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"),
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:
14 * The above copyright notice and this permission notice (including the next
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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.
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
46 typedef unsigned int drm_context_t
;
47 typedef unsigned int drm_drawable_t
;
48 typedef struct drm_clip_rect drm_clip_rect_t
;
54 * \name DRI interface structures
56 * The following structures define the interface between the GLX client
57 * side library and the DRI (direct rendering infrastructure).
60 typedef struct __DRIdisplayRec __DRIdisplay
;
61 typedef struct __DRIscreenRec __DRIscreen
;
62 typedef struct __DRIcontextRec __DRIcontext
;
63 typedef struct __DRIdrawableRec __DRIdrawable
;
64 typedef struct __DRIconfigRec __DRIconfig
;
65 typedef struct __DRIframebufferRec __DRIframebuffer
;
66 typedef struct __DRIversionRec __DRIversion
;
68 typedef struct __DRIcoreExtensionRec __DRIcoreExtension
;
69 typedef struct __DRIextensionRec __DRIextension
;
70 typedef struct __DRIcopySubBufferExtensionRec __DRIcopySubBufferExtension
;
71 typedef struct __DRIswapControlExtensionRec __DRIswapControlExtension
;
72 typedef struct __DRIframeTrackingExtensionRec __DRIframeTrackingExtension
;
73 typedef struct __DRImediaStreamCounterExtensionRec __DRImediaStreamCounterExtension
;
74 typedef struct __DRItexOffsetExtensionRec __DRItexOffsetExtension
;
75 typedef struct __DRItexBufferExtensionRec __DRItexBufferExtension
;
76 typedef struct __DRIlegacyExtensionRec __DRIlegacyExtension
;
77 typedef struct __DRIswrastExtensionRec __DRIswrastExtension
;
78 typedef struct __DRIbufferRec __DRIbuffer
;
79 typedef struct __DRIdri2ExtensionRec __DRIdri2Extension
;
80 typedef struct __DRIdri2LoaderExtensionRec __DRIdri2LoaderExtension
;
81 typedef struct __DRI2flushExtensionRec __DRI2flushExtension
;
82 typedef struct __DRI2throttleExtensionRec __DRI2throttleExtension
;
83 typedef struct __DRI2fenceExtensionRec __DRI2fenceExtension
;
84 typedef struct __DRI2interopExtensionRec __DRI2interopExtension
;
85 typedef struct __DRI2blobExtensionRec __DRI2blobExtension
;
87 typedef struct __DRIimageLoaderExtensionRec __DRIimageLoaderExtension
;
88 typedef struct __DRIimageDriverExtensionRec __DRIimageDriverExtension
;
94 * Extension struct. Drivers 'inherit' from this struct by embedding
95 * it as the first element in the extension struct.
97 * We never break API in for a DRI extension. If we need to change
98 * the way things work in a non-backwards compatible manner, we
99 * introduce a new extension. During a transition period, we can
100 * leave both the old and the new extension in the driver, which
101 * allows us to move to the new interface without having to update the
102 * loader(s) in lock step.
104 * However, we can add entry points to an extension over time as long
105 * as we don't break the old ones. As we add entry points to an
106 * extension, we increase the version number. The corresponding
107 * #define can be used to guard code that accesses the new entry
108 * points at compile time and the version field in the extension
109 * struct can be used at run-time to determine how to use the
112 struct __DRIextensionRec
{
118 * The first set of extension are the screen extensions, returned by
119 * __DRIcore::getExtensions(). This entry point will return a list of
120 * extensions and the loader can use the ones it knows about by
121 * casting them to more specific extensions and advertising any GLX
122 * extensions the DRI extensions enables.
126 * Used by drivers to indicate support for setting the read drawable.
128 #define __DRI_READ_DRAWABLE "DRI_ReadDrawable"
129 #define __DRI_READ_DRAWABLE_VERSION 1
132 * Used by drivers that implement the GLX_MESA_copy_sub_buffer extension.
134 #define __DRI_COPY_SUB_BUFFER "DRI_CopySubBuffer"
135 #define __DRI_COPY_SUB_BUFFER_VERSION 1
136 struct __DRIcopySubBufferExtensionRec
{
138 void (*copySubBuffer
)(__DRIdrawable
*drawable
, int x
, int y
, int w
, int h
);
142 * Used by drivers that implement the GLX_SGI_swap_control or
143 * GLX_MESA_swap_control extension.
145 #define __DRI_SWAP_CONTROL "DRI_SwapControl"
146 #define __DRI_SWAP_CONTROL_VERSION 1
147 struct __DRIswapControlExtensionRec
{
149 void (*setSwapInterval
)(__DRIdrawable
*drawable
, unsigned int inteval
);
150 unsigned int (*getSwapInterval
)(__DRIdrawable
*drawable
);
154 * Used by drivers that implement the GLX_MESA_swap_frame_usage extension.
156 #define __DRI_FRAME_TRACKING "DRI_FrameTracking"
157 #define __DRI_FRAME_TRACKING_VERSION 1
158 struct __DRIframeTrackingExtensionRec
{
162 * Enable or disable frame usage tracking.
164 * \since Internal API version 20030317.
166 int (*frameTracking
)(__DRIdrawable
*drawable
, GLboolean enable
);
169 * Retrieve frame usage information.
171 * \since Internal API version 20030317.
173 int (*queryFrameTracking
)(__DRIdrawable
*drawable
,
174 int64_t * sbc
, int64_t * missedFrames
,
175 float * lastMissedUsage
, float * usage
);
180 * Used by drivers that implement the GLX_SGI_video_sync extension.
182 #define __DRI_MEDIA_STREAM_COUNTER "DRI_MediaStreamCounter"
183 #define __DRI_MEDIA_STREAM_COUNTER_VERSION 1
184 struct __DRImediaStreamCounterExtensionRec
{
188 * Wait for the MSC to equal target_msc, or, if that has already passed,
189 * the next time (MSC % divisor) is equal to remainder. If divisor is
190 * zero, the function will return as soon as MSC is greater than or equal
193 int (*waitForMSC
)(__DRIdrawable
*drawable
,
194 int64_t target_msc
, int64_t divisor
, int64_t remainder
,
195 int64_t * msc
, int64_t * sbc
);
198 * Get the number of vertical refreshes since some point in time before
199 * this function was first called (i.e., system start up).
201 int (*getDrawableMSC
)(__DRIscreen
*screen
, __DRIdrawable
*drawable
,
206 #define __DRI_TEX_OFFSET "DRI_TexOffset"
207 #define __DRI_TEX_OFFSET_VERSION 1
208 struct __DRItexOffsetExtensionRec
{
212 * Method to override base texture image with a driver specific 'offset'.
213 * The depth passed in allows e.g. to ignore the alpha channel of texture
214 * images where the non-alpha components don't occupy a whole texel.
216 * For GLX_EXT_texture_from_pixmap with AIGLX.
218 void (*setTexOffset
)(__DRIcontext
*pDRICtx
, GLint texname
,
219 unsigned long long offset
, GLint depth
, GLuint pitch
);
223 /* Valid values for format in the setTexBuffer2 function below. These
224 * values match the GLX tokens for compatibility reasons, but we
225 * define them here since the DRI interface can't depend on GLX. */
226 #define __DRI_TEXTURE_FORMAT_NONE 0x20D8
227 #define __DRI_TEXTURE_FORMAT_RGB 0x20D9
228 #define __DRI_TEXTURE_FORMAT_RGBA 0x20DA
230 #define __DRI_TEX_BUFFER "DRI_TexBuffer"
231 #define __DRI_TEX_BUFFER_VERSION 3
232 struct __DRItexBufferExtensionRec
{
236 * Method to override base texture image with the contents of a
239 * For GLX_EXT_texture_from_pixmap with AIGLX. Deprecated in favor of
240 * setTexBuffer2 in version 2 of this interface
242 void (*setTexBuffer
)(__DRIcontext
*pDRICtx
,
244 __DRIdrawable
*pDraw
);
247 * Method to override base texture image with the contents of a
248 * __DRIdrawable, including the required texture format attribute.
250 * For GLX_EXT_texture_from_pixmap with AIGLX.
254 void (*setTexBuffer2
)(__DRIcontext
*pDRICtx
,
257 __DRIdrawable
*pDraw
);
259 * Method to release texture buffer in case some special platform
262 * For GLX_EXT_texture_from_pixmap with AIGLX.
266 void (*releaseTexBuffer
)(__DRIcontext
*pDRICtx
,
268 __DRIdrawable
*pDraw
);
272 * Used by drivers that implement DRI2
274 #define __DRI2_FLUSH "DRI2_Flush"
275 #define __DRI2_FLUSH_VERSION 4
277 #define __DRI2_FLUSH_DRAWABLE (1 << 0) /* the drawable should be flushed. */
278 #define __DRI2_FLUSH_CONTEXT (1 << 1) /* glFlush should be called */
279 #define __DRI2_FLUSH_INVALIDATE_ANCILLARY (1 << 2)
281 enum __DRI2throttleReason
{
282 __DRI2_THROTTLE_SWAPBUFFER
,
283 __DRI2_THROTTLE_COPYSUBBUFFER
,
284 __DRI2_THROTTLE_FLUSHFRONT
287 struct __DRI2flushExtensionRec
{
289 void (*flush
)(__DRIdrawable
*drawable
);
292 * Ask the driver to call getBuffers/getBuffersWithFormat before
293 * it starts rendering again.
295 * \param drawable the drawable to invalidate
299 void (*invalidate
)(__DRIdrawable
*drawable
);
302 * This function reduces the number of flushes in the driver by combining
303 * several operations into one call.
310 * \param context the context
311 * \param drawable the drawable to flush
312 * \param flags a combination of _DRI2_FLUSH_xxx flags
313 * \param throttle_reason the reason for throttling, 0 = no throttling
317 void (*flush_with_flags
)(__DRIcontext
*ctx
,
318 __DRIdrawable
*drawable
,
320 enum __DRI2throttleReason throttle_reason
);
325 * Extension that the driver uses to request
326 * throttle callbacks.
