWAP_CONTROL "DRI_SwapControl"
 145 #define __DRI_SWAP_CONTROL_VERSION 1
 146 struct __DRIswapControlExtensionRec {
 147     __DRIextension base;
 148     void (*setSwapInterval)(__DRIdrawable *drawable, unsigned int inteval);
 149     unsigned int (*getSwapInterval)(__DRIdrawable *drawable);
 150 };
 151
 152 /**
 153  * Used by drivers that implement the GLX_MESA_swap_frame_usage extension.
 154  */
 155 #define __DRI_FRAME_TRACKING "DRI_FrameTracking"
 156 #define __DRI_FRAME_TRACKING_VERSION 1
 157 struct __DRIframeTrackingExtensionRec {
 158     __DRIextension base;
 159
 160     /**
 161      * Enable or disable frame usage tracking.
 162      *
 163      * \since Internal API version 20030317.
 164      */
 165     int (*frameTracking)(__DRIdrawable *drawable, GLboolean enable);
 166
 167     /**
 168      * Retrieve frame usage information.
 169      *
 170      * \since Internal API version 20030317.
 171      */
 172     int (*queryFrameTracking)(__DRIdrawable *drawable,
 173                               int64_t * sbc, int64_t * missedFrames,
 174                               float * lastMissedUsage, float * usage);
 175 };
 176
 177
 178 /**
 179  * Used by drivers that implement the GLX_SGI_video_sync extension.
 180  */
 181 #define __DRI_MEDIA_STREAM_COUNTER "DRI_MediaStreamCounter"
 182 #define __DRI_MEDIA_STREAM_COUNTER_VERSION 1
 183 struct __DRImediaStreamCounterExtensionRec {
 184     __DRIextension base;
 185
 186     /**
 187      * Wait for the MSC to equal target_msc, or, if that has already passed,
 188      * the next time (MSC % divisor) is equal to remainder.  If divisor is
 189      * zero, the function will return as soon as MSC is greater than or equal
 190      * to target_msc.
 191      */
 192     int (*waitForMSC)(__DRIdrawable *drawable,
 193                       int64_t target_msc, int64_t divisor, int64_t remainder,
 194                       int64_t * msc, int64_t * sbc);
 195
 196     /**
 197      * Get the number of vertical refreshes since some point in time before
 198      * this function was first called (i.e., system start up).
 199      */
 200     int (*getDrawableMSC)(__DRIscreen *screen, __DRIdrawable *drawable,
 201                           int64_t *msc);
 202 };
 203
 204
 205 #define __DRI_TEX_OFFSET "DRI_TexOffset"
 206 #define __DRI_TEX_OFFSET_VERSION 1
 207 struct __DRItexOffsetExtensionRec {
 208     __DRIextension base;
 209
 210     /**
 211      * Method to override base texture image with a driver specific 'offset'.
 212      * The depth passed in allows e.g. to ignore the alpha channel of texture
 213      * images where the non-alpha components don't occupy a whole texel.
 214      *
 215      * For GLX_EXT_texture_from_pixmap with AIGLX.
 216      */
 217     void (*setTexOffset)(__DRIcontext *pDRICtx, GLint texname,
 218                          unsigned long long offset, GLint depth, GLuint pitch);
 219 };
 220
 221
 222 /* Valid values for format in the setTexBuffer2 function below.  These
 223  * values match the GLX tokens for compatibility reasons, but we
 224  * define them here since the DRI interface can't depend on GLX. */
 225 #define __DRI_TEXTURE_FORMAT_NONE        0x20D8
 226 #define __DRI_TEXTURE_FORMAT_RGB         0x20D9
 227 #define __DRI_TEXTURE_FORMAT_RGBA        0x20DA
 228
 229 #define __DRI_TEX_BUFFER "DRI_TexBuffer"
 230 #define __DRI_TEX_BUFFER_VERSION 2
 231 struct __DRItexBufferExtensionRec {
 232     __DRIextension base;
 233
 234     /**
 235      * Method to override base texture image with the contents of a
 236      * __DRIdrawable.
 237      *
 238      * For GLX_EXT_texture_from_pixmap with AIGLX.  Deprecated in favor of
 239      * setTexBuffer2 in version 2 of this interface
 240      */
 241     void (*setTexBuffer)(__DRIcontext *pDRICtx,
 242                          GLint target,
 243                          __DRIdrawable *pDraw);
 244
 245     /**
 246      * Method to override base texture image with the contents of a
 247      * __DRIdrawable, including the required texture format attribute.
 248      *
 249      * For GLX_EXT_texture_from_pixmap with AIGLX.
 250      */
 251     void (*setTexBuffer2)(__DRIcontext *pDRICtx,
 252                           GLint target,
 253                           GLint format,
 254                           __DRIdrawable *pDraw);
 255     /**
 256      * Method to release texture buffer in case some special platform
 257      * need this.
 258      *
 259      * For GLX_EXT_texture_from_pixmap with AIGLX.
 260      */
 261     void (*releaseTexBuffer)(__DRIcontext *pDRICtx,
 262                         GLint target,
 263                         __DRIdrawable *pDraw);
 264 };
 265
 266 /**
 267  * Used by drivers that implement DRI2
 268  */
 269 #define __DRI2_FLUSH "DRI2_Flush"
 270 #define __DRI2_FLUSH_VERSION 4
 271
 272 #define __DRI2_FLUSH_DRAWABLE (1 << 0) /* the drawable should be flushed. */
 273 #define __DRI2_FLUSH_CONTEXT  (1 << 1) /* glFlush should be called */
 274
 275 enum __DRI2throttleReason {
 276    __DRI2_THROTTLE_SWAPBUFFER,
 277    __DRI2_THROTTLE_COPYSUBBUFFER,
 278    __DRI2_THROTTLE_FLUSHFRONT
 279 };
 280
 281 struct __DRI2flushExtensionRec {
 282     __DRIextension base;
 283     void (*flush)(__DRIdrawable *drawable);
 284
 285     /**
 286      * Ask the driver to call getBuffers/getBuffersWithFormat before
 287      * it starts rendering again.
