| 1 | /*
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| 2 | * Copyright © 2007 Red Hat, Inc.
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| 3 | *
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a
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| 5 | * copy of this software and associated documentation files (the "Soft-
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| 6 | * ware"), to deal in the Software without restriction, including without
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| 7 | * limitation the rights to use, copy, modify, merge, publish, distribute,
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| 8 | * and/or sell copies of the Software, and to permit persons to whom the
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| 9 | * Software is furnished to do so, provided that the above copyright
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| 10 | * notice(s) and this permission notice appear in all copies of the Soft-
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| 11 | * ware and that both the above copyright notice(s) and this permission
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| 12 | * notice appear in supporting documentation.
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| 13 | *
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| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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| 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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| 16 | * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
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| 17 | * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
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| 18 | * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
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| 19 | * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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| 20 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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| 21 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
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| 22 | * MANCE OF THIS SOFTWARE.
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| 23 | *
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| 24 | * Except as contained in this notice, the name of a copyright holder shall
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| 25 | * not be used in advertising or otherwise to promote the sale, use or
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| 26 | * other dealings in this Software without prior written authorization of
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| 27 | * the copyright holder.
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| 28 | *
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| 29 | * Authors:
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| 30 | * Kristian Høgsberg ([email protected])
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| 31 | */
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| 32 |
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| 33 | #ifndef _DRI2_H_
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| 34 | #define _DRI2_H_
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| 35 |
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| 36 | #include <X11/extensions/dri2tokens.h>
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| 37 |
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| 38 | /* Version 2 structure (with format at the end) */
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| 39 | typedef struct {
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| 40 | unsigned int attachment;
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| 41 | unsigned int name;
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| 42 | unsigned int pitch;
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| 43 | unsigned int cpp;
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| 44 | unsigned int flags;
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| 45 | unsigned int format;
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| 46 | void *driverPrivate;
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| 47 | } DRI2BufferRec, *DRI2BufferPtr;
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| 48 |
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| 49 | extern CARD8 dri2_major; /* version of DRI2 supported by DDX */
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| 50 | extern CARD8 dri2_minor;
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| 51 |
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| 52 | typedef DRI2BufferRec DRI2Buffer2Rec, *DRI2Buffer2Ptr;
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| 53 | typedef void (*DRI2SwapEventPtr)(ClientPtr client, void *data, int type,
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| 54 | CARD64 ust, CARD64 msc, CARD64 sbc);
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| 55 |
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| 56 |
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| 57 | typedef DRI2BufferPtr (*DRI2CreateBuffersProcPtr)(DrawablePtr pDraw,
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| 58 | unsigned int *attachments,
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| 59 | int count);
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| 60 | typedef void (*DRI2DestroyBuffersProcPtr)(DrawablePtr pDraw,
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| 61 | DRI2BufferPtr buffers,
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| 62 | int count);
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| 63 | typedef void (*DRI2CopyRegionProcPtr)(DrawablePtr pDraw,
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| 64 | RegionPtr pRegion,
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| 65 | DRI2BufferPtr pDestBuffer,
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| 66 | DRI2BufferPtr pSrcBuffer);
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| 67 | typedef void (*DRI2WaitProcPtr)(WindowPtr pWin,
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| 68 | unsigned int sequence);
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| 69 | typedef int (*DRI2AuthMagicProcPtr)(int fd, uint32_t magic);
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| 70 |
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| 71 | /**
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| 72 | * Schedule a buffer swap
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| 73 | *
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| 74 | * This callback is used to support glXSwapBuffers and the OML_sync_control
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| 75 | * extension (see it for a description of the params).
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| 76 | *
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| 77 | * Drivers should queue an event for the frame count that satisfies the
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| 78 | * parameters passed in. If the event is in the future (i.e. the conditions
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| 79 | * aren't currently satisfied), the server may block the client at the next
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| 80 | * GLX request using DRI2WaitSwap. When the event arrives, drivers should call
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| 81 | * \c DRI2SwapComplete, which will handle waking the client and returning
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| 82 | * the appropriate data.
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| 83 | *
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| 84 | * The DDX is responsible for doing a flip, exchange, or blit of the swap
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| 85 | * when the corresponding event arrives. The \c DRI2CanFlip and
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| 86 | * \c DRI2CanExchange functions can be used as helpers for this purpose.
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| 87 | *
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| 88 | * \param client client pointer (used for block/unblock)
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| 89 | * \param pDraw drawable whose count we want
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| 90 | * \param pDestBuffer current front buffer
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| 91 | * \param pSrcBuffer current back buffer
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| 92 | * \param target_msc frame count to wait for
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| 93 | * \param divisor divisor for condition equation
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| 94 | * \param remainder remainder for division equation
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| 95 | * \param func function to call when the swap completes
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| 96 | * \param data data for the callback \p func.
