2 * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
3 * Copyright 2007-2008 Red Hat, Inc.
4 * (C) Copyright IBM Corporation 2004
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
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12 * the Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice (including the next
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24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * \file dri_interface.h
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.
35 * \author Kevin E. Martin <kevin@precisioninsight.com>
36 * \author Ian Romanick <idr@us.ibm.com>
37 * \author Kristian Høgsberg <krh@redhat.com>
40 #ifndef DRI_INTERFACE_H
41 #define DRI_INTERFACE_H
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
50 #ifndef __NOT_HAVE_DRM_H
53 typedef unsigned int drm_context_t
;
54 typedef unsigned int drm_drawable_t
;
55 typedef struct drm_clip_rect drm_clip_rect_t
;
59 * \name DRI interface structures
61 * The following structures define the interface between the GLX client
62 * side library and the DRI (direct rendering infrastructure).
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
;
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
;
93 * Extension struct. Drivers 'inherit' from this struct by embedding
94 * it as the first element in the extension struct.
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.
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
111 struct __DRIextensionRec
{
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.
125 * Used by drivers to indicate support for setting the read drawable.
127 #define __DRI_READ_DRAWABLE "DRI_ReadDrawable"
128 #define __DRI_READ_DRAWABLE_VERSION 1
131 * Used by drivers that implement the GLX_MESA_copy_sub_buffer extension.
133 #define __DRI_COPY_SUB_BUFFER "DRI_CopySubBuffer"
134 #define __DRI_COPY_SUB_BUFFER_VERSION 1
135 struct __DRIcopySubBufferExtensionRec
{
137 void (*copySubBuffer
)(__DRIdrawable
*drawable
, int x
, int y
, int w
, int h
);
141 * Used by drivers that implement the GLX_SGI_swap_control or
142 * GLX_MESA_swap_control extension.
144 #define __DRI_SWAP_CONTROL "DRI_SwapControl"
145 #define __DRI_SWAP_CONTROL_VERSION 1
146 struct __DRIswapControlExtensionRec
{
148 void (*setSwapInterval
)(__DRIdrawable
*drawable
, unsigned int inteval
);
149 unsigned int (*getSwapInterval
)(__DRIdrawable
*drawable
);
153 * Used by drivers that implement the GLX_MESA_swap_frame_usage extension.
155 #define __DRI_FRAME_TRACKING "DRI_FrameTracking"
156 #define __DRI_FRAME_TRACKING_VERSION 1
157 struct __DRIframeTrackingExtensionRec
{
161 * Enable or disable frame usage tracking.
163 * \since Internal API version 20030317.
165 int (*frameTracking
)(__DRIdrawable
*drawable
, GLboolean enable
);
168 * Retrieve frame usage information.
170 * \since Internal API version 20030317.
172 int (*queryFrameTracking
)(__DRIdrawable
*drawable
,
173 int64_t * sbc
, int64_t * missedFrames
,
174 float * lastMissedUsage
, float * usage
);
179 * Used by drivers that implement the GLX_SGI_video_sync extension.
181 #define __DRI_MEDIA_STREAM_COUNTER "DRI_MediaStreamCounter"
182 #define __DRI_MEDIA_STREAM_COUNTER_VERSION 1
183 struct __DRImediaStreamCounterExtensionRec
{
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
192 int (*waitForMSC
)(__DRIdrawable
*drawable
,
193 int64_t target_msc
, int64_t divisor
, int64_t remainder
,
194 int64_t * msc
, int64_t * sbc
);
197 * Get the number of vertical refreshes since some point in time before
198 * this function was first called (i.e., system start up).
200 int (*getDrawableMSC
)(__DRIscreen
*screen
, __DRIdrawable
*drawable
,
205 #define __DRI_TEX_OFFSET "DRI_TexOffset"
206 #define __DRI_TEX_OFFSET_VERSION 1
207 struct __DRItexOffsetExtensionRec
{
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.
215 * For GLX_EXT_texture_from_pixmap with AIGLX.
217 void (*setTexOffset
)(__DRIcontext
*pDRICtx
, GLint texname
,
218 unsigned long long offset
, GLint depth
, GLuint pitch
);
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
229 #define __DRI_TEX_BUFFER "DRI_TexBuffer"
230 #define __DRI_TEX_BUFFER_VERSION 2
231 struct __DRItexBufferExtensionRec
{
235 * Method to override base texture image with the contents of a
238 * For GLX_EXT_texture_from_pixmap with AIGLX. Deprecated in favor of
239 * setTexBuffer2 in version 2 of this interface
241 void (*setTexBuffer
)(__DRIcontext
*pDRICtx
,
243 __DRIdrawable
*pDraw
);
246 * Method to override base texture image with the contents of a
247 * __DRIdrawable, including the required texture format attribute.
249 * For GLX_EXT_texture_from_pixmap with AIGLX.
251 void (*setTexBuffer2
)(__DRIcontext
*pDRICtx
,
254 __DRIdrawable
*pDraw
);
256 * Method to release texture buffer in case some special platform
259 * For GLX_EXT_texture_from_pixmap with AIGLX.