 288      *
 289      * \param drawable the drawable to invalidate
 290      *
 291      * \since 3
 292      */
 293     void (*invalidate)(__DRIdrawable *drawable);
 294
 295     /**
 296      * This function reduces the number of flushes in the driver by combining
 297      * several operations into one call.
 298      *
 299      * It can:
 300      * - throttle
 301      * - flush a drawable
 302      * - flush a context
 303      *
 304      * \param context           the context
 305      * \param drawable          the drawable to flush
 306      * \param flags             a combination of _DRI2_FLUSH_xxx flags
 307      * \param throttle_reason   the reason for throttling, 0 = no throttling
 308      *
 309      * \since 4
 310      */
 311     void (*flush_with_flags)(__DRIcontext *ctx,
 312                              __DRIdrawable *drawable,
 313                              unsigned flags,
 314                              enum __DRI2throttleReason throttle_reason);
 315 };
 316
 317
 318 /**
 319  * Extension that the driver uses to request
 320  * throttle callbacks.
 321  */
 322
 323 #define __DRI2_THROTTLE "DRI2_Throttle"
 324 #define __DRI2_THROTTLE_VERSION 1
 325
 326 struct __DRI2throttleExtensionRec {
 327    __DRIextension base;
 328    void (*throttle)(__DRIcontext *ctx,
 329                     __DRIdrawable *drawable,
 330                     enum __DRI2throttleReason reason);
 331 };
 332
 333 /*@}*/
 334
 335 /**
 336  * The following extensions describe loader features that the DRI
 337  * driver can make use of.  Some of these are mandatory, such as the
 338  * getDrawableInfo extension for DRI and the DRI Loader extensions for
 339  * DRI2, while others are optional, and if present allow the driver to
 340  * expose certain features.  The loader pass in a NULL terminated
 341  * array of these extensions to the driver in the createNewScreen
 342  * constructor.
 343  */
 344
 345 typedef struct __DRIgetDrawableInfoExtensionRec __DRIgetDrawableInfoExtension;
 346 typedef struct __DRIsystemTimeExtensionRec __DRIsystemTimeExtension;
 347 typedef struct __DRIdamageExtensionRec __DRIdamageExtension;
 348 typedef struct __DRIloaderExtensionRec __DRIloaderExtension;
 349 typedef struct __DRIswrastLoaderExtensionRec __DRIswrastLoaderExtension;
 350
 351
 352 /**
 353  * Callback to getDrawableInfo protocol
 354  */
 355 #define __DRI_GET_DRAWABLE_INFO "DRI_GetDrawableInfo"
 356 #define __DRI_GET_DRAWABLE_INFO_VERSION 1
 357 struct __DRIgetDrawableInfoExtensionRec {
 358     __DRIextension base;
 359
 360     /**
 361      * This function is used to get information about the position, size, and
 362      * clip rects of a drawable.
 363      */
 364     GLboolean (* getDrawableInfo) ( __DRIdrawable *drawable,
 365         unsigned int * index, unsigned int * stamp,
 366         int * x, int * y, int * width, int * height,
 367         int * numClipRects, drm_clip_rect_t ** pClipRects,
 368         int * backX, int * backY,
 369         int * numBackClipRects, drm_clip_rect_t ** pBackClipRects,
 370         void *loaderPrivate);
 371 };
 372
 373 /**
 374  * Callback to get system time for media stream counter extensions.
 375  */
 376 #define __DRI_SYSTEM_TIME "DRI_SystemTime"
 377 #define __DRI_SYSTEM_TIME_VERSION 1
 378 struct __DRIsystemTimeExtensionRec {
 379     __DRIextension base;
 380
 381     /**
 382      * Get the 64-bit unadjusted system time (UST).
 383      */
 384     int (*getUST)(int64_t * ust);
 385
 386     /**
 387      * Get the media stream counter (MSC) rate.
 388      *
 389      * Matching the definition in GLX_OML_sync_control, this function returns
 390      * the rate of the "media stream counter".  In practical terms, this is
 391      * the frame refresh rate of the display.
 392      */
 393     GLboolean (*getMSCRate)(__DRIdrawable *draw,
 394                             int32_t * numerator, int32_t * denominator,
 395                             void *loaderPrivate);
 396 };
 397
 398 /**
 399  * Damage reporting
 400  */
 401 #define __DRI_DAMAGE "DRI_Damage"
 402 #define __DRI_DAMAGE_VERSION 1
 403 struct __DRIdamageExtensionRec {
 404     __DRIextension base;
 405
 406     /**
 407      * Reports areas of the given drawable which have been modified by the
 408      * driver.
 409      *
 410      * \param drawable which the drawing was done to.
 411      * \param rects rectangles affected, with the drawable origin as the
 412      *        origin.
 413      * \param x X offset of the drawable within the screen (used in the
 414      *        front_buffer case)
 415      * \param y Y offset of the drawable within the screen.
 416      * \param front_buffer boolean flag for whether the drawing to the
 417      *        drawable was actually done directly to the front buffer (instead
 418      *        of backing storage, for example)
 419      * \param loaderPrivate the data passed in at createNewDrawable time
 420      */
 421     void (*reportDamage)(__DRIdrawable *draw,
 422                          int x, int y,
 423                          drm_clip_rect_t *rects, int num_rects,
 424                          GLboolean front_buffer,
 425                          void *loaderPrivate);
 426 };
 427
 428 #define __DRI_SWRAST_IMAGE_OP_DRAW      1
 429 #define __DRI_SWRAST_IMAGE_OP_CLEAR     2
 430 #define __DRI_SWRAST_IMAGE_OP_SWAP      3
 431
 432 /**
 433  * SWRast Loader extension.