329 #define __DRI2_THROTTLE "DRI2_Throttle"
330 #define __DRI2_THROTTLE_VERSION 1
332 struct __DRI2throttleExtensionRec
{
334 void (*throttle
)(__DRIcontext
*ctx
,
335 __DRIdrawable
*drawable
,
336 enum __DRI2throttleReason reason
);
340 * Extension for EGL_ANDROID_blob_cache
343 #define __DRI2_BLOB "DRI2_Blob"
344 #define __DRI2_BLOB_VERSION 1
347 (*__DRIblobCacheSet
) (const void *key
, signed long keySize
,
348 const void *value
, signed long valueSize
);
351 (*__DRIblobCacheGet
) (const void *key
, signed long keySize
,
352 void *value
, signed long valueSize
);
354 struct __DRI2blobExtensionRec
{
358 * Set cache functions for setting and getting cache entries.
360 void (*set_cache_funcs
) (__DRIscreen
*screen
,
361 __DRIblobCacheSet set
, __DRIblobCacheGet get
);
365 * Extension for fences / synchronization objects.
368 #define __DRI2_FENCE "DRI2_Fence"
369 #define __DRI2_FENCE_VERSION 2
371 #define __DRI2_FENCE_TIMEOUT_INFINITE 0xffffffffffffffffull
373 #define __DRI2_FENCE_FLAG_FLUSH_COMMANDS (1 << 0)
376 * \name Capabilities that might be returned by __DRI2fenceExtensionRec::get_capabilities
379 #define __DRI_FENCE_CAP_NATIVE_FD 1
382 struct __DRI2fenceExtensionRec
{
386 * Create and insert a fence into the command stream of the context.
388 void *(*create_fence
)(__DRIcontext
*ctx
);
391 * Get a fence associated with the OpenCL event object.
392 * This can be NULL, meaning that OpenCL interoperability is not supported.
394 void *(*get_fence_from_cl_event
)(__DRIscreen
*screen
, intptr_t cl_event
);
399 void (*destroy_fence
)(__DRIscreen
*screen
, void *fence
);
402 * This function waits and doesn't return until the fence is signalled
403 * or the timeout expires. It returns true if the fence has been signaled.
405 * \param ctx the context where commands are flushed
406 * \param fence the fence
407 * \param flags a combination of __DRI2_FENCE_FLAG_xxx flags
408 * \param timeout the timeout in ns or __DRI2_FENCE_TIMEOUT_INFINITE
410 GLboolean (*client_wait_sync
)(__DRIcontext
*ctx
, void *fence
,
411 unsigned flags
, uint64_t timeout
);
414 * This function enqueues a wait command into the command stream of
415 * the context and then returns. When the execution reaches the wait
416 * command, no further execution will be done in the context until
417 * the fence is signaled. This is a no-op if the device doesn't support
418 * parallel execution of contexts.
420 * \param ctx the context where the waiting is done
421 * \param fence the fence
422 * \param flags a combination of __DRI2_FENCE_FLAG_xxx flags that make
423 * sense with this function (right now there are none)
425 void (*server_wait_sync
)(__DRIcontext
*ctx
, void *fence
, unsigned flags
);
428 * Query for general capabilities of the driver that concern fences.
429 * Returns a bitmask of __DRI_FENCE_CAP_x
433 unsigned (*get_capabilities
)(__DRIscreen
*screen
);
436 * Create an fd (file descriptor) associated fence. If the fence fd
437 * is -1, this behaves similarly to create_fence() except that when
438 * rendering is flushed the driver creates a fence fd. Otherwise,
439 * the driver wraps an existing fence fd.
441 * This is used to implement the EGL_ANDROID_native_fence_sync extension.
445 * \param ctx the context associated with the fence
446 * \param fd the fence fd or -1
448 void *(*create_fence_fd
)(__DRIcontext
*ctx
, int fd
);
451 * For fences created with create_fence_fd(), after rendering is flushed,
452 * this retrieves the native fence fd. Caller takes ownership of the
453 * fd and will close() it when it is no longer needed.
457 * \param screen the screen associated with the fence
458 * \param fence the fence
460 int (*get_fence_fd
)(__DRIscreen
*screen
, void *fence
);
465 * Extension for API interop.
466 * See GL/mesa_glinterop.h.
469 #define __DRI2_INTEROP "DRI2_Interop"
470 #define __DRI2_INTEROP_VERSION 1
472 struct mesa_glinterop_device_info
;
473 struct mesa_glinterop_export_in
;
474 struct mesa_glinterop_export_out
;
476 struct __DRI2interopExtensionRec
{
479 /** Same as MesaGLInterop*QueryDeviceInfo. */
480 int (*query_device_info
)(__DRIcontext
*ctx
,
481 struct mesa_glinterop_device_info
*out
);
483 /** Same as MesaGLInterop*ExportObject. */
484 int (*export_object
)(__DRIcontext
*ctx
,
485 struct mesa_glinterop_export_in
*in
,
486 struct mesa_glinterop_export_out
*out
);
492 * The following extensions describe loader features that the DRI
493 * driver can make use of. Some of these are mandatory, such as the
494 * getDrawableInfo extension for DRI and the DRI Loader extensions for
495 * DRI2, while others are optional, and if present allow the driver to
496 * expose certain features. The loader pass in a NULL terminated
497 * array of these extensions to the driver in the createNewScreen
501 typedef struct __DRIgetDrawableInfoExtensionRec __DRIgetDrawableInfoExtension
;
502 typedef struct __DRIsystemTimeExtensionRec __DRIsystemTimeExtension
;
503 typedef struct __DRIdamageExtensionRec __DRIdamageExtension
;
504 typedef struct __DRIloaderExtensionRec __DRIloaderExtension
;
505 typedef struct __DRIswrastLoaderExtensionRec __DRIswrastLoaderExtension
;
509 * Callback to getDrawableInfo protocol
511 #define __DRI_GET_DRAWABLE_INFO "DRI_GetDrawableInfo"
512 #define __DRI_GET_DRAWABLE_INFO_VERSION 1
513 struct __DRIgetDrawableInfoExtensionRec
{
517 * This function is used to get information about the position, size, and
518 * clip rects of a drawable.
520 GLboolean (* getDrawableInfo
) ( __DRIdrawable
*drawable
,
521 unsigned int * index
, unsigned int * stamp
,
522 int * x
, int * y
, int * width
, int * height
,
523 int * numClipRects
, drm_clip_rect_t
** pClipRects
,
524 int * backX
, int * backY
,
525 int * numBackClipRects
, drm_clip_rect_t
** pBackClipRects
,
526 void *loaderPrivate
);
530 * Callback to get system time for media stream counter extensions.
532 #define __DRI_SYSTEM_TIME "DRI_SystemTime"
533 #define __DRI_SYSTEM_TIME_VERSION 1
534 struct __DRIsystemTimeExtensionRec
{
538 * Get the 64-bit unadjusted system time (UST).
540 int (*getUST
)(int64_t * ust
);
543 * Get the media stream counter (MSC) rate.
545 * Matching the definition in GLX_OML_sync_control, this function returns
546 * the rate of the "media stream counter". In practical terms, this is
547 * the frame refresh rate of the display.
549 GLboolean (*getMSCRate
)(__DRIdrawable
*draw
,
550 int32_t * numerator
, int32_t * denominator
,
551 void *loaderPrivate
);
557 #define __DRI_DAMAGE "DRI_Damage"
558 #define __DRI_DAMAGE_VERSION 1
559 struct __DRIdamageExtensionRec
{
563 * Reports areas of the given drawable which have been modified by the
566 * \param drawable which the drawing was done to.
567 * \param rects rectangles affected, with the drawable origin as the
569 * \param x X offset of the drawable within the screen (used in the
571 * \param y Y offset of the drawable within the screen.
572 * \param front_buffer boolean flag for whether the drawing to the
573 * drawable was actually done directly to the front buffer (instead
574 * of backing storage, for example)
575 * \param loaderPrivate the data passed in at createNewDrawable time
577 void (*reportDamage
)(__DRIdrawable
*draw
,
579 drm_clip_rect_t
*rects
, int num_rects
,
580 GLboolean front_buffer
,
581 void *loaderPrivate
);
584 #define __DRI_SWRAST_IMAGE_OP_DRAW 1
585 #define __DRI_SWRAST_IMAGE_OP_CLEAR 2
586 #define __DRI_SWRAST_IMAGE_OP_SWAP 3
589 * SWRast Loader extension.
591 #define __DRI_SWRAST_LOADER "DRI_SWRastLoader"
592 #define __DRI_SWRAST_LOADER_VERSION 5
593 struct __DRIswrastLoaderExtensionRec
{
597 * Drawable position and size
599 void (*getDrawableInfo
)(__DRIdrawable
*drawable
,
600 int *x
, int *y
, int *width
, int *height
,
601 void *loaderPrivate
);
604 * Put image to drawable
606 void (*putImage
)(__DRIdrawable
*drawable
, int op
,
607 int x
, int y
, int width
, int height
,
608 char *data
, void *loaderPrivate
);
611 * Get image from readable
613 void (*getImage
)(__DRIdrawable
*readable
,
614 int x
, int y
, int width
, int height
,
615 char *data
, void *loaderPrivate
);
618 * Put image to drawable
622 void (*putImage2
)(__DRIdrawable
*drawable
, int op
,
623 int x
, int y
, int width
, int height
, int stride
,
624 char *data
, void *loaderPrivate
);
627 * Put image to drawable
631 void (*getImage2
)(__DRIdrawable
*readable
,
632 int x
, int y
, int width
, int height
, int stride
,
633 char *data
, void *loaderPrivate
);
636 * Put shm image to drawable
640 void (*putImageShm
)(__DRIdrawable
*drawable
, int op
,
641 int x
, int y
, int width
, int height
, int stride
,
642 int shmid
, char *shmaddr
, unsigned offset
,
643 void *loaderPrivate
);
645 * Get shm image from readable
649 void (*getImageShm
)(__DRIdrawable
*readable
,
650 int x
, int y
, int width
, int height
,
651 int shmid
, void *loaderPrivate
);
654 * Put shm image to drawable (v2)
656 * The original version fixes srcx/y to 0, and expected
657 * the offset to be adjusted. This version allows src x,y
658 * to not be included in the offset. This is needed to
659 * avoid certain overflow checks in the X server, that
660 * result in lost rendering.
