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
 277 struct __DRI2flushExtensionRec {
 278     __DRIextension base;
 279     void (*flush)(__DRIdrawable *drawable);
 280
 281     /**
 282      * Ask the driver to call getBuffers/getBuffersWithFormat before
 283      * it starts rendering again.
 284      *
 285      * \param drawable the drawable to invalidate
 286      *
 287      * \since 3
 288      */
 289     void (*invalidate)(__DRIdrawable *drawable);
 290
 291     /**
 292      * This function reduces the number of flushes in the driver by combining
 293      * several operations into one call.
 294      *
 295      * It can:
 296      * - throttle
 297      * - flush a drawable
 298      * - flush a context
 299      *
 300      * \param context           the context
 301      * \param drawable          the drawable to flush
 302      * \param flags             a combination of _DRI2_FLUSH_xxx flags
 303      * \param throttle_reason   the reason for throttling, 0 = no throttling
 304      *
 305      * \since 4
 306      */
 307     void (*flush_with_flags)(__DRIcontext *ctx,
 308                              __DRIdrawable *drawable,
 309                              unsigned flags,
 310                              enum __DRI2throttleReason throttle_reason);
 311 };
 312
 313
 314 /**
 315  * Extension that the driver uses to request
 316  * throttle callbacks.
 317  */
 318
 319 #define __DRI2_THROTTLE "DRI2_Throttle"
 320 #define __DRI2_THROTTLE_VERSION 1
 321
 322 enum __DRI2throttleReason {
 323    __DRI2_THROTTLE_SWAPBUFFER,
 324    __DRI2_THROTTLE_COPYSUBBUFFER,
 325    __DRI2_THROTTLE_FLUSHFRONT
 326 };
 327
 328 struct __DRI2throttleExtensionRec {
 329    __DRIextension base;
 330    void (*throttle)(__DRIcontext *ctx,
 331                     __DRIdrawable *drawable,
 332                     enum __DRI2throttleReason reason);
 333 };
 334
 335 /**
 336  * XML document describing the configuration options supported by the
 337  * driver.
 338  */
 339 extern const char __driConfigOptions[];
 340
 341 /*@}*/
 342
 343 /**
 344  * The following extensions describe loader features that the DRI
 345  * driver can make use of.  Some of these are mandatory, such as the
 346  * getDrawableInfo extension for DRI and the DRI Loader extensions for
 347  * DRI2, while others are optional, and if present allow the driver to
 348  * expose certain features.  The loader pass in a NULL terminated
 349  * array of these extensions to the driver in the createNewScreen
 350  * constructor.
 351  */
 352
 353 typedef struct __DRIgetDrawableInfoExtensionRec __DRIgetDrawableInfoExtension;
 354 typedef struct __DRIsystemTimeExtensionRec __DRIsystemTimeExtension;
 355 typedef struct __DRIdamageExtensionRec __DRIdamageExtension;
 356 typedef struct __DRIloaderExtensionRec __DRIloaderExtension;
 357 typedef struct __DRIswrastLoaderExtensionRec __DRIswrastLoaderExtension;
 358
 359
 360 /**
 361  * Callback to getDrawableInfo protocol
 362  */
 363 #define __DRI_GET_DRAWABLE_INFO "DRI_GetDrawableInfo"
 364 #define __DRI_GET_DRAWABLE_INFO_VERSION 1
 365 struct __DRIgetDrawableInfoExtensionRec {
 366     __DRIextension base;
 367
 368     /**
 369      * This function is used to get information about the position, size, and
 370      * clip rects of a drawable.
 371      */
 372     GLboolean (* getDrawableInfo) ( __DRIdrawable *drawable,
 373         unsigned int * index, unsigned int * stamp,
 374         int * x, int * y, int * width, int * height,
 375         int * numClipRects, drm_clip_rect_t ** pClipRects,
 376         int * backX, int * backY,
 377         int * numBackClipRects, drm_clip_rect_t ** pBackClipRects,
 378         void *loaderPrivate);
 379 };
 380
 381 /**
 382  * Callback to get system time for media stream counter extensions.
 383  */
 384 #define __DRI_SYSTEM_TIME "DRI_SystemTime"
 385 #define __DRI_SYSTEM_TIME_VERSION 1
 386 struct __DRIsystemTimeExtensionRec {
 387     __DRIextension base;
 388
 389     /**
 390      * Get the 64-bit unadjusted system time (UST).
 391      */
 392     int (*getUST)(int64_t * ust);
 393
 394     /**
 395      * Get the media stream counter (MSC) rate.
 396      *
 397      * Matching the definition in GLX_OML_sync_control, this function returns
 398      * the rate of the "media stream counter".  In practical terms, this is
 399      * the frame refresh rate of the display.
