/*
*
* Copyright (C) 2000 Keith Packard
* 2004 Eric Anholt
* 2005 Zack Rusin
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of copyright holders not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Copyright holders make no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/** @file
* This is the header containing the public API of EXA for exa drivers.
*/
#ifndef EXA_H
#define EXA_H
#include "scrnintstr.h"
#include "pixmapstr.h"
#include "windowstr.h"
#include "gcstruct.h"
#include "picturestr.h"
#include "fb.h"
#define EXA_VERSION_MAJOR 2
#define EXA_VERSION_MINOR 2
#define EXA_VERSION_RELEASE 0
typedef struct _ExaOffscreenArea ExaOffscreenArea;
typedef void (*ExaOffscreenSaveProc) (ScreenPtr pScreen, ExaOffscreenArea *area);
typedef enum _ExaOffscreenState {
ExaOffscreenAvail,
ExaOffscreenRemovable,
ExaOffscreenLocked
} ExaOffscreenState;
struct _ExaOffscreenArea {
int base_offset; /* allocation base */
int offset; /* aligned offset */
int size; /* total allocation size */
int score;
pointer privData;
ExaOffscreenSaveProc save;
ExaOffscreenState state;
ExaOffscreenArea *next;
};
/**
* The ExaDriver structure is allocated through exaDriverAlloc(), and then
* fllled in by drivers.
*/
typedef struct _ExaDriver {
/**
* exa_major and exa_minor should be set by the driver to the version of
* EXA which the driver was compiled for (or configures itself at runtime
* to support). This allows EXA to extend the structure for new features
* without breaking ABI for drivers compiled against older versions.
*/
int exa_major, exa_minor;
/**
* memoryBase is the address of the beginning of framebuffer memory.
* The visible screen should be within memoryBase to memoryBase +
* memorySize.
*/
CARD8 *memoryBase;
/**
* offScreenBase is the offset from memoryBase of the beginning of the area
* to be managed by EXA's linear offscreen memory manager.
*
* In XFree86 DDX drivers, this is probably:
* (pScrn->displayWidth * cpp * pScrn->virtualY)
*/
unsigned long offScreenBase;
/**
* memorySize is the length (in bytes) of framebuffer memory beginning
* from memoryBase.
*
* The offscreen memory manager will manage the area beginning at
* (memoryBase + offScreenBase), with a length of (memorySize -
* offScreenBase)
*
* In XFree86 DDX drivers, this is probably (pScrn->videoRam * 1024)
*/
unsigned long memorySize;
/**
* pixmapOffsetAlign is the byte alignment necessary for pixmap offsets
* within framebuffer.
*
* Hardware typically has a required alignment of offsets, which may or may
* not be a power of two. EXA will ensure that pixmaps managed by the
* offscreen memory manager meet this alignment requirement.
*/
int pixmapOffsetAlign;
/**
* pixmapPitchAlign is the byte alignment necessary for pixmap pitches
* within the framebuffer.
*
* Hardware typically has a required alignment of pitches for acceleration.
* For 3D hardware, Composite acceleration often requires that source and
* mask pixmaps (textures) have a power-of-two pitch, which can be demanded
* using EXA_OFFSCREEN_ALIGN_POT. These pitch requirements only apply to
* pixmaps managed by the offscreen memory manager. Thus, it is up to the
* driver to ensure that the visible screen has an appropriate pitch for
* acceleration.
*/
int pixmapPitchAlign;
/**
* The flags field is bitfield of boolean values controlling EXA's behavior.
*
* The flags in clude EXA_OFFSCREEN_PIXMAPS, EXA_OFFSCREEN_ALIGN_POT, and
* EXA_TWO_BITBLT_DIRECTIONS.
*/
int flags;
/** @{ */
/**
* maxX controls the X coordinate limitation for rendering from the card.
* The driver should never receive a request for rendering beyond maxX
* in the X direction from the origin of a pixmap.
*/
int maxX;
/**
* maxY controls the Y coordinate limitation for rendering from the card.
* The driver should never receive a request for rendering beyond maxY
* in the Y direction from the origin of a pixmap.
*/
int maxY;
/** @} */
/* private */
ExaOffscreenArea *offScreenAreas;
Bool needsSync;
int lastMarker;
/** @name Solid
* @{
*/
/**
* PrepareSolid() sets up the driver for doing a solid fill.