261 void (*releaseTexBuffer
)(__DRIcontext
*pDRICtx
,
263 __DRIdrawable
*pDraw
);
267 * Used by drivers that implement DRI2
269 #define __DRI2_FLUSH "DRI2_Flush"
270 #define __DRI2_FLUSH_VERSION 4
272 #define __DRI2_FLUSH_DRAWABLE (1 << 0) /* the drawable should be flushed. */
273 #define __DRI2_FLUSH_CONTEXT (1 << 1) /* glFlush should be called */
275 enum __DRI2throttleReason
{
276 __DRI2_THROTTLE_SWAPBUFFER
,
277 __DRI2_THROTTLE_COPYSUBBUFFER
,
278 __DRI2_THROTTLE_FLUSHFRONT
281 struct __DRI2flushExtensionRec
{
283 void (*flush
)(__DRIdrawable
*drawable
);
286 * Ask the driver to call getBuffers/getBuffersWithFormat before
287 * it starts rendering again.
289 * \param drawable the drawable to invalidate
293 void (*invalidate
)(__DRIdrawable
*drawable
);
296 * This function reduces the number of flushes in the driver by combining
297 * several operations into one call.
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
311 void (*flush_with_flags
)(__DRIcontext
*ctx
,
312 __DRIdrawable
*drawable
,
314 enum __DRI2throttleReason throttle_reason
);
319 * Extension that the driver uses to request
320 * throttle callbacks.
323 #define __DRI2_THROTTLE "DRI2_Throttle"
324 #define __DRI2_THROTTLE_VERSION 1
326 struct __DRI2throttleExtensionRec
{
328 void (*throttle
)(__DRIcontext
*ctx
,
329 __DRIdrawable
*drawable
,
330 enum __DRI2throttleReason reason
);
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
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
;
353 * Callback to getDrawableInfo protocol
355 #define __DRI_GET_DRAWABLE_INFO "DRI_GetDrawableInfo"
356 #define __DRI_GET_DRAWABLE_INFO_VERSION 1
357 struct __DRIgetDrawableInfoExtensionRec
{
361 * This function is used to get information about the position, size, and
362 * clip rects of a drawable.
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
);
374 * Callback to get system time for media stream counter extensions.
376 #define __DRI_SYSTEM_TIME "DRI_SystemTime"
377 #define __DRI_SYSTEM_TIME_VERSION 1
378 struct __DRIsystemTimeExtensionRec
{
382 * Get the 64-bit unadjusted system time (UST).
384 int (*getUST
)(int64_t * ust
);
387 * Get the media stream counter (MSC) rate.
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.
393 GLboolean (*getMSCRate
)(__DRIdrawable
*draw
,
394 int32_t * numerator
, int32_t * denominator
,
395 void *loaderPrivate
);
401 #define __DRI_DAMAGE "DRI_Damage"
402 #define __DRI_DAMAGE_VERSION 1
403 struct __DRIdamageExtensionRec
{
407 * Reports areas of the given drawable which have been modified by the
410 * \param drawable which the drawing was done to.
411 * \param rects rectangles affected, with the drawable origin as the
413 * \param x X offset of the drawable within the screen (used in the
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
421 void (*reportDamage
)(__DRIdrawable
*draw
,
423 drm_clip_rect_t
*rects
, int num_rects
,
424 GLboolean front_buffer
,
425 void *loaderPrivate
);
428 #define __DRI_SWRAST_IMAGE_OP_DRAW 1
429 #define __DRI_SWRAST_IMAGE_OP_CLEAR 2
430 #define __DRI_SWRAST_IMAGE_OP_SWAP 3
433 * SWRast Loader extension.
435 #define __DRI_SWRAST_LOADER "DRI_SWRastLoader"
436 #define __DRI_SWRAST_LOADER_VERSION 1
437 struct __DRIswrastLoaderExtensionRec
{
441 * Drawable position and size
443 void (*getDrawableInfo
)(__DRIdrawable
*drawable
,
444 int *x
, int *y
, int *width
, int *height
,
445 void *loaderPrivate
);
448 * Put image to drawable
450 void (*putImage
)(__DRIdrawable
*drawable
, int op
,
451 int x
, int y
, int width
, int height
,
452 char *data
, void *loaderPrivate
);
455 * Get image from readable
457 void (*getImage
)(__DRIdrawable
*readable
,
458 int x
, int y
, int width
, int height
,
459 char *data
, void *loaderPrivate
);
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
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.
474 #define __DRI_USE_INVALIDATE "DRI_UseInvalidate"
475 #define __DRI_USE_INVALIDATE_VERSION 1
477 typedef struct __DRIuseInvalidateExtensionRec __DRIuseInvalidateExtension
;
478 struct __DRIuseInvalidateExtensionRec
{
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.
488 #define __DRI_DRIVER_EXTENSIONS "__driDriverExtensions"
491 * This symbol replaces the __DRI_DRIVER_EXTENSIONS symbol, and will be
492 * suffixed by "_drivername", allowing multiple drivers to be built into one
493 * library, and also giving the driver the chance to return a variable driver
494 * extensions struct depending on the driver name being loaded or any other
497 * The function prototype is:
499 * const __DRIextension **__driDriverGetExtensions_drivername(void);
501 #define __DRI_DRIVER_GET_EXTENSIONS "__driDriverGetExtensions"
504 * Tokens for __DRIconfig attribs. A number of attributes defined by
505 * GLX or EGL standards are not in the table, as they must be provided
506 * by the loader. For example, FBConfig ID or visual ID, drawable type.
