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 3
 271 struct __DRI2flushExtensionRec {
 272     __DRIextension base;
 273     void (*flush)(__DRIdrawable *drawable);
 274
 275     /**
 276      * Ask the driver to call getBuffers/getBuffersWithFormat before
 277      * it starts rendering again.
 278      *
 279      * \param drawable the drawable to invalidate
 280      *
 281      * \since 3
 282      */
 283     void (*invalidate)(__DRIdrawable *drawable);
 284 };
 285
 286
 287 /**
 288  * Extension that the driver uses to request
 289  * throttle callbacks.
 290  */
 291
 292 #define __DRI2_THROTTLE "DRI2_Throttle"
 293 #define __DRI2_THROTTLE_VERSION 1
 294
 295 enum __DRI2throttleReason {
 296    __DRI2_THROTTLE_SWAPBUFFER,
 297    __DRI2_THROTTLE_COPYSUBBUFFER,
 298    __DRI2_THROTTLE_FLUSHFRONT
 299 };
 300
 301 struct __DRI2throttleExtensionRec {
 302    __DRIextension base;
 303    void (*throttle)(__DRIcontext *ctx,
 304                     __DRIdrawable *drawable,
 305                     enum __DRI2throttleReason reason);
 306 };
 307
 308 /**
 309  * XML document describing the configuration options supported by the
 310  * driver.
 311  */
 312 extern const char __driConfigOptions[];
 313
 314 /*@}*/
 315
 316 /**
 317  * The following extensions describe loader features that the DRI
 318  * driver can make use of.  Some of these are mandatory, such as the
 319  * getDrawableInfo extension for DRI and the DRI Loader extensions for
 320  * DRI2, while others are optional, and if present allow the driver to
 321  * expose certain features.  The loader pass in a NULL terminated
 322  * array of these extensions to the driver in the createNewScreen
 323  * constructor.
 324  */
 325
 326 typedef struct __DRIgetDrawableInfoExtensionRec __DRIgetDrawableInfoExtension;
 327 typedef struct __DRIsystemTimeExtensionRec __DRIsystemTimeExtension;
 328 typedef struct __DRIdamageExtensionRec __DRIdamageExtension;
 329 typedef struct __DRIloaderExtensionRec __DRIloaderExtension;
 330 typedef struct __DRIswrastLoaderExtensionRec __DRIswrastLoaderExtension;
 331
 332
 333 /**
 334  * Callback to getDrawableInfo protocol
 335  */
 336 #define __DRI_GET_DRAWABLE_INFO "DRI_GetDrawableInfo"
 337 #define __DRI_GET_DRAWABLE_INFO_VERSION 1
 338 struct __DRIgetDrawableInfoExtensionRec {
 339     __DRIextension base;
 340
 341     /**
 342      * This function is used to get information about the position, size, and
 343      * clip rects of a drawable.
 344      */
 345     GLboolean (* getDrawableInfo) ( __DRIdrawable *drawable,
 346         unsigned int * index, unsigned int * stamp,
 347         int * x, int * y, int * width, int * height,
 348         int * numClipRects, drm_clip_rect_t ** pClipRects,
 349         int * backX, int * backY,
 350         int * numBackClipRects, drm_clip_rect_t ** pBackClipRects,
 351         void *loaderPrivate);
 352 };
 353
 354 /**
 355  * Callback to get system time for media stream counter extensions.
 356  */
 357 #define __DRI_SYSTEM_TIME "DRI_SystemTime"
 358 #define __DRI_SYSTEM_TIME_VERSION 1
 359 struct __DRIsystemTimeExtensionRec {
 360     __DRIextension base;
 361
 362     /**
 363      * Get the 64-bit unadjusted system time (UST).
 364      */
 365     int (*getUST)(int64_t * ust);
 366
 367     /**
 368      * Get the media stream counter (MSC) rate.
 369      *
 370      * Matching the definition in GLX_OML_sync_control, this function returns
 371      * the rate of the "media stream counter".  In practical terms, this is
 372      * the frame refresh rate of the display.