* @param pPixmap Destination pixmap
* @param alu raster operation
* @param planemask write mask for the fill
* @param fg "foreground" color for the fill
*
* This call should set up the driver for doing a series of solid fills
* through the Solid() call. The alu raster op is one of the GX*
* graphics functions listed in X.h, and typically maps to a similar
* single-byte "ROP" setting in all hardware. The planemask controls
* which bits of the destination should be affected, and will only represent
* the bits up to the depth of pPixmap. The fg is the pixel value of the
* foreground color referred to in ROP descriptions.
*
* Note that many drivers will need to store some of the data in the driver
* private record, for sending to the hardware with each drawing command.
*
* The PrepareSolid() call is required of all drivers, but it may fail for any
* reason. Failure results in a fallback to software rendering.
*/
Bool (*PrepareSolid) (PixmapPtr pPixmap,
int alu,
Pixel planemask,
Pixel fg);
/**
* Solid() performs a solid fill set up in the last PrepareSolid() call.
*
* @param pPixmap destination pixmap
* @param x1 left coordinate
* @param y1 top coordinate
* @param x2 right coordinate
* @param y2 bottom coordinate
*
* Performs the fill set up by the last PrepareSolid() call, covering the
* area from (x1,y1) to (x2,y2) in pPixmap. Note that the coordinates are
* in the coordinate space of the destination pixmap, so the driver will
* need to set up the hardware's offset and pitch for the destination
* coordinates according to the pixmap's offset and pitch within
* framebuffer. This likely means using exaGetPixmapOffset() and
* exaGetPixmapPitch().
*
* This call is required if PrepareSolid() ever succeeds.
*/
void (*Solid) (PixmapPtr pPixmap, int x1, int y1, int x2, int y2);
/**
* DoneSolid() finishes a set of solid fills.
*
* @param pPixmap destination pixmap.
*
* The DoneSolid() call is called at the end of a series of consecutive
* Solid() calls following a successful PrepareSolid(). This allows drivers
* to finish up emitting drawing commands that were buffered, or clean up
* state from PrepareSolid().
*
* This call is required if PrepareSolid() ever succeeds.
*/
void (*DoneSolid) (PixmapPtr pPixmap);
/** @} */
/** @name Copy
* @{
*/
/**
* PrepareCopy() sets up the driver for doing a copy within video
* memory.
*
* @param pSrcPixmap source pixmap
* @param pDstPixmap destination pixmap
* @param dx X copy direction
* @param dy Y copy direction
* @param alu raster operation
* @param planemask write mask for the fill
*
* This call should set up the driver for doing a series of copies from the
* the pSrcPixmap to the pDstPixmap. The dx flag will be positive if the
* hardware should do the copy from the left to the right, and dy will be
* positive if the copy should be done from the top to the bottom. This
* is to deal with self-overlapping copies when pSrcPixmap == pDstPixmap.
* If your hardware can only support blits that are (left to right, top to
* bottom) or (right to left, bottom to top), then you should set
* #EXA_TWO_BITBLT_DIRECTIONS, and EXA will break down Copy operations to
* ones that meet those requirements. The alu raster op is one of the GX*
* graphics functions listed in X.h, and typically maps to a similar
* single-byte "ROP" setting in all hardware. The planemask controls which
* bits of the destination should be affected, and will only represent the
* bits up to the depth of pPixmap.
*
* Note that many drivers will need to store some of the data in the driver
* private record, for sending to the hardware with each drawing command.
*
* The PrepareCopy() call is required of all drivers, but it may fail for any
* reason. Failure results in a fallback to software rendering.
*/
Bool (*PrepareCopy) (PixmapPtr pSrcPixmap,
PixmapPtr pDstPixmap,
int dx,
int dy,
int alu,
Pixel planemask);
/**
* Copy() performs a copy set up in the last PrepareCopy call.
*
* @param pDstPixmap destination pixmap
* @param srcX source X coordinate
* @param srcY source Y coordinate
* @param dstX destination X coordinate
* @param dstY destination Y coordinate
* @param width width of the rectangle to be copied
* @param height height of the rectangle to be copied.