664 void (*putImageShm2
)(__DRIdrawable
*drawable
, int op
,
666 int width
, int height
, int stride
,
667 int shmid
, char *shmaddr
, unsigned offset
,
668 void *loaderPrivate
);
672 * Invalidate loader extension. The presence of this extension
673 * indicates to the DRI driver that the loader will call invalidate in
674 * the __DRI2_FLUSH extension, whenever the needs to query for new
675 * buffers. This means that the DRI driver can drop the polling in
678 * The extension doesn't provide any functionality, it's only use to
679 * indicate to the driver that it can use the new semantics. A DRI
680 * driver can use this to switch between the different semantics or
681 * just refuse to initialize if this extension isn't present.
683 #define __DRI_USE_INVALIDATE "DRI_UseInvalidate"
684 #define __DRI_USE_INVALIDATE_VERSION 1
686 typedef struct __DRIuseInvalidateExtensionRec __DRIuseInvalidateExtension
;
687 struct __DRIuseInvalidateExtensionRec
{
692 * The remaining extensions describe driver extensions, immediately
693 * available interfaces provided by the driver. To start using the
694 * driver, dlsym() for the __DRI_DRIVER_EXTENSIONS symbol and look for
695 * the extension you need in the array.
697 #define __DRI_DRIVER_EXTENSIONS "__driDriverExtensions"
700 * This symbol replaces the __DRI_DRIVER_EXTENSIONS symbol, and will be
701 * suffixed by "_drivername", allowing multiple drivers to be built into one
702 * library, and also giving the driver the chance to return a variable driver
703 * extensions struct depending on the driver name being loaded or any other
706 * The function prototype is:
708 * const __DRIextension **__driDriverGetExtensions_drivername(void);
710 #define __DRI_DRIVER_GET_EXTENSIONS "__driDriverGetExtensions"
713 * Tokens for __DRIconfig attribs. A number of attributes defined by
714 * GLX or EGL standards are not in the table, as they must be provided
715 * by the loader. For example, FBConfig ID or visual ID, drawable type.
718 #define __DRI_ATTRIB_BUFFER_SIZE 1
719 #define __DRI_ATTRIB_LEVEL 2
720 #define __DRI_ATTRIB_RED_SIZE 3
721 #define __DRI_ATTRIB_GREEN_SIZE 4
722 #define __DRI_ATTRIB_BLUE_SIZE 5
723 #define __DRI_ATTRIB_LUMINANCE_SIZE 6
724 #define __DRI_ATTRIB_ALPHA_SIZE 7
725 #define __DRI_ATTRIB_ALPHA_MASK_SIZE 8
726 #define __DRI_ATTRIB_DEPTH_SIZE 9
727 #define __DRI_ATTRIB_STENCIL_SIZE 10
728 #define __DRI_ATTRIB_ACCUM_RED_SIZE 11
729 #define __DRI_ATTRIB_ACCUM_GREEN_SIZE 12
730 #define __DRI_ATTRIB_ACCUM_BLUE_SIZE 13
731 #define __DRI_ATTRIB_ACCUM_ALPHA_SIZE 14
732 #define __DRI_ATTRIB_SAMPLE_BUFFERS 15
733 #define __DRI_ATTRIB_SAMPLES 16
734 #define __DRI_ATTRIB_RENDER_TYPE 17
735 #define __DRI_ATTRIB_CONFIG_CAVEAT 18
736 #define __DRI_ATTRIB_CONFORMANT 19
737 #define __DRI_ATTRIB_DOUBLE_BUFFER 20
738 #define __DRI_ATTRIB_STEREO 21
739 #define __DRI_ATTRIB_AUX_BUFFERS 22
740 #define __DRI_ATTRIB_TRANSPARENT_TYPE 23
741 #define __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE 24
742 #define __DRI_ATTRIB_TRANSPARENT_RED_VALUE 25
743 #define __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE 26
744 #define __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE 27
745 #define __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE 28
746 #define __DRI_ATTRIB_FLOAT_MODE 29
747 #define __DRI_ATTRIB_RED_MASK 30
748 #define __DRI_ATTRIB_GREEN_MASK 31
749 #define __DRI_ATTRIB_BLUE_MASK 32
750 #define __DRI_ATTRIB_ALPHA_MASK 33
751 #define __DRI_ATTRIB_MAX_PBUFFER_WIDTH 34
752 #define __DRI_ATTRIB_MAX_PBUFFER_HEIGHT 35
753 #define __DRI_ATTRIB_MAX_PBUFFER_PIXELS 36
754 #define __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH 37
755 #define __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT 38
756 #define __DRI_ATTRIB_VISUAL_SELECT_GROUP 39
757 #define __DRI_ATTRIB_SWAP_METHOD 40
758 #define __DRI_ATTRIB_MAX_SWAP_INTERVAL 41
759 #define __DRI_ATTRIB_MIN_SWAP_INTERVAL 42
760 #define __DRI_ATTRIB_BIND_TO_TEXTURE_RGB 43
761 #define __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA 44
762 #define __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE 45
763 #define __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS 46
764 #define __DRI_ATTRIB_YINVERTED 47
765 #define __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE 48
766 #define __DRI_ATTRIB_MUTABLE_RENDER_BUFFER 49 /* EGL_MUTABLE_RENDER_BUFFER_BIT_KHR */
767 #define __DRI_ATTRIB_MAX 50
769 /* __DRI_ATTRIB_RENDER_TYPE */
770 #define __DRI_ATTRIB_RGBA_BIT 0x01
771 #define __DRI_ATTRIB_COLOR_INDEX_BIT 0x02
772 #define __DRI_ATTRIB_LUMINANCE_BIT 0x04
773 #define __DRI_ATTRIB_FLOAT_BIT 0x08
774 #define __DRI_ATTRIB_UNSIGNED_FLOAT_BIT 0x10
776 /* __DRI_ATTRIB_CONFIG_CAVEAT */
777 #define __DRI_ATTRIB_SLOW_BIT 0x01
778 #define __DRI_ATTRIB_NON_CONFORMANT_CONFIG 0x02
780 /* __DRI_ATTRIB_TRANSPARENT_TYPE */
781 #define __DRI_ATTRIB_TRANSPARENT_RGB 0x00
782 #define __DRI_ATTRIB_TRANSPARENT_INDEX 0x01
784 /* __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS */
785 #define __DRI_ATTRIB_TEXTURE_1D_BIT 0x01
786 #define __DRI_ATTRIB_TEXTURE_2D_BIT 0x02
787 #define __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT 0x04
789 /* __DRI_ATTRIB_SWAP_METHOD */
790 /* Note that with the exception of __DRI_ATTRIB_SWAP_NONE, we need to define
791 * the same tokens as GLX. This is because old and current X servers will
792 * transmit the driconf value grabbed from the AIGLX driver untranslated as
793 * the GLX fbconfig value. __DRI_ATTRIB_SWAP_NONE is only used by dri drivers
794 * to signal to the dri core that the driconfig is single-buffer.
796 #define __DRI_ATTRIB_SWAP_NONE 0x0000
797 #define __DRI_ATTRIB_SWAP_EXCHANGE 0x8061
798 #define __DRI_ATTRIB_SWAP_COPY 0x8062
799 #define __DRI_ATTRIB_SWAP_UNDEFINED 0x8063
802 * This extension defines the core DRI functionality.
804 * Version >= 2 indicates that getConfigAttrib with __DRI_ATTRIB_SWAP_METHOD
805 * returns a reliable value.
807 #define __DRI_CORE "DRI_Core"
808 #define __DRI_CORE_VERSION 2
810 struct __DRIcoreExtensionRec
{
813 __DRIscreen
*(*createNewScreen
)(int screen
, int fd
,
814 unsigned int sarea_handle
,
815 const __DRIextension
**extensions
,
816 const __DRIconfig
***driverConfigs
,
817 void *loaderPrivate
);
819 void (*destroyScreen
)(__DRIscreen
*screen
);
821 const __DRIextension
**(*getExtensions
)(__DRIscreen
*screen
);
823 int (*getConfigAttrib
)(const __DRIconfig
*config
,
825 unsigned int *value
);
827 int (*indexConfigAttrib
)(const __DRIconfig
*config
, int index
,
828 unsigned int *attrib
, unsigned int *value
);
830 __DRIdrawable
*(*createNewDrawable
)(__DRIscreen
*screen
,
831 const __DRIconfig
*config
,
832 unsigned int drawable_id
,
834 void *loaderPrivate
);
836 void (*destroyDrawable
)(__DRIdrawable
*drawable
);
838 void (*swapBuffers
)(__DRIdrawable
*drawable
);
840 __DRIcontext
*(*createNewContext
)(__DRIscreen
*screen
,
841 const __DRIconfig
*config
,
842 __DRIcontext
*shared
,
843 void *loaderPrivate
);
845 int (*copyContext
)(__DRIcontext
*dest
,
849 void (*destroyContext
)(__DRIcontext
*context
);
851 int (*bindContext
)(__DRIcontext
*ctx
,
852 __DRIdrawable
*pdraw
,
853 __DRIdrawable
*pread
);
855 int (*unbindContext
)(__DRIcontext
*ctx
);
859 * Stored version of some component (i.e., server-side DRI module, kernel-side
863 * There are several data structures that explicitly store a major version,
864 * minor version, and patch level. These structures should be modified to
865 * have a \c __DRIversionRec instead.
867 struct __DRIversionRec
{
868 int major
; /**< Major version number. */
869 int minor
; /**< Minor version number. */
870 int patch
; /**< Patch-level. */
874 * Framebuffer information record. Used by libGL to communicate information
875 * about the framebuffer to the driver's \c __driCreateNewScreen function.
877 * In XFree86, most of this information is derrived from data returned by
878 * calling \c XF86DRIGetDeviceInfo.
880 * \sa XF86DRIGetDeviceInfo __DRIdisplayRec::createNewScreen
881 * __driUtilCreateNewScreen CallCreateNewScreen
883 * \bug This structure could be better named.
885 struct __DRIframebufferRec
{
886 unsigned char *base
; /**< Framebuffer base address in the CPU's
887 * address space. This value is calculated by
888 * calling \c drmMap on the framebuffer handle
889 * returned by \c XF86DRIGetDeviceInfo (or a
892 int size
; /**< Framebuffer size, in bytes. */
893 int stride
; /**< Number of bytes from one line to the next. */
894 int width
; /**< Pixel width of the framebuffer. */
895 int height
; /**< Pixel height of the framebuffer. */
896 int dev_priv_size
; /**< Size of the driver's dev-priv structure. */
897 void *dev_priv
; /**< Pointer to the driver's dev-priv structure. */
902 * This extension provides alternative screen, drawable and context
903 * constructors for legacy DRI functionality. This is used in
904 * conjunction with the core extension.