 373      */
 374     GLboolean (*getMSCRate)(__DRIdrawable *draw,
 375                             int32_t * numerator, int32_t * denominator,
 376                             void *loaderPrivate);
 377 };
 378
 379 /**
 380  * Damage reporting
 381  */
 382 #define __DRI_DAMAGE "DRI_Damage"
 383 #define __DRI_DAMAGE_VERSION 1
 384 struct __DRIdamageExtensionRec {
 385     __DRIextension base;
 386
 387     /**
 388      * Reports areas of the given drawable which have been modified by the
 389      * driver.
 390      *
 391      * \param drawable which the drawing was done to.
 392      * \param rects rectangles affected, with the drawable origin as the
 393      *        origin.
 394      * \param x X offset of the drawable within the screen (used in the
 395      *        front_buffer case)
 396      * \param y Y offset of the drawable within the screen.
 397      * \param front_buffer boolean flag for whether the drawing to the
 398      *        drawable was actually done directly to the front buffer (instead
 399      *        of backing storage, for example)
 400      * \param loaderPrivate the data passed in at createNewDrawable time
 401      */
 402     void (*reportDamage)(__DRIdrawable *draw,
 403                          int x, int y,
 404                          drm_clip_rect_t *rects, int num_rects,
 405                          GLboolean front_buffer,
 406                          void *loaderPrivate);
 407 };
 408
 409 #define __DRI_SWRAST_IMAGE_OP_DRAW      1
 410 #define __DRI_SWRAST_IMAGE_OP_CLEAR     2
 411 #define __DRI_SWRAST_IMAGE_OP_SWAP      3
 412
 413 /**
 414  * SWRast Loader extension.
 415  */
 416 #define __DRI_SWRAST_LOADER "DRI_SWRastLoader"
 417 #define __DRI_SWRAST_LOADER_VERSION 1
 418 struct __DRIswrastLoaderExtensionRec {
 419     __DRIextension base;
 420
 421     /*
 422      * Drawable position and size
 423      */
 424     void (*getDrawableInfo)(__DRIdrawable *drawable,
 425                             int *x, int *y, int *width, int *height,
 426                             void *loaderPrivate);
 427
 428     /**
 429      * Put image to drawable
 430      */
 431     void (*putImage)(__DRIdrawable *drawable, int op,
 432                      int x, int y, int width, int height,
 433                      char *data, void *loaderPrivate);
 434
 435     /**
 436      * Get image from readable
 437      */
 438     void (*getImage)(__DRIdrawable *readable,
 439                      int x, int y, int width, int height,
 440                      char *data, void *loaderPrivate);
 441 };
 442
 443 /**
 444  * Invalidate loader extension.  The presence of this extension
 445  * indicates to the DRI driver that the loader will call invalidate in
 446  * the __DRI2_FLUSH extension, whenever the needs to query for new
 447  * buffers.  This means that the DRI driver can drop the polling in
 448  * glViewport().
 449  *
 450  * The extension doesn't provide any functionality, it's only use to
 451  * indicate to the driver that it can use the new semantics.  A DRI
 452  * driver can use this to switch between the different semantics or
 453  * just refuse to initialize if this extension isn't present.
 454  */
 455 #define __DRI_USE_INVALIDATE "DRI_UseInvalidate"
 456 #define __DRI_USE_INVALIDATE_VERSION 1
 457
 458 typedef struct __DRIuseInvalidateExtensionRec __DRIuseInvalidateExtension;
 459 struct __DRIuseInvalidateExtensionRec {
 460    __DRIextension base;
 461 };
 462
 463 /**
 464  * The remaining extensions describe driver extensions, immediately
 465  * available interfaces provided by the driver.  To start using the
 466  * driver, dlsym() for the __DRI_DRIVER_EXTENSIONS symbol and look for
 467  * the extension you need in the array.