*
* Performs the copy set up by the last PrepareCopy() call, copying the
* rectangle from (srcX, srcY) to (srcX + width, srcY + width) in the source
* pixmap to the same-sized rectangle at (dstX, dstY) in the destination
* pixmap. Those rectangles may overlap in memory, if
* pSrcPixmap == pDstPixmap. Note that this call does not receive the
* pSrcPixmap as an argument -- if it's needed in this function, it should
* be stored in the driver private during PrepareCopy(). As with Solid(),
* the coordinates are in the coordinate space of each pixmap, so the driver
* will need to set up source and destination pitches and offsets from those
* pixmaps, probably using exaGetPixmapOffset() and exaGetPixmapPitch().
*
* This call is required if PrepareCopy ever succeeds.
*/
void (*Copy) (PixmapPtr pDstPixmap,
int srcX,
int srcY,
int dstX,
int dstY,
int width,
int height);
/**
* DoneCopy() finishes a set of copies.
*
* @param pPixmap destination pixmap.
*
* The DoneCopy() call is called at the end of a series of consecutive
* Copy() calls following a successful PrepareCopy(). This allows drivers
* to finish up emitting drawing commands that were buffered, or clean up
* state from PrepareCopy().
*
* This call is required if PrepareCopy() ever succeeds.
*/
void (*DoneCopy) (PixmapPtr pDstPixmap);
/** @} */
/** @name Composite
* @{
*/
/**
* CheckComposite() checks to see if a composite operation could be
* accelerated.
*
* @param op Render operation
* @param pSrcPicture source Picture
* @param pMaskPicture mask picture
* @param pDstPicture destination Picture
*
* The CheckComposite() call checks if the driver could handle acceleration
* of op with the given source, mask, and destination pictures. This allows
* drivers to check source and destination formats, supported operations,
* transformations, and component alpha state, and send operations it can't
* support to software rendering early on. This avoids costly pixmap
* migration to the wrong places when the driver can't accelerate
* operations. Note that because migration hasn't happened, the driver
* can't know during CheckComposite() what the offsets and pitches of the
* pixmaps are going to be.
*
* See PrepareComposite() for more details on likely issues that drivers
* will have in accelerating Composite operations.
*
* The CheckComposite() call is recommended if PrepareComposite() is
* implemented, but is not required.
*/
Bool (*CheckComposite) (int op,
PicturePtr pSrcPicture,
PicturePtr pMaskPicture,
PicturePtr pDstPicture);
/**
* PrepareComposite() sets up the driver for doing a Composite operation
* described in the Render extension protocol spec.
*
* @param op Render operation
* @param pSrcPicture source Picture
* @param pMaskPicture mask picture
* @param pDstPicture destination Picture
* @param pSrc source pixmap
* @param pMask mask pixmap
* @param pDst destination pixmap
*
* This call should set up the driver for doing a series of Composite
* operations, as described in the Render protocol spec, with the given
* pSrcPicture, pMaskPicture, and pDstPicture. The pSrc, pMask, and
* pDst are the pixmaps containing the pixel data, and should be used for
* setting the offset and pitch used for the coordinate spaces for each of
* the Pictures.
*
* Notes on interpreting Picture structures:
* - The Picture structures will always have a valid pDrawable.
* - The Picture structures will never have alphaMap set.
* - The mask Picture (and therefore pMask) may be NULL, in which case the
* operation is simply src OP dst instead of src IN mask OP dst, and
* mask coordinates should be ignored.
* - pMarkPicture may have componentAlpha set, which greatly changes
* the behavior of the Composite operation. componentAlpha has no effect
* when set on pSrcPicture or pDstPicture.
* - The source and mask Pictures may have a transformation set
* (Picture->transform != NULL), which means that the source coordinates
* should be transformed by that transformation, resulting in scaling,
* rotation, etc. The PictureTransformPoint() call can transform
* coordinates for you. Transforms have no effect on Pictures when used
* as a destination.
* - The source and mask pictures may have a filter set. PictFilterNearest
* and PictFilterBilinear are defined in the Render protocol, but others
* may be encountered, and must be handled correctly (usually by
* PrepareComposite failing, and falling back to software). Filters have
* no effect on Pictures when used as a destination.
* - The source and mask Pictures may have repeating set, which must be
* respected. Many chipsets will be unable to support repeating on
* pixmaps that have a width or height that is not a power of two.
*
* If your hardware can't support source pictures (textures) with
* non-power-of-two pitches, you should set #EXA_OFFSCREEN_ALIGN_POT.