509 #define __DRI_ATTRIB_BUFFER_SIZE 1
510 #define __DRI_ATTRIB_LEVEL 2
511 #define __DRI_ATTRIB_RED_SIZE 3
512 #define __DRI_ATTRIB_GREEN_SIZE 4
513 #define __DRI_ATTRIB_BLUE_SIZE 5
514 #define __DRI_ATTRIB_LUMINANCE_SIZE 6
515 #define __DRI_ATTRIB_ALPHA_SIZE 7
516 #define __DRI_ATTRIB_ALPHA_MASK_SIZE 8
517 #define __DRI_ATTRIB_DEPTH_SIZE 9
518 #define __DRI_ATTRIB_STENCIL_SIZE 10
519 #define __DRI_ATTRIB_ACCUM_RED_SIZE 11
520 #define __DRI_ATTRIB_ACCUM_GREEN_SIZE 12
521 #define __DRI_ATTRIB_ACCUM_BLUE_SIZE 13
522 #define __DRI_ATTRIB_ACCUM_ALPHA_SIZE 14
523 #define __DRI_ATTRIB_SAMPLE_BUFFERS 15
524 #define __DRI_ATTRIB_SAMPLES 16
525 #define __DRI_ATTRIB_RENDER_TYPE 17
526 #define __DRI_ATTRIB_CONFIG_CAVEAT 18
527 #define __DRI_ATTRIB_CONFORMANT 19
528 #define __DRI_ATTRIB_DOUBLE_BUFFER 20
529 #define __DRI_ATTRIB_STEREO 21
530 #define __DRI_ATTRIB_AUX_BUFFERS 22
531 #define __DRI_ATTRIB_TRANSPARENT_TYPE 23
532 #define __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE 24
533 #define __DRI_ATTRIB_TRANSPARENT_RED_VALUE 25
534 #define __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE 26
535 #define __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE 27
536 #define __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE 28
537 #define __DRI_ATTRIB_FLOAT_MODE 29
538 #define __DRI_ATTRIB_RED_MASK 30
539 #define __DRI_ATTRIB_GREEN_MASK 31
540 #define __DRI_ATTRIB_BLUE_MASK 32
541 #define __DRI_ATTRIB_ALPHA_MASK 33
542 #define __DRI_ATTRIB_MAX_PBUFFER_WIDTH 34
543 #define __DRI_ATTRIB_MAX_PBUFFER_HEIGHT 35
544 #define __DRI_ATTRIB_MAX_PBUFFER_PIXELS 36
545 #define __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH 37
546 #define __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT 38
547 #define __DRI_ATTRIB_VISUAL_SELECT_GROUP 39
548 #define __DRI_ATTRIB_SWAP_METHOD 40
549 #define __DRI_ATTRIB_MAX_SWAP_INTERVAL 41
550 #define __DRI_ATTRIB_MIN_SWAP_INTERVAL 42
551 #define __DRI_ATTRIB_BIND_TO_TEXTURE_RGB 43
552 #define __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA 44
553 #define __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE 45
554 #define __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS 46
555 #define __DRI_ATTRIB_YINVERTED 47
556 #define __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE 48
558 /* __DRI_ATTRIB_RENDER_TYPE */
559 #define __DRI_ATTRIB_RGBA_BIT 0x01
560 #define __DRI_ATTRIB_COLOR_INDEX_BIT 0x02
561 #define __DRI_ATTRIB_LUMINANCE_BIT 0x04
562 #define __DRI_ATTRIB_FLOAT_BIT 0x08
563 #define __DRI_ATTRIB_UNSIGNED_FLOAT_BIT 0x10
565 /* __DRI_ATTRIB_CONFIG_CAVEAT */
566 #define __DRI_ATTRIB_SLOW_BIT 0x01
567 #define __DRI_ATTRIB_NON_CONFORMANT_CONFIG 0x02
569 /* __DRI_ATTRIB_TRANSPARENT_TYPE */
570 #define __DRI_ATTRIB_TRANSPARENT_RGB 0x00
571 #define __DRI_ATTRIB_TRANSPARENT_INDEX 0x01
573 /* __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS */
574 #define __DRI_ATTRIB_TEXTURE_1D_BIT 0x01
575 #define __DRI_ATTRIB_TEXTURE_2D_BIT 0x02
576 #define __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT 0x04
579 * This extension defines the core DRI functionality.