 400      */
 401     GLboolean (*getMSCRate)(__DRIdrawable *draw,
 402                             int32_t * numerator, int32_t * denominator,
 403                             void *loaderPrivate);
 404 };
 405
 406 /**
 407  * Damage reporting
 408  */
 409 #define __DRI_DAMAGE "DRI_Damage"
 410 #define __DRI_DAMAGE_VERSION 1
 411 struct __DRIdamageExtensionRec {
 412     __DRIextension base;
 413
 414     /**
 415      * Reports areas of the given drawable which have been modified by the
 416      * driver.
 417      *
 418      * \param drawable which the drawing was done to.
 419      * \param rects rectangles affected, with the drawable origin as the
 420      *        origin.
 421      * \param x X offset of the drawable within the screen (used in the
 422      *        front_buffer case)
 423      * \param y Y offset of the drawable within the screen.
 424      * \param front_buffer boolean flag for whether the drawing to the
 425      *        drawable was actually done directly to the front buffer (instead
 426      *        of backing storage, for example)
 427      * \param loaderPrivate the data passed in at createNewDrawable time
 428      */
 429     void (*reportDamage)(__DRIdrawable *draw,
 430                          int x, int y,
 431                          drm_clip_rect_t *rects, int num_rects,
 432                          GLboolean front_buffer,
 433                          void *loaderPrivate);
 434 };
 435
 436 #define __DRI_SWRAST_IMAGE_OP_DRAW      1
 437 #define __DRI_SWRAST_IMAGE_OP_CLEAR     2
 438 #define __DRI_SWRAST_IMAGE_OP_SWAP      3
 439
 440 /**
 441  * SWRast Loader extension.
 442  */
 443 #define __DRI_SWRAST_LOADER "DRI_SWRastLoader"
 444 #define __DRI_SWRAST_LOADER_VERSION 1
 445 struct __DRIswrastLoaderExtensionRec {
 446     __DRIextension base;
 447
 448     /*
 449      * Drawable position and size
 450      */
 451     void (*getDrawableInfo)(__DRIdrawable *drawable,
 452                             int *x, int *y, int *width, int *height,
 453                             void *loaderPrivate);
 454
 455     /**
 456      * Put image to drawable
 457      */
 458     void (*putImage)(__DRIdrawable *drawable, int op,
 459                      int x, int y, int width, int height,
 460                      char *data, void *loaderPrivate);
 461
 462     /**
 463      * Get image from readable
 464      */
 465     void (*getImage)(__DRIdrawable *readable,
 466                      int x, int y, int width, int height,
 467                      char *data, void *loaderPrivate);
 468 };
 469
 470 /**
 471  * Invalidate loader extension.  The presence of this extension
 472  * indicates to the DRI driver that the loader will call invalidate in
 473  * the __DRI2_FLUSH extension, whenever the needs to query for new
 474  * buffers.  This means that the DRI driver can drop the polling in
 475  * glViewport().
 476  *
 477  * The extension doesn't provide any functionality, it's only use to
 478  * indicate to the driver that it can use the new semantics.  A DRI
 479  * driver can use this to switch between the different semantics or
 480  * just refuse to initialize if this extension isn't present.
 481  */
 482 #define __DRI_USE_INVALIDATE "DRI_UseInvalidate"
 483 #define __DRI_USE_INVALIDATE_VERSION 1
 484
 485 typedef struct __DRIuseInvalidateExtensionRec __DRIuseInvalidateExtension;
 486 struct __DRIuseInvalidateExtensionRec {
 487    __DRIextension base;
 488 };
 489
 490 /**
 491  * The remaining extensions describe driver extensions, immediately
 492  * available interfaces provided by the driver.  To start using the
 493  * driver, dlsym() for the __DRI_DRIVER_EXTENSIONS symbol and look for
 494  * the extension you need in the array.
 495  */
 496 #define __DRI_DRIVER_EXTENSIONS "__driDriverExtensions"
 497
 498 /**
 499  * Tokens for __DRIconfig attribs.  A number of attributes defined by
 500  * GLX or EGL standards are not in the table, as they must be provided
 501  * by the loader.  For example, FBConfig ID or visual ID, drawable type.