*
* Note that many drivers will need to store some of the data in the driver
* private record, for sending to the hardware with each drawing command.
*
* The PrepareComposite() call is not required. However, it is highly
* recommended for performance of antialiased font rendering and performance
* of cairo applications. Failure results in a fallback to software
* rendering.
*/
Bool (*PrepareComposite) (int op,
PicturePtr pSrcPicture,
PicturePtr pMaskPicture,
PicturePtr pDstPicture,
PixmapPtr pSrc,
PixmapPtr pMask,
PixmapPtr pDst);
/**
* Composite() performs a Composite operation set up in the last
* PrepareComposite() call.
*
* @param pDstPixmap destination pixmap
* @param srcX source X coordinate
* @param srcY source Y coordinate
* @param maskX source X coordinate
* @param maskY source Y coordinate
* @param dstX destination X coordinate
* @param dstY destination Y coordinate
* @param width destination rectangle width
* @param height destination rectangle height
*
* Performs the Composite operation set up by the last PrepareComposite()
* call, to the rectangle from (dstX, dstY) to (dstX + width, dstY + height)
* in the destination Pixmap. Note that if a transformation was set on
* the source or mask Pictures, the source rectangles may not be the same
* size as the destination rectangles and filtering. Getting the coordinate
* transformation right at the subpixel level can be tricky, and rendercheck
* can test this for you.
*
* This call is required if PrepareComposite() ever succeeds.
*/
void (*Composite) (PixmapPtr pDst,
int srcX,
int srcY,
int maskX,
int maskY,
int dstX,
int dstY,
int width,
int height);
/**
* DoneComposite() finishes a set of Composite operations.
*
* @param pPixmap destination pixmap.
*
* The DoneComposite() call is called at the end of a series of consecutive
* Composite() calls following a successful PrepareComposite(). This allows
* drivers to finish up emitting drawing commands that were buffered, or
* clean up state from PrepareComposite().
*
* This call is required if PrepareComposite() ever succeeds.
*/
void (*DoneComposite) (PixmapPtr pDst);
/** @} */
/**
* UploadToScreen() loads a rectangle of data from src into pDst.
*
* @param pDst destination pixmap
* @param x destination X coordinate.
* @param y destination Y coordinate
* @param width width of the rectangle to be copied
* @param height height of the rectangle to be copied
* @param src pointer to the beginning of the source data
* @param src_pitch pitch (in bytes) of the lines of source data.
*
* UploadToScreen() copies data in system memory beginning at src (with
* pitch src_pitch) into the destination pixmap from (x, y) to
* (x + width, y + height). This is typically done with hostdata uploads,
* where the CPU sets up a blit command on the hardware with instructions
* that the blit data will be fed through some sort of aperture on the card.
*
* If UploadToScreen() is performed asynchronously, it is up to the driver
* to call exaMarkSync(). This is in contrast to most other acceleration
* calls in EXA.
*
* UploadToScreen() can aid in pixmap migration, but is most important for
* the performance of exaGlyphs() (antialiased font drawing) by allowing
* pipelining of data uploads, avoiding a sync of the card after each glyph.
*
* @return TRUE if the driver successfully uploaded the data. FALSE
* indicates that EXA should fall back to doing the upload in software.
*
* UploadToScreen() is not required, but is recommended if Composite
* acceleration is supported.
*/
Bool (*UploadToScreen) (PixmapPtr pDst,
int x,
int y,
int w,
int h,
char *src,
int src_pitch);
/**
* UploadToScratch() is used to upload a pixmap to a scratch area for
* acceleration.
*
* @param pSrc source pixmap in host memory
* @param pDst fake, scratch pixmap to be set up in offscreen memory.
*
* The UploadToScratch() call was added to support Xati before Xati had
* support for hostdata uploads and before exaGlyphs() was written. It
* behaves incorrectly (uses an invalid pixmap as pDst),
* and UploadToScreen() should be implemented instead.
*
* Drivers implementing UploadToScratch() had to set up space (likely in a
* statically allocated area) in offscreen memory, copy pSrc to that
* scratch area, and adust pDst->devKind for the pitch and
* pDst->devPrivate.ptr for the pointer to that scratch area. The driver
* was responsible for syncing (as it was implemented using memcpy() in
* Xati), and only the data from the last UploadToScratch() was guaranteed
* to be valid at any given time.