581 #define __DRI_CORE "DRI_Core"
582 #define __DRI_CORE_VERSION 1
584 struct __DRIcoreExtensionRec
{
587 __DRIscreen
*(*createNewScreen
)(int screen
, int fd
,
588 unsigned int sarea_handle
,
589 const __DRIextension
**extensions
,
590 const __DRIconfig
***driverConfigs
,
591 void *loaderPrivate
);
593 void (*destroyScreen
)(__DRIscreen
*screen
);
595 const __DRIextension
**(*getExtensions
)(__DRIscreen
*screen
);
597 int (*getConfigAttrib
)(const __DRIconfig
*config
,
599 unsigned int *value
);
601 int (*indexConfigAttrib
)(const __DRIconfig
*config
, int index
,
602 unsigned int *attrib
, unsigned int *value
);
604 __DRIdrawable
*(*createNewDrawable
)(__DRIscreen
*screen
,
605 const __DRIconfig
*config
,
606 unsigned int drawable_id
,
608 void *loaderPrivate
);
610 void (*destroyDrawable
)(__DRIdrawable
*drawable
);
612 void (*swapBuffers
)(__DRIdrawable
*drawable
);
614 __DRIcontext
*(*createNewContext
)(__DRIscreen
*screen
,
615 const __DRIconfig
*config
,
616 __DRIcontext
*shared
,
617 void *loaderPrivate
);
619 int (*copyContext
)(__DRIcontext
*dest
,
623 void (*destroyContext
)(__DRIcontext
*context
);
625 int (*bindContext
)(__DRIcontext
*ctx
,
626 __DRIdrawable
*pdraw
,
627 __DRIdrawable
*pread
);
629 int (*unbindContext
)(__DRIcontext
*ctx
);
633 * Stored version of some component (i.e., server-side DRI module, kernel-side
637 * There are several data structures that explicitly store a major version,
638 * minor version, and patch level. These structures should be modified to
639 * have a \c __DRIversionRec instead.
641 struct __DRIversionRec
{
642 int major
; /**< Major version number. */
643 int minor
; /**< Minor version number. */
644 int patch
; /**< Patch-level. */
648 * Framebuffer information record. Used by libGL to communicate information
649 * about the framebuffer to the driver's \c __driCreateNewScreen function.
651 * In XFree86, most of this information is derrived from data returned by
652 * calling \c XF86DRIGetDeviceInfo.
654 * \sa XF86DRIGetDeviceInfo __DRIdisplayRec::createNewScreen
655 * __driUtilCreateNewScreen CallCreateNewScreen
657 * \bug This structure could be better named.
659 struct __DRIframebufferRec
{
660 unsigned char *base
; /**< Framebuffer base address in the CPU's
661 * address space. This value is calculated by
662 * calling \c drmMap on the framebuffer handle
663 * returned by \c XF86DRIGetDeviceInfo (or a
666 int size
; /**< Framebuffer size, in bytes. */
667 int stride
; /**< Number of bytes from one line to the next. */
668 int width
; /**< Pixel width of the framebuffer. */
669 int height
; /**< Pixel height of the framebuffer. */
670 int dev_priv_size
; /**< Size of the driver's dev-priv structure. */
671 void *dev_priv
; /**< Pointer to the driver's dev-priv structure. */
676 * This extension provides alternative screen, drawable and context
677 * constructors for legacy DRI functionality. This is used in
678 * conjunction with the core extension.
680 #define __DRI_LEGACY "DRI_Legacy"
681 #define __DRI_LEGACY_VERSION 1
683 struct __DRIlegacyExtensionRec
{
686 __DRIscreen
*(*createNewScreen
)(int screen
,
687 const __DRIversion
*ddx_version
,
688 const __DRIversion
*dri_version
,
689 const __DRIversion
*drm_version
,
690 const __DRIframebuffer
*frame_buffer
,
691 void *pSAREA
, int fd
,
692 const __DRIextension
**extensions
,
693 const __DRIconfig
***driver_configs
,
694 void *loaderPrivate
);
696 __DRIdrawable
*(*createNewDrawable
)(__DRIscreen
*screen
,
697 const __DRIconfig
*config
,
698 drm_drawable_t hwDrawable
,
699 int renderType
, const int *attrs
,
700 void *loaderPrivate
);
702 __DRIcontext
*(*createNewContext
)(__DRIscreen
*screen
,
703 const __DRIconfig
*config
,
705 __DRIcontext
*shared
,
706 drm_context_t hwContext
,
707 void *loaderPrivate
);
711 * This extension provides alternative screen, drawable and context
712 * constructors for swrast DRI functionality. This is used in
713 * conjunction with the core extension.
715 #define __DRI_SWRAST "DRI_SWRast"
716 #define __DRI_SWRAST_VERSION 4
718 struct __DRIswrastExtensionRec
{
721 __DRIscreen
*(*createNewScreen
)(int screen
,
722 const __DRIextension
**extensions
,
723 const __DRIconfig
***driver_configs
,
724 void *loaderPrivate
);
726 __DRIdrawable
*(*createNewDrawable
)(__DRIscreen
*screen
,
727 const __DRIconfig
*config
,
728 void *loaderPrivate
);
730 /* Since version 2 */
731 __DRIcontext
*(*createNewContextForAPI
)(__DRIscreen
*screen
,
733 const __DRIconfig
*config
,
734 __DRIcontext
*shared
,
738 * Create a context for a particular API with a set of attributes
742 * \sa __DRIdri2ExtensionRec::createContextAttribs
744 __DRIcontext
*(*createContextAttribs
)(__DRIscreen
*screen
,
746 const __DRIconfig
*config
,
747 __DRIcontext
*shared
,
748 unsigned num_attribs
,
749 const uint32_t *attribs
,
751 void *loaderPrivate
);
754 * createNewScreen() with the driver extensions passed in.
