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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 3
271 struct __DRI2flushExtensionRec {
273 void (*flush)(__DRIdrawable *drawable);
276 * Ask the driver to call getBuffers/getBuffersWithFormat before
277 * it starts rendering again.
279 * \param drawable the drawable to invalidate
283 void (*invalidate)(__DRIdrawable *drawable);
288 * Extension that the driver uses to request
289 * throttle callbacks.
292 #define __DRI2_THROTTLE "DRI2_Throttle"
293 #define __DRI2_THROTTLE_VERSION 1
295 enum __DRI2throttleReason {
296 __DRI2_THROTTLE_SWAPBUFFER,
297 __DRI2_THROTTLE_COPYSUBBUFFER,
298 __DRI2_THROTTLE_FLUSHFRONT
301 struct __DRI2throttleExtensionRec {
303 void (*throttle)(__DRIcontext *ctx,
304 __DRIdrawable *drawable,
305 enum __DRI2throttleReason reason);
309 * XML document describing the configuration options supported by the
312 extern const char __driConfigOptions[];
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
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;
334 * Callback to getDrawableInfo protocol
336 #define __DRI_GET_DRAWABLE_INFO "DRI_GetDrawableInfo"
337 #define __DRI_GET_DRAWABLE_INFO_VERSION 1
338 struct __DRIgetDrawableInfoExtensionRec {
342 * This function is used to get information about the position, size, and
343 * clip rects of a drawable.
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);
355 * Callback to get system time for media stream counter extensions.
357 #define __DRI_SYSTEM_TIME "DRI_SystemTime"
358 #define __DRI_SYSTEM_TIME_VERSION 1
359 struct __DRIsystemTimeExtensionRec {
363 * Get the 64-bit unadjusted system time (UST).
365 int (*getUST)(int64_t * ust);
368 * Get the media stream counter (MSC) rate.
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.
374 GLboolean (*getMSCRate)(__DRIdrawable *draw,
375 int32_t * numerator, int32_t * denominator,
376 void *loaderPrivate);
382 #define __DRI_DAMAGE "DRI_Damage"
383 #define __DRI_DAMAGE_VERSION 1
384 struct __DRIdamageExtensionRec {
388 * Reports areas of the given drawable which have been modified by the
391 * \param drawable which the drawing was done to.
392 * \param rects rectangles affected, with the drawable origin as the
394 * \param x X offset of the drawable within the screen (used in the
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
402 void (*reportDamage)(__DRIdrawable *draw,
404 drm_clip_rect_t *rects, int num_rects,
405 GLboolean front_buffer,
406 void *loaderPrivate);
409 #define __DRI_SWRAST_IMAGE_OP_DRAW 1
410 #define __DRI_SWRAST_IMAGE_OP_CLEAR 2
411 #define __DRI_SWRAST_IMAGE_OP_SWAP 3
414 * SWRast Loader extension.
416 #define __DRI_SWRAST_LOADER "DRI_SWRastLoader"
417 #define __DRI_SWRAST_LOADER_VERSION 1
418 struct __DRIswrastLoaderExtensionRec {
422 * Drawable position and size
424 void (*getDrawableInfo)(__DRIdrawable *drawable,
425 int *x, int *y, int *width, int *height,
426 void *loaderPrivate);
429 * Put image to drawable
431 void (*putImage)(__DRIdrawable *drawable, int op,
432 int x, int y, int width, int height,
433 char *data, void *loaderPrivate);
436 * Get image from readable
438 void (*getImage)(__DRIdrawable *readable,
439 int x, int y, int width, int height,
440 char *data, void *loaderPrivate);
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
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.
455 #define __DRI_USE_INVALIDATE "DRI_UseInvalidate"
456 #define __DRI_USE_INVALIDATE_VERSION 1
458 typedef struct __DRIuseInvalidateExtensionRec __DRIuseInvalidateExtension;
459 struct __DRIuseInvalidateExtensionRec {
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.