 502  */
 503
 504 #define __DRI_ATTRIB_BUFFER_SIZE                 1
 505 #define __DRI_ATTRIB_LEVEL                       2
 506 #define __DRI_ATTRIB_RED_SIZE                    3
 507 #define __DRI_ATTRIB_GREEN_SIZE                  4
 508 #define __DRI_ATTRIB_BLUE_SIZE                   5
 509 #define __DRI_ATTRIB_LUMINANCE_SIZE              6
 510 #define __DRI_ATTRIB_ALPHA_SIZE                  7
 511 #define __DRI_ATTRIB_ALPHA_MASK_SIZE             8
 512 #define __DRI_ATTRIB_DEPTH_SIZE                  9
 513 #define __DRI_ATTRIB_STENCIL_SIZE               10
 514 #define __DRI_ATTRIB_ACCUM_RED_SIZE             11
 515 #define __DRI_ATTRIB_ACCUM_GREEN_SIZE           12
 516 #define __DRI_ATTRIB_ACCUM_BLUE_SIZE            13
 517 #define __DRI_ATTRIB_ACCUM_ALPHA_SIZE           14
 518 #define __DRI_ATTRIB_SAMPLE_BUFFERS             15
 519 #define __DRI_ATTRIB_SAMPLES                    16
 520 #define __DRI_ATTRIB_RENDER_TYPE                17
 521 #define __DRI_ATTRIB_CONFIG_CAVEAT              18
 522 #define __DRI_ATTRIB_CONFORMANT                 19
 523 #define __DRI_ATTRIB_DOUBLE_BUFFER              20
 524 #define __DRI_ATTRIB_STEREO                     21
 525 #define __DRI_ATTRIB_AUX_BUFFERS                22
 526 #define __DRI_ATTRIB_TRANSPARENT_TYPE           23
 527 #define __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE    24
 528 #define __DRI_ATTRIB_TRANSPARENT_RED_VALUE      25
 529 #define __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE    26
 530 #define __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE     27
 531 #define __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE    28
 532 #define __DRI_ATTRIB_FLOAT_MODE                 29
 533 #define __DRI_ATTRIB_RED_MASK                   30
 534 #define __DRI_ATTRIB_GREEN_MASK                 31
 535 #define __DRI_ATTRIB_BLUE_MASK                  32
 536 #define __DRI_ATTRIB_ALPHA_MASK                 33
 537 #define __DRI_ATTRIB_MAX_PBUFFER_WIDTH          34
 538 #define __DRI_ATTRIB_MAX_PBUFFER_HEIGHT         35
 539 #define __DRI_ATTRIB_MAX_PBUFFER_PIXELS         36
 540 #define __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH      37
 541 #define __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT     38
 542 #define __DRI_ATTRIB_VISUAL_SELECT_GROUP        39
 543 #define __DRI_ATTRIB_SWAP_METHOD                40
 544 #define __DRI_ATTRIB_MAX_SWAP_INTERVAL          41
 545 #define __DRI_ATTRIB_MIN_SWAP_INTERVAL          42
 546 #define __DRI_ATTRIB_BIND_TO_TEXTURE_RGB        43
 547 #define __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA       44
 548 #define __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE     45
 549 #define __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS    46
 550 #define __DRI_ATTRIB_YINVERTED                  47
 551 #define __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE   48
 552
 553 /* __DRI_ATTRIB_RENDER_TYPE */
 554 #define __DRI_ATTRIB_RGBA_BIT                   0x01
 555 #define __DRI_ATTRIB_COLOR_INDEX_BIT            0x02
 556 #define __DRI_ATTRIB_LUMINANCE_BIT              0x04
 557
 558 /* __DRI_ATTRIB_CONFIG_CAVEAT */
 559 #define __DRI_ATTRIB_SLOW_BIT                   0x01
 560 #define __DRI_ATTRIB_NON_CONFORMANT_CONFIG      0x02
 561
 562 /* __DRI_ATTRIB_TRANSPARENT_TYPE */
 563 #define __DRI_ATTRIB_TRANSPARENT_RGB            0x00
 564 #define __DRI_ATTRIB_TRANSPARENT_INDEX          0x01
 565
 566 /* __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS  */
 567 #define __DRI_ATTRIB_TEXTURE_1D_BIT             0x01
 568 #define __DRI_ATTRIB_TEXTURE_2D_BIT             0x02
 569 #define __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT      0x04
 570
 571 /**
 572  * This extension defines the core DRI functionality.
 573  */
 574 #define __DRI_CORE "DRI_Core"
 575 #define __DRI_CORE_VERSION 1
 576
 577 struct __DRIcoreExtensionRec {
 578     __DRIextension base;
 579
 580     __DRIscreen *(*createNewScreen)(int screen, int fd,
 581                                     unsigned int sarea_handle,
 582                                     const __DRIextension **extensions,
 583                                     const __DRIconfig ***driverConfigs,
 584                                     void *loaderPrivate);
 585
 586     void (*destroyScreen)(__DRIscreen *screen);
 587
 588     const __DRIextension **(*getExtensions)(__DRIscreen *screen);
 589
 590     int (*getConfigAttrib)(const __DRIconfig *config,
 591                            unsigned int attrib,
 592                            unsigned int *value);
 593
 594     int (*indexConfigAttrib)(const __DRIconfig *config, int index,
 595                              unsigned int *attrib, unsigned int *value);
 596
 597     __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
 598                                         const __DRIconfig *config,
 599                                         unsigned int drawable_id,
 600                                         unsigned int head,
 601                                         void *loaderPrivate);
 602
 603     void (*destroyDrawable)(__DRIdrawable *drawable);
 604
 605     void (*swapBuffers)(__DRIdrawable *drawable);
 606
 607     __DRIcontext *(*createNewContext)(__DRIscreen *screen,
 608                                       const __DRIconfig *config,
 609                                       __DRIcontext *shared,
 610                                       void *loaderPrivate);
 611
 612     int (*copyContext)(__DRIcontext *dest,
 613                        __DRIcontext *src,
 614                        unsigned long mask);
 615
 616     void (*destroyContext)(__DRIcontext *context);
 617
 618     int (*bindContext)(__DRIcontext *ctx,
 619                        __DRIdrawable *pdraw,
 620                        __DRIdrawable *pread);
 621
 622     int (*unbindContext)(__DRIcontext *ctx);
 623 };
 624
 625 /**
 626  * Stored version of some component (i.e., server-side DRI module, kernel-side
 627  * DRM, etc.).