758 __DRIscreen
*(*createNewScreen2
)(int screen
,
759 const __DRIextension
**loader_extensions
,
760 const __DRIextension
**driver_extensions
,
761 const __DRIconfig
***driver_configs
,
762 void *loaderPrivate
);
767 * DRI2 Loader extension.
769 #define __DRI_BUFFER_FRONT_LEFT 0
770 #define __DRI_BUFFER_BACK_LEFT 1
771 #define __DRI_BUFFER_FRONT_RIGHT 2
772 #define __DRI_BUFFER_BACK_RIGHT 3
773 #define __DRI_BUFFER_DEPTH 4
774 #define __DRI_BUFFER_STENCIL 5
775 #define __DRI_BUFFER_ACCUM 6
776 #define __DRI_BUFFER_FAKE_FRONT_LEFT 7
777 #define __DRI_BUFFER_FAKE_FRONT_RIGHT 8
778 #define __DRI_BUFFER_DEPTH_STENCIL 9 /**< Only available with DRI2 1.1 */
779 #define __DRI_BUFFER_HIZ 10
781 /* Inofficial and for internal use. Increase when adding a new buffer token. */
782 #define __DRI_BUFFER_COUNT 11
784 struct __DRIbufferRec
{
785 unsigned int attachment
;
792 #define __DRI_DRI2_LOADER "DRI_DRI2Loader"
793 #define __DRI_DRI2_LOADER_VERSION 3
794 struct __DRIdri2LoaderExtensionRec
{
797 __DRIbuffer
*(*getBuffers
)(__DRIdrawable
*driDrawable
,
798 int *width
, int *height
,
799 unsigned int *attachments
, int count
,
800 int *out_count
, void *loaderPrivate
);
803 * Flush pending front-buffer rendering
805 * Any rendering that has been performed to the
806 * \c __DRI_BUFFER_FAKE_FRONT_LEFT will be flushed to the
807 * \c __DRI_BUFFER_FRONT_LEFT.
809 * \param driDrawable Drawable whose front-buffer is to be flushed
810 * \param loaderPrivate Loader's private data that was previously passed
811 * into __DRIdri2ExtensionRec::createNewDrawable
813 void (*flushFrontBuffer
)(__DRIdrawable
*driDrawable
, void *loaderPrivate
);
817 * Get list of buffers from the server
819 * Gets a list of buffer for the specified set of attachments. Unlike
820 * \c ::getBuffers, this function takes a list of attachments paired with
821 * opaque \c unsigned \c int value describing the format of the buffer.
822 * It is the responsibility of the caller to know what the service that
823 * allocates the buffers will expect to receive for the format.
825 * \param driDrawable Drawable whose buffers are being queried.
826 * \param width Output where the width of the buffers is stored.
827 * \param height Output where the height of the buffers is stored.
828 * \param attachments List of pairs of attachment ID and opaque format
829 * requested for the drawable.
830 * \param count Number of attachment / format pairs stored in
832 * \param loaderPrivate Loader's private data that was previously passed
833 * into __DRIdri2ExtensionRec::createNewDrawable.
835 __DRIbuffer
*(*getBuffersWithFormat
)(__DRIdrawable
*driDrawable
,
836 int *width
, int *height
,
837 unsigned int *attachments
, int count
,
838 int *out_count
, void *loaderPrivate
);
842 * This extension provides alternative screen, drawable and context
843 * constructors for DRI2.
845 #define __DRI_DRI2 "DRI_DRI2"
846 #define __DRI_DRI2_VERSION 4
848 #define __DRI_API_OPENGL 0 /**< OpenGL compatibility profile */
849 #define __DRI_API_GLES 1 /**< OpenGL ES 1.x */
850 #define __DRI_API_GLES2 2 /**< OpenGL ES 2.x */
851 #define __DRI_API_OPENGL_CORE 3 /**< OpenGL 3.2+ core profile */
852 #define __DRI_API_GLES3 4 /**< OpenGL ES 3.x */
854 #define __DRI_CTX_ATTRIB_MAJOR_VERSION 0
855 #define __DRI_CTX_ATTRIB_MINOR_VERSION 1
856 #define __DRI_CTX_ATTRIB_FLAGS 2
859 * \requires __DRI2_ROBUSTNESS.
861 #define __DRI_CTX_ATTRIB_RESET_STRATEGY 3
863 #define __DRI_CTX_FLAG_DEBUG 0x00000001
864 #define __DRI_CTX_FLAG_FORWARD_COMPATIBLE 0x00000002
867 * \requires __DRI2_ROBUSTNESS.
869 #define __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS 0x00000004
872 * \name Context reset strategies.