469 #define __DRI_DRIVER_EXTENSIONS "__driDriverExtensions"
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.
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
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
531 /* __DRI_ATTRIB_CONFIG_CAVEAT */
532 #define __DRI_ATTRIB_SLOW_BIT 0x01
533 #define __DRI_ATTRIB_NON_CONFORMANT_CONFIG 0x02
535 /* __DRI_ATTRIB_TRANSPARENT_TYPE */
536 #define __DRI_ATTRIB_TRANSPARENT_RGB 0x00
537 #define __DRI_ATTRIB_TRANSPARENT_INDEX 0x01
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
545 * This extension defines the core DRI functionality.
547 #define __DRI_CORE "DRI_Core"
548 #define __DRI_CORE_VERSION 1
550 struct __DRIcoreExtensionRec {
553 __DRIscreen *(*createNewScreen)(int screen, int fd,
554 unsigned int sarea_handle,
555 const __DRIextension **extensions,
556 const __DRIconfig ***driverConfigs,
557 void *loaderPrivate);
559 void (*destroyScreen)(__DRIscreen *screen);
561 const __DRIextension **(*getExtensions)(__DRIscreen *screen);
563 int (*getConfigAttrib)(const __DRIconfig *config,
565 unsigned int *value);
567 int (*indexConfigAttrib)(const __DRIconfig *config, int index,
568 unsigned int *attrib, unsigned int *value);
570 __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
571 const __DRIconfig *config,
572 unsigned int drawable_id,
574 void *loaderPrivate);
576 void (*destroyDrawable)(__DRIdrawable *drawable);
578 void (*swapBuffers)(__DRIdrawable *drawable);
580 __DRIcontext *(*createNewContext)(__DRIscreen *screen,
581 const __DRIconfig *config,
582 __DRIcontext *shared,
583 void *loaderPrivate);
585 int (*copyContext)(__DRIcontext *dest,
589 void (*destroyContext)(__DRIcontext *context);
591 int (*bindContext)(__DRIcontext *ctx,
592 __DRIdrawable *pdraw,
593 __DRIdrawable *pread);
595 int (*unbindContext)(__DRIcontext *ctx);
599 * Stored version of some component (i.e., server-side DRI module, kernel-side
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.
607 struct __DRIversionRec {
608 int major; /**< Major version number. */
609 int minor; /**< Minor version number. */
610 int patch; /**< Patch-level. */
614 * Framebuffer information record. Used by libGL to communicate information
615 * about the framebuffer to the driver's \c __driCreateNewScreen function.
617 * In XFree86, most of this information is derrived from data returned by
618 * calling \c XF86DRIGetDeviceInfo.
620 * \sa XF86DRIGetDeviceInfo __DRIdisplayRec::createNewScreen
621 * __driUtilCreateNewScreen CallCreateNewScreen
623 * \bug This structure could be better named.
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
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. */
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.
646 #define __DRI_LEGACY "DRI_Legacy"
647 #define __DRI_LEGACY_VERSION 1
649 struct __DRIlegacyExtensionRec {
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);
662 __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
663 const __DRIconfig *config,
664 drm_drawable_t hwDrawable,
665 int renderType, const int *attrs,
666 void *loaderPrivate);
668 __DRIcontext *(*createNewContext)(__DRIscreen *screen,
669 const __DRIconfig *config,
671 __DRIcontext *shared,
672 drm_context_t hwContext,
673 void *loaderPrivate);
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.