 468  */
 469 #define __DRI_DRIVER_EXTENSIONS "__driDriverExtensions"
 470
 471 /**
 472  * Tokens for __DRIconfig attribs.  A number of attributes defined by
 473  * GLX or EGL standards are not in the table, as they must be provided
 474  * by the loader.  For example, FBConfig ID or visual ID, drawable type.
 475  */
 476
 477 #define __DRI_ATTRIB_BUFFER_SIZE                 1
 478 #define __DRI_ATTRIB_LEVEL                       2
 479 #define __DRI_ATTRIB_RED_SIZE                    3
 480 #define __DRI_ATTRIB_GREEN_SIZE                  4
 481 #define __DRI_ATTRIB_BLUE_SIZE                   5
 482 #define __DRI_ATTRIB_LUMINANCE_SIZE              6
 483 #define __DRI_ATTRIB_ALPHA_SIZE                  7
 484 #define __DRI_ATTRIB_ALPHA_MASK_SIZE             8
 485 #define __DRI_ATTRIB_DEPTH_SIZE                  9
 486 #define __DRI_ATTRIB_STENCIL_SIZE               10
 487 #define __DRI_ATTRIB_ACCUM_RED_SIZE             11
 488 #define __DRI_ATTRIB_ACCUM_GREEN_SIZE           12
 489 #define __DRI_ATTRIB_ACCUM_BLUE_SIZE            13
 490 #define __DRI_ATTRIB_ACCUM_ALPHA_SIZE           14
 491 #define __DRI_ATTRIB_SAMPLE_BUFFERS             15
 492 #define __DRI_ATTRIB_SAMPLES                    16
 493 #define __DRI_ATTRIB_RENDER_TYPE                17
 494 #define __DRI_ATTRIB_CONFIG_CAVEAT              18
 495 #define __DRI_ATTRIB_CONFORMANT                 19
 496 #define __DRI_ATTRIB_DOUBLE_BUFFER              20
 497 #define __DRI_ATTRIB_STEREO                     21
 498 #define __DRI_ATTRIB_AUX_BUFFERS                22
 499 #define __DRI_ATTRIB_TRANSPARENT_TYPE           23
 500 #define __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE    24
 501 #define __DRI_ATTRIB_TRANSPARENT_RED_VALUE      25
 502 #define __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE    26
 503 #define __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE     27
 504 #define __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE    28
 505 #define __DRI_ATTRIB_FLOAT_MODE                 29
 506 #define __DRI_ATTRIB_RED_MASK                   30
 507 #define __DRI_ATTRIB_GREEN_MASK                 31
 508 #define __DRI_ATTRIB_BLUE_MASK                  32
 509 #define __DRI_ATTRIB_ALPHA_MASK                 33
 510 #define __DRI_ATTRIB_MAX_PBUFFER_WIDTH          34
 511 #define __DRI_ATTRIB_MAX_PBUFFER_HEIGHT         35
 512 #define __DRI_ATTRIB_MAX_PBUFFER_PIXELS         36
 513 #define __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH      37
 514 #define __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT     38
 515 #define __DRI_ATTRIB_VISUAL_SELECT_GROUP        39
 516 #define __DRI_ATTRIB_SWAP_METHOD                40
 517 #define __DRI_ATTRIB_MAX_SWAP_INTERVAL          41
 518 #define __DRI_ATTRIB_MIN_SWAP_INTERVAL          42
 519 #define __DRI_ATTRIB_BIND_TO_TEXTURE_RGB        43
 520 #define __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA       44
 521 #define __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE     45
 522 #define __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS    46
 523 #define __DRI_ATTRIB_YINVERTED                  47
 524 #define __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE   48
 525
 526 /* __DRI_ATTRIB_RENDER_TYPE */
 527 #define __DRI_ATTRIB_RGBA_BIT                   0x01
 528 #define __DRI_ATTRIB_COLOR_INDEX_BIT            0x02
 529 #define __DRI_ATTRIB_LUMINANCE_BIT              0x04
 530
 531 /* __DRI_ATTRIB_CONFIG_CAVEAT */
 532 #define __DRI_ATTRIB_SLOW_BIT                   0x01
 533 #define __DRI_ATTRIB_NON_CONFORMANT_CONFIG      0x02
 534
 535 /* __DRI_ATTRIB_TRANSPARENT_TYPE */
 536 #define __DRI_ATTRIB_TRANSPARENT_RGB            0x00
 537 #define __DRI_ATTRIB_TRANSPARENT_INDEX          0x01
 538
 539 /* __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS  */
 540 #define __DRI_ATTRIB_TEXTURE_1D_BIT             0x01
 541 #define __DRI_ATTRIB_TEXTURE_2D_BIT             0x02
 542 #define __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT      0x04
 543
 544 /**
 545  * This extension defines the core DRI functionality.
