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/*
*
* 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.
*/
#ifndef EXA_H
#define EXA_H
#include "scrnintstr.h"
#include "pixmapstr.h"
#include "windowstr.h"
#include "gcstruct.h"
#include "picturestr.h"
#define EXA_VERSION_MAJOR 2
#define EXA_VERSION_MINOR 0
#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;
/* These are here because I don't want to be adding more to
* ScrnInfoRec */
CARD8 *memoryBase;
unsigned long offScreenBase;
/* It's fix.smem_len.
This one could be potentially substituted by ScrnInfoRec
videoRam member, but I do not want to be doing the silly
<< 10, >>10 all over the place */
unsigned long memorySize;
int pixmapOffsetAlign;
int pixmapPitchAlign;
int flags;
/* The coordinate limitations for rendering for this hardware.
* Exa breaks larger pixmaps into smaller pieces and calls Prepare multiple times
* to handle larger pixmaps
*/
int maxX;
int maxY;
/* private */
ExaOffscreenArea *offScreenAreas;
Bool needsSync;
int lastMarker;
/* PrepareSolid may fail if the pixmaps can't be accelerated to/from.
* This is an important feature for handling strange corner cases
* in hardware that are poorly expressed through flags.
*/
Bool (*PrepareSolid) (PixmapPtr pPixmap,
int alu,
Pixel planemask,
Pixel fg);
void (*Solid) (PixmapPtr pPixmap, int x1, int y1, int x2, int y2);
void (*DoneSolid) (PixmapPtr pPixmap);
/* PrepareSolid may fail if the pixmaps can't be accelerated to/from.
* This is an important feature for handling strange corner cases
* in hardware that are poorly expressed through flags.
*/
Bool (*PrepareCopy) (PixmapPtr pSrcPixmap,
PixmapPtr pDstPixmap,
int dx,
int dy,
int alu,
Pixel planemask);
void (*Copy) (PixmapPtr pDstPixmap,
int srcX,
int srcY,
int dstX,
int dstY,
int width,
int height);
void (*DoneCopy) (PixmapPtr pDstPixmap);
/* The Composite hooks are a wrapper around the Composite operation.
* The CheckComposite occurs before pixmap migration occurs,
* and may fail for many hardware-dependent reasons.
* PrepareComposite should not fail, and the Bool return may
* not be necessary if we can
* adequately represent pixmap location/pitch limitations..
*/
Bool (*CheckComposite) (int op,
PicturePtr pSrcPicture,
PicturePtr pMaskPicture,
PicturePtr pDstPicture);
Bool (*PrepareComposite) (int op,
PicturePtr pSrcPicture,
PicturePtr pMaskPicture,
PicturePtr pDstPicture,
PixmapPtr pSrc,
PixmapPtr pMask,
PixmapPtr pDst);
void (*Composite) (PixmapPtr pDst,
int srcX,
int srcY,
int maskX,
int maskY,
int dstX,
int dstY,
int width,
int height);
void (*DoneComposite) (PixmapPtr pDst);
/* Attempt to upload the data from src into the rectangle of the
* in-framebuffer pDst beginning at x,y and of width w,h. May fail.
*/
Bool (*UploadToScreen) (PixmapPtr pDst,
int x,
int y,
int w,
int h,
char *src,
int src_pitch);
Bool (*UploadToScratch) (PixmapPtr pSrc,
PixmapPtr pDst);
/* Attempt to download the rectangle from the in-framebuffer pSrc into
* dst, given the pitch. May fail. Since it is likely
* accelerated, a markSync will follow it as with other acceleration
* hooks.
*/
Bool (*DownloadFromScreen)(PixmapPtr pSrc,
int x, int y,
int w, int h,
char *dst, int dst_pitch);
/* Should return a hrdware-dependent marker number which can
* be waited for with WaitMarker. It can be not implemented in which
* case WaitMarker must wait for idle on any given marker
* number.
*/
int (*MarkSync) (ScreenPtr pScreen);
void (*WaitMarker) (ScreenPtr pScreen, int marker);
/* These are wrapping all fb or composite operations that will cause
* a direct access to the framebuffer. You can use them to update
* endian swappers, force migration to RAM, or whatever else you find
* useful at this point. EXA can stack up to 3 calls to Prepare/Finish
* access, though they will have a different index. If your hardware
* doesn't have enough separate configurable swapper, you can return
* FALSE from PrepareAccess() to force EXA to migrate the pixmap to RAM.
* Note that DownloadFromScreen and UploadToScreen can both be called
* between PrepareAccess() and FinishAccess(). If they need to use a
* swapper, they should save & restore its setting.
*/
Bool (*PrepareAccess)(PixmapPtr pPix, int index);
void (*FinishAccess)(PixmapPtr pPix, int index);
#define EXA_PREPARE_DEST 0
#define EXA_PREPARE_SRC 1
#define EXA_PREPARE_MASK 2
} ExaDriverRec, *ExaDriverPtr;
#define EXA_OFFSCREEN_PIXMAPS (1 << 0)
#define EXA_OFFSCREEN_ALIGN_POT (1 << 1)
#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);
Bool
exaOffscreenInit(ScreenPtr pScreen);
ExaOffscreenArea *
exaOffscreenAlloc(ScreenPtr pScreen, int size, int align,
Bool locked,
ExaOffscreenSaveProc save,
pointer privData);
ExaOffscreenArea *
exaOffscreenFree(ScreenPtr pScreen, ExaOffscreenArea *area);
unsigned long
exaGetPixmapOffset(PixmapPtr pPix);
unsigned long
exaGetPixmapPitch(PixmapPtr pPix);
unsigned long
exaGetPixmapSize(PixmapPtr pPix);
void
exaEnableDisableFBAccess (int index, Bool enable);
#endif /* EXA_H */
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