 628  *
 629  * \todo
 630  * There are several data structures that explicitly store a major version,
 631  * minor version, and patch level.  These structures should be modified to
 632  * have a \c __DRIversionRec instead.
 633  */
 634 struct __DRIversionRec {
 635     int    major;        /**< Major version number. */
 636     int    minor;        /**< Minor version number. */
 637     int    patch;        /**< Patch-level. */
 638 };
 639
 640 /**
 641  * Framebuffer information record.  Used by libGL to communicate information
 642  * about the framebuffer to the driver's \c __driCreateNewScreen function.
 643  *
 644  * In XFree86, most of this information is derrived from data returned by
 645  * calling \c XF86DRIGetDeviceInfo.
 646  *
 647  * \sa XF86DRIGetDeviceInfo __DRIdisplayRec::createNewScreen
 648  *     __driUtilCreateNewScreen CallCreateNewScreen
 649  *
 650  * \bug This structure could be better named.
 651  */
 652 struct __DRIframebufferRec {
 653     unsigned char *base;    /**< Framebuffer base address in the CPU's
 654                              * address space.  This value is calculated by
 655                              * calling \c drmMap on the framebuffer handle
 656                              * returned by \c XF86DRIGetDeviceInfo (or a
 657                              * similar function).
 658                              */
 659     int size;               /**< Framebuffer size, in bytes. */
 660     int stride;             /**< Number of bytes from one line to the next. */
 661     int width;              /**< Pixel width of the framebuffer. */
 662     int height;             /**< Pixel height of the framebuffer. */
 663     int dev_priv_size;      /**< Size of the driver's dev-priv structure. */
 664     void *dev_priv;         /**< Pointer to the driver's dev-priv structure. */
 665 };
 666
 667
 668 /**
 669  * This extension provides alternative screen, drawable and context
 670  * constructors for legacy DRI functionality.  This is used in
 671  * conjunction with the core extension.
 672  */
 673 #define __DRI_LEGACY "DRI_Legacy"
 674 #define __DRI_LEGACY_VERSION 1
 675
 676 struct __DRIlegacyExtensionRec {
 677     __DRIextension base;
 678
 679     __DRIscreen *(*createNewScreen)(int screen,
 680                                     const __DRIversion *ddx_version,
 681                                     const __DRIversion *dri_version,
 682                                     const __DRIversion *drm_version,
 683                                     const __DRIframebuffer *frame_buffer,
 684                                     void *pSAREA, int fd,
 685                                     const __DRIextension **extensions,
 686                                     const __DRIconfig ***driver_configs,
 687                                     void *loaderPrivate);
 688
 689     __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
 690                                         const __DRIconfig *config,
 691                                         drm_drawable_t hwDrawable,
 692                                         int renderType, const int *attrs,
 693                                         void *loaderPrivate);
 694
 695     __DRIcontext *(*createNewContext)(__DRIscreen *screen,
 696                                       const __DRIconfig *config,
 697                                       int render_type,
 698                                       __DRIcontext *shared,
 699                                       drm_context_t hwContext,
 700                                       void *loaderPrivate);
 701 };
 702
 703 /**
 704  * This extension provides alternative screen, drawable and context
 705  * constructors for swrast DRI functionality.  This is used in
 706  * conjunction with the core extension.