906 #define __DRI_LEGACY "DRI_Legacy"
907 #define __DRI_LEGACY_VERSION 1
909 struct __DRIlegacyExtensionRec
{
912 __DRIscreen
*(*createNewScreen
)(int screen
,
913 const __DRIversion
*ddx_version
,
914 const __DRIversion
*dri_version
,
915 const __DRIversion
*drm_version
,
916 const __DRIframebuffer
*frame_buffer
,
917 void *pSAREA
, int fd
,
918 const __DRIextension
**extensions
,
919 const __DRIconfig
***driver_configs
,
920 void *loaderPrivate
);
922 __DRIdrawable
*(*createNewDrawable
)(__DRIscreen
*screen
,
923 const __DRIconfig
*config
,
924 drm_drawable_t hwDrawable
,
925 int renderType
, const int *attrs
,
926 void *loaderPrivate
);
928 __DRIcontext
*(*createNewContext
)(__DRIscreen
*screen
,
929 const __DRIconfig
*config
,
931 __DRIcontext
*shared
,
932 drm_context_t hwContext
,
933 void *loaderPrivate
);
937 * This extension provides alternative screen, drawable and context
938 * constructors for swrast DRI functionality. This is used in
939 * conjunction with the core extension.
941 #define __DRI_SWRAST "DRI_SWRast"
942 #define __DRI_SWRAST_VERSION 4
944 struct __DRIswrastExtensionRec
{
947 __DRIscreen
*(*createNewScreen
)(int screen
,
948 const __DRIextension
**extensions
,
949 const __DRIconfig
***driver_configs
,
950 void *loaderPrivate
);
952 __DRIdrawable
*(*createNewDrawable
)(__DRIscreen
*screen
,
953 const __DRIconfig
*config
,
954 void *loaderPrivate
);
956 /* Since version 2 */
957 __DRIcontext
*(*createNewContextForAPI
)(__DRIscreen
*screen
,
959 const __DRIconfig
*config
,
960 __DRIcontext
*shared
,
964 * Create a context for a particular API with a set of attributes
968 * \sa __DRIdri2ExtensionRec::createContextAttribs
970 __DRIcontext
*(*createContextAttribs
)(__DRIscreen
*screen
,
972 const __DRIconfig
*config
,
973 __DRIcontext
*shared
,
974 unsigned num_attribs
,
975 const uint32_t *attribs
,
977 void *loaderPrivate
);
980 * createNewScreen() with the driver extensions passed in.
984 __DRIscreen
*(*createNewScreen2
)(int screen
,
985 const __DRIextension
**loader_extensions
,
986 const __DRIextension
**driver_extensions
,
987 const __DRIconfig
***driver_configs
,
988 void *loaderPrivate
);
992 /** Common DRI function definitions, shared among DRI2 and Image extensions
995 typedef __DRIscreen
*
996 (*__DRIcreateNewScreen2Func
)(int screen
, int fd
,
997 const __DRIextension
**extensions
,
998 const __DRIextension
**driver_extensions
,
999 const __DRIconfig
***driver_configs
,
1000 void *loaderPrivate
);
1002 typedef __DRIdrawable
*
1003 (*__DRIcreateNewDrawableFunc
)(__DRIscreen
*screen
,
1004 const __DRIconfig
*config
,
1005 void *loaderPrivate
);
1007 typedef __DRIcontext
*
1008 (*__DRIcreateContextAttribsFunc
)(__DRIscreen
*screen
,
1010 const __DRIconfig
*config
,
1011 __DRIcontext
*shared
,
1012 unsigned num_attribs
,
1013 const uint32_t *attribs
,
1015 void *loaderPrivate
);
1017 typedef unsigned int
1018 (*__DRIgetAPIMaskFunc
)(__DRIscreen
*screen
);
1021 * DRI2 Loader extension.
1023 #define __DRI_BUFFER_FRONT_LEFT 0
1024 #define __DRI_BUFFER_BACK_LEFT 1
1025 #define __DRI_BUFFER_FRONT_RIGHT 2
1026 #define __DRI_BUFFER_BACK_RIGHT 3
1027 #define __DRI_BUFFER_DEPTH 4
1028 #define __DRI_BUFFER_STENCIL 5
1029 #define __DRI_BUFFER_ACCUM 6
1030 #define __DRI_BUFFER_FAKE_FRONT_LEFT 7
1031 #define __DRI_BUFFER_FAKE_FRONT_RIGHT 8
1032 #define __DRI_BUFFER_DEPTH_STENCIL 9 /**< Only available with DRI2 1.1 */
1033 #define __DRI_BUFFER_HIZ 10
1035 /* Inofficial and for internal use. Increase when adding a new buffer token. */
1036 #define __DRI_BUFFER_COUNT 11
1038 struct __DRIbufferRec
{
1039 unsigned int attachment
;
1046 #define __DRI_DRI2_LOADER "DRI_DRI2Loader"
1047 #define __DRI_DRI2_LOADER_VERSION 4
1049 enum dri_loader_cap
{
1050 /* Whether the loader handles RGBA channel ordering correctly. If not,
1051 * only BGRA ordering can be exposed.
1053 DRI_LOADER_CAP_RGBA_ORDERING
,
1056 struct __DRIdri2LoaderExtensionRec
{
1057 __DRIextension base
;
1059 __DRIbuffer
*(*getBuffers
)(__DRIdrawable
*driDrawable
,
1060 int *width
, int *height
,
1061 unsigned int *attachments
, int count
,
1062 int *out_count
, void *loaderPrivate
);
1065 * Flush pending front-buffer rendering
1067 * Any rendering that has been performed to the
1068 * \c __DRI_BUFFER_FAKE_FRONT_LEFT will be flushed to the
1069 * \c __DRI_BUFFER_FRONT_LEFT.
1071 * \param driDrawable Drawable whose front-buffer is to be flushed
1072 * \param loaderPrivate Loader's private data that was previously passed
1073 * into __DRIdri2ExtensionRec::createNewDrawable
1077 void (*flushFrontBuffer
)(__DRIdrawable
*driDrawable
, void *loaderPrivate
);
1081 * Get list of buffers from the server
1083 * Gets a list of buffer for the specified set of attachments. Unlike
1084 * \c ::getBuffers, this function takes a list of attachments paired with
1085 * opaque \c unsigned \c int value describing the format of the buffer.
1086 * It is the responsibility of the caller to know what the service that
1087 * allocates the buffers will expect to receive for the format.
1089 * \param driDrawable Drawable whose buffers are being queried.
1090 * \param width Output where the width of the buffers is stored.
1091 * \param height Output where the height of the buffers is stored.
1092 * \param attachments List of pairs of attachment ID and opaque format
1093 * requested for the drawable.
1094 * \param count Number of attachment / format pairs stored in
1096 * \param loaderPrivate Loader's private data that was previously passed
1097 * into __DRIdri2ExtensionRec::createNewDrawable.
1101 __DRIbuffer
*(*getBuffersWithFormat
)(__DRIdrawable
*driDrawable
,
1102 int *width
, int *height
,
1103 unsigned int *attachments
, int count
,
1104 int *out_count
, void *loaderPrivate
);
1107 * Return a loader capability value. If the loader doesn't know the enum,
1110 * \param loaderPrivate The last parameter of createNewScreen or
1112 * \param cap See the enum.
1116 unsigned (*getCapability
)(void *loaderPrivate
, enum dri_loader_cap cap
);
1120 * This extension provides alternative screen, drawable and context
1121 * constructors for DRI2.
1123 #define __DRI_DRI2 "DRI_DRI2"
1124 #define __DRI_DRI2_VERSION 4
1126 #define __DRI_API_OPENGL 0 /**< OpenGL compatibility profile */
1127 #define __DRI_API_GLES 1 /**< OpenGL ES 1.x */
1128 #define __DRI_API_GLES2 2 /**< OpenGL ES 2.x */
1129 #define __DRI_API_OPENGL_CORE 3 /**< OpenGL 3.2+ core profile */
1130 #define __DRI_API_GLES3 4 /**< OpenGL ES 3.x */
1132 #define __DRI_CTX_ATTRIB_MAJOR_VERSION 0
1133 #define __DRI_CTX_ATTRIB_MINOR_VERSION 1
1134 #define __DRI_CTX_ATTRIB_FLAGS 2
1137 * \requires __DRI2_ROBUSTNESS.
1139 #define __DRI_CTX_ATTRIB_RESET_STRATEGY 3
1141 #define __DRI_CTX_FLAG_DEBUG 0x00000001
1142 #define __DRI_CTX_FLAG_FORWARD_COMPATIBLE 0x00000002
1145 * \requires __DRI2_ROBUSTNESS.
1147 #define __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS 0x00000004
1150 * \requires __DRI2_NO_ERROR.
1153 #define __DRI_CTX_FLAG_NO_ERROR 0x00000008
1156 * \name Context reset strategies.
1159 #define __DRI_CTX_RESET_NO_NOTIFICATION 0
1160 #define __DRI_CTX_RESET_LOSE_CONTEXT 1
1163 #define __DRI_CTX_ATTRIB_PRIORITY 4
1165 #define __DRI_CTX_PRIORITY_LOW 0
1166 #define __DRI_CTX_PRIORITY_MEDIUM 1
1167 #define __DRI_CTX_PRIORITY_HIGH 2
1170 * \name Context release behaviors.