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| 97 | */
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| 98 | typedef int (*DRI2ScheduleSwapProcPtr)(ClientPtr client,
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| 99 | DrawablePtr pDraw,
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| 100 | DRI2BufferPtr pDestBuffer,
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| 101 | DRI2BufferPtr pSrcBuffer,
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| 102 | CARD64 *target_msc,
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| 103 | CARD64 divisor,
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| 104 | CARD64 remainder,
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| 105 | DRI2SwapEventPtr func,
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| 106 | void *data);
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| 107 | typedef DRI2BufferPtr (*DRI2CreateBufferProcPtr)(DrawablePtr pDraw,
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| 108 | unsigned int attachment,
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| 109 | unsigned int format);
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| 110 | typedef void (*DRI2DestroyBufferProcPtr)(DrawablePtr pDraw,
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| 111 | DRI2BufferPtr buffer);
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| 112 | /**
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| 113 | * Get current media stamp counter values
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| 114 | *
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| 115 | * This callback is used to support the SGI_video_sync and OML_sync_control
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| 116 | * extensions.
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| 117 | *
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| 118 | * Drivers should return the current frame counter and the timestamp from
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| 119 | * when the returned frame count was last incremented.
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| 120 | *
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| 121 | * The count should correspond to the screen where the drawable is currently
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| 122 | * visible. If the drawable isn't visible (e.g. redirected), the server
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| 123 | * should return BadDrawable to the client, pending GLX spec updates to
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| 124 | * define this behavior.
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| 125 | *
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| 126 | * \param pDraw drawable whose count we want
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| 127 | * \param ust timestamp from when the count was last incremented.
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| 128 | * \param mst current frame count
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| 129 | */
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| 130 | typedef int (*DRI2GetMSCProcPtr)(DrawablePtr pDraw, CARD64 *ust,
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| 131 | CARD64 *msc);
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| 132 | /**
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| 133 | * Schedule a frame count related wait
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| 134 | *
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| 135 | * This callback is used to support the SGI_video_sync and OML_sync_control
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| 136 | * extensions. See those specifications for details on how to handle
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| 137 | * the divisor and remainder parameters.
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| 138 | *
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| 139 | * Drivers should queue an event for the frame count that satisfies the
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| 140 | * parameters passed in. If the event is in the future (i.e. the conditions
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| 141 | * aren't currently satisfied), the driver should block the client using
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| 142 | * \c DRI2BlockClient. When the event arrives, drivers should call
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| 143 | * \c DRI2WaitMSCComplete, which will handle waking the client and returning
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| 144 | * the appropriate data.
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| 145 | *
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| 146 | * \param client client pointer (used for block/unblock)
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| 147 | * \param pDraw drawable whose count we want
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| 148 | * \param target_msc frame count to wait for
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| 149 | * \param divisor divisor for condition equation
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| 150 | * \param remainder remainder for division equation
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| 151 | */
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| 152 | typedef int (*DRI2ScheduleWaitMSCProcPtr)(ClientPtr client,
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| 153 | DrawablePtr pDraw,
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| 154 | CARD64 target_msc,
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| 155 | CARD64 divisor,
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| 156 | CARD64 remainder);
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| 157 |
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| 158 | typedef void (*DRI2InvalidateProcPtr)(DrawablePtr pDraw,
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| 159 | void *data);
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| 160 |
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| 161 | /**
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| 162 | * Version of the DRI2InfoRec structure defined in this header
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| 163 | */
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| 164 | #define DRI2INFOREC_VERSION 5
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| 165 |
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| 166 | typedef struct {
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| 167 | unsigned int version; /**< Version of this struct */
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| 168 | int fd;
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| 169 | const char *driverName;
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| 170 | const char *deviceName;
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| 171 |
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| 172 | DRI2CreateBufferProcPtr CreateBuffer;
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| 173 | DRI2DestroyBufferProcPtr DestroyBuffer;
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| 174 | DRI2CopyRegionProcPtr CopyRegion;
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| 175 | DRI2WaitProcPtr Wait;
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| 176 |
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| 177 | /* added in version 4 */
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| 178 |
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| 179 | DRI2ScheduleSwapProcPtr ScheduleSwap;
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| 180 | DRI2GetMSCProcPtr GetMSC;
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| 181 | DRI2ScheduleWaitMSCProcPtr ScheduleWaitMSC;
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| 182 |
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| 183 | /* number of drivers in the driverNames array */
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| 184 | unsigned int numDrivers;
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| 185 | /* array of driver names, indexed by DRI2Driver* driver types */
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| 186 | /* a name of NULL means that driver is not supported */
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| 187 | const char * const *driverNames;
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| 188 |
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| 189 | /* added in version 5 */
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| 190 |
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| 191 | DRI2AuthMagicProcPtr AuthMagic;
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| 192 | } DRI2InfoRec, *DRI2InfoPtr;
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| 193 |
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| 194 | extern _X_EXPORT int DRI2EventBase;
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| 195 |
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| 196 | extern _X_EXPORT Bool DRI2ScreenInit(ScreenPtr pScreen,
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| 197 | DRI2InfoPtr info);
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| 198 |
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| 199 | extern _X_EXPORT void DRI2CloseScreen(ScreenPtr pScreen);
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| 200 |
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| 201 | extern _X_EXPORT Bool DRI2HasSwapControl(ScreenPtr pScreen);
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| 202 |
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| 203 | extern _X_EXPORT Bool DRI2Connect(ScreenPtr pScreen,
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| 204 | unsigned int driverType,
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| 205 | int *fd,
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| 206 | const char **driverName,
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| 207 | const char **deviceName);
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| 208 |
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| 209 | extern _X_EXPORT Bool DRI2Authenticate(ScreenPtr pScreen, uint32_t magic);
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| 210 |
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| 211 | extern _X_EXPORT int DRI2CreateDrawable(ClientPtr client,
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| 212 | DrawablePtr pDraw,
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| 213 | XID id,
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| 214 | DRI2InvalidateProcPtr invalidate,
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| 215 | void *priv);
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| 216 |
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| 217 | extern _X_EXPORT void DRI2DestroyDrawable(DrawablePtr pDraw);
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| 218 |
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| 219 | extern _X_EXPORT DRI2BufferPtr *DRI2GetBuffers(DrawablePtr pDraw,
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| 220 | int *width,
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| 221 | int *height,
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| 222 | unsigned int *attachments,
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| 223 | int count,
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| 224 | int *out_count);
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| 225 |
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| 226 | extern _X_EXPORT int DRI2CopyRegion(DrawablePtr pDraw,
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| 227 | RegionPtr pRegion,
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| 228 | unsigned int dest,
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| 229 | unsigned int src);
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| 230 |
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| 231 | /**
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| 232 | * Determine the major and minor version of the DRI2 extension.
