12994b9afb
causing our search loop for evictable blocks to possibly skip a good
candiate, and another was the allocator would occasionally use
area->offset as if it was the base of the pixmap, while for a pixmap
that is not in available state, it is not. This caused some funny
miscalculation leading to overlapping pixmaps and accesses beyond the
end of the framebuffer. To make things cleared, I renamed save_offset
to base_offset, made sure it's the one used everywhere in the
allocator, and only align "offset" for the client at the end of
exaOffscreenAlloc().
266 lines
9.9 KiB
C
266 lines
9.9 KiB
C
/*
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*
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* Copyright (C) 2000 Keith Packard
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* 2004 Eric Anholt
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* 2005 Zack Rusin
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of copyright holders not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Copyright holders make no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#ifndef EXA_H
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#define EXA_H
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#include "scrnintstr.h"
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#include "pixmapstr.h"
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#include "windowstr.h"
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#include "gcstruct.h"
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#include "picturestr.h"
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#define EXA_VERSION_MAJOR 0
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#define EXA_VERSION_MINOR 2
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#define EXA_VERSION_RELEASE 0
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typedef struct _ExaOffscreenArea ExaOffscreenArea;
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typedef void (*ExaOffscreenSaveProc) (ScreenPtr pScreen, ExaOffscreenArea *area);
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typedef enum _ExaOffscreenState {
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ExaOffscreenAvail,
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ExaOffscreenRemovable,
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ExaOffscreenLocked
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} ExaOffscreenState;
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struct _ExaOffscreenArea {
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int base_offset; /* allocation base */
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int offset; /* aligned offset */
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int size; /* total allocation size */
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int score;
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pointer privData;
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ExaOffscreenSaveProc save;
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ExaOffscreenState state;
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ExaOffscreenArea *next;
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};
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typedef struct _ExaCardInfo {
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/* These are here because I don't want to be adding more to
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* ScrnInfoRec */
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CARD8 *memoryBase;
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unsigned long offScreenBase;
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/* It's fix.smem_len.
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This one could be potentially substituted by ScrnInfoRec
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videoRam member, but I do not want to be doing the silly
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<< 10, >>10 all over the place */
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unsigned long memorySize;
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int pixmapOffsetAlign;
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int pixmapPitchAlign;
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int flags;
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/* The coordinate limitations for rendering for this hardware.
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* Exa breaks larger pixmaps into smaller pieces and calls Prepare multiple times
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* to handle larger pixmaps
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*/
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int maxX;
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int maxY;
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/* private */
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ExaOffscreenArea *offScreenAreas;
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Bool needsSync;
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int lastMarker;
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} ExaCardInfoRec, *ExaCardInfoPtr;
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typedef struct _ExaAccelInfo {
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/* PrepareSolid may fail if the pixmaps can't be accelerated to/from.
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* This is an important feature for handling strange corner cases
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* in hardware that are poorly expressed through flags.
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*/
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Bool (*PrepareSolid) (PixmapPtr pPixmap,
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int alu,
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Pixel planemask,
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Pixel fg);
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void (*Solid) (PixmapPtr pPixmap, int x1, int y1, int x2, int y2);
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void (*DoneSolid) (PixmapPtr pPixmap);
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/* PrepareSolid may fail if the pixmaps can't be accelerated to/from.
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* This is an important feature for handling strange corner cases
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* in hardware that are poorly expressed through flags.
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*/
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Bool (*PrepareCopy) (PixmapPtr pSrcPixmap,
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PixmapPtr pDstPixmap,
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int dx,
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int dy,
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int alu,
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Pixel planemask);
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void (*Copy) (PixmapPtr pDstPixmap,
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int srcX,
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int srcY,
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int dstX,
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int dstY,
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int width,
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int height);
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void (*DoneCopy) (PixmapPtr pDstPixmap);
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/* The Composite hooks are a wrapper around the Composite operation.
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* The CheckComposite occurs before pixmap migration occurs,
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* and may fail for many hardware-dependent reasons.
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* PrepareComposite should not fail, and the Bool return may
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* not be necessary if we can
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* adequately represent pixmap location/pitch limitations..
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*/
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Bool (*CheckComposite) (int op,
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PicturePtr pSrcPicture,
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PicturePtr pMaskPicture,
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PicturePtr pDstPicture);
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Bool (*PrepareComposite) (int op,
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PicturePtr pSrcPicture,
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PicturePtr pMaskPicture,
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PicturePtr pDstPicture,
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PixmapPtr pSrc,
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PixmapPtr pMask,
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PixmapPtr pDst);
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void (*Composite) (PixmapPtr pDst,
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int srcX,
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int srcY,
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int maskX,
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int maskY,
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int dstX,
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int dstY,
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int width,
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int height);
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void (*DoneComposite) (PixmapPtr pDst);
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/* Attempt to upload the data from src into the rectangle of the
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* in-framebuffer pDst beginning at x,y and of width w,h. May fail.