 434  */
 435 #define __DRI_SWRAST_LOADER "DRI_SWRastLoader"
 436 #define __DRI_SWRAST_LOADER_VERSION 1
 437 struct __DRIswrastLoaderExtensionRec {
 438     __DRIextension base;
 439
 440     /*
 441      * Drawable position and size
 442      */
 443     void (*getDrawableInfo)(__DRIdrawable *drawable,
 444                             int *x, int *y, int *width, int *height,
 445                             void *loaderPrivate);
 446
 447     /**
 448      * Put image to drawable
 449      */
 450     void (*putImage)(__DRIdrawable *drawable, int op,
 451                      int x, int y, int width, int height,
 452                      char *data, void *loaderPrivate);
 453
 454     /**
 455      * Get image from readable
 456      */
 457     void (*getImage)(__DRIdrawable *readable,
 458                      int x, int y, int width, int height,
 459                      char *data, void *loaderPrivate);
 460 };
 461
 462 /**
 463  * Invalidate loader extension.  The presence of this extension
 464  * indicates to the DRI driver that the loader will call invalidate in
 465  * the __DRI2_FLUSH extension, whenever the needs to query for new
 466  * buffers.  This means that the DRI driver can drop the polling in
 467  * glViewport().
 468  *
 469  * The extension doesn't provide any functionality, it's only use to
 470  * indicate to the driver that it can use the new semantics.  A DRI
 471  * driver can use this to switch between the different semantics or
 472  * just refuse to initialize if this extension isn't present.
 473  */
 474 #define __DRI_USE_INVALIDATE "DRI_UseInvalidate"
 475 #define __DRI_USE_INVALIDATE_VERSION 1
 476
 477 typedef struct __DRIuseInvalidateExtensionRec __DRIuseInvalidateExtension;
 478 struct __DRIuseInvalidateExtensionRec {
 479    __DRIextension base;
 480 };
 481
 482 /**
 483  * The remaining extensions describe driver extensions, immediately
 484  * available interfaces provided by the driver.  To start using the
 485  * driver, dlsym() for the __DRI_DRIVER_EXTENSIONS symbol and look for
 486  * the extension you need in the array.
 487  */
 488 #define __DRI_DRIVER_EXTENSIONS "__driDriverExtensions"
 489
 490 /**
 491  * Tokens for __DRIconfig attribs.  A number of attributes defined by
 492  * GLX or EGL standards are not in the table, as they must be provided
 493  * by the loader.  For example, FBConfig ID or visual ID, drawable type.
 494  */
 495
 496 #define __DRI_ATTRIB_BUFFER_SIZE                 1
 497 #define __DRI_ATTRIB_LEVEL                       2
 498 #define __DRI_ATTRIB_RED_SIZE                    3
 499 #define __DRI_ATTRIB_GREEN_SIZE                  4
 500 #define __DRI_ATTRIB_BLUE_SIZE                   5
 501 #define __DRI_ATTRIB_LUMINANCE_SIZE              6
 502 #define __DRI_ATTRIB_ALPHA_SIZE                  7
 503 #define __DRI_ATTRIB_ALPHA_MASK_SIZE             8
 504 #define __DRI_ATTRIB_DEPTH_SIZE                  9
 505 #define __DRI_ATTRIB_STENCIL_SIZE               10
 506 #define __DRI_ATTRIB_ACCUM_RED_SIZE             11
 507 #define __DRI_ATTRIB_ACCUM_GREEN_SIZE           12
 508 #define __DRI_ATTRIB_ACCUM_BLUE_SIZE            13
 509 #define __DRI_ATTRIB_ACCUM_ALPHA_SIZE           14
 510 #define __DRI_ATTRIB_SAMPLE_BUFFERS             15
 511 #define __DRI_ATTRIB_SAMPLES                    16
 512 #define __DRI_ATTRIB_RENDER_TYPE                17
 513 #define __DRI_ATTRIB_CONFIG_CAVEAT              18
 514 #define __DRI_ATTRIB_CONFORMANT                 19
 515 #define __DRI_ATTRIB_DOUBLE_BUFFER              20
 516 #define __DRI_ATTRIB_STEREO                     21
 517 #define __DRI_ATTRIB_AUX_BUFFERS                22
 518 #define __DRI_ATTRIB_TRANSPARENT_TYPE           23
 519 #define __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE    24
 520 #define __DRI_ATTRIB_TRANSPARENT_RED_VALUE      25
 521 #define __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE    26
 522 #define __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE     27
 523 #define __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE    28
 524 #define __DRI_ATTRIB_FLOAT_MODE                 29
 525 #define __DRI_ATTRIB_RED_MASK                   30
 526 #define __DRI_ATTRIB_GREEN_MASK                 31
 527 #define __DRI_ATTRIB_BLUE_MASK                  32
 528 #define __DRI_ATTRIB_ALPHA_MASK                 33
 529 #define __DRI_ATTRIB_MAX_PBUFFER_WIDTH          34
 530 #define __DRI_ATTRIB_MAX_PBUFFER_HEIGHT         35
 531 #define __DRI_ATTRIB_MAX_PBUFFER_PIXELS         36
 532 #define __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH      37
 533 #define __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT     38
 534 #define __DRI_ATTRIB_VISUAL_SELECT_GROUP        39
 535 #define __DRI_ATTRIB_SWAP_METHOD                40
 536 #define __DRI_ATTRIB_MAX_SWAP_INTERVAL          41
 537 #define __DRI_ATTRIB_MIN_SWAP_INTERVAL          42
 538 #define __DRI_ATTRIB_BIND_TO_TEXTURE_RGB        43
 539 #define __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA       44
 540 #define __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE     45
 541 #define __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS    46
 542 #define __DRI_ATTRIB_YINVERTED                  47
 543 #define __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE   48
 544
 545 /* __DRI_ATTRIB_RENDER_TYPE */
 546 #define __DRI_ATTRIB_RGBA_BIT                   0x01
 547 #define __DRI_ATTRIB_COLOR_INDEX_BIT            0x02
 548 #define __DRI_ATTRIB_LUMINANCE_BIT              0x04
 549 #define __DRI_ATTRIB_FLOAT_BIT                  0x08
 550 #define __DRI_ATTRIB_UNSIGNED_FLOAT_BIT         0x10
 551
 552 /* __DRI_ATTRIB_CONFIG_CAVEAT */
 553 #define __DRI_ATTRIB_SLOW_BIT                   0x01
 554 #define __DRI_ATTRIB_NON_CONFORMANT_CONFIG      0x02
 555
 556 /* __DRI_ATTRIB_TRANSPARENT_TYPE */
 557 #define __DRI_ATTRIB_TRANSPARENT_RGB            0x00
 558 #define __DRI_ATTRIB_TRANSPARENT_INDEX          0x01
 559
 560 /* __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS  */
 561 #define __DRI_ATTRIB_TEXTURE_1D_BIT             0x01
 562 #define __DRI_ATTRIB_TEXTURE_2D_BIT             0x02
 563 #define __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT      0x04
 564
 565 /**
 566  * This extension defines the core DRI functionality.