 707  */
 708 #define __DRI_SWRAST "DRI_SWRast"
 709 #define __DRI_SWRAST_VERSION 3
 710
 711 struct __DRIswrastExtensionRec {
 712     __DRIextension base;
 713
 714     __DRIscreen *(*createNewScreen)(int screen,
 715                                     const __DRIextension **extensions,
 716                                     const __DRIconfig ***driver_configs,
 717                                     void *loaderPrivate);
 718
 719     __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
 720                                         const __DRIconfig *config,
 721                                         void *loaderPrivate);
 722
 723    /* Since version 2 */
 724    __DRIcontext *(*createNewContextForAPI)(__DRIscreen *screen,
 725                                            int api,
 726                                            const __DRIconfig *config,
 727                                            __DRIcontext *shared,
 728                                            void *data);
 729
 730    /**
 731     * Create a context for a particular API with a set of attributes
 732     *
 733     * \since version 3
 734     *
 735     * \sa __DRIdri2ExtensionRec::createContextAttribs
 736     */
 737    __DRIcontext *(*createContextAttribs)(__DRIscreen *screen,
 738                                          int api,
 739                                          const __DRIconfig *config,
 740                                          __DRIcontext *shared,
 741                                          unsigned num_attribs,
 742                                          const uint32_t *attribs,
 743                                          unsigned *error,
 744                                          void *loaderPrivate);
 745 };
 746
 747 /**
 748  * DRI2 Loader extension.
 749  */
 750 #define __DRI_BUFFER_FRONT_LEFT         0
 751 #define __DRI_BUFFER_BACK_LEFT          1
 752 #define __DRI_BUFFER_FRONT_RIGHT        2
 753 #define __DRI_BUFFER_BACK_RIGHT         3
 754 #define __DRI_BUFFER_DEPTH              4
 755 #define __DRI_BUFFER_STENCIL            5
 756 #define __DRI_BUFFER_ACCUM              6
 757 #define __DRI_BUFFER_FAKE_FRONT_LEFT    7
 758 #define __DRI_BUFFER_FAKE_FRONT_RIGHT   8
 759 #define __DRI_BUFFER_DEPTH_STENCIL      9  /**< Only available with DRI2 1.1 */
 760 #define __DRI_BUFFER_HIZ                10
 761
 762 /* Inofficial and for internal use. Increase when adding a new buffer token. */
 763 #define __DRI_BUFFER_COUNT              11
 764
 765 struct __DRIbufferRec {
 766     unsigned int attachment;
 767     unsigned int name;
 768     unsigned int pitch;
 769     unsigned int cpp;
 770     unsigned int flags;
 771 };
 772
 773 #define __DRI_DRI2_LOADER "DRI_DRI2Loader"
 774 #define __DRI_DRI2_LOADER_VERSION 3
 775 struct __DRIdri2LoaderExtensionRec {
 776     __DRIextension base;
 777
 778     __DRIbuffer *(*getBuffers)(__DRIdrawable *driDrawable,
 779                                int *width, int *height,
 780                                unsigned int *attachments, int count,
 781                                int *out_count, void *loaderPrivate);
 782
 783     /**
 784      * Flush pending front-buffer rendering
 785      *
 786      * Any rendering that has been performed to the
 787      * \c __DRI_BUFFER_FAKE_FRONT_LEFT will be flushed to the
 788      * \c __DRI_BUFFER_FRONT_LEFT.
 789      *
 790      * \param driDrawable    Drawable whose front-buffer is to be flushed
 791      * \param loaderPrivate  Loader's private data that was previously passed
 792      *                       into __DRIdri2ExtensionRec::createNewDrawable
 793      */
 794     void (*flushFrontBuffer)(__DRIdrawable *driDrawable, void *loaderPrivate);
 795
 796
 797     /**
 798      * Get list of buffers from the server
 799      *
 800      * Gets a list of buffer for the specified set of attachments.  Unlike
 801      * \c ::getBuffers, this function takes a list of attachments paired with
 802      * opaque \c unsigned \c int value describing the format of the buffer.
 803      * It is the responsibility of the caller to know what the service that
 804      * allocates the buffers will expect to receive for the format.
 805      *
 806      * \param driDrawable    Drawable whose buffers are being queried.
 807      * \param width          Output where the width of the buffers is stored.
 808      * \param height         Output where the height of the buffers is stored.
 809      * \param attachments    List of pairs of attachment ID and opaque format
 810      *                       requested for the drawable.
 811      * \param count          Number of attachment / format pairs stored in
 812      *                       \c attachments.
 813      * \param loaderPrivate  Loader's private data that was previously passed
 814      *                       into __DRIdri2ExtensionRec::createNewDrawable.
 815      */
 816     __DRIbuffer *(*getBuffersWithFormat)(__DRIdrawable *driDrawable,
 817                                          int *width, int *height,
 818                                          unsigned int *attachments, int count,
 819                                          int *out_count, void *loaderPrivate);
 820 };
 821
 822 /**
 823  * This extension provides alternative screen, drawable and context
 824  * constructors for DRI2.