681 #define __DRI_SWRAST "DRI_SWRast"
682 #define __DRI_SWRAST_VERSION 3
684 struct __DRIswrastExtensionRec {
687 __DRIscreen *(*createNewScreen)(int screen,
688 const __DRIextension **extensions,
689 const __DRIconfig ***driver_configs,
690 void *loaderPrivate);
692 __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
693 const __DRIconfig *config,
694 void *loaderPrivate);
696 /* Since version 2 */
697 __DRIcontext *(*createNewContextForAPI)(__DRIscreen *screen,
699 const __DRIconfig *config,
700 __DRIcontext *shared,
704 * Create a context for a particular API with a set of attributes
708 * \sa __DRIdri2ExtensionRec::createContextAttribs
710 __DRIcontext *(*createContextAttribs)(__DRIscreen *screen,
712 const __DRIconfig *config,
713 __DRIcontext *shared,
714 unsigned num_attribs,
715 const uint32_t *attribs,
717 void *loaderPrivate);
721 * DRI2 Loader extension.
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
735 /* Inofficial and for internal use. Increase when adding a new buffer token. */
736 #define __DRI_BUFFER_COUNT 11
738 struct __DRIbufferRec {
739 unsigned int attachment;
746 #define __DRI_DRI2_LOADER "DRI_DRI2Loader"
747 #define __DRI_DRI2_LOADER_VERSION 3
748 struct __DRIdri2LoaderExtensionRec {
751 __DRIbuffer *(*getBuffers)(__DRIdrawable *driDrawable,
752 int *width, int *height,
753 unsigned int *attachments, int count,
754 int *out_count, void *loaderPrivate);
757 * Flush pending front-buffer rendering
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.
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
767 void (*flushFrontBuffer)(__DRIdrawable *driDrawable, void *loaderPrivate);
771 * Get list of buffers from the server
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.
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
786 * \param loaderPrivate Loader's private data that was previously passed
787 * into __DRIdri2ExtensionRec::createNewDrawable.
789 __DRIbuffer *(*getBuffersWithFormat)(__DRIdrawable *driDrawable,
790 int *width, int *height,
791 unsigned int *attachments, int count,
792 int *out_count, void *loaderPrivate);
796 * This extension provides alternative screen, drawable and context
797 * constructors for DRI2.
799 #define __DRI_DRI2 "DRI_DRI2"
800 #define __DRI_DRI2_VERSION 3
802 #define __DRI_API_OPENGL 0 /**< OpenGL compatibility profile */
803 #define __DRI_API_GLES 1 /**< OpenGL ES 1.x */
804 #define __DRI_API_GLES2 2 /**< OpenGL ES 2.0 or 3.0 */
805 #define __DRI_API_OPENGL_CORE 3 /**< OpenGL 3.2+ core profile */
807 #define __DRI_CTX_ATTRIB_MAJOR_VERSION 0
808 #define __DRI_CTX_ATTRIB_MINOR_VERSION 1
809 #define __DRI_CTX_ATTRIB_FLAGS 2
812 * \requires __DRI2_ROBUSTNESS.
814 #define __DRI_CTX_ATTRIB_RESET_STRATEGY 3
816 #define __DRI_CTX_FLAG_DEBUG 0x00000001
817 #define __DRI_CTX_FLAG_FORWARD_COMPATIBLE 0x00000002
820 * \requires __DRI2_ROBUSTNESS.
822 #define __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS 0x00000004
825 * \name Context reset strategies.