 567  */
 568 #define __DRI_CORE "DRI_Core"
 569 #define __DRI_CORE_VERSION 1
 570
 571 struct __DRIcoreExtensionRec {
 572     __DRIextension base;
 573
 574     __DRIscreen *(*createNewScreen)(int screen, int fd,
 575                                     unsigned int sarea_handle,
 576                                     const __DRIextension **extensions,
 577                                     const __DRIconfig ***driverConfigs,
 578                                     void *loaderPrivate);
 579
 580     void (*destroyScreen)(__DRIscreen *screen);
 581
 582     const __DRIextension **(*getExtensions)(__DRIscreen *screen);
 583
 584     int (*getConfigAttrib)(const __DRIconfig *config,
 585                            unsigned int attrib,
 586                            unsigned int *value);
 587
 588     int (*indexConfigAttrib)(const __DRIconfig *config, int index,
 589                              unsigned int *attrib, unsigned int *value);
 590
 591     __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
 592                                         const __DRIconfig *config,
 593                                         unsigned int drawable_id,
 594                                         unsigned int head,
 595                                         void *loaderPrivate);
 596
 597     void (*destroyDrawable)(__DRIdrawable *drawable);
 598
 599     void (*swapBuffers)(__DRIdrawable *drawable);
 600
 601     __DRIcontext *(*createNewContext)(__DRIscreen *screen,
 602                                       const __DRIconfig *config,
 603                                       __DRIcontext *shared,
 604                                       void *loaderPrivate);
 605
 606     int (*copyContext)(__DRIcontext *dest,
 607                        __DRIcontext *src,
 608                        unsigned long mask);
 609
 610     void (*destroyContext)(__DRIcontext *context);
 611
 612     int (*bindContext)(__DRIcontext *ctx,
 613                        __DRIdrawable *pdraw,
 614                        __DRIdrawable *pread);
 615
 616     int (*unbindContext)(__DRIcontext *ctx);
 617 };
 618
 619 /**
 620  * Stored version of some component (i.e., server-side DRI module, kernel-side
 621  * DRM, etc.).
 622  *
 623  * \todo
 624  * There are several data structures that explicitly store a major version,
 625  * minor version, and patch level.  These structures should be modified to
 626  * have a \c __DRIversionRec instead.
 627  */
 628 struct __DRIversionRec {
 629     int    major;        /**< Major version number. */
 630     int    minor;        /**< Minor version number. */
 631     int    patch;        /**< Patch-level. */
 632 };
 633
 634 /**
 635  * Framebuffer information record.  Used by libGL to communicate information
 636  * about the framebuffer to the driver's \c __driCreateNewScreen function.
 637  *
 638  * In XFree86, most of this information is derrived from data returned by
 639  * calling \c XF86DRIGetDeviceInfo.
 640  *
 641  * \sa XF86DRIGetDeviceInfo __DRIdisplayRec::createNewScreen
 642  *     __driUtilCreateNewScreen CallCreateNewScreen
 643  *
 644  * \bug This structure could be better named.
 645  */
 646 struct __DRIframebufferRec {
 647     unsigned char *base;    /**< Framebuffer base address in the CPU's
 648                              * address space.  This value is calculated by
 649                              * calling \c drmMap on the framebuffer handle
 650                              * returned by \c XF86DRIGetDeviceInfo (or a
 651                              * similar function).
 652                              */
 653     int size;               /**< Framebuffer size, in bytes. */
 654     int stride;             /**< Number of bytes from one line to the next. */
 655     int width;              /**< Pixel width of the framebuffer. */
 656     int height;             /**< Pixel height of the framebuffer. */
 657     int dev_priv_size;      /**< Size of the driver's dev-priv structure. */
 658     void *dev_priv;         /**< Pointer to the driver's dev-priv structure. */
 659 };
 660
 661
 662 /**
 663  * This extension provides alternative screen, drawable and context
 664  * constructors for legacy DRI functionality.  This is used in
 665  * conjunction with the core extension.
 666  */
 667 #define __DRI_LEGACY "DRI_Legacy"
 668 #define __DRI_LEGACY_VERSION 1
 669
 670 struct __DRIlegacyExtensionRec {
 671     __DRIextension base;
 672
 673     __DRIscreen *(*createNewScreen)(int screen,
 674                                     const __DRIversion *ddx_version,
 675                                     const __DRIversion *dri_version,
 676                                     const __DRIversion *drm_version,
 677                                     const __DRIframebuffer *frame_buffer,
 678                                     void *pSAREA, int fd,
 679                                     const __DRIextension **extensions,
 680                                     const __DRIconfig ***driver_configs,
 681                                     void *loaderPrivate);
 682
 683     __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
 684                                         const __DRIconfig *config,
 685                                         drm_drawable_t hwDrawable,
 686                                         int renderType, const int *attrs,
 687                                         void *loaderPrivate);
 688
 689     __DRIcontext *(*createNewContext)(__DRIscreen *screen,
 690                                       const __DRIconfig *config,
 691                                       int render_type,
 692                                       __DRIcontext *shared,
 693                                       drm_context_t hwContext,
 694                                       void *loaderPrivate);
 695 };
 696
 697 /**
 698  * This extension provides alternative screen, drawable and context
 699  * constructors for swrast DRI functionality.  This is used in
 700  * conjunction with the core extension.