1173 #define __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR 5
1175 #define __DRI_CTX_RELEASE_BEHAVIOR_NONE 0
1176 #define __DRI_CTX_RELEASE_BEHAVIOR_FLUSH 1
1180 * \name Reasons that __DRIdri2Extension::createContextAttribs might fail
1184 #define __DRI_CTX_ERROR_SUCCESS 0
1186 /** Memory allocation failure */
1187 #define __DRI_CTX_ERROR_NO_MEMORY 1
1189 /** Client requested an API (e.g., OpenGL ES 2.0) that the driver can't do. */
1190 #define __DRI_CTX_ERROR_BAD_API 2
1192 /** Client requested an API version that the driver can't do. */
1193 #define __DRI_CTX_ERROR_BAD_VERSION 3
1195 /** Client requested a flag or combination of flags the driver can't do. */
1196 #define __DRI_CTX_ERROR_BAD_FLAG 4
1198 /** Client requested an attribute the driver doesn't understand. */
1199 #define __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE 5
1201 /** Client requested a flag the driver doesn't understand. */
1202 #define __DRI_CTX_ERROR_UNKNOWN_FLAG 6
1205 struct __DRIdri2ExtensionRec
{
1206 __DRIextension base
;
1208 __DRIscreen
*(*createNewScreen
)(int screen
, int fd
,
1209 const __DRIextension
**extensions
,
1210 const __DRIconfig
***driver_configs
,
1211 void *loaderPrivate
);
1213 __DRIcreateNewDrawableFunc createNewDrawable
;
1214 __DRIcontext
*(*createNewContext
)(__DRIscreen
*screen
,
1215 const __DRIconfig
*config
,
1216 __DRIcontext
*shared
,
1217 void *loaderPrivate
);
1219 /* Since version 2 */
1220 __DRIgetAPIMaskFunc getAPIMask
;
1222 __DRIcontext
*(*createNewContextForAPI
)(__DRIscreen
*screen
,
1224 const __DRIconfig
*config
,
1225 __DRIcontext
*shared
,
1228 __DRIbuffer
*(*allocateBuffer
)(__DRIscreen
*screen
,
1229 unsigned int attachment
,
1230 unsigned int format
,
1233 void (*releaseBuffer
)(__DRIscreen
*screen
,
1234 __DRIbuffer
*buffer
);
1237 * Create a context for a particular API with a set of attributes
1241 * \sa __DRIswrastExtensionRec::createContextAttribs
1243 __DRIcreateContextAttribsFunc createContextAttribs
;
1246 * createNewScreen with the driver's extension list passed in.
1250 __DRIcreateNewScreen2Func createNewScreen2
;
1255 * This extension provides functionality to enable various EGLImage
1258 #define __DRI_IMAGE "DRI_IMAGE"
1259 #define __DRI_IMAGE_VERSION 17
1262 * These formats correspond to the similarly named MESA_FORMAT_*
1263 * tokens, except in the native endian of the CPU. For example, on
1264 * little endian __DRI_IMAGE_FORMAT_XRGB8888 corresponds to
1265 * MESA_FORMAT_XRGB8888, but MESA_FORMAT_XRGB8888_REV on big endian.
1267 * __DRI_IMAGE_FORMAT_NONE is for images that aren't directly usable
1268 * by the driver (YUV planar formats) but serve as a base image for
1269 * creating sub-images for the different planes within the image.
1271 * R8, GR88 and NONE should not be used with createImageFromName or
1272 * createImage, and are returned by query from sub images created with
1273 * createImageFromNames (NONE, see above) and fromPlane (R8 & GR88).
1275 #define __DRI_IMAGE_FORMAT_RGB565 0x1001
1276 #define __DRI_IMAGE_FORMAT_XRGB8888 0x1002
1277 #define __DRI_IMAGE_FORMAT_ARGB8888 0x1003
1278 #define __DRI_IMAGE_FORMAT_ABGR8888 0x1004
1279 #define __DRI_IMAGE_FORMAT_XBGR8888 0x1005
1280 #define __DRI_IMAGE_FORMAT_R8 0x1006 /* Since version 5 */
1281 #define __DRI_IMAGE_FORMAT_GR88 0x1007
1282 #define __DRI_IMAGE_FORMAT_NONE 0x1008
1283 #define __DRI_IMAGE_FORMAT_XRGB2101010 0x1009
1284 #define __DRI_IMAGE_FORMAT_ARGB2101010 0x100a
1285 #define __DRI_IMAGE_FORMAT_SARGB8 0x100b
1286 #define __DRI_IMAGE_FORMAT_ARGB1555 0x100c
1287 #define __DRI_IMAGE_FORMAT_R16 0x100d
1288 #define __DRI_IMAGE_FORMAT_GR1616 0x100e
1289 #define __DRI_IMAGE_FORMAT_YUYV 0x100f
1290 #define __DRI_IMAGE_FORMAT_XBGR2101010 0x1010
1291 #define __DRI_IMAGE_FORMAT_ABGR2101010 0x1011
1292 #define __DRI_IMAGE_FORMAT_SABGR8 0x1012
1294 #define __DRI_IMAGE_USE_SHARE 0x0001
1295 #define __DRI_IMAGE_USE_SCANOUT 0x0002
1296 #define __DRI_IMAGE_USE_CURSOR 0x0004 /* Deprecated */
1297 #define __DRI_IMAGE_USE_LINEAR 0x0008
1298 /* The buffer will only be read by an external process after SwapBuffers,
1299 * in contrary to gbm buffers, front buffers and fake front buffers, which
1300 * could be read after a flush."
1302 #define __DRI_IMAGE_USE_BACKBUFFER 0x0010
1305 #define __DRI_IMAGE_TRANSFER_READ 0x1
1306 #define __DRI_IMAGE_TRANSFER_WRITE 0x2
1307 #define __DRI_IMAGE_TRANSFER_READ_WRITE \
1308 (__DRI_IMAGE_TRANSFER_READ | __DRI_IMAGE_TRANSFER_WRITE)
1311 * Four CC formats that matches with WL_DRM_FORMAT_* from wayland_drm.h,
1312 * GBM_FORMAT_* from gbm.h, and DRM_FORMAT_* from drm_fourcc.h. Used with
1313 * createImageFromNames.
1318 #define __DRI_IMAGE_FOURCC_R8 0x20203852
1319 #define __DRI_IMAGE_FOURCC_GR88 0x38385247
1320 #define __DRI_IMAGE_FOURCC_ARGB1555 0x35315241
1321 #define __DRI_IMAGE_FOURCC_R16 0x20363152
1322 #define __DRI_IMAGE_FOURCC_GR1616 0x32335247
1323 #define __DRI_IMAGE_FOURCC_RGB565 0x36314752
1324 #define __DRI_IMAGE_FOURCC_ARGB8888 0x34325241
1325 #define __DRI_IMAGE_FOURCC_XRGB8888 0x34325258
1326 #define __DRI_IMAGE_FOURCC_ABGR8888 0x34324241
1327 #define __DRI_IMAGE_FOURCC_XBGR8888 0x34324258
1328 #define __DRI_IMAGE_FOURCC_SARGB8888 0x83324258
1329 #define __DRI_IMAGE_FOURCC_SABGR8888 0x84324258
1330 #define __DRI_IMAGE_FOURCC_ARGB2101010 0x30335241
1331 #define __DRI_IMAGE_FOURCC_XRGB2101010 0x30335258
1332 #define __DRI_IMAGE_FOURCC_ABGR2101010 0x30334241
1333 #define __DRI_IMAGE_FOURCC_XBGR2101010 0x30334258
1334 #define __DRI_IMAGE_FOURCC_RGBA1010102 0x30334152
1335 #define __DRI_IMAGE_FOURCC_RGBX1010102 0x30335852
1336 #define __DRI_IMAGE_FOURCC_BGRA1010102 0x30334142
1337 #define __DRI_IMAGE_FOURCC_BGRX1010102 0x30335842
1338 #define __DRI_IMAGE_FOURCC_YUV410 0x39565559
1339 #define __DRI_IMAGE_FOURCC_YUV411 0x31315559
1340 #define __DRI_IMAGE_FOURCC_YUV420 0x32315559
1341 #define __DRI_IMAGE_FOURCC_YUV422 0x36315559
1342 #define __DRI_IMAGE_FOURCC_YUV444 0x34325559
1343 #define __DRI_IMAGE_FOURCC_NV12 0x3231564e
1344 #define __DRI_IMAGE_FOURCC_NV16 0x3631564e
1345 #define __DRI_IMAGE_FOURCC_YUYV 0x56595559
1346 #define __DRI_IMAGE_FOURCC_UYVY 0x59565955
1347 #define __DRI_IMAGE_FOURCC_AYUV 0x56555941
1349 #define __DRI_IMAGE_FOURCC_YVU410 0x39555659
1350 #define __DRI_IMAGE_FOURCC_YVU411 0x31315659
1351 #define __DRI_IMAGE_FOURCC_YVU420 0x32315659
1352 #define __DRI_IMAGE_FOURCC_YVU422 0x36315659
1353 #define __DRI_IMAGE_FOURCC_YVU444 0x34325659
1356 * Queryable on images created by createImageFromNames.
1358 * RGB and RGBA are may be usable directly as images but its still
1359 * recommended to call fromPlanar with plane == 0.
1361 * Y_U_V, Y_UV,Y_XUXV and Y_UXVX all requires call to fromPlanar to create
1362 * usable sub-images, sampling from images return raw YUV data and
1363 * color conversion needs to be done in the shader.