 546  */
 547 #define __DRI_CORE "DRI_Core"
 548 #define __DRI_CORE_VERSION 1
 549
 550 struct __DRIcoreExtensionRec {
 551     __DRIextension base;
 552
 553     __DRIscreen *(*createNewScreen)(int screen, int fd,
 554                                     unsigned int sarea_handle,
 555                                     const __DRIextension **extensions,
 556                                     const __DRIconfig ***driverConfigs,
 557                                     void *loaderPrivate);
 558
 559     void (*destroyScreen)(__DRIscreen *screen);
 560
 561     const __DRIextension **(*getExtensions)(__DRIscreen *screen);
 562
 563     int (*getConfigAttrib)(const __DRIconfig *config,
 564                            unsigned int attrib,
 565                            unsigned int *value);
 566
 567     int (*indexConfigAttrib)(const __DRIconfig *config, int index,
 568                              unsigned int *attrib, unsigned int *value);
 569
 570     __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
 571                                         const __DRIconfig *config,
 572                                         unsigned int drawable_id,
 573                                         unsigned int head,
 574                                         void *loaderPrivate);
 575
 576     void (*destroyDrawable)(__DRIdrawable *drawable);
 577
 578     void (*swapBuffers)(__DRIdrawable *drawable);
 579
 580     __DRIcontext *(*createNewContext)(__DRIscreen *screen,
 581                                       const __DRIconfig *config,
 582                                       __DRIcontext *shared,
 583                                       void *loaderPrivate);
 584
 585     int (*copyContext)(__DRIcontext *dest,
 586                        __DRIcontext *src,
 587                        unsigned long mask);
 588
 589     void (*destroyContext)(__DRIcontext *context);
 590
 591     int (*bindContext)(__DRIcontext *ctx,
 592                        __DRIdrawable *pdraw,
 593                        __DRIdrawable *pread);
 594
 595     int (*unbindContext)(__DRIcontext *ctx);
 596 };
 597
 598 /**
 599  * Stored version of some component (i.e., server-side DRI module, kernel-side
 600  * DRM, etc.).
 601  *
 602  * \todo
 603  * There are several data structures that explicitly store a major version,
 604  * minor version, and patch level.  These structures should be modified to
 605  * have a \c __DRIversionRec instead.
 606  */
 607 struct __DRIversionRec {
 608     int    major;        /**< Major version number. */
 609     int    minor;        /**< Minor version number. */
 610     int    patch;        /**< Patch-level. */
 611 };
 612
 613 /**
 614  * Framebuffer information record.  Used by libGL to communicate information
 615  * about the framebuffer to the driver's \c __driCreateNewScreen function.
 616  *
 617  * In XFree86, most of this information is derrived from data returned by
 618  * calling \c XF86DRIGetDeviceInfo.
 619  *
 620  * \sa XF86DRIGetDeviceInfo __DRIdisplayRec::createNewScreen
 621  *     __driUtilCreateNewScreen CallCreateNewScreen
 622  *
 623  * \bug This structure could be better named.
 624  */
 625 struct __DRIframebufferRec {
 626     unsigned char *base;    /**< Framebuffer base address in the CPU's
 627                              * address space.  This value is calculated by
 628                              * calling \c drmMap on the framebuffer handle
 629                              * returned by \c XF86DRIGetDeviceInfo (or a
 630                              * similar function).