828 #define __DRI_CTX_RESET_NO_NOTIFICATION 0
829 #define __DRI_CTX_RESET_LOSE_CONTEXT 1
833 * \name Reasons that __DRIdri2Extension::createContextAttribs might fail
837 #define __DRI_CTX_ERROR_SUCCESS 0
839 /** Memory allocation failure */
840 #define __DRI_CTX_ERROR_NO_MEMORY 1
842 /** Client requested an API (e.g., OpenGL ES 2.0) that the driver can't do. */
843 #define __DRI_CTX_ERROR_BAD_API 2
845 /** Client requested an API version that the driver can't do. */
846 #define __DRI_CTX_ERROR_BAD_VERSION 3
848 /** Client requested a flag or combination of flags the driver can't do. */
849 #define __DRI_CTX_ERROR_BAD_FLAG 4
851 /** Client requested an attribute the driver doesn't understand. */
852 #define __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE 5
854 /** Client requested a flag the driver doesn't understand. */
855 #define __DRI_CTX_ERROR_UNKNOWN_FLAG 6
858 struct __DRIdri2ExtensionRec {
861 __DRIscreen *(*createNewScreen)(int screen, int fd,
862 const __DRIextension **extensions,
863 const __DRIconfig ***driver_configs,
864 void *loaderPrivate);
866 __DRIdrawable *(*createNewDrawable)(__DRIscreen *screen,
867 const __DRIconfig *config,
868 void *loaderPrivate);
870 __DRIcontext *(*createNewContext)(__DRIscreen *screen,
871 const __DRIconfig *config,
872 __DRIcontext *shared,
873 void *loaderPrivate);
875 /* Since version 2 */
876 unsigned int (*getAPIMask)(__DRIscreen *screen);
878 __DRIcontext *(*createNewContextForAPI)(__DRIscreen *screen,
880 const __DRIconfig *config,
881 __DRIcontext *shared,
884 __DRIbuffer *(*allocateBuffer)(__DRIscreen *screen,
885 unsigned int attachment,
889 void (*releaseBuffer)(__DRIscreen *screen,
890 __DRIbuffer *buffer);
893 * Create a context for a particular API with a set of attributes
897 * \sa __DRIswrastExtensionRec::createContextAttribs
899 __DRIcontext *(*createContextAttribs)(__DRIscreen *screen,
901 const __DRIconfig *config,
902 __DRIcontext *shared,
903 unsigned num_attribs,
904 const uint32_t *attribs,
906 void *loaderPrivate);
911 * This extension provides functionality to enable various EGLImage
914 #define __DRI_IMAGE "DRI_IMAGE"
915 #define __DRI_IMAGE_VERSION 5
918 * These formats correspond to the similarly named MESA_FORMAT_*
919 * tokens, except in the native endian of the CPU. For example, on
920 * little endian __DRI_IMAGE_FORMAT_XRGB8888 corresponds to
921 * MESA_FORMAT_XRGB8888, but MESA_FORMAT_XRGB8888_REV on big endian.
923 * __DRI_IMAGE_FORMAT_NONE is for images that aren't directly usable
924 * by the driver (YUV planar formats) but serve as a base image for
925 * creating sub-images for the different planes within the image.
927 #define __DRI_IMAGE_FORMAT_RGB565 0x1001
928 #define __DRI_IMAGE_FORMAT_XRGB8888 0x1002
929 #define __DRI_IMAGE_FORMAT_ARGB8888 0x1003
930 #define __DRI_IMAGE_FORMAT_ABGR8888 0x1004
931 #define __DRI_IMAGE_FORMAT_XBGR8888 0x1005
932 #define __DRI_IMAGE_FORMAT_R8 0x1006 /* Since version 5 */
933 #define __DRI_IMAGE_FORMAT_GR88 0x1007
934 #define __DRI_IMAGE_FORMAT_NONE 0x1008
936 #define __DRI_IMAGE_USE_SHARE 0x0001
937 #define __DRI_IMAGE_USE_SCANOUT 0x0002
938 #define __DRI_IMAGE_USE_CURSOR 0x0004 /* Depricated */
941 * queryImage attributes
944 #define __DRI_IMAGE_ATTRIB_STRIDE 0x2000
945 #define __DRI_IMAGE_ATTRIB_HANDLE 0x2001
946 #define __DRI_IMAGE_ATTRIB_NAME 0x2002
947 #define __DRI_IMAGE_ATTRIB_FORMAT 0x2003 /* available in versions 3+ */
948 #define __DRI_IMAGE_ATTRIB_WIDTH 0x2004 /* available in versions 5+ */
949 #define __DRI_IMAGE_ATTRIB_HEIGHT 0x2005
951 typedef struct __DRIimageRec __DRIimage;
952 typedef struct __DRIimageExtensionRec __DRIimageExtension;
953 struct __DRIimageExtensionRec {
956 __DRIimage *(*createImageFromName)(__DRIscreen *screen,
957 int width, int height, int format,
959 void *loaderPrivate);
961 __DRIimage *(*createImageFromRenderbuffer)(__DRIcontext *context,
963 void *loaderPrivate);
965 void (*destroyImage)(__DRIimage *image);
967 __DRIimage *(*createImage)(__DRIscreen *screen,
968 int width, int height, int format,
970 void *loaderPrivate);
972 GLboolean (*queryImage)(__DRIimage *image, int attrib, int *value);
975 * The new __DRIimage will share the content with the old one, see dup(2).