875 #define __DRI_CTX_RESET_NO_NOTIFICATION 0
876 #define __DRI_CTX_RESET_LOSE_CONTEXT 1
880 * \name Reasons that __DRIdri2Extension::createContextAttribs might fail
884 #define __DRI_CTX_ERROR_SUCCESS 0
886 /** Memory allocation failure */
887 #define __DRI_CTX_ERROR_NO_MEMORY 1
889 /** Client requested an API (e.g., OpenGL ES 2.0) that the driver can't do. */
890 #define __DRI_CTX_ERROR_BAD_API 2
892 /** Client requested an API version that the driver can't do. */
893 #define __DRI_CTX_ERROR_BAD_VERSION 3
895 /** Client requested a flag or combination of flags the driver can't do. */
896 #define __DRI_CTX_ERROR_BAD_FLAG 4
898 /** Client requested an attribute the driver doesn't understand. */
899 #define __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE 5
901 /** Client requested a flag the driver doesn't understand. */
902 #define __DRI_CTX_ERROR_UNKNOWN_FLAG 6
905 struct __DRIdri2ExtensionRec
{
908 __DRIscreen
*(*createNewScreen
)(int screen
, int fd
,
909 const __DRIextension
**extensions
,
910 const __DRIconfig
***driver_configs
,
911 void *loaderPrivate
);
913 __DRIdrawable
*(*createNewDrawable
)(__DRIscreen
*screen
,
914 const __DRIconfig
*config
,
915 void *loaderPrivate
);
917 __DRIcontext
*(*createNewContext
)(__DRIscreen
*screen
,
918 const __DRIconfig
*config
,
919 __DRIcontext
*shared
,
920 void *loaderPrivate
);
922 /* Since version 2 */
923 unsigned int (*getAPIMask
)(__DRIscreen
*screen
);
925 __DRIcontext
*(*createNewContextForAPI
)(__DRIscreen
*screen
,
927 const __DRIconfig
*config
,
928 __DRIcontext
*shared
,
931 __DRIbuffer
*(*allocateBuffer
)(__DRIscreen
*screen
,
932 unsigned int attachment
,
936 void (*releaseBuffer
)(__DRIscreen
*screen
,
937 __DRIbuffer
*buffer
);
940 * Create a context for a particular API with a set of attributes
944 * \sa __DRIswrastExtensionRec::createContextAttribs
946 __DRIcontext
*(*createContextAttribs
)(__DRIscreen
*screen
,
948 const __DRIconfig
*config
,
949 __DRIcontext
*shared
,
950 unsigned num_attribs
,
951 const uint32_t *attribs
,
953 void *loaderPrivate
);
956 * createNewScreen with the driver's extension list passed in.
960 __DRIscreen
*(*createNewScreen2
)(int screen
, int fd
,
961 const __DRIextension
**loader_extensions
,
962 const __DRIextension
**driver_extensions
,
963 const __DRIconfig
***driver_configs
,
964 void *loaderPrivate
);
969 * This extension provides functionality to enable various EGLImage
972 #define __DRI_IMAGE "DRI_IMAGE"
973 #define __DRI_IMAGE_VERSION 8
976 * These formats correspond to the similarly named MESA_FORMAT_*
977 * tokens, except in the native endian of the CPU. For example, on
978 * little endian __DRI_IMAGE_FORMAT_XRGB8888 corresponds to
979 * MESA_FORMAT_XRGB8888, but MESA_FORMAT_XRGB8888_REV on big endian.
981 * __DRI_IMAGE_FORMAT_NONE is for images that aren't directly usable
982 * by the driver (YUV planar formats) but serve as a base image for
983 * creating sub-images for the different planes within the image.
985 * R8, GR88 and NONE should not be used with createImageFormName or
986 * createImage, and are returned by query from sub images created with
987 * createImageFromNames (NONE, see above) and fromPlane (R8 & GR88).
989 #define __DRI_IMAGE_FORMAT_RGB565 0x1001
990 #define __DRI_IMAGE_FORMAT_XRGB8888 0x1002
991 #define __DRI_IMAGE_FORMAT_ARGB8888 0x1003
992 #define __DRI_IMAGE_FORMAT_ABGR8888 0x1004
993 #define __DRI_IMAGE_FORMAT_XBGR8888 0x1005
994 #define __DRI_IMAGE_FORMAT_R8 0x1006 /* Since version 5 */
995 #define __DRI_IMAGE_FORMAT_GR88 0x1007
996 #define __DRI_IMAGE_FORMAT_NONE 0x1008
997 #define __DRI_IMAGE_FORMAT_XRGB2101010 0x1009
998 #define __DRI_IMAGE_FORMAT_ARGB2101010 0x100a
1000 #define __DRI_IMAGE_USE_SHARE 0x0001
1001 #define __DRI_IMAGE_USE_SCANOUT 0x0002
1002 #define __DRI_IMAGE_USE_CURSOR 0x0004 /* Depricated */
1003 #define __DRI_IMAGE_USE_LINEAR 0x0008
1007 * Four CC formats that matches with WL_DRM_FORMAT_* from wayland_drm.h
1008 * and GBM_FORMAT_* from gbm.h, used with createImageFromNames.
1013 #define __DRI_IMAGE_FOURCC_RGB565 0x36314752
1014 #define __DRI_IMAGE_FOURCC_ARGB8888 0x34325241
1015 #define __DRI_IMAGE_FOURCC_XRGB8888 0x34325258
1016 #define __DRI_IMAGE_FOURCC_ABGR8888 0x34324241
1017 #define __DRI_IMAGE_FOURCC_XBGR8888 0x34324258
1018 #define __DRI_IMAGE_FOURCC_YUV410 0x39565559
1019 #define __DRI_IMAGE_FOURCC_YUV411 0x31315559
1020 #define __DRI_IMAGE_FOURCC_YUV420 0x32315559
1021 #define __DRI_IMAGE_FOURCC_YUV422 0x36315559
1022 #define __DRI_IMAGE_FOURCC_YUV444 0x34325559
1023 #define __DRI_IMAGE_FOURCC_NV12 0x3231564e
1024 #define __DRI_IMAGE_FOURCC_NV16 0x3631564e
1025 #define __DRI_IMAGE_FOURCC_YUYV 0x56595559
1029 * Queryable on images created by createImageFromNames.