 631                              */
 632     int size;               /**< Framebuffer size, in bytes. */
 633     int stride;             /**< Number of bytes from one line to the next. */
 634     int width;              /**< Pixel width of the framebuffer. */
 635     int height;             /**< Pixel height of the framebuffer. */
 636     int dev_priv_size;      /**< Size of the driver's dev-priv structure. */
 637     void *dev_priv;         /**< Pointer to the driver's dev-priv structure. */
 638 };
 639
 640
 641 /**
 642  * This extension provides alternative screen, drawable and context
 643  * constructors for legacy DRI functionality.  This is used in
 644  * conjunction with the core extension.
 645  */
 646 #define __DRI_LEGACY "DRI_Legacy"
 647 #define __DRI_LEGACY_VERSION 1
 648
 649 struct __DRIlegacyExtensionRec {
 650     __DRIextension base;
 651
 652     __DRIscreen *(*createNewScreen)(int screen,
 653                                     const __DRIversion *ddx_version,
 654                                     const __DRIversion *dri_version,
 655                                     const __DRIversion *drm_version,
 656                                     const __DRIframebuffer *frame_buffer,
 657                                     void *pSAREA, int fd,
 658                                     const __DRIextension **extensions,
 659                                     const __DRIconfig ***driver_configs,
 660                                     void *loaderPrivate);
 661
 662     __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
 663                                         const __DRIconfig *config,
 664                                         drm_drawable_t hwDrawable,
 665                                         int renderType, const int *attrs,
 666                                         void *loaderPrivate);
 667
 668     __DRIcontext *(*createNewContext)(__DRIscreen *screen,
 669                                       const __DRIconfig *config,
 670                                       int render_type,
 671                                       __DRIcontext *shared,
 672                                       drm_context_t hwContext,
 673                                       void *loaderPrivate);
 674 };
 675
 676 /**
 677  * This extension provides alternative screen, drawable and context
 678  * constructors for swrast DRI functionality.  This is used in
 679  * conjunction with the core extension.
 680  */
 681 #define __DRI_SWRAST "DRI_SWRast"
 682 #define __DRI_SWRAST_VERSION 3
 683
 684 struct __DRIswrastExtensionRec {
 685     __DRIextension base;
 686
 687     __DRIscreen *(*createNewScreen)(int screen,
 688                                     const __DRIextension **extensions,
 689                                     const __DRIconfig ***driver_configs,
 690                                     void *loaderPrivate);
 691
 692     __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
 693                                         const __DRIconfig *config,
 694                                         void *loaderPrivate);
 695
 696    /* Since version 2 */
 697    __DRIcontext *(*createNewContextForAPI)(__DRIscreen *screen,
 698                                            int api,
 699                                            const __DRIconfig *config,
 700                                            __DRIcontext *shared,
 701                                            void *data);
 702
 703    /**
 704     * Create a context for a particular API with a set of attributes
 705     *
 706     * \since version 3
 707     *
 708     * \sa __DRIdri2ExtensionRec::createContextAttribs
 709     */
 710    __DRIcontext *(*createContextAttribs)(__DRIscreen *screen,
 711                                          int api,
 712                                          const __DRIconfig *config,
 713                                          __DRIcontext *shared,
 714                                          unsigned num_attribs,
 715                                          const uint32_t *attribs,
 716                                          unsigned *error,
 717                                          void *loaderPrivate);
 718 };
 719
 720 /**
 721  * DRI2 Loader extension.