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*/
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Bool (*UploadToScreen) (PixmapPtr pDst,
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int x,
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int y,
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int w,
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int h,
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char *src,
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int src_pitch);
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Bool (*UploadToScratch) (PixmapPtr pSrc,
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PixmapPtr pDst);
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/* Attempt to download the rectangle from the in-framebuffer pSrc into
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* dst, given the pitch. May fail. Since it is likely
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* accelerated, a markSync will follow it as with other acceleration
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* hooks.
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*/
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Bool (*DownloadFromScreen)(PixmapPtr pSrc,
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int x, int y,
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int w, int h,
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char *dst, int dst_pitch);
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/* Should return a hrdware-dependent marker number which can
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* be waited for with WaitMarker. It can be not implemented in which
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* case WaitMarker must wait for idle on any given marker
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* number.
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*/
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int (*MarkSync) (ScreenPtr pScreen);
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void (*WaitMarker) (ScreenPtr pScreen, int marker);
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/* These are wrapping all fb or composite operations that will cause
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* a direct access to the framebuffer. You can use them to update
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* endian swappers, force migration to RAM, or whatever else you find
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* useful at this point. EXA can stack up to 3 calls to Prepare/Finish
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* access, though they will have a different index. If your hardware
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* doesn't have enough separate configurable swapper, you can return
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* FALSE from PrepareAccess() to force EXA to migrate the pixmap to RAM.
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* Note that DownloadFromScreen and UploadToScreen can both be called
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* between PrepareAccess() and FinishAccess(). If they need to use a
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* swapper, they should save & restore its setting.
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*/
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Bool (*PrepareAccess)(PixmapPtr pPix, int index);
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void (*FinishAccess)(PixmapPtr pPix, int index);
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#define EXA_PREPARE_DEST 0
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#define EXA_PREPARE_SRC 1
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#define EXA_PREPARE_MASK 2
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} ExaAccelInfoRec, *ExaAccelInfoPtr;
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typedef struct _ExaDriver {
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ExaCardInfoRec card;
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ExaAccelInfoRec accel;
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} ExaDriverRec, *ExaDriverPtr;
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#define EXA_OFFSCREEN_PIXMAPS (1 << 0)
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#define EXA_OFFSCREEN_ALIGN_POT (1 << 1)
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#define EXA_MAKE_VERSION(a, b, c) (((a) << 16) | ((b) << 8) | (c))
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#define EXA_VERSION \
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EXA_MAKE_VERSION(EXA_VERSION_MAJOR, EXA_VERSION_MINOR, EXA_VERSION_RELEASE)
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#define EXA_IS_VERSION(a,b,c) (EXA_VERSION >= EXA_MAKE_VERSION(a,b,c))
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unsigned int
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exaGetVersion(void);
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Bool
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exaDriverInit(ScreenPtr pScreen,
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ExaDriverPtr pScreenInfo);
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void
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exaDriverFini(ScreenPtr pScreen);
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void
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exaMarkSync(ScreenPtr pScreen);
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void
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exaWaitSync(ScreenPtr pScreen);
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Bool
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exaOffscreenInit(ScreenPtr pScreen);
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ExaOffscreenArea *
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exaOffscreenAlloc(ScreenPtr pScreen, int size, int align,
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Bool locked,
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ExaOffscreenSaveProc save,
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pointer privData);
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ExaOffscreenArea *
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exaOffscreenFree(ScreenPtr pScreen, ExaOffscreenArea *area);
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unsigned long
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exaGetPixmapOffset(PixmapPtr pPix);
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unsigned long
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exaGetPixmapPitch(PixmapPtr pPix);
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unsigned long
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exaGetPixmapSize(PixmapPtr pPix);
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#define exaInitCard(exa, sync, memory_base, off_screen_base, memory_size, \
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offscreen_byte_align, offscreen_pitch, flags, \
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max_x, max_y) \
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(exa)->card.Sync = sync; \
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(exa)->card.memoryBase = memory_base; \
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(exa)->card.offScreenBase = off_screen_base; \
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(exa)->card.memorySize = memory_size; \
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(exa)->card.offscreenByteAlign = offscreen_byte_align; \
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(exa)->card.offscreenPitch = offscreen_pitch; \
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(exa)->card.flags = flags; \
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(exa)->card.maxX = max_x; \
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(exa)->card.maxY = max_y
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#endif /* EXA_H */
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