 701  */
 702 #define __DRI_SWRAST "DRI_SWRast"
 703 #define __DRI_SWRAST_VERSION 3
 704
 705 struct __DRIswrastExtensionRec {
 706     __DRIextension base;
 707
 708     __DRIscreen *(*createNewScreen)(int screen,
 709                                     const __DRIextension **extensions,
 710                                     const __DRIconfig ***driver_configs,
 711                                     void *loaderPrivate);
 712
 713     __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
 714                                         const __DRIconfig *config,
 715                                         void *loaderPrivate);
 716
 717    /* Since version 2 */
 718    __DRIcontext *(*createNewContextForAPI)(__DRIscreen *screen,
 719                                            int api,
 720                                            const __DRIconfig *config,
 721                                            __DRIcontext *shared,
 722                                            void *data);
 723
 724    /**
 725     * Create a context for a particular API with a set of attributes
 726     *
 727     * \since version 3
 728     *
 729     * \sa __DRIdri2ExtensionRec::createContextAttribs
 730     */
 731    __DRIcontext *(*createContextAttribs)(__DRIscreen *screen,
 732                                          int api,
 733                                          const __DRIconfig *config,
 734                                          __DRIcontext *shared,
 735                                          unsigned num_attribs,
 736                                          const uint32_t *attribs,
 737                                          unsigned *error,
 738                                          void *loaderPrivate);
 739 };
 740
 741 /**
 742  * DRI2 Loader extension.
 743  */
 744 #define __DRI_BUFFER_FRONT_LEFT         0
 745 #define __DRI_BUFFER_BACK_LEFT          1
 746 #define __DRI_BUFFER_FRONT_RIGHT        2
 747 #define __DRI_BUFFER_BACK_RIGHT         3
 748 #define __DRI_BUFFER_DEPTH              4
 749 #define __DRI_BUFFER_STENCIL            5
 750 #define __DRI_BUFFER_ACCUM              6
 751 #define __DRI_BUFFER_FAKE_FRONT_LEFT    7
 752 #define __DRI_BUFFER_FAKE_FRONT_RIGHT   8
 753 #define __DRI_BUFFER_DEPTH_STENCIL      9  /**< Only available with DRI2 1.1 */
 754 #define __DRI_BUFFER_HIZ                10
 755
 756 /* Inofficial and for internal use. Increase when adding a new buffer token. */
 757 #define __DRI_BUFFER_COUNT              11
 758
 759 struct __DRIbufferRec {
 760     unsigned int attachment;
 761     unsigned int name;
 762     unsigned int pitch;
 763     unsigned int cpp;
 764     unsigned int flags;
 765 };
 766
 767 #define __DRI_DRI2_LOADER "DRI_DRI2Loader"
 768 #define __DRI_DRI2_LOADER_VERSION 3
 769 struct __DRIdri2LoaderExtensionRec {
 770     __DRIextension base;
 771
 772     __DRIbuffer *(*getBuffers)(__DRIdrawable *driDrawable,
 773                                int *width, int *height,
 774                                unsigned int *attachments, int count,
 775                                int *out_count, void *loaderPrivate);
 776
 777     /**
 778      * Flush pending front-buffer rendering
 779      *
 780      * Any rendering that has been performed to the
 781      * \c __DRI_BUFFER_FAKE_FRONT_LEFT will be flushed to the
 782      * \c __DRI_BUFFER_FRONT_LEFT.
 783      *
 784      * \param driDrawable    Drawable whose front-buffer is to be flushed
 785      * \param loaderPrivate  Loader's private data that was previously passed
 786      *                       into __DRIdri2ExtensionRec::createNewDrawable
 787      */
 788     void (*flushFrontBuffer)(__DRIdrawable *driDrawable, void *loaderPrivate);
 789
 790
 791     /**
 792      * Get list of buffers from the server
 793      *
 794      * Gets a list of buffer for the specified set of attachments.  Unlike
 795      * \c ::getBuffers, this function takes a list of attachments paired with
 796      * opaque \c unsigned \c int value describing the format of the buffer.
 797      * It is the responsibility of the caller to know what the service that
 798      * allocates the buffers will expect to receive for the format.
 799      *
 800      * \param driDrawable    Drawable whose buffers are being queried.
 801      * \param width          Output where the width of the buffers is stored.
 802      * \param height         Output where the height of the buffers is stored.
 803      * \param attachments    List of pairs of attachment ID and opaque format
 804      *                       requested for the drawable.
 805      * \param count          Number of attachment / format pairs stored in
 806      *                       \c attachments.
 807      * \param loaderPrivate  Loader's private data that was previously passed
 808      *                       into __DRIdri2ExtensionRec::createNewDrawable.
 809      */
 810     __DRIbuffer *(*getBuffersWithFormat)(__DRIdrawable *driDrawable,
 811                                          int *width, int *height,
 812                                          unsigned int *attachments, int count,
 813                                          int *out_count, void *loaderPrivate);
 814 };
 815
 816 /**
 817  * This extension provides alternative screen, drawable and context
 818  * constructors for DRI2.
 819  */
 820 #define __DRI_DRI2 "DRI_DRI2"
 821 #define __DRI_DRI2_VERSION 3
 822
 823 #define __DRI_API_OPENGL        0       /**< OpenGL compatibility profile */
 824 #define __DRI_API_GLES          1       /**< OpenGL ES 1.x */
 825 #define __DRI_API_GLES2         2       /**< OpenGL ES 2.x */
 826 #define __DRI_API_OPENGL_CORE   3       /**< OpenGL 3.2+ core profile */
 827 #define __DRI_API_GLES3         4       /**< OpenGL ES 3.x */
 828
 829 #define __DRI_CTX_ATTRIB_MAJOR_VERSION          0
 830 #define __DRI_CTX_ATTRIB_MINOR_VERSION          1
 831 #define __DRI_CTX_ATTRIB_FLAGS                  2
 832
 833 /**
 834  * \requires __DRI2_ROBUSTNESS.
