ff6c7764c2
This change implements the protocol for DRI2GetBuffersWithFormat, but the bulk of the differences are the changes to the extension / driver interface to make this function work. The old CreateBuffers and DeleteBuffers routines are replaced with CreateBuffer and DeleteBuffer (both singular). This allows drivers to allocate buffers for a drawable one at a time. As a result, 3D drivers can now allocate the (fake) front-buffer for a window only when it is needed. Since 3D drivers only ask for the front-buffer on demand, the real front-buffer is always created. This allows CopyRegion impelemenations of SwapBuffers to continue working. As with previous version of this code, if the client asks for the front-buffer for a window, we instead give it the fake front-buffer. Signed-off-by: Ian Romanick <ian.d.romanick@intel.com> Reviewed-by: Kristian Høgsberg <krh@redhat.com>
146 lines
4.9 KiB
C
146 lines
4.9 KiB
C
/*
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* Copyright © 2007 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Soft-
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* ware"), to deal in the Software without restriction, including without
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* limitation the rights to use, copy, modify, merge, publish, distribute,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, provided that the above copyright
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* notice(s) and this permission notice appear in all copies of the Soft-
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* ware and that both the above copyright notice(s) and this permission
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* notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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* ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
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* RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
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* THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
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* QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
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* MANCE OF THIS SOFTWARE.
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*
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* Except as contained in this notice, the name of a copyright holder shall
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* not be used in advertising or otherwise to promote the sale, use or
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* other dealings in this Software without prior written authorization of
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* the copyright holder.
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*
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* Authors:
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* Kristian Høgsberg (krh@redhat.com)
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*/
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#ifndef _DRI2_H_
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#define _DRI2_H_
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#include <X11/extensions/dri2tokens.h>
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typedef struct {
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unsigned int attachment;
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unsigned int name;
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unsigned int pitch;
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unsigned int cpp;
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unsigned int flags;
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unsigned int format;
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void *driverPrivate;
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} DRI2BufferRec, *DRI2BufferPtr;
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typedef DRI2BufferPtr (*DRI2CreateBuffersProcPtr)(DrawablePtr pDraw,
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unsigned int *attachments,
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int count);
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typedef void (*DRI2DestroyBuffersProcPtr)(DrawablePtr pDraw,
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DRI2BufferPtr buffers,
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int count);
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typedef void (*DRI2CopyRegionProcPtr)(DrawablePtr pDraw,
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RegionPtr pRegion,
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DRI2BufferPtr pDestBuffer,
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DRI2BufferPtr pSrcBuffer);
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typedef void (*DRI2WaitProcPtr)(WindowPtr pWin,
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unsigned int sequence);
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typedef DRI2BufferPtr (*DRI2CreateBufferProcPtr)(DrawablePtr pDraw,
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unsigned int attachment,
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unsigned int format);
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typedef void (*DRI2DestroyBufferProcPtr)(DrawablePtr pDraw,
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DRI2BufferPtr buffer);
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/**
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* Version of the DRI2InfoRec structure defined in this header
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*/
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#define DRI2INFOREC_VERSION 2
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typedef struct {
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unsigned int version; /**< Version of this struct */
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int fd;
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const char *driverName;
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const char *deviceName;
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DRI2CreateBuffersProcPtr CreateBuffers;
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DRI2DestroyBuffersProcPtr DestroyBuffers;
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DRI2CopyRegionProcPtr CopyRegion;
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DRI2WaitProcPtr Wait;
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/**
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* \name Fields added in version 2 of the structure.
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*/
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/*@{*/
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DRI2CreateBufferProcPtr CreateBuffer;
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DRI2DestroyBufferProcPtr DestroyBuffer;
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/*@}*/
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} DRI2InfoRec, *DRI2InfoPtr;
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extern _X_EXPORT Bool DRI2ScreenInit(ScreenPtr pScreen,
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DRI2InfoPtr info);
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extern _X_EXPORT void DRI2CloseScreen(ScreenPtr pScreen);
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extern _X_EXPORT Bool DRI2Connect(ScreenPtr pScreen,
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unsigned int driverType,
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int *fd,
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const char **driverName,
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const char **deviceName);
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extern _X_EXPORT Bool DRI2Authenticate(ScreenPtr pScreen, drm_magic_t magic);
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extern _X_EXPORT int DRI2CreateDrawable(DrawablePtr pDraw);
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extern _X_EXPORT void DRI2DestroyDrawable(DrawablePtr pDraw);
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extern _X_EXPORT DRI2BufferPtr *DRI2GetBuffers(DrawablePtr pDraw,
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int *width,
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int *height,
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unsigned int *attachments,
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int count,
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int *out_count);
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extern _X_EXPORT int DRI2CopyRegion(DrawablePtr pDraw,
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RegionPtr pRegion,
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unsigned int dest,
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unsigned int src);
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/**
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* Determine the major and minor version of the DRI2 extension.
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*
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* Provides a mechanism to other modules (e.g., 2D drivers) to determine the
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* version of the DRI2 extension. While it is possible to peek directly at
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* the \c XF86ModuleData from a layered module, such a module will fail to
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* load (due to an unresolved symbol) if the DRI2 extension is not loaded.
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*
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* \param major Location to store the major verion of the DRI2 extension
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* \param minor Location to store the minor verion of the DRI2 extension
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*
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* \note
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* This interface was added some time after the initial release of the DRI2
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* module. Layered modules that wish to use this interface must first test
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* its existance by calling \c xf86LoaderCheckSymbol.
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*/
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extern _X_EXPORT void DRI2Version(int *major, int *minor);
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extern _X_EXPORT DRI2BufferPtr *DRI2GetBuffersWithFormat(DrawablePtr pDraw,
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int *width, int *height, unsigned int *attachments, int count,
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int *out_count);
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#endif
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