1031 * RGB and RGBA are may be usable directly as images but its still
1032 * recommended to call fromPlanar with plane == 0.
1034 * Y_U_V, Y_UV and Y_XUXV all requires call to fromPlanar to create
1035 * usable sub-images, sampling from images return raw YUV data and
1036 * color conversion needs to be done in the shader.
1041 #define __DRI_IMAGE_COMPONENTS_RGB 0x3001
1042 #define __DRI_IMAGE_COMPONENTS_RGBA 0x3002
1043 #define __DRI_IMAGE_COMPONENTS_Y_U_V 0x3003
1044 #define __DRI_IMAGE_COMPONENTS_Y_UV 0x3004
1045 #define __DRI_IMAGE_COMPONENTS_Y_XUXV 0x3005
1049 * queryImage attributes
1052 #define __DRI_IMAGE_ATTRIB_STRIDE 0x2000
1053 #define __DRI_IMAGE_ATTRIB_HANDLE 0x2001
1054 #define __DRI_IMAGE_ATTRIB_NAME 0x2002
1055 #define __DRI_IMAGE_ATTRIB_FORMAT 0x2003 /* available in versions 3+ */
1056 #define __DRI_IMAGE_ATTRIB_WIDTH 0x2004 /* available in versions 4+ */
1057 #define __DRI_IMAGE_ATTRIB_HEIGHT 0x2005
1058 #define __DRI_IMAGE_ATTRIB_COMPONENTS 0x2006 /* available in versions 5+ */
1059 #define __DRI_IMAGE_ATTRIB_FD 0x2007 /* available in versions
1060 * 7+. Each query will return a
1063 enum __DRIYUVColorSpace
{
1064 __DRI_YUV_COLOR_SPACE_UNDEFINED
= 0,
1065 __DRI_YUV_COLOR_SPACE_ITU_REC601
= 0x327F,
1066 __DRI_YUV_COLOR_SPACE_ITU_REC709
= 0x3280,
1067 __DRI_YUV_COLOR_SPACE_ITU_REC2020
= 0x3281
1070 enum __DRISampleRange
{
1071 __DRI_YUV_RANGE_UNDEFINED
= 0,
1072 __DRI_YUV_FULL_RANGE
= 0x3282,
1073 __DRI_YUV_NARROW_RANGE
= 0x3283
1076 enum __DRIChromaSiting
{
1077 __DRI_YUV_CHROMA_SITING_UNDEFINED
= 0,
1078 __DRI_YUV_CHROMA_SITING_0
= 0x3284,
1079 __DRI_YUV_CHROMA_SITING_0_5
= 0x3285
1083 * \name Reasons that __DRIimageExtensionRec::createImageFromTexture might fail
1087 #define __DRI_IMAGE_ERROR_SUCCESS 0
1089 /** Memory allocation failure */
1090 #define __DRI_IMAGE_ERROR_BAD_ALLOC 1
1092 /** Client requested an invalid attribute for a texture object */
1093 #define __DRI_IMAGE_ERROR_BAD_MATCH 2
1095 /** Client requested an invalid texture object */
1096 #define __DRI_IMAGE_ERROR_BAD_PARAMETER 3
1099 typedef struct __DRIimageRec __DRIimage
;
1100 typedef struct __DRIimageExtensionRec __DRIimageExtension
;
1101 struct __DRIimageExtensionRec
{
1102 __DRIextension base
;
1104 __DRIimage
*(*createImageFromName
)(__DRIscreen
*screen
,
1105 int width
, int height
, int format
,
1106 int name
, int pitch
,
1107 void *loaderPrivate
);
1109 __DRIimage
*(*createImageFromRenderbuffer
)(__DRIcontext
*context
,
1111 void *loaderPrivate
);
1113 void (*destroyImage
)(__DRIimage
*image
);
1115 __DRIimage
*(*createImage
)(__DRIscreen
*screen
,
1116 int width
, int height
, int format
,
1118 void *loaderPrivate
);
1120 GLboolean (*queryImage
)(__DRIimage
*image
, int attrib
, int *value
);
1123 * The new __DRIimage will share the content with the old one, see dup(2).
1125 __DRIimage
*(*dupImage
)(__DRIimage
*image
, void *loaderPrivate
);
1128 * Validate that a __DRIimage can be used a certain way.
1132 GLboolean (*validateUsage
)(__DRIimage
*image
, unsigned int use
);
1135 * Unlike createImageFromName __DRI_IMAGE_FORMAT is not but instead
1136 * __DRI_IMAGE_FOURCC and strides are in bytes not pixels. Stride is
1137 * also per block and not per pixel (for non-RGB, see gallium blocks).