 825  */
 826 #define __DRI_DRI2 "DRI_DRI2"
 827 #define __DRI_DRI2_VERSION 3
 828
 829 #define __DRI_API_OPENGL        0       /**< OpenGL compatibility profile */
 830 #define __DRI_API_GLES          1       /**< OpenGL ES 1.x */
 831 #define __DRI_API_GLES2         2       /**< OpenGL ES 2.0 or 3.0 */
 832 #define __DRI_API_OPENGL_CORE   3       /**< OpenGL 3.2+ core profile */
 833
 834 #define __DRI_CTX_ATTRIB_MAJOR_VERSION          0
 835 #define __DRI_CTX_ATTRIB_MINOR_VERSION          1
 836 #define __DRI_CTX_ATTRIB_FLAGS                  2
 837
 838 /**
 839  * \requires __DRI2_ROBUSTNESS.
 840  */
 841 #define __DRI_CTX_ATTRIB_RESET_STRATEGY         3
 842
 843 #define __DRI_CTX_FLAG_DEBUG                    0x00000001
 844 #define __DRI_CTX_FLAG_FORWARD_COMPATIBLE       0x00000002
 845
 846 /**
 847  * \requires __DRI2_ROBUSTNESS.
 848  */
 849 #define __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS     0x00000004
 850
 851 /**
 852  * \name Context reset strategies.
 853  */
 854 /*@{*/
 855 #define __DRI_CTX_RESET_NO_NOTIFICATION         0
 856 #define __DRI_CTX_RESET_LOSE_CONTEXT            1
 857 /*@}*/
 858
 859 /**
 860  * \name Reasons that __DRIdri2Extension::createContextAttribs might fail
 861  */
 862 /*@{*/
 863 /** Success! */
 864 #define __DRI_CTX_ERROR_SUCCESS                 0
 865
 866 /** Memory allocation failure */
 867 #define __DRI_CTX_ERROR_NO_MEMORY               1
 868
 869 /** Client requested an API (e.g., OpenGL ES 2.0) that the driver can't do. */
 870 #define __DRI_CTX_ERROR_BAD_API                 2
 871
 872 /** Client requested an API version that the driver can't do. */
 873 #define __DRI_CTX_ERROR_BAD_VERSION             3
 874
 875 /** Client requested a flag or combination of flags the driver can't do. */
 876 #define __DRI_CTX_ERROR_BAD_FLAG                4
 877
 878 /** Client requested an attribute the driver doesn't understand. */
 879 #define __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE       5
 880
 881 /** Client requested a flag the driver doesn't understand. */
 882 #define __DRI_CTX_ERROR_UNKNOWN_FLAG            6
 883 /*@}*/
 884
 885 struct __DRIdri2ExtensionRec {
 886     __DRIextension base;
 887
 888     __DRIscreen *(*createNewScreen)(int screen, int fd,
 889                                     const __DRIextension **extensions,
 890                                     const __DRIconfig ***driver_configs,
 891                                     void *loaderPrivate);
 892
 893     __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
 894                                         const __DRIconfig *config,
 895                                         void *loaderPrivate);
 896
 897     __DRIcontext *(*createNewContext)(__DRIscreen *screen,
 898                                       const __DRIconfig *config,
 899                                       __DRIcontext *shared,
 900                                       void *loaderPrivate);
 901
 902    /* Since version 2 */
 903    unsigned int (*getAPIMask)(__DRIscreen *screen);
 904
 905    __DRIcontext *(*createNewContextForAPI)(__DRIscreen *screen,
 906                                            int api,
 907                                            const __DRIconfig *config,
 908                                            __DRIcontext *shared,
 909                                            void *data);
 910
 911    __DRIbuffer *(*allocateBuffer)(__DRIscreen *screen,
 912                                   unsigned int attachment,
 913                                   unsigned int format,
 914                                   int width,
 915                                   int height);
 916    void (*releaseBuffer)(__DRIscreen *screen,
 917                          __DRIbuffer *buffer);
 918
 919    /**
 920     * Create a context for a particular API with a set of attributes
 921     *
 922     * \since version 3
 923     *
 924     * \sa __DRIswrastExtensionRec::createContextAttribs
 925     */
 926    __DRIcontext *(*createContextAttribs)(__DRIscreen *screen,
 927                                          int api,
 928                                          const __DRIconfig *config,
 929                                          __DRIcontext *shared,
 930                                          unsigned num_attribs,
 931                                          const uint32_t *attribs,
 932                                          unsigned *error,
 933                                          void *loaderPrivate);
 934 };
 935
 936
 937 /**
 938  * This extension provides functionality to enable various EGLImage
 939  * extensions.
 940  */
 941 #define __DRI_IMAGE "DRI_IMAGE"
 942 #define __DRI_IMAGE_VERSION 5
 943
 944 /**
 945  * These formats correspond to the similarly named MESA_FORMAT_*
 946  * tokens, except in the native endian of the CPU.  For example, on
 947  * little endian __DRI_IMAGE_FORMAT_XRGB8888 corresponds to
 948  * MESA_FORMAT_XRGB8888, but MESA_FORMAT_XRGB8888_REV on big endian.