1368 #define __DRI_IMAGE_COMPONENTS_RGB 0x3001
1369 #define __DRI_IMAGE_COMPONENTS_RGBA 0x3002
1370 #define __DRI_IMAGE_COMPONENTS_Y_U_V 0x3003
1371 #define __DRI_IMAGE_COMPONENTS_Y_UV 0x3004
1372 #define __DRI_IMAGE_COMPONENTS_Y_XUXV 0x3005
1373 #define __DRI_IMAGE_COMPONENTS_Y_UXVX 0x3008
1374 #define __DRI_IMAGE_COMPONENTS_AYUV 0x3009
1375 #define __DRI_IMAGE_COMPONENTS_R 0x3006
1376 #define __DRI_IMAGE_COMPONENTS_RG 0x3007
1380 * queryImage attributes
1383 #define __DRI_IMAGE_ATTRIB_STRIDE 0x2000
1384 #define __DRI_IMAGE_ATTRIB_HANDLE 0x2001
1385 #define __DRI_IMAGE_ATTRIB_NAME 0x2002
1386 #define __DRI_IMAGE_ATTRIB_FORMAT 0x2003 /* available in versions 3+ */
1387 #define __DRI_IMAGE_ATTRIB_WIDTH 0x2004 /* available in versions 4+ */
1388 #define __DRI_IMAGE_ATTRIB_HEIGHT 0x2005
1389 #define __DRI_IMAGE_ATTRIB_COMPONENTS 0x2006 /* available in versions 5+ */
1390 #define __DRI_IMAGE_ATTRIB_FD 0x2007 /* available in versions
1391 * 7+. Each query will return a
1393 #define __DRI_IMAGE_ATTRIB_FOURCC 0x2008 /* available in versions 11 */
1394 #define __DRI_IMAGE_ATTRIB_NUM_PLANES 0x2009 /* available in versions 11 */
1396 #define __DRI_IMAGE_ATTRIB_OFFSET 0x200A /* available in versions 13 */
1397 #define __DRI_IMAGE_ATTRIB_MODIFIER_LOWER 0x200B /* available in versions 14 */
1398 #define __DRI_IMAGE_ATTRIB_MODIFIER_UPPER 0x200C /* available in versions 14 */
1400 enum __DRIYUVColorSpace
{
1401 __DRI_YUV_COLOR_SPACE_UNDEFINED
= 0,
1402 __DRI_YUV_COLOR_SPACE_ITU_REC601
= 0x327F,
1403 __DRI_YUV_COLOR_SPACE_ITU_REC709
= 0x3280,
1404 __DRI_YUV_COLOR_SPACE_ITU_REC2020
= 0x3281
1407 enum __DRISampleRange
{
1408 __DRI_YUV_RANGE_UNDEFINED
= 0,
1409 __DRI_YUV_FULL_RANGE
= 0x3282,
1410 __DRI_YUV_NARROW_RANGE
= 0x3283
1413 enum __DRIChromaSiting
{
1414 __DRI_YUV_CHROMA_SITING_UNDEFINED
= 0,
1415 __DRI_YUV_CHROMA_SITING_0
= 0x3284,
1416 __DRI_YUV_CHROMA_SITING_0_5
= 0x3285
1420 * \name Reasons that __DRIimageExtensionRec::createImageFromTexture or
1421 * __DRIimageExtensionRec::createImageFromDmaBufs might fail
1425 #define __DRI_IMAGE_ERROR_SUCCESS 0
1427 /** Memory allocation failure */
1428 #define __DRI_IMAGE_ERROR_BAD_ALLOC 1
1430 /** Client requested an invalid attribute */
1431 #define __DRI_IMAGE_ERROR_BAD_MATCH 2
1433 /** Client requested an invalid texture object */
1434 #define __DRI_IMAGE_ERROR_BAD_PARAMETER 3
1436 /** Client requested an invalid pitch and/or offset */
1437 #define __DRI_IMAGE_ERROR_BAD_ACCESS 4
1441 * \name Capabilities that might be returned by __DRIimageExtensionRec::getCapabilities
1444 #define __DRI_IMAGE_CAP_GLOBAL_NAMES 1
1451 #define __BLIT_FLAG_FLUSH 0x0001
1452 #define __BLIT_FLAG_FINISH 0x0002
1455 * queryDmaBufFormatModifierAttribs attributes
1458 /* Available in version 16 */
1459 #define __DRI_IMAGE_FORMAT_MODIFIER_ATTRIB_PLANE_COUNT 0x0001
1461 typedef struct __DRIimageRec __DRIimage
;
1462 typedef struct __DRIimageExtensionRec __DRIimageExtension
;
1463 struct __DRIimageExtensionRec
{
1464 __DRIextension base
;
1466 __DRIimage
*(*createImageFromName
)(__DRIscreen
*screen
,
1467 int width
, int height
, int format
,
1468 int name
, int pitch
,
1469 void *loaderPrivate
);
1471 /* Deprecated since version 17; see createImageFromRenderbuffer2 */
1472 __DRIimage
*(*createImageFromRenderbuffer
)(__DRIcontext
*context
,
1474 void *loaderPrivate
);
1476 void (*destroyImage
)(__DRIimage
*image
);
1478 __DRIimage
*(*createImage
)(__DRIscreen
*screen
,
1479 int width
, int height
, int format
,
1481 void *loaderPrivate
);
1483 GLboolean (*queryImage
)(__DRIimage
*image
, int attrib
, int *value
);
1486 * The new __DRIimage will share the content with the old one, see dup(2).
1488 __DRIimage
*(*dupImage
)(__DRIimage
*image
, void *loaderPrivate
);
1491 * Validate that a __DRIimage can be used a certain way.
1495 GLboolean (*validateUsage
)(__DRIimage
*image
, unsigned int use
);
1498 * Unlike createImageFromName __DRI_IMAGE_FORMAT is not but instead
1499 * __DRI_IMAGE_FOURCC and strides are in bytes not pixels. Stride is
1500 * also per block and not per pixel (for non-RGB, see gallium blocks).
1504 __DRIimage
*(*createImageFromNames
)(__DRIscreen
*screen
,
1505 int width
, int height
, int fourcc
,
1506 int *names
, int num_names
,
1507 int *strides
, int *offsets
,
1508 void *loaderPrivate
);
1511 * Create an image out of a sub-region of a parent image. This
1512 * entry point lets us create individual __DRIimages for different
1513 * planes in a planar buffer (typically yuv), for example. While a
1514 * sub-image shares the underlying buffer object with the parent
1515 * image and other sibling sub-images, the life times of parent and
1516 * sub-images are not dependent. Destroying the parent or a
1517 * sub-image doesn't affect other images. The underlying buffer
1518 * object is free when no __DRIimage remains that references it.
1520 * Sub-images may overlap, but rendering to overlapping sub-images
1525 __DRIimage
*(*fromPlanar
)(__DRIimage
*image
, int plane
,
1526 void *loaderPrivate
);
1529 * Create image from texture.
1533 __DRIimage
*(*createImageFromTexture
)(__DRIcontext
*context
,
1539 void *loaderPrivate
);
1541 * Like createImageFromNames, but takes a prime fd instead.
1545 __DRIimage
*(*createImageFromFds
)(__DRIscreen
*screen
,
1546 int width
, int height
, int fourcc
,
1547 int *fds
, int num_fds
,
1548 int *strides
, int *offsets
,
1549 void *loaderPrivate
);
1552 * Like createImageFromFds, but takes additional attributes.
1554 * For EGL_EXT_image_dma_buf_import.
1558 __DRIimage
*(*createImageFromDmaBufs
)(__DRIscreen
*screen
,
1559 int width
, int height
, int fourcc
,
1560 int *fds
, int num_fds
,
1561 int *strides
, int *offsets
,
1562 enum __DRIYUVColorSpace color_space
,
1563 enum __DRISampleRange sample_range
,
1564 enum __DRIChromaSiting horiz_siting
,
1565 enum __DRIChromaSiting vert_siting
,
1567 void *loaderPrivate
);
1570 * Blit a part of a __DRIimage to another and flushes
1574 * __BLIT_FLAG_FLUSH: flush after the blit operation
1575 * __BLIT_FLAG_FINISH: flush and wait the blit finished
1579 void (*blitImage
)(__DRIcontext
*context
, __DRIimage
*dst
, __DRIimage
*src
,
1580 int dstx0
, int dsty0
, int dstwidth
, int dstheight
,
1581 int srcx0
, int srcy0
, int srcwidth
, int srcheight
,
1585 * Query for general capabilities of the driver that concern
1586 * buffer sharing and image importing.
1590 int (*getCapabilities
)(__DRIscreen
*screen
);
1593 * Returns a map of the specified region of a __DRIimage for the specified usage.
1595 * flags may include __DRI_IMAGE_TRANSFER_READ, which will populate the
1596 * mapping with the current buffer content. If __DRI_IMAGE_TRANSFER_READ
1597 * is not included in the flags, the buffer content at map time is
1598 * undefined. Users wanting to modify the mapping must include
1599 * __DRI_IMAGE_TRANSFER_WRITE; if __DRI_IMAGE_TRANSFER_WRITE is not
1600 * included, behaviour when writing the mapping is undefined.
1602 * Returns the byte stride in *stride, and an opaque pointer to data
1603 * tracking the mapping in **data, which must be passed to unmapImage().
1607 void *(*mapImage
)(__DRIcontext
*context
, __DRIimage
*image
,
1608 int x0
, int y0
, int width
, int height
,
1609 unsigned int flags
, int *stride
, void **data
);
1612 * Unmap a previously mapped __DRIimage
1616 void (*unmapImage
)(__DRIcontext
*context
, __DRIimage
*image
, void *data
);
1620 * Creates an image with implementation's favorite modifiers.
1622 * This acts like createImage except there is a list of modifiers passed in
1623 * which the implementation may selectively use to create the DRIimage. The
1624 * result should be the implementation selects one modifier (perhaps it would
1625 * hold on to a few and later pick).
1627 * The created image should be destroyed with destroyImage().
1629 * Returns the new DRIimage. The chosen modifier can be obtained later on
1630 * and passed back to things like the kernel's AddFB2 interface.
1632 * \sa __DRIimageRec::createImage
1636 __DRIimage
*(*createImageWithModifiers
)(__DRIscreen
*screen
,
1637 int width
, int height
, int format
,
1638 const uint64_t *modifiers
,
1639 const unsigned int modifier_count
,
1640 void *loaderPrivate
);
1643 * Like createImageFromDmaBufs, but takes also format modifiers.
1645 * For EGL_EXT_image_dma_buf_import_modifiers.
1649 __DRIimage
*(*createImageFromDmaBufs2
)(__DRIscreen
*screen
,
1650 int width
, int height
, int fourcc
,
1652 int *fds
, int num_fds
,
1653 int *strides
, int *offsets
,
1654 enum __DRIYUVColorSpace color_space
,
1655 enum __DRISampleRange sample_range
,
1656 enum __DRIChromaSiting horiz_siting
,
1657 enum __DRIChromaSiting vert_siting
,
1659 void *loaderPrivate
);
1662 * dmabuf format query to support EGL_EXT_image_dma_buf_import_modifiers.
1664 * \param max Maximum number of formats that can be accomodated into
1665 * \param formats. If zero, no formats are returned -
1666 * instead, the driver returns the total number of
1667 * supported dmabuf formats in \param count.
1668 * \param formats Buffer to fill formats into.
1669 * \param count Count of formats returned, or, total number of
1670 * supported formats in case \param max is zero.
1672 * Returns true on success.
1676 GLboolean (*queryDmaBufFormats
)(__DRIscreen
*screen
, int max
,
1677 int *formats
, int *count
);
1680 * dmabuf format modifier query for a given format to support
1681 * EGL_EXT_image_dma_buf_import_modifiers.
1683 * \param fourcc The format to query modifiers for. If this format
1684 * is not supported by the driver, return false.
1685 * \param max Maximum number of modifiers that can be accomodated in
1686 * \param modifiers. If zero, no modifiers are returned -
1687 * instead, the driver returns the total number of
1688 * modifiers for \param format in \param count.
1689 * \param modifiers Buffer to fill modifiers into.