1141 __DRIimage
*(*createImageFromNames
)(__DRIscreen
*screen
,
1142 int width
, int height
, int fourcc
,
1143 int *names
, int num_names
,
1144 int *strides
, int *offsets
,
1145 void *loaderPrivate
);
1148 * Create an image out of a sub-region of a parent image. This
1149 * entry point lets us create individual __DRIimages for different
1150 * planes in a planar buffer (typically yuv), for example. While a
1151 * sub-image shares the underlying buffer object with the parent
1152 * image and other sibling sub-images, the life times of parent and
1153 * sub-images are not dependent. Destroying the parent or a
1154 * sub-image doesn't affect other images. The underlying buffer
1155 * object is free when no __DRIimage remains that references it.
1157 * Sub-images may overlap, but rendering to overlapping sub-images
1162 __DRIimage
*(*fromPlanar
)(__DRIimage
*image
, int plane
,
1163 void *loaderPrivate
);
1166 * Create image from texture.
1170 __DRIimage
*(*createImageFromTexture
)(__DRIcontext
*context
,
1176 void *loaderPrivate
);
1178 * Like createImageFromNames, but takes a prime fd instead.
1182 __DRIimage
*(*createImageFromFds
)(__DRIscreen
*screen
,
1183 int width
, int height
, int fourcc
,
1184 int *fds
, int num_fds
,
1185 int *strides
, int *offsets
,
1186 void *loaderPrivate
);
1189 * Like createImageFromFds, but takes additional attributes.
1191 * For EGL_EXT_image_dma_buf_import.
1195 __DRIimage
*(*createImageFromDmaBufs
)(__DRIscreen
*screen
,
1196 int width
, int height
, int fourcc
,
1197 int *fds
, int num_fds
,
1198 int *strides
, int *offsets
,
1199 enum __DRIYUVColorSpace color_space
,
1200 enum __DRISampleRange sample_range
,
1201 enum __DRIChromaSiting horiz_siting
,
1202 enum __DRIChromaSiting vert_siting
,
1204 void *loaderPrivate
);
1209 * This extension must be implemented by the loader and passed to the
1210 * driver at screen creation time. The EGLImage entry points in the
1211 * various client APIs take opaque EGLImage handles and use this
1212 * extension to map them to a __DRIimage. At version 1, this
1213 * extensions allows mapping EGLImage pointers to __DRIimage pointers,
1214 * but future versions could support other EGLImage-like, opaque types
1215 * with new lookup functions.
1217 #define __DRI_IMAGE_LOOKUP "DRI_IMAGE_LOOKUP"
1218 #define __DRI_IMAGE_LOOKUP_VERSION 1
1220 typedef struct __DRIimageLookupExtensionRec __DRIimageLookupExtension
;
1221 struct __DRIimageLookupExtensionRec
{
1222 __DRIextension base
;
1224 __DRIimage
*(*lookupEGLImage
)(__DRIscreen
*screen
, void *image
,
1225 void *loaderPrivate
);
1229 * This extension allows for common DRI2 options
1231 #define __DRI2_CONFIG_QUERY "DRI_CONFIG_QUERY"
1232 #define __DRI2_CONFIG_QUERY_VERSION 1
1234 typedef struct __DRI2configQueryExtensionRec __DRI2configQueryExtension
;
1235 struct __DRI2configQueryExtensionRec
{
1236 __DRIextension base
;
1238 int (*configQueryb
)(__DRIscreen
*screen
, const char *var
, GLboolean
*val
);
1239 int (*configQueryi
)(__DRIscreen
*screen
, const char *var
, GLint
*val
);
1240 int (*configQueryf
)(__DRIscreen
*screen
, const char *var
, GLfloat
*val
);
1244 * Robust context driver extension.
1246 * Existence of this extension means the driver can accept the
1247 * \c __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag and the
1248 * \c __DRI_CTX_ATTRIB_RESET_STRATEGY attribute in
1249 * \c __DRIdri2ExtensionRec::createContextAttribs.
1251 #define __DRI2_ROBUSTNESS "DRI_Robustness"
1252 #define __DRI2_ROBUSTNESS_VERSION 1
1254 typedef struct __DRIrobustnessExtensionRec __DRIrobustnessExtension
;
1255 struct __DRIrobustnessExtensionRec
{
1256 __DRIextension base
;
1260 * DRI config options extension.
1262 * This extension provides the XML string containing driver options for use by
1263 * the loader in supporting the driconf application.
1265 #define __DRI_CONFIG_OPTIONS "DRI_ConfigOptions"
1266 #define __DRI_CONFIG_OPTIONS_VERSION 1
1268 typedef struct __DRIconfigOptionsExtensionRec
{
1269 __DRIextension base
;
1271 } __DRIconfigOptionsExtension
;
1274 * This extension provides a driver vtable to a set of common driver helper
1275 * functions (driCoreExtension, driDRI2Extension) within the driver
1276 * implementation, as opposed to having to pass them through a global
1279 * It is not intended to be public API to the actual loader, and the vtable
1280 * layout may change at any time.
1282 #define __DRI_DRIVER_VTABLE "DRI_DriverVtable"
1283 #define __DRI_DRIVER_VTABLE_VERSION 1
1285 typedef struct __DRIDriverVtableExtensionRec
{
1286 __DRIextension base
;
1287 const struct __DriverAPIRec
*vtable
;
1288 } __DRIDriverVtableExtension
;