977 __DRIimage *(*dupImage)(__DRIimage *image, void *loaderPrivate);
980 * Validate that a __DRIimage can be used a certain way.
984 GLboolean (*validateUsage)(__DRIimage *image, unsigned int use);
987 * Create an image out of a sub-region of a parent image. This
988 * entry point lets us create individual __DRIimages for different
989 * planes in a planar buffer (typically yuv), for example. While a
990 * sub-image shares the underlying buffer object with the parent
991 * image and other sibling sub-images, the life times of parent and
992 * sub-images are not dependent. Destroying the parent or a
993 * sub-image doesn't affect other images. The underlying buffer
994 * object is free when no __DRIimage remains that references it.
996 * Sub-images may overlap, but rendering to overlapping sub-images
1001 __DRIimage *(*createSubImage)(__DRIimage *image,
1002 int width, int height, int format,
1003 int offset, int pitch,
1004 void *loaderPrivate);
1009 * This extension must be implemented by the loader and passed to the
1010 * driver at screen creation time. The EGLImage entry points in the
1011 * various client APIs take opaque EGLImage handles and use this
1012 * extension to map them to a __DRIimage. At version 1, this
1013 * extensions allows mapping EGLImage pointers to __DRIimage pointers,
1014 * but future versions could support other EGLImage-like, opaque types
1015 * with new lookup functions.
1017 #define __DRI_IMAGE_LOOKUP "DRI_IMAGE_LOOKUP"
1018 #define __DRI_IMAGE_LOOKUP_VERSION 1
1020 typedef struct __DRIimageLookupExtensionRec __DRIimageLookupExtension;
1021 struct __DRIimageLookupExtensionRec {
1022 __DRIextension base;
1024 __DRIimage *(*lookupEGLImage)(__DRIscreen *screen, void *image,
1025 void *loaderPrivate);
1029 * This extension allows for common DRI2 options
1031 #define __DRI2_CONFIG_QUERY "DRI_CONFIG_QUERY"
1032 #define __DRI2_CONFIG_QUERY_VERSION 1
1034 typedef struct __DRI2configQueryExtensionRec __DRI2configQueryExtension;
1035 struct __DRI2configQueryExtensionRec {
1036 __DRIextension base;
1038 int (*configQueryb)(__DRIscreen *screen, const char *var, GLboolean *val);
1039 int (*configQueryi)(__DRIscreen *screen, const char *var, GLint *val);
1040 int (*configQueryf)(__DRIscreen *screen, const char *var, GLfloat *val);
1044 * Robust context driver extension.
1046 * Existence of this extension means the driver can accept the
1047 * \c __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag and the
1048 * \c __DRI_CTX_ATTRIB_RESET_STRATEGY attribute in
1049 * \c __DRIdri2ExtensionRec::createContextAttribs.
1051 #define __DRI2_ROBUSTNESS "DRI_Robustness"
1052 #define __DRI2_ROBUSTNESS_VERSION 1
1054 typedef struct __DRIrobustnessExtensionRec __DRIrobustnessExtension;
1055 struct __DRIrobustnessExtensionRec {
1056 __DRIextension base;