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| 233 | *
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| 234 | * Provides a mechanism to other modules (e.g., 2D drivers) to determine the
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| 235 | * version of the DRI2 extension. While it is possible to peek directly at
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| 236 | * the \c XF86ModuleData from a layered module, such a module will fail to
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| 237 | * load (due to an unresolved symbol) if the DRI2 extension is not loaded.
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| 238 | *
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| 239 | * \param major Location to store the major verion of the DRI2 extension
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| 240 | * \param minor Location to store the minor verion of the DRI2 extension
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| 241 | *
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| 242 | * \note
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| 243 | * This interface was added some time after the initial release of the DRI2
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| 244 | * module. Layered modules that wish to use this interface must first test
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| 245 | * its existance by calling \c xf86LoaderCheckSymbol.
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| 246 | */
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| 247 | extern _X_EXPORT void DRI2Version(int *major, int *minor);
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| 248 |
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| 249 | extern _X_EXPORT DRI2BufferPtr *DRI2GetBuffersWithFormat(DrawablePtr pDraw,
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| 250 | int *width, int *height, unsigned int *attachments, int count,
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| 251 | int *out_count);
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| 252 |
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| 253 | extern _X_EXPORT void DRI2SwapInterval(DrawablePtr pDrawable, int interval);
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| 254 | extern _X_EXPORT int DRI2SwapBuffers(ClientPtr client, DrawablePtr pDrawable,
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| 255 | CARD64 target_msc, CARD64 divisor,
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| 256 | CARD64 remainder, CARD64 *swap_target,
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| 257 | DRI2SwapEventPtr func, void *data);
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| 258 | extern _X_EXPORT Bool DRI2WaitSwap(ClientPtr client, DrawablePtr pDrawable);
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| 259 |
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| 260 | extern _X_EXPORT int DRI2GetMSC(DrawablePtr pDrawable, CARD64 *ust,
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| 261 | CARD64 *msc, CARD64 *sbc);
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| 262 | extern _X_EXPORT int DRI2WaitMSC(ClientPtr client, DrawablePtr pDrawable,
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| 263 | CARD64 target_msc, CARD64 divisor,
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| 264 | CARD64 remainder);
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| 265 | extern _X_EXPORT int ProcDRI2WaitMSCReply(ClientPtr client, CARD64 ust,
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| 266 | CARD64 msc, CARD64 sbc);
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| 267 | extern _X_EXPORT int DRI2WaitSBC(ClientPtr client, DrawablePtr pDraw,
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| 268 | CARD64 target_sbc);
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| 269 | extern _X_EXPORT Bool DRI2ThrottleClient(ClientPtr client, DrawablePtr pDraw);
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| 270 |
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| 271 | extern _X_EXPORT Bool DRI2CanFlip(DrawablePtr pDraw);
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| 272 |
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| 273 | extern _X_EXPORT Bool DRI2CanExchange(DrawablePtr pDraw);
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| 274 |
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| 275 | /* Note: use *only* for MSC related waits */
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| 276 | extern _X_EXPORT void DRI2BlockClient(ClientPtr client, DrawablePtr pDraw);
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| 277 |
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| 278 | extern _X_EXPORT void DRI2SwapComplete(ClientPtr client, DrawablePtr pDraw,
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| 279 | int frame, unsigned int tv_sec,
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| 280 | unsigned int tv_usec, int type,
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| 281 | DRI2SwapEventPtr swap_complete,
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| 282 | void *swap_data);
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| 283 | extern _X_EXPORT void DRI2WaitMSCComplete(ClientPtr client, DrawablePtr pDraw,
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| 284 | int frame, unsigned int tv_sec,
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| 285 | unsigned int tv_usec);
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| 286 |
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| 287 | #endif
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