1690 * \param count Count of the modifiers returned, or, total number of
1691 * supported modifiers for \param fourcc in case
1692 * \param max is zero.
1694 * Returns true upon success.
1698 GLboolean (*queryDmaBufModifiers
)(__DRIscreen
*screen
, int fourcc
,
1699 int max
, uint64_t *modifiers
,
1700 unsigned int *external_only
,
1704 * dmabuf format modifier attribute query for a given format and modifier.
1706 * \param fourcc The format to query. If this format is not supported by
1707 * the driver, return false.
1708 * \param modifier The modifier to query. If this format+modifier is not
1709 * supported by the driver, return false.
1710 * \param attrib The __DRI_IMAGE_FORMAT_MODIFIER_ATTRIB to query.
1711 * \param value A pointer to where to store the result of the query.
1713 * Returns true upon success.
1717 GLboolean (*queryDmaBufFormatModifierAttribs
)(__DRIscreen
*screen
,
1718 uint32_t fourcc
, uint64_t modifier
,
1719 int attrib
, uint64_t *value
);
1722 * Create a DRI image from the given renderbuffer.
1724 * \param context the current DRI context
1725 * \param renderbuffer the GL name of the renderbuffer
1726 * \param loaderPrivate for callbacks into the loader related to the image
1727 * \param error will be set to one of __DRI_IMAGE_ERROR_xxx
1728 * \return the newly created image on success, or NULL otherwise
1732 __DRIimage
*(*createImageFromRenderbuffer2
)(__DRIcontext
*context
,
1734 void *loaderPrivate
,
1740 * This extension must be implemented by the loader and passed to the
1741 * driver at screen creation time. The EGLImage entry points in the
1742 * various client APIs take opaque EGLImage handles and use this
1743 * extension to map them to a __DRIimage. At version 1, this
1744 * extensions allows mapping EGLImage pointers to __DRIimage pointers,
1745 * but future versions could support other EGLImage-like, opaque types
1746 * with new lookup functions.
1748 #define __DRI_IMAGE_LOOKUP "DRI_IMAGE_LOOKUP"
1749 #define __DRI_IMAGE_LOOKUP_VERSION 1
1751 typedef struct __DRIimageLookupExtensionRec __DRIimageLookupExtension
;
1752 struct __DRIimageLookupExtensionRec
{
1753 __DRIextension base
;
1755 __DRIimage
*(*lookupEGLImage
)(__DRIscreen
*screen
, void *image
,
1756 void *loaderPrivate
);
1760 * This extension allows for common DRI2 options
1762 #define __DRI2_CONFIG_QUERY "DRI_CONFIG_QUERY"
1763 #define __DRI2_CONFIG_QUERY_VERSION 1
1765 typedef struct __DRI2configQueryExtensionRec __DRI2configQueryExtension
;
1766 struct __DRI2configQueryExtensionRec
{
1767 __DRIextension base
;
1769 int (*configQueryb
)(__DRIscreen
*screen
, const char *var
, unsigned char *val
);
1770 int (*configQueryi
)(__DRIscreen
*screen
, const char *var
, int *val
);
1771 int (*configQueryf
)(__DRIscreen
*screen
, const char *var
, float *val
);
1775 * Robust context driver extension.
1777 * Existence of this extension means the driver can accept the
1778 * \c __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag and the
1779 * \c __DRI_CTX_ATTRIB_RESET_STRATEGY attribute in
1780 * \c __DRIdri2ExtensionRec::createContextAttribs.
1782 #define __DRI2_ROBUSTNESS "DRI_Robustness"
1783 #define __DRI2_ROBUSTNESS_VERSION 1
1785 typedef struct __DRIrobustnessExtensionRec __DRIrobustnessExtension
;
1786 struct __DRIrobustnessExtensionRec
{
1787 __DRIextension base
;
1791 * No-error context driver extension.
1793 * Existence of this extension means the driver can accept the
1794 * __DRI_CTX_FLAG_NO_ERROR flag.
1796 #define __DRI2_NO_ERROR "DRI_NoError"
1797 #define __DRI2_NO_ERROR_VERSION 1
1799 typedef struct __DRInoErrorExtensionRec
{
1800 __DRIextension base
;
1801 } __DRInoErrorExtension
;
1804 * Flush control driver extension.
1806 * Existence of this extension means the driver can accept the
1807 * \c __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR attribute in
1808 * \c __DRIdri2ExtensionRec::createContextAttribs.
1810 #define __DRI2_FLUSH_CONTROL "DRI_FlushControl"
1811 #define __DRI2_FLUSH_CONTROL_VERSION 1
1813 typedef struct __DRI2flushControlExtensionRec __DRI2flushControlExtension
;
1814 struct __DRI2flushControlExtensionRec
{
1815 __DRIextension base
;
1819 * DRI config options extension.
1821 * This extension provides the XML string containing driver options for use by
1822 * the loader in supporting the driconf application.
1825 * - Add the getXml getter function which allows the driver more flexibility in
1826 * how the XML is provided.
1827 * - Deprecate the direct xml pointer. It is only provided as a fallback for
1828 * older versions of libGL and must not be used by clients that are aware of
1829 * the newer version. Future driver versions may set it to NULL.
1831 #define __DRI_CONFIG_OPTIONS "DRI_ConfigOptions"
1832 #define __DRI_CONFIG_OPTIONS_VERSION 2
1834 typedef struct __DRIconfigOptionsExtensionRec
{
1835 __DRIextension base
;
1836 const char *xml
; /**< deprecated since v2, use getXml instead */
1839 * Get an XML string that describes available driver options for use by a
1840 * config application.
1842 * The returned string must be heap-allocated. The caller is responsible for
1845 char *(*getXml
)(const char *driver_name
);
1846 } __DRIconfigOptionsExtension
;
1849 * This extension provides a driver vtable to a set of common driver helper
1850 * functions (driCoreExtension, driDRI2Extension) within the driver
1851 * implementation, as opposed to having to pass them through a global
1854 * It is not intended to be public API to the actual loader, and the vtable
1855 * layout may change at any time.
1857 #define __DRI_DRIVER_VTABLE "DRI_DriverVtable"
1858 #define __DRI_DRIVER_VTABLE_VERSION 1
1860 typedef struct __DRIDriverVtableExtensionRec
{
1861 __DRIextension base
;
1862 const struct __DriverAPIRec
*vtable
;
1863 } __DRIDriverVtableExtension
;
1866 * Query renderer driver extension
1868 * This allows the window system layer (either EGL or GLX) to query aspects of
1869 * hardware and driver support without creating a context.
1871 #define __DRI2_RENDERER_QUERY "DRI_RENDERER_QUERY"
1872 #define __DRI2_RENDERER_QUERY_VERSION 1
1874 #define __DRI2_RENDERER_VENDOR_ID 0x0000
1875 #define __DRI2_RENDERER_DEVICE_ID 0x0001
1876 #define __DRI2_RENDERER_VERSION 0x0002
1877 #define __DRI2_RENDERER_ACCELERATED 0x0003
1878 #define __DRI2_RENDERER_VIDEO_MEMORY 0x0004
1879 #define __DRI2_RENDERER_UNIFIED_MEMORY_ARCHITECTURE 0x0005
1880 #define __DRI2_RENDERER_PREFERRED_PROFILE 0x0006
1881 #define __DRI2_RENDERER_OPENGL_CORE_PROFILE_VERSION 0x0007
1882 #define __DRI2_RENDERER_OPENGL_COMPATIBILITY_PROFILE_VERSION 0x0008
1883 #define __DRI2_RENDERER_OPENGL_ES_PROFILE_VERSION 0x0009
1884 #define __DRI2_RENDERER_OPENGL_ES2_PROFILE_VERSION 0x000a
1885 #define __DRI2_RENDERER_HAS_TEXTURE_3D 0x000b
1886 /* Whether there is an sRGB format support for every supported 32-bit UNORM
1889 #define __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB 0x000c
1891 /* Bitmaks of supported/available context priorities - must match
1892 * __EGL_CONTEXT_PRIORITY_LOW_BIT et al
1894 #define __DRI2_RENDERER_HAS_CONTEXT_PRIORITY 0x000d
1895 #define __DRI2_RENDERER_HAS_CONTEXT_PRIORITY_LOW (1 << 0)
1896 #define __DRI2_RENDERER_HAS_CONTEXT_PRIORITY_MEDIUM (1 << 1)
1897 #define __DRI2_RENDERER_HAS_CONTEXT_PRIORITY_HIGH (1 << 2)
1899 typedef struct __DRI2rendererQueryExtensionRec __DRI2rendererQueryExtension
;
1900 struct __DRI2rendererQueryExtensionRec
{
1901 __DRIextension base
;
1903 int (*queryInteger
)(__DRIscreen
*screen
, int attribute
, unsigned int *val
);
1904 int (*queryString
)(__DRIscreen
*screen
, int attribute
, const char **val
);
1908 * Image Loader extension. Drivers use this to allocate color buffers
1912 * See __DRIimageLoaderExtensionRec::getBuffers::buffer_mask.
1914 enum __DRIimageBufferMask
{
1915 __DRI_IMAGE_BUFFER_BACK
= (1 << 0),
1916 __DRI_IMAGE_BUFFER_FRONT
= (1 << 1),
1919 * A buffer shared between application and compositor. The buffer may be
1920 * simultaneously accessed by each.
1922 * A shared buffer is equivalent to an EGLSurface whose EGLConfig contains
1923 * EGL_MUTABLE_RENDER_BUFFER_BIT_KHR and whose active EGL_RENDER_BUFFER (as
1924 * opposed to any pending, requested change to EGL_RENDER_BUFFER) is
1925 * EGL_SINGLE_BUFFER.
1927 * If buffer_mask contains __DRI_IMAGE_BUFFER_SHARED, then must contains no
1928 * other bits. As a corollary, a __DRIdrawable that has a "shared" buffer
1929 * has no front nor back buffer.
1931 * The loader returns __DRI_IMAGE_BUFFER_SHARED in buffer_mask if and only
1933 * - The loader supports __DRI_MUTABLE_RENDER_BUFFER_LOADER.
1934 * - The driver supports __DRI_MUTABLE_RENDER_BUFFER_DRIVER.
1935 * - The EGLConfig of the drawable EGLSurface contains
1936 * EGL_MUTABLE_RENDER_BUFFER_BIT_KHR.