 835  */
 836 #define __DRI_CTX_ATTRIB_RESET_STRATEGY         3
 837
 838 #define __DRI_CTX_FLAG_DEBUG                    0x00000001
 839 #define __DRI_CTX_FLAG_FORWARD_COMPATIBLE       0x00000002
 840
 841 /**
 842  * \requires __DRI2_ROBUSTNESS.
 843  */
 844 #define __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS     0x00000004
 845
 846 /**
 847  * \name Context reset strategies.
 848  */
 849 /*@{*/
 850 #define __DRI_CTX_RESET_NO_NOTIFICATION         0
 851 #define __DRI_CTX_RESET_LOSE_CONTEXT            1
 852 /*@}*/
 853
 854 /**
 855  * \name Reasons that __DRIdri2Extension::createContextAttribs might fail
 856  */
 857 /*@{*/
 858 /** Success! */
 859 #define __DRI_CTX_ERROR_SUCCESS                 0
 860
 861 /** Memory allocation failure */
 862 #define __DRI_CTX_ERROR_NO_MEMORY               1
 863
 864 /** Client requested an API (e.g., OpenGL ES 2.0) that the driver can't do. */
 865 #define __DRI_CTX_ERROR_BAD_API                 2
 866
 867 /** Client requested an API version that the driver can't do. */
 868 #define __DRI_CTX_ERROR_BAD_VERSION             3
 869
 870 /** Client requested a flag or combination of flags the driver can't do. */
 871 #define __DRI_CTX_ERROR_BAD_FLAG                4
 872
 873 /** Client requested an attribute the driver doesn't understand. */
 874 #define __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE       5
 875
 876 /** Client requested a flag the driver doesn't understand. */
 877 #define __DRI_CTX_ERROR_UNKNOWN_FLAG            6
 878 /*@}*/
 879
 880 struct __DRIdri2ExtensionRec {
 881     __DRIextension base;
 882
 883     __DRIscreen *(*createNewScreen)(int screen, int fd,
 884                                     const __DRIextension **extensions,
 885                                     const __DRIconfig ***driver_configs,
 886                                     void *loaderPrivate);
 887
 888     __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
 889                                         const __DRIconfig *config,
 890                                         void *loaderPrivate);
 891
 892     __DRIcontext *(*createNewContext)(__DRIscreen *screen,
 893                                       const __DRIconfig *config,
 894                                       __DRIcontext *shared,
 895                                       void *loaderPrivate);
 896
 897    /* Since version 2 */
 898    unsigned int (*getAPIMask)(__DRIscreen *screen);
 899
 900    __DRIcontext *(*createNewContextForAPI)(__DRIscreen *screen,
 901                                            int api,
 902                                            const __DRIconfig *config,
 903                                            __DRIcontext *shared,
 904                                            void *data);
 905
 906    __DRIbuffer *(*allocateBuffer)(__DRIscreen *screen,
 907                                   unsigned int attachment,
 908                                   unsigned int format,
 909                                   int width,
 910                                   int height);
 911    void (*releaseBuffer)(__DRIscreen *screen,
 912                          __DRIbuffer *buffer);
 913
 914    /**
 915     * Create a context for a particular API with a set of attributes
 916     *
 917     * \since version 3
 918     *
 919     * \sa __DRIswrastExtensionRec::createContextAttribs
 920     */
 921    __DRIcontext *(*createContextAttribs)(__DRIscreen *screen,
 922                                          int api,
 923                                          const __DRIconfig *config,
 924                                          __DRIcontext *shared,
 925                                          unsigned num_attribs,
 926                                          const uint32_t *attribs,
 927                                          unsigned *error,
 928                                          void *loaderPrivate);
 929 };
 930
 931
 932 /**
 933  * This extension provides functionality to enable various EGLImage
 934  * extensions.
 935  */
 936 #define __DRI_IMAGE "DRI_IMAGE"
 937 #define __DRI_IMAGE_VERSION 8
 938
 939 /**
 940  * These formats correspond to the similarly named MESA_FORMAT_*
 941  * tokens, except in the native endian of the CPU.  For example, on
 942  * little endian __DRI_IMAGE_FORMAT_XRGB8888 corresponds to
 943  * MESA_FORMAT_XRGB8888, but MESA_FORMAT_XRGB8888_REV on big endian.
 944  *
 945  * __DRI_IMAGE_FORMAT_NONE is for images that aren't directly usable
 946  * by the driver (YUV planar formats) but serve as a base image for
 947  * creating sub-images for the different planes within the image.
 948  *
 949  * R8, GR88 and NONE should not be used with createImageFormName or
 950  * createImage, and are returned by query from sub images created with
 951  * createImageFromNames (NONE, see above) and fromPlane (R8 & GR88).
 952  */
 953 #define __DRI_IMAGE_FORMAT_RGB565       0x1001
 954 #define __DRI_IMAGE_FORMAT_XRGB8888     0x1002
 955 #define __DRI_IMAGE_FORMAT_ARGB8888     0x1003
 956 #define __DRI_IMAGE_FORMAT_ABGR8888     0x1004
 957 #define __DRI_IMAGE_FORMAT_XBGR8888     0x1005
 958 #define __DRI_IMAGE_FORMAT_R8           0x1006 /* Since version 5 */
 959 #define __DRI_IMAGE_FORMAT_GR88         0x1007
 960 #define __DRI_IMAGE_FORMAT_NONE         0x1008
 961 #define __DRI_IMAGE_FORMAT_XRGB2101010  0x1009
 962 #define __DRI_IMAGE_FORMAT_ARGB2101010  0x100a
 963
 964 #define __DRI_IMAGE_USE_SHARE           0x0001
 965 #define __DRI_IMAGE_USE_SCANOUT         0x0002
 966 #define __DRI_IMAGE_USE_CURSOR          0x0004 /* Depricated */
 967 #define __DRI_IMAGE_USE_LINEAR          0x0008
 968
 969
 970 /**
 971  * Four CC formats that matches with WL_DRM_FORMAT_* from wayland_drm.h
 972  * and GBM_FORMAT_* from gbm.h, used with createImageFromNames.