 949  *
 950  * __DRI_IMAGE_FORMAT_NONE is for images that aren't directly usable
 951  * by the driver (YUV planar formats) but serve as a base image for
 952  * creating sub-images for the different planes within the image.
 953  *
 954  * R8, GR88 and NONE should not be used with createImageFormName or
 955  * createImage, and are returned by query from sub images created with
 956  * createImageFromNames (NONE, see above) and fromPlane (R8 & GR88).
 957  */
 958 #define __DRI_IMAGE_FORMAT_RGB565       0x1001
 959 #define __DRI_IMAGE_FORMAT_XRGB8888     0x1002
 960 #define __DRI_IMAGE_FORMAT_ARGB8888     0x1003
 961 #define __DRI_IMAGE_FORMAT_ABGR8888     0x1004
 962 #define __DRI_IMAGE_FORMAT_XBGR8888     0x1005
 963 #define __DRI_IMAGE_FORMAT_R8           0x1006 /* Since version 5 */
 964 #define __DRI_IMAGE_FORMAT_GR88         0x1007
 965 #define __DRI_IMAGE_FORMAT_NONE         0x1008
 966
 967 #define __DRI_IMAGE_USE_SHARE           0x0001
 968 #define __DRI_IMAGE_USE_SCANOUT         0x0002
 969 #define __DRI_IMAGE_USE_CURSOR          0x0004 /* Depricated */
 970
 971
 972 /**
 973  * Four CC formats that matches with WL_DRM_FORMAT_* from wayland_drm.h
 974  * and GBM_FORMAT_* from gbm.h, used with createImageFromNames.
 975  *
 976  * \since 5
 977  */
 978
 979 #define __DRI_IMAGE_FOURCC_RGB565       0x36314752
 980 #define __DRI_IMAGE_FOURCC_ARGB8888     0x34325241
 981 #define __DRI_IMAGE_FOURCC_XRGB8888     0x34325258
 982 #define __DRI_IMAGE_FOURCC_ABGR8888     0x34324241
 983 #define __DRI_IMAGE_FOURCC_XBGR8888     0x34324258
 984 #define __DRI_IMAGE_FOURCC_YUV410       0x39565559
 985 #define __DRI_IMAGE_FOURCC_YUV411       0x31315559
 986 #define __DRI_IMAGE_FOURCC_YUV420       0x32315559
 987 #define __DRI_IMAGE_FOURCC_YUV422       0x36315559
 988 #define __DRI_IMAGE_FOURCC_YUV444       0x34325559
 989 #define __DRI_IMAGE_FOURCC_NV12         0x3231564e
 990 #define __DRI_IMAGE_FOURCC_NV16         0x3631564e
 991 #define __DRI_IMAGE_FOURCC_YUYV         0x56595559
 992
 993
 994 /**
 995  * Queryable on images created by createImageFromNames.
 996  *
 997  * RGB and RGBA are may be usable directly as images but its still
 998  * recommended to call fromPlanar with plane == 0.
 999  *
1000  * Y_U_V, Y_UV and Y_XUXV all requires call to fromPlanar to create
1001  * usable sub-images, sampling from images return raw YUV data and
1002  * color conversion needs to be done in the shader.
1003  *
1004  * \since 5
1005  */
1006
1007 #define __DRI_IMAGE_COMPONENTS_RGB      0x3001
1008 #define __DRI_IMAGE_COMPONENTS_RGBA     0x3002
1009 #define __DRI_IMAGE_COMPONENTS_Y_U_V    0x3003
1010 #define __DRI_IMAGE_COMPONENTS_Y_UV     0x3004
1011 #define __DRI_IMAGE_COMPONENTS_Y_XUXV   0x3005
1012
1013
1014 /**
1015  * queryImage attributes
1016  */
1017
1018 #define __DRI_IMAGE_ATTRIB_STRIDE       0x2000
1019 #define __DRI_IMAGE_ATTRIB_HANDLE       0x2001
1020 #define __DRI_IMAGE_ATTRIB_NAME         0x2002
1021 #define __DRI_IMAGE_ATTRIB_FORMAT       0x2003 /* available in versions 3+ */
1022 #define __DRI_IMAGE_ATTRIB_WIDTH        0x2004 /* available in versions 4+ */
1023 #define __DRI_IMAGE_ATTRIB_HEIGHT       0x2005
1024 #define __DRI_IMAGE_ATTRIB_COMPONENTS   0x2006 /* available in versions 5+ */
1025
1026 typedef struct __DRIimageRec          __DRIimage;
1027 typedef struct __DRIimageExtensionRec __DRIimageExtension;
1028 struct __DRIimageExtensionRec {
1029     __DRIextension base;
1030
1031     __DRIimage *(*createImageFromName)(__DRIscreen *screen,
1032                                        int width, int height, int format,
1033                                        int name, int pitch,
1034                                        void *loaderPrivate);
1035
1036     __DRIimage *(*createImageFromRenderbuffer)(__DRIcontext *context,
1037                                                int renderbuffer,
1038                                                void *loaderPrivate);
1039
1040     void (*destroyImage)(__DRIimage *image);
1041
1042     __DRIimage *(*createImage)(__DRIscreen *screen,
1043                                int width, int height, int format,
1044                                unsigned int use,
1045                                void *loaderPrivate);
1046
1047    GLboolean (*queryImage)(__DRIimage *image, int attrib, int *value);
1048
1049    /**
1050     * The new __DRIimage will share the content with the old one, see dup(2).