 722  */
 723 #define __DRI_BUFFER_FRONT_LEFT         0
 724 #define __DRI_BUFFER_BACK_LEFT          1
 725 #define __DRI_BUFFER_FRONT_RIGHT        2
 726 #define __DRI_BUFFER_BACK_RIGHT         3
 727 #define __DRI_BUFFER_DEPTH              4
 728 #define __DRI_BUFFER_STENCIL            5
 729 #define __DRI_BUFFER_ACCUM              6
 730 #define __DRI_BUFFER_FAKE_FRONT_LEFT    7
 731 #define __DRI_BUFFER_FAKE_FRONT_RIGHT   8
 732 #define __DRI_BUFFER_DEPTH_STENCIL      9  /**< Only available with DRI2 1.1 */
 733 #define __DRI_BUFFER_HIZ                10
 734
 735 /* Inofficial and for internal use. Increase when adding a new buffer token. */
 736 #define __DRI_BUFFER_COUNT              11
 737
 738 struct __DRIbufferRec {
 739     unsigned int attachment;
 740     unsigned int name;
 741     unsigned int pitch;
 742     unsigned int cpp;
 743     unsigned int flags;
 744 };
 745
 746 #define __DRI_DRI2_LOADER "DRI_DRI2Loader"
 747 #define __DRI_DRI2_LOADER_VERSION 3
 748 struct __DRIdri2LoaderExtensionRec {
 749     __DRIextension base;
 750
 751     __DRIbuffer *(*getBuffers)(__DRIdrawable *driDrawable,
 752                                int *width, int *height,
 753                                unsigned int *attachments, int count,
 754                                int *out_count, void *loaderPrivate);
 755
 756     /**
 757      * Flush pending front-buffer rendering
 758      *
 759      * Any rendering that has been performed to the
 760      * \c __DRI_BUFFER_FAKE_FRONT_LEFT will be flushed to the
 761      * \c __DRI_BUFFER_FRONT_LEFT.
 762      *
 763      * \param driDrawable    Drawable whose front-buffer is to be flushed
 764      * \param loaderPrivate  Loader's private data that was previously passed
 765      *                       into __DRIdri2ExtensionRec::createNewDrawable
 766      */
 767     void (*flushFrontBuffer)(__DRIdrawable *driDrawable, void *loaderPrivate);
 768
 769
 770     /**
 771      * Get list of buffers from the server
 772      *
 773      * Gets a list of buffer for the specified set of attachments.  Unlike
 774      * \c ::getBuffers, this function takes a list of attachments paired with
 775      * opaque \c unsigned \c int value describing the format of the buffer.
 776      * It is the responsibility of the caller to know what the service that
 777      * allocates the buffers will expect to receive for the format.
 778      *
 779      * \param driDrawable    Drawable whose buffers are being queried.
 780      * \param width          Output where the width of the buffers is stored.
 781      * \param height         Output where the height of the buffers is stored.
 782      * \param attachments    List of pairs of attachment ID and opaque format
 783      *                       requested for the drawable.
 784      * \param count          Number of attachment / format pairs stored in
 785      *                       \c attachments.
 786      * \param loaderPrivate  Loader's private data that was previously passed
 787      *                       into __DRIdri2ExtensionRec::createNewDrawable.
 788      */
 789     __DRIbuffer *(*getBuffersWithFormat)(__DRIdrawable *driDrawable,
 790                                          int *width, int *height,
 791                                          unsigned int *attachments, int count,
 792                                          int *out_count, void *loaderPrivate);
 793 };
 794
 795 /**
 796  * This extension provides alternative screen, drawable and context
 797  * constructors for DRI2.