*
* UploadToScratch() should not be implemented by drivers, and will likely
* be removed in a future version of EXA.
*/
Bool (*UploadToScratch) (PixmapPtr pSrc,
PixmapPtr pDst);
/**
* DownloadFromScreen() loads a rectangle of data from pSrc into dst
*
* @param pSrc source pixmap
* @param x source X coordinate.
* @param y source Y coordinate
* @param width width of the rectangle to be copied
* @param height height of the rectangle to be copied
* @param dst pointer to the beginning of the destination data
* @param dst_pitch pitch (in bytes) of the lines of destination data.
*
* DownloadFromScreen() copies data from offscreen memory in pSrc from
* (x, y) to (x + width, y + height), to system memory starting at
* dst (with pitch dst_pitch). This would usually be done
* using scatter-gather DMA, supported by a DRM call, or by blitting to AGP
* and then synchronously reading from AGP. Because the implementation
* might be synchronous, EXA leaves it up to the driver to call
* exaMarkSync() if DownloadFromScreen() was asynchronous. This is in
* contrast to most other acceleration calls in EXA.
*
* DownloadFromScreen() can aid in the largest bottleneck in pixmap
* migration, which is the read from framebuffer when evicting pixmaps from
* framebuffer memory. Thus, it is highly recommended, even though
* implementations are typically complicated.
*
* @return TRUE if the driver successfully downloaded the data. FALSE
* indicates that EXA should fall back to doing the download in software.
*
* DownloadFromScreen() is not required, but is highly recommended.
*/
Bool (*DownloadFromScreen)(PixmapPtr pSrc,
int x, int y,
int w, int h,
char *dst, int dst_pitch);
/**
* MarkSync() requests that the driver mark a synchronization point,
* returning an driver-defined integer marker which could be requested for
* synchronization to later in WaitMarker(). This might be used in the
* future to avoid waiting for full hardware stalls before accessing pixmap
* data with the CPU, but is not important in the current incarnation of
* EXA.
*
* Note that drivers should call exaMarkSync() when they have done some
* acceleration, rather than their own MarkSync() handler, as otherwise EXA
* will be unaware of the driver's acceleration and not sync to it during
* fallbacks.
*
* MarkSync() is optional.
*/
int (*MarkSync) (ScreenPtr pScreen);
/**
* WaitMarker() waits for all rendering before the given marker to have
* completed. If the driver does not implement MarkSync(), marker is
* meaningless, and all rendering by the hardware should be completed before
* WaitMarker() returns.
*
* Note that drivers should call exaWaitSync() to wait for all acceleration
* to finish, as otherwise EXA will be unaware of the driver having
* synchronized, resulting in excessive WaitMarker() calls.
*
* WaitMarker() is required of all drivers.
*/
void (*WaitMarker) (ScreenPtr pScreen, int marker);
/** @{ */
/**
* PrepareAccess() is called before CPU access to an offscreen pixmap.
*
* @param pPix the pixmap being accessed
* @param index the index of the pixmap being accessed.
*
* PrepareAccess() will be called before CPU access to an offscreen pixmap.
* This can be used to set up hardware surfaces for byteswapping or
* untiling, or to adjust the pixmap's devPrivate.ptr for the purpose of
* making CPU access use a different aperture.
*
* The index is one of #EXA_PREPARE_DEST, #EXA_PREPARE_SRC, or
* #EXA_PREPARE_MASK, indicating which pixmap is in question. Since only up
* to three pixmaps will have PrepareAccess() called on them per operation,
* drivers can have a small, statically-allocated space to maintain state
* for PrepareAccess() and FinishAccess() in. Note that the same pixmap may
* have PrepareAccess() called on it more than once, for example when doing
* a copy within the same pixmap (so it gets PrepareAccess as()
* #EXA_PREPARE_DEST and then as #EXA_PREPARE_SRC).
*
* PrepareAccess() may fail. An example might be the case of hardware that
* can set up 1 or 2 surfaces for CPU access, but not 3. If PrepareAccess()
* fails, EXA will migrate the pixmap to system memory.
* DownloadFromScreen() must be implemented and must not fail if a driver
* wishes to fail in PrepareAccess(). PrepareAccess() must not fail when
* pPix is the visible screen, because the visible screen can not be
* migrated.