1937 * - The EGLContext's EGL_RENDER_BUFFER is EGL_SINGLE_BUFFER.
1938 * Equivalently, the EGLSurface's active EGL_RENDER_BUFFER (as
1939 * opposed to any pending, requested change to EGL_RENDER_BUFFER) is
1940 * EGL_SINGLE_BUFFER. (See the EGL 1.5 and
1941 * EGL_KHR_mutable_render_buffer spec for details about "pending" vs
1942 * "active" EGL_RENDER_BUFFER state).
1944 * A shared buffer is similar to a front buffer in that all rendering to the
1945 * buffer should appear promptly on the screen. It is different from
1946 * a front buffer in that its behavior is independent from the
1947 * GL_DRAW_BUFFER state. Specifically, if GL_DRAW_FRAMEBUFFER is 0 and the
1948 * __DRIdrawable's buffer_mask is __DRI_IMAGE_BUFFER_SHARED, then all
1949 * rendering should appear promptly on the screen if GL_DRAW_BUFFER is not
1952 * The difference between a shared buffer and a front buffer is motivated
1953 * by the constraints of Android and OpenGL ES. OpenGL ES does not support
1954 * front-buffer rendering. Android's SurfaceFlinger protocol provides the
1955 * EGL driver only a back buffer and no front buffer. The shared buffer
1956 * mode introduced by EGL_KHR_mutable_render_buffer is a backdoor though
1957 * EGL that allows Android OpenGL ES applications to render to what is
1958 * effectively the front buffer, a backdoor that required no change to the
1959 * OpenGL ES API and little change to the SurfaceFlinger API.
1961 __DRI_IMAGE_BUFFER_SHARED
= (1 << 2),
1964 struct __DRIimageList
{
1965 uint32_t image_mask
;
1970 #define __DRI_IMAGE_LOADER "DRI_IMAGE_LOADER"
1971 #define __DRI_IMAGE_LOADER_VERSION 3
1973 struct __DRIimageLoaderExtensionRec
{
1974 __DRIextension base
;
1977 * Allocate color buffers.
1979 * \param driDrawable
1980 * \param width Width of allocated buffers
1981 * \param height Height of allocated buffers
1982 * \param format one of __DRI_IMAGE_FORMAT_*
1983 * \param stamp Address of variable to be updated when
1984 * getBuffers must be called again
1985 * \param loaderPrivate The loaderPrivate for driDrawable
1986 * \param buffer_mask Set of buffers to allocate. A bitmask of
1987 * __DRIimageBufferMask.
1988 * \param buffers Returned buffers
1990 int (*getBuffers
)(__DRIdrawable
*driDrawable
,
1991 unsigned int format
,
1993 void *loaderPrivate
,
1994 uint32_t buffer_mask
,
1995 struct __DRIimageList
*buffers
);
1998 * Flush pending front-buffer rendering
2000 * Any rendering that has been performed to the
2001 * fake front will be flushed to the front
2003 * \param driDrawable Drawable whose front-buffer is to be flushed
2004 * \param loaderPrivate Loader's private data that was previously passed
2005 * into __DRIdri2ExtensionRec::createNewDrawable
2007 void (*flushFrontBuffer
)(__DRIdrawable
*driDrawable
, void *loaderPrivate
);
2010 * Return a loader capability value. If the loader doesn't know the enum,
2015 unsigned (*getCapability
)(void *loaderPrivate
, enum dri_loader_cap cap
);
2018 * Flush swap buffers
2020 * Make sure any outstanding swap buffers have been submitted to the
2023 * \param driDrawable Drawable whose swaps need to be flushed
2024 * \param loaderPrivate Loader's private data that was previously passed
2025 * into __DRIdri2ExtensionRec::createNewDrawable
2029 void (*flushSwapBuffers
)(__DRIdrawable
*driDrawable
, void *loaderPrivate
);
2036 #define __DRI_IMAGE_DRIVER "DRI_IMAGE_DRIVER"
2037 #define __DRI_IMAGE_DRIVER_VERSION 1
2039 struct __DRIimageDriverExtensionRec
{
2040 __DRIextension base
;
2042 /* Common DRI functions, shared with DRI2 */
2043 __DRIcreateNewScreen2Func createNewScreen2
;
2044 __DRIcreateNewDrawableFunc createNewDrawable
;
2045 __DRIcreateContextAttribsFunc createContextAttribs
;
2046 __DRIgetAPIMaskFunc getAPIMask
;
2050 * Background callable loader extension.
2052 * Loaders expose this extension to indicate to drivers that they are capable
2053 * of handling callbacks from the driver's background drawing threads.
2055 #define __DRI_BACKGROUND_CALLABLE "DRI_BackgroundCallable"
2056 #define __DRI_BACKGROUND_CALLABLE_VERSION 1
2058 typedef struct __DRIbackgroundCallableExtensionRec __DRIbackgroundCallableExtension
;
2059 struct __DRIbackgroundCallableExtensionRec
{
2060 __DRIextension base
;
2063 * Indicate that this thread is being used by the driver as a background
2064 * drawing thread which may make callbacks to the loader.
2066 * \param loaderPrivate is the value that was passed to to the driver when
2067 * the context was created. This can be used by the loader to identify
2068 * which context any callbacks are associated with.
2070 * If this function is called more than once from any given thread, each
2071 * subsequent call overrides the loaderPrivate data that was passed in the
2072 * previous call. The driver can take advantage of this to re-use a
2073 * background thread to perform drawing on behalf of multiple contexts.
2075 * It is permissible for the driver to call this function from a
2076 * non-background thread (i.e. a thread that has already been bound to a
2077 * context using __DRIcoreExtensionRec::bindContext()); when this happens,
2078 * the \c loaderPrivate pointer must be equal to the pointer that was
2079 * passed to the driver when the currently bound context was created.
2081 * This call should execute quickly enough that the driver can call it with
2082 * impunity whenever a background thread starts performing drawing
2083 * operations (e.g. it should just set a thread-local variable).
2085 void (*setBackgroundContext
)(void *loaderPrivate
);
2088 * Indicate that it is multithread safe to use glthread. For GLX/EGL
2089 * platforms using Xlib, that involves calling XInitThreads, before
2090 * opening an X display.
2092 * Note: only supported if extension version is at least 2.
2094 * \param loaderPrivate is the value that was passed to to the driver when
2095 * the context was created. This can be used by the loader to identify
2096 * which context any callbacks are associated with.
2098 GLboolean (*isThreadSafe
)(void *loaderPrivate
);
2102 * The driver portion of EGL_KHR_mutable_render_buffer.
2104 * If the driver creates a __DRIconfig with
2105 * __DRI_ATTRIB_MUTABLE_RENDER_BUFFER, then it must support this extension.
2107 * To support this extension:
2109 * - The driver should create at least one __DRIconfig with
2110 * __DRI_ATTRIB_MUTABLE_RENDER_BUFFER. This is strongly recommended but
2113 * - The driver must be able to handle __DRI_IMAGE_BUFFER_SHARED if
2114 * returned by __DRIimageLoaderExtension:getBuffers().
2116 * - When rendering to __DRI_IMAGE_BUFFER_SHARED, it must call
2117 * __DRImutableRenderBufferLoaderExtension::displaySharedBuffer() in
2118 * response to glFlush and glFinish. (This requirement is not documented
2119 * in EGL_KHR_mutable_render_buffer, but is a de-facto requirement in the
2120 * Android ecosystem. Android applications expect that glFlush will
2121 * immediately display the buffer when in shared buffer mode, and Android
2122 * drivers comply with this expectation). It :may: call
2123 * displaySharedBuffer() more often than required.
2125 * - When rendering to __DRI_IMAGE_BUFFER_SHARED, it must ensure that the
2126 * buffer is always in a format compatible for display because the
2127 * display engine (usually SurfaceFlinger or hwcomposer) may display the
2128 * image at any time, even concurrently with 3D rendering. For example,
2129 * display hardware and the GL hardware may be able to access the buffer
2130 * simultaneously. In particular, if the buffer is compressed then take
2131 * care that SurfaceFlinger and hwcomposer can consume the compression
2134 * \see __DRI_IMAGE_BUFFER_SHARED
2135 * \see __DRI_ATTRIB_MUTABLE_RENDER_BUFFER
2136 * \see __DRI_MUTABLE_RENDER_BUFFER_LOADER
2138 #define __DRI_MUTABLE_RENDER_BUFFER_DRIVER "DRI_MutableRenderBufferDriver"
2139 #define __DRI_MUTABLE_RENDER_BUFFER_DRIVER_VERSION 1
2141 typedef struct __DRImutableRenderBufferDriverExtensionRec __DRImutableRenderBufferDriverExtension
;
2142 struct __DRImutableRenderBufferDriverExtensionRec
{
2143 __DRIextension base
;
2147 * The loader portion of EGL_KHR_mutable_render_buffer.
2149 * Requires loader extension DRI_IMAGE_LOADER, through which the loader sends
2150 * __DRI_IMAGE_BUFFER_SHARED to the driver.
2152 * \see __DRI_MUTABLE_RENDER_BUFFER_DRIVER
2154 #define __DRI_MUTABLE_RENDER_BUFFER_LOADER "DRI_MutableRenderBufferLoader"
2155 #define __DRI_MUTABLE_RENDER_BUFFER_LOADER_VERSION 1
2157 typedef struct __DRImutableRenderBufferLoaderExtensionRec __DRImutableRenderBufferLoaderExtension
;
2158 struct __DRImutableRenderBufferLoaderExtensionRec
{
2159 __DRIextension base
;
2162 * Inform the display engine (that is, SurfaceFlinger and/or hwcomposer)
2163 * that the __DRIdrawable has new content.
2165 * The display engine may ignore this call, for example, if it continually
2166 * refreshes and displays the buffer on every frame, as in
2167 * EGL_ANDROID_front_buffer_auto_refresh. On the other extreme, the display
2168 * engine may refresh and display the buffer only in frames in which the
2169 * driver calls this.
2171 * If the fence_fd is not -1, then the display engine will display the
2172 * buffer only after the fence signals.
2174 * The drawable's current __DRIimageBufferMask, as returned by
2175 * __DRIimageLoaderExtension::getBuffers(), must be
2176 * __DRI_IMAGE_BUFFER_SHARED.
2178 void (*displaySharedBuffer
)(__DRIdrawable
*drawable
, int fence_fd
,
2179 void *loaderPrivate
);