 798  */
 799 #define __DRI_DRI2 "DRI_DRI2"
 800 #define __DRI_DRI2_VERSION 3
 801
 802 #define __DRI_API_OPENGL        0       /**< OpenGL compatibility profile */
 803 #define __DRI_API_GLES          1
 804 #define __DRI_API_GLES2         2
 805 #define __DRI_API_OPENGL_CORE   3       /**< OpenGL 3.2+ core profile */
 806
 807 #define __DRI_CTX_ATTRIB_MAJOR_VERSION          0
 808 #define __DRI_CTX_ATTRIB_MINOR_VERSION          1
 809 #define __DRI_CTX_ATTRIB_FLAGS                  2
 810
 811 #define __DRI_CTX_FLAG_DEBUG                    0x00000001
 812 #define __DRI_CTX_FLAG_FORWARD_COMPATIBLE       0x00000002
 813
 814 /**
 815  * \name Reasons that __DRIdri2Extension::createContextAttribs might fail
 816  */
 817 /*@{*/
 818 /** Success! */
 819 #define __DRI_CTX_ERROR_SUCCESS                 0
 820
 821 /** Memory allocation failure */
 822 #define __DRI_CTX_ERROR_NO_MEMORY               1
 823
 824 /** Client requested an API (e.g., OpenGL ES 2.0) that the driver can't do. */
 825 #define __DRI_CTX_ERROR_BAD_API                 2
 826
 827 /** Client requested an API version that the driver can't do. */
 828 #define __DRI_CTX_ERROR_BAD_VERSION             3
 829
 830 /** Client requested a flag or combination of flags the driver can't do. */
 831 #define __DRI_CTX_ERROR_BAD_FLAG                4
 832
 833 /** Client requested an attribute the driver doesn't understand. */
 834 #define __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE       5
 835
 836 /** Client requested a flag the driver doesn't understand. */
 837 #define __DRI_CTX_ERROR_UNKNOWN_FLAG            6
 838 /*@}*/
 839
 840 struct __DRIdri2ExtensionRec {
 841     __DRIextension base;
 842
 843     __DRIscreen *(*createNewScreen)(int screen, int fd,
 844                                     const __DRIextension **extensions,
 845                                     const __DRIconfig ***driver_configs,
 846                                     void *loaderPrivate);
 847
 848     __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
 849                                         const __DRIconfig *config,
 850                                         void *loaderPrivate);
 851
 852     __DRIcontext *(*createNewContext)(__DRIscreen *screen,
 853                                       const __DRIconfig *config,
 854                                       __DRIcontext *shared,
 855                                       void *loaderPrivate);
 856
 857    /* Since version 2 */
 858    unsigned int (*getAPIMask)(__DRIscreen *screen);
 859
 860    __DRIcontext *(*createNewContextForAPI)(__DRIscreen *screen,
 861                                            int api,
 862                                            const __DRIconfig *config,
 863                                            __DRIcontext *shared,
 864                                            void *data);
 865
 866    __DRIbuffer *(*allocateBuffer)(__DRIscreen *screen,
 867                                   unsigned int attachment,
 868                                   unsigned int format,
 869                                   int width,
 870                                   int height);
 871    void (*releaseBuffer)(__DRIscreen *screen,
 872                          __DRIbuffer *buffer);
 873
 874    /**
 875     * Create a context for a particular API with a set of attributes
 876     *
 877     * \since version 3
 878     *
 879     * \sa __DRIswrastExtensionRec::createContextAttribs
 880     */
 881    __DRIcontext *(*createContextAttribs)(__DRIscreen *screen,
 882                                          int api,
 883                                          const __DRIconfig *config,
 884                                          __DRIcontext *shared,
 885                                          unsigned num_attribs,
 886                                          const uint32_t *attribs,
 887                                          unsigned *error,
 888                                          void *loaderPrivate);
 889 };
 890
 891
 892 /**
 893  * This extension provides functionality to enable various EGLImage
 894  * extensions.
 895  */
 896 #define __DRI_IMAGE "DRI_IMAGE"
 897 #define __DRI_IMAGE_VERSION 4
 898
 899 /**
 900  * These formats correspond to the similarly named MESA_FORMAT_*
 901  * tokens, except in the native endian of the CPU.  For example, on
 902  * little endian __DRI_IMAGE_FORMAT_XRGB8888 corresponds to
 903  * MESA_FORMAT_XRGB8888, but MESA_FORMAT_XRGB8888_REV on big endian.