1051     */
1052    __DRIimage *(*dupImage)(__DRIimage *image, void *loaderPrivate);
1053
1054    /**
1055     * Validate that a __DRIimage can be used a certain way.
1056     *
1057     * \since 2
1058     */
1059    GLboolean (*validateUsage)(__DRIimage *image, unsigned int use);
1060
1061    /**
1062     * Unlike createImageFromName __DRI_IMAGE_FORMAT is not but instead
1063     * __DRI_IMAGE_FOURCC and strides are in bytes not pixels. Stride is
1064     * also per block and not per pixel (for non-RGB, see gallium blocks).
1065     *
1066     * \since 5
1067     */
1068    __DRIimage *(*createImageFromNames)(__DRIscreen *screen,
1069                                        int width, int height, int fourcc,
1070                                        int *names, int num_names,
1071                                        int *strides, int *offsets,
1072                                        void *loaderPrivate);
1073
1074    /**
1075     * Create an image out of a sub-region of a parent image.  This
1076     * entry point lets us create individual __DRIimages for different
1077     * planes in a planar buffer (typically yuv), for example.  While a
1078     * sub-image shares the underlying buffer object with the parent
1079     * image and other sibling sub-images, the life times of parent and
1080     * sub-images are not dependent.  Destroying the parent or a
1081     * sub-image doesn't affect other images.  The underlying buffer
1082     * object is free when no __DRIimage remains that references it.
1083     *
1084     * Sub-images may overlap, but rendering to overlapping sub-images
1085     * is undefined.
1086     *
1087     * \since 5
1088     */
1089     __DRIimage *(*fromPlanar)(__DRIimage *image, int plane,
1090                               void *loaderPrivate);
1091 };
1092
1093
1094 /**
1095  * This extension must be implemented by the loader and passed to the
1096  * driver at screen creation time.  The EGLImage entry points in the
1097  * various client APIs take opaque EGLImage handles and use this
1098  * extension to map them to a __DRIimage.  At version 1, this
1099  * extensions allows mapping EGLImage pointers to __DRIimage pointers,
1100  * but future versions could support other EGLImage-like, opaque types
1101  * with new lookup functions.
1102  */
1103 #define __DRI_IMAGE_LOOKUP "DRI_IMAGE_LOOKUP"
1104 #define __DRI_IMAGE_LOOKUP_VERSION 1
1105
1106 typedef struct __DRIimageLookupExtensionRec __DRIimageLookupExtension;
1107 struct __DRIimageLookupExtensionRec {
1108     __DRIextension base;
1109
1110     __DRIimage *(*lookupEGLImage)(__DRIscreen *screen, void *image,
1111                                   void *loaderPrivate);
1112 };
1113
1114 /**
1115  * This extension allows for common DRI2 options
1116  */
1117 #define __DRI2_CONFIG_QUERY "DRI_CONFIG_QUERY"
1118 #define __DRI2_CONFIG_QUERY_VERSION 1
1119
1120 typedef struct __DRI2configQueryExtensionRec __DRI2configQueryExtension;
1121 struct __DRI2configQueryExtensionRec {
1122    __DRIextension base;
1123
1124    int (*configQueryb)(__DRIscreen *screen, const char *var, GLboolean *val);
1125    int (*configQueryi)(__DRIscreen *screen, const char *var, GLint *val);
1126    int (*configQueryf)(__DRIscreen *screen, const char *var, GLfloat *val);
1127 };
1128
1129 /**
1130  * Robust context driver extension.
1131  *
1132  * Existence of this extension means the driver can accept the
1133  * \c __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag and the
1134  * \c __DRI_CTX_ATTRIB_RESET_STRATEGY attribute in
1135  * \c __DRIdri2ExtensionRec::createContextAttribs.
1136  */
1137 #define __DRI2_ROBUSTNESS "DRI_Robustness"
1138 #define __DRI2_ROBUSTNESS_VERSION 1
1139
1140 typedef struct __DRIrobustnessExtensionRec __DRIrobustnessExtension;
1141 struct __DRIrobustnessExtensionRec {
1142    __DRIextension base;
1143 };
1144
1145 #endif