 973  *
 974  * \since 5
 975  */
 976
 977 #define __DRI_IMAGE_FOURCC_RGB565       0x36314752
 978 #define __DRI_IMAGE_FOURCC_ARGB8888     0x34325241
 979 #define __DRI_IMAGE_FOURCC_XRGB8888     0x34325258
 980 #define __DRI_IMAGE_FOURCC_ABGR8888     0x34324241
 981 #define __DRI_IMAGE_FOURCC_XBGR8888     0x34324258
 982 #define __DRI_IMAGE_FOURCC_YUV410       0x39565559
 983 #define __DRI_IMAGE_FOURCC_YUV411       0x31315559
 984 #define __DRI_IMAGE_FOURCC_YUV420       0x32315559
 985 #define __DRI_IMAGE_FOURCC_YUV422       0x36315559
 986 #define __DRI_IMAGE_FOURCC_YUV444       0x34325559
 987 #define __DRI_IMAGE_FOURCC_NV12         0x3231564e
 988 #define __DRI_IMAGE_FOURCC_NV16         0x3631564e
 989 #define __DRI_IMAGE_FOURCC_YUYV         0x56595559
 990
 991
 992 /**
 993  * Queryable on images created by createImageFromNames.
 994  *
 995  * RGB and RGBA are may be usable directly as images but its still
 996  * recommended to call fromPlanar with plane == 0.
 997  *
 998  * Y_U_V, Y_UV and Y_XUXV all requires call to fromPlanar to create
 999  * usable sub-images, sampling from images return raw YUV data and
1000  * color conversion needs to be done in the shader.
1001  *
1002  * \since 5
1003  */
1004
1005 #define __DRI_IMAGE_COMPONENTS_RGB      0x3001
1006 #define __DRI_IMAGE_COMPONENTS_RGBA     0x3002
1007 #define __DRI_IMAGE_COMPONENTS_Y_U_V    0x3003
1008 #define __DRI_IMAGE_COMPONENTS_Y_UV     0x3004
1009 #define __DRI_IMAGE_COMPONENTS_Y_XUXV   0x3005
1010
1011
1012 /**
1013  * queryImage attributes
1014  */
1015
1016 #define __DRI_IMAGE_ATTRIB_STRIDE       0x2000
1017 #define __DRI_IMAGE_ATTRIB_HANDLE       0x2001
1018 #define __DRI_IMAGE_ATTRIB_NAME         0x2002
1019 #define __DRI_IMAGE_ATTRIB_FORMAT       0x2003 /* available in versions 3+ */
1020 #define __DRI_IMAGE_ATTRIB_WIDTH        0x2004 /* available in versions 4+ */
1021 #define __DRI_IMAGE_ATTRIB_HEIGHT       0x2005
1022 #define __DRI_IMAGE_ATTRIB_COMPONENTS   0x2006 /* available in versions 5+ */
1023 #define __DRI_IMAGE_ATTRIB_FD           0x2007 /* available in versions
1024                                                 * 7+. Each query will return a
1025                                                 * new fd. */
1026
1027 enum __DRIYUVColorSpace {
1028    __DRI_YUV_COLOR_SPACE_UNDEFINED = 0,
1029    __DRI_YUV_COLOR_SPACE_ITU_REC601 = 0x327F,
1030    __DRI_YUV_COLOR_SPACE_ITU_REC709 = 0x3280,
1031    __DRI_YUV_COLOR_SPACE_ITU_REC2020 = 0x3281
1032 };
1033
1034 enum __DRISampleRange {
1035    __DRI_YUV_RANGE_UNDEFINED = 0,
1036    __DRI_YUV_FULL_RANGE = 0x3282,
1037    __DRI_YUV_NARROW_RANGE = 0x3283
1038 };
1039
1040 enum __DRIChromaSiting {
1041    __DRI_YUV_CHROMA_SITING_UNDEFINED = 0,
1042    __DRI_YUV_CHROMA_SITING_0 = 0x3284,
1043    __DRI_YUV_CHROMA_SITING_0_5 = 0x3285
1044 };
1045
1046 /**
1047  * \name Reasons that __DRIimageExtensionRec::createImageFromTexture might fail
1048  */
1049 /*@{*/
1050 /** Success! */
1051 #define __DRI_IMAGE_ERROR_SUCCESS       0
1052
1053 /** Memory allocation failure */
1054 #define __DRI_IMAGE_ERROR_BAD_ALLOC     1
1055
1056 /** Client requested an invalid attribute for a texture object  */
1057 #define __DRI_IMAGE_ERROR_BAD_MATCH     2
1058
1059 /** Client requested an invalid texture object */
1060 #define __DRI_IMAGE_ERROR_BAD_PARAMETER 3
1061 /*@}*/
1062
1063 typedef struct __DRIimageRec          __DRIimage;
1064 typedef struct __DRIimageExtensionRec __DRIimageExtension;
1065 struct __DRIimageExtensionRec {
1066     __DRIextension base;
1067
1068     __DRIimage *(*createImageFromName)(__DRIscreen *screen,
1069                                        int width, int height, int format,
1070                                        int name, int pitch,
1071                                        void *loaderPrivate);
1072
1073     __DRIimage *(*createImageFromRenderbuffer)(__DRIcontext *context,
1074                                                int renderbuffer,
1075                                                void *loaderPrivate);
1076
1077     void (*destroyImage)(__DRIimage *image);
1078
1079     __DRIimage *(*createImage)(__DRIscreen *screen,
1080                                int width, int height, int format,
1081                                unsigned int use,
1082                                void *loaderPrivate);
1083
1084    GLboolean (*queryImage)(__DRIimage *image, int attrib, int *value);
1085
1086    /**
1087     * The new __DRIimage will share the content with the old one, see dup(2).