*
* @return TRUE if PrepareAccess() successfully prepared the pixmap for CPU
* drawing.
* @return FALSE if PrepareAccess() is unsuccessful and EXA should use
* DownloadFromScreen() to migate the pixmap out.
*/
Bool (*PrepareAccess)(PixmapPtr pPix, int index);
/**
* FinishAccess() is called after CPU access to an offscreen pixmap.
*
* @param pPix the pixmap being accessed
* @param index the index of the pixmap being accessed.
*
* FinishAccess() will be called after finishing CPU access of an offscreen
* pixmap set up by PrepareAccess(). Note that the FinishAccess() will not be
* called if PrepareAccess() failed and the pixmap was migrated out.
*/
void (*FinishAccess)(PixmapPtr pPix, int index);
/**
* PixmapIsOffscreen() is an optional driver replacement to
* exaPixmapIsOffscreen(). Set to NULL if you want the standard behaviour
* of exaPixmapIsOffscreen().
*
* @param pPix the pixmap
* @return TRUE if the given drawable is in framebuffer memory.
*
* exaPixmapIsOffscreen() is used to determine if a pixmap is in offscreen
* memory, meaning that acceleration could probably be done to it, and that it
* will need to be wrapped by PrepareAccess()/FinishAccess() when accessing it
* with the CPU.
*
*
*/
Bool (*PixmapIsOffscreen)(PixmapPtr pPix);
/** @name PrepareAccess() and FinishAccess() indices
* @{
*/
/**
* EXA_PREPARE_DEST is the index for a pixmap that may be drawn to or
* read from.
*/
#define EXA_PREPARE_DEST 0
/**
* EXA_PREPARE_SRC is the index for a pixmap that may be read from
*/
#define EXA_PREPARE_SRC 1
/**
* EXA_PREPARE_SRC is the index for a second pixmap that may be read
* from.
*/
#define EXA_PREPARE_MASK 2
/** @} */
/** @} */
} ExaDriverRec, *ExaDriverPtr;
/** @name EXA driver flags
* @{
*/
/**
* EXA_OFFSCREEN_PIXMAPS indicates to EXA that the driver can support
* offscreen pixmaps.
*/
#define EXA_OFFSCREEN_PIXMAPS (1 << 0)
/**
* EXA_OFFSCREEN_ALIGN_POT indicates to EXA that the driver needs pixmaps
* to have a power-of-two pitch.
*/
#define EXA_OFFSCREEN_ALIGN_POT (1 << 1)
/**
* EXA_TWO_BITBLT_DIRECTIONS indicates to EXA that the driver can only
* support copies that are (left-to-right, top-to-bottom) or
* (right-to-left, bottom-to-top).
*/
#define EXA_TWO_BITBLT_DIRECTIONS (1 << 2)
/** @} */
ExaDriverPtr
exaDriverAlloc(void);
Bool
exaDriverInit(ScreenPtr pScreen,
ExaDriverPtr pScreenInfo);
void
exaDriverFini(ScreenPtr pScreen);
void
exaMarkSync(ScreenPtr pScreen);
void
exaWaitSync(ScreenPtr pScreen);
ExaOffscreenArea *
exaOffscreenAlloc(ScreenPtr pScreen, int size, int align,
Bool locked,
ExaOffscreenSaveProc save,
pointer privData);
ExaOffscreenArea *
exaOffscreenFree(ScreenPtr pScreen, ExaOffscreenArea *area);
void
ExaOffscreenMarkUsed (PixmapPtr pPixmap);
unsigned long
exaGetPixmapOffset(PixmapPtr pPix);
unsigned long
exaGetPixmapPitch(PixmapPtr pPix);
unsigned long
exaGetPixmapSize(PixmapPtr pPix);
void
exaEnableDisableFBAccess (int index, Bool enable);
void
exaMoveInPixmap (PixmapPtr pPixmap);
void
exaMoveOutPixmap (PixmapPtr pPixmap);
/**
* Returns TRUE if the given planemask covers all the significant bits in the
* pixel values for pDrawable.
*/
#define EXA_PM_IS_SOLID(_pDrawable, _pm) \
(((_pm) & FbFullMask((_pDrawable)->depth)) == \
FbFullMask((_pDrawable)->depth))
#endif /* EXA_H */
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