 904  */
 905 #define __DRI_IMAGE_FORMAT_RGB565       0x1001
 906 #define __DRI_IMAGE_FORMAT_XRGB8888     0x1002
 907 #define __DRI_IMAGE_FORMAT_ARGB8888     0x1003
 908 #define __DRI_IMAGE_FORMAT_ABGR8888     0x1004
 909 #define __DRI_IMAGE_FORMAT_XBGR8888     0x1005
 910
 911 #define __DRI_IMAGE_USE_SHARE           0x0001
 912 #define __DRI_IMAGE_USE_SCANOUT         0x0002
 913 #define __DRI_IMAGE_USE_CURSOR          0x0004
 914 #define __DRI_IMAGE_USE_WRITE           0x0008
 915
 916 /**
 917  * queryImage attributes
 918  */
 919
 920 #define __DRI_IMAGE_ATTRIB_STRIDE       0x2000
 921 #define __DRI_IMAGE_ATTRIB_HANDLE       0x2001
 922 #define __DRI_IMAGE_ATTRIB_NAME         0x2002
 923 #define __DRI_IMAGE_ATTRIB_FORMAT       0x2003 /* available in versions 3+ */
 924
 925 typedef struct __DRIimageRec          __DRIimage;
 926 typedef struct __DRIimageExtensionRec __DRIimageExtension;
 927 struct __DRIimageExtensionRec {
 928     __DRIextension base;
 929
 930     __DRIimage *(*createImageFromName)(__DRIscreen *screen,
 931                                        int width, int height, int format,
 932                                        int name, int pitch,
 933                                        void *loaderPrivate);
 934
 935     __DRIimage *(*createImageFromRenderbuffer)(__DRIcontext *context,
 936                                                int renderbuffer,
 937                                                void *loaderPrivate);
 938
 939     void (*destroyImage)(__DRIimage *image);
 940
 941     __DRIimage *(*createImage)(__DRIscreen *screen,
 942                                int width, int height, int format,
 943                                unsigned int use,
 944                                void *loaderPrivate);
 945
 946    GLboolean (*queryImage)(__DRIimage *image, int attrib, int *value);
 947
 948    /**
 949     * The new __DRIimage will share the content with the old one, see dup(2).
 950     */
 951    __DRIimage *(*dupImage)(__DRIimage *image, void *loaderPrivate);
 952
 953    /**
 954     * Validate that a __DRIimage can be used a certain way.
 955     *
 956     * \since 2
 957     */
 958    GLboolean (*validateUsage)(__DRIimage *image, unsigned int use);
 959
 960    /**
 961     * Write data into image.
 962     *
 963     * \since 4
 964     */
 965    int (*write)(__DRIimage *image, const void *buf, size_t count);
 966 };
 967
 968
 969 /**
 970  * This extension must be implemented by the loader and passed to the
 971  * driver at screen creation time.  The EGLImage entry points in the
 972  * various client APIs take opaque EGLImage handles and use this
 973  * extension to map them to a __DRIimage.  At version 1, this
 974  * extensions allows mapping EGLImage pointers to __DRIimage pointers,
 975  * but future versions could support other EGLImage-like, opaque types
 976  * with new lookup functions.
 977  */
 978 #define __DRI_IMAGE_LOOKUP "DRI_IMAGE_LOOKUP"
 979 #define __DRI_IMAGE_LOOKUP_VERSION 1
 980
 981 typedef struct __DRIimageLookupExtensionRec __DRIimageLookupExtension;
 982 struct __DRIimageLookupExtensionRec {
 983     __DRIextension base;
 984
 985     __DRIimage *(*lookupEGLImage)(__DRIscreen *screen, void *image,
 986                                   void *loaderPrivate);
 987 };
 988
 989 /**
 990  * This extension allows for common DRI2 options
 991  */
 992 #define __DRI2_CONFIG_QUERY "DRI_CONFIG_QUERY"
 993 #define __DRI2_CONFIG_QUERY_VERSION 1
 994
 995 typedef struct __DRI2configQueryExtensionRec __DRI2configQueryExtension;
 996 struct __DRI2configQueryExtensionRec {
 997    __DRIextension base;
 998
 999    int (*configQueryb)(__DRIscreen *screen, const char *var, GLboolean *val);
1000    int (*configQueryi)(__DRIscreen *screen, const char *var, GLint *val);
1001    int (*configQueryf)(__DRIscreen *screen, const char *var, GLfloat *val);
1002 };
1003 #endif