1088     */
1089    __DRIimage *(*dupImage)(__DRIimage *image, void *loaderPrivate);
1090
1091    /**
1092     * Validate that a __DRIimage can be used a certain way.
1093     *
1094     * \since 2
1095     */
1096    GLboolean (*validateUsage)(__DRIimage *image, unsigned int use);
1097
1098    /**
1099     * Unlike createImageFromName __DRI_IMAGE_FORMAT is not but instead
1100     * __DRI_IMAGE_FOURCC and strides are in bytes not pixels. Stride is
1101     * also per block and not per pixel (for non-RGB, see gallium blocks).
1102     *
1103     * \since 5
1104     */
1105    __DRIimage *(*createImageFromNames)(__DRIscreen *screen,
1106                                        int width, int height, int fourcc,
1107                                        int *names, int num_names,
1108                                        int *strides, int *offsets,
1109                                        void *loaderPrivate);
1110
1111    /**
1112     * Create an image out of a sub-region of a parent image.  This
1113     * entry point lets us create individual __DRIimages for different
1114     * planes in a planar buffer (typically yuv), for example.  While a
1115     * sub-image shares the underlying buffer object with the parent
1116     * image and other sibling sub-images, the life times of parent and
1117     * sub-images are not dependent.  Destroying the parent or a
1118     * sub-image doesn't affect other images.  The underlying buffer
1119     * object is free when no __DRIimage remains that references it.
1120     *
1121     * Sub-images may overlap, but rendering to overlapping sub-images
1122     * is undefined.
1123     *
1124     * \since 5
1125     */
1126     __DRIimage *(*fromPlanar)(__DRIimage *image, int plane,
1127                               void *loaderPrivate);
1128
1129     /**
1130      * Create image from texture.
1131      *
1132      * \since 6
1133      */
1134    __DRIimage *(*createImageFromTexture)(__DRIcontext *context,
1135                                          int target,
1136                                          unsigned texture,
1137                                          int depth,
1138                                          int level,
1139                                          unsigned *error,
1140                                          void *loaderPrivate);
1141    /**
1142     * Like createImageFromNames, but takes a prime fd instead.
1143     *
1144     * \since 7
1145     */
1146    __DRIimage *(*createImageFromFds)(__DRIscreen *screen,
1147                                      int width, int height, int fourcc,
1148                                      int *fds, int num_fds,
1149                                      int *strides, int *offsets,
1150                                      void *loaderPrivate);
1151
1152    /**
1153     * Like createImageFromFds, but takes additional attributes.
1154     *
1155     * For EGL_EXT_image_dma_buf_import.
1156     *
1157     * \since 8
1158     */
1159    __DRIimage *(*createImageFromDmaBufs)(__DRIscreen *screen,
1160                                          int width, int height, int fourcc,
1161                                          int *fds, int num_fds,
1162                                          int *strides, int *offsets,
1163                                          enum __DRIYUVColorSpace color_space,
1164                                          enum __DRISampleRange sample_range,
1165                                          enum __DRIChromaSiting horiz_siting,
1166                                          enum __DRIChromaSiting vert_siting,
1167                                          unsigned *error,
1168                                          void *loaderPrivate);
1169 };
1170
1171
1172 /**
1173  * This extension must be implemented by the loader and passed to the
1174  * driver at screen creation time.  The EGLImage entry points in the
1175  * various client APIs take opaque EGLImage handles and use this
1176  * extension to map them to a __DRIimage.  At version 1, this
1177  * extensions allows mapping EGLImage pointers to __DRIimage pointers,
1178  * but future versions could support other EGLImage-like, opaque types
1179  * with new lookup functions.
1180  */
1181 #define __DRI_IMAGE_LOOKUP "DRI_IMAGE_LOOKUP"
1182 #define __DRI_IMAGE_LOOKUP_VERSION 1
1183
1184 typedef struct __DRIimageLookupExtensionRec __DRIimageLookupExtension;
1185 struct __DRIimageLookupExtensionRec {
1186     __DRIextension base;
1187
1188     __DRIimage *(*lookupEGLImage)(__DRIscreen *screen, void *image,
1189                                   void *loaderPrivate);
1190 };
1191
1192 /**
1193  * This extension allows for common DRI2 options
1194  */
1195 #define __DRI2_CONFIG_QUERY "DRI_CONFIG_QUERY"
1196 #define __DRI2_CONFIG_QUERY_VERSION 1
1197
1198 typedef struct __DRI2configQueryExtensionRec __DRI2configQueryExtension;
1199 struct __DRI2configQueryExtensionRec {
1200    __DRIextension base;
1201
1202    int (*configQueryb)(__DRIscreen *screen, const char *var, GLboolean *val);
1203    int (*configQueryi)(__DRIscreen *screen, const char *var, GLint *val);
1204    int (*configQueryf)(__DRIscreen *screen, const char *var, GLfloat *val);
1205 };
1206
1207 /**
1208  * Robust context driver extension.
1209  *
1210  * Existence of this extension means the driver can accept the
1211  * \c __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag and the
1212  * \c __DRI_CTX_ATTRIB_RESET_STRATEGY attribute in
1213  * \c __DRIdri2ExtensionRec::createContextAttribs.
1214  */
1215 #define __DRI2_ROBUSTNESS "DRI_Robustness"
1216 #define __DRI2_ROBUSTNESS_VERSION 1
1217
1218 typedef struct __DRIrobustnessExtensionRec __DRIrobustnessExtension;
1219 struct __DRIrobustnessExtensionRec {
1220    __DRIextension base;
1221 };
1222
1223 /**
1224  * DRI config options extension.
1225  *
1226  * This extension provides the XML string containing driver options for use by
1227  * the loader in supporting the driconf application.
1228  */
1229 #define __DRI_CONFIG_OPTIONS "DRI_ConfigOptions"
1230 #define __DRI_CONFIG_OPTIONS_VERSION 1
1231
1232 typedef struct __DRIconfigOptionsExtensionRec {
1233    __DRIextension base;
1234    const char *xml;
1235 } __DRIconfigOptionsExtension;
1236
1237 #endif