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/*
* Copyright � 2006 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include "ephyr.h"
#include "exa_priv.h"
#include "fbpict.h"
#define EPHYR_TRACE_DRAW 0
#if EPHYR_TRACE_DRAW
#define TRACE_DRAW() ErrorF("%s\n", __FUNCTION__);
#else
#define TRACE_DRAW() do { } while (0)
#endif
/* Use some oddball alignments, to expose issues in alignment handling in EXA. */
#define EPHYR_OFFSET_ALIGN 24
#define EPHYR_PITCH_ALIGN 24
#define EPHYR_OFFSCREEN_SIZE (16 * 1024 * 1024)
#define EPHYR_OFFSCREEN_BASE (1 * 1024 * 1024)
/**
* Forces a real devPrivate.ptr for hidden pixmaps, so that we can call down to
* fb functions.
*/
static void
ephyrPreparePipelinedAccess(PixmapPtr pPix, int index)
{
KdScreenPriv(pPix->drawable.pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
assert(fakexa->saved_ptrs[index] == NULL);
fakexa->saved_ptrs[index] = pPix->devPrivate.ptr;
if (pPix->devPrivate.ptr != NULL)
return;
pPix->devPrivate.ptr = fakexa->exa->memoryBase + exaGetPixmapOffset(pPix);
}
/**
* Restores the original devPrivate.ptr of the pixmap from before we messed with
* it.
*/
static void
ephyrFinishPipelinedAccess(PixmapPtr pPix, int index)
{
KdScreenPriv(pPix->drawable.pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
pPix->devPrivate.ptr = fakexa->saved_ptrs[index];
fakexa->saved_ptrs[index] = NULL;
}
/**
* Sets up a scratch GC for fbFill, and saves other parameters for the
* ephyrSolid implementation.
*/
static Bool
ephyrPrepareSolid(PixmapPtr pPix, int alu, Pixel pm, Pixel fg)
{
ScreenPtr pScreen = pPix->drawable.pScreen;
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
CARD32 tmpval[3];
ephyrPreparePipelinedAccess(pPix, EXA_PREPARE_DEST);
fakexa->pDst = pPix;
fakexa->pGC = GetScratchGC(pPix->drawable.depth, pScreen);
tmpval[0] = alu;
tmpval[1] = pm;
tmpval[2] = fg;
ChangeGC(fakexa->pGC, GCFunction | GCPlaneMask | GCForeground,
tmpval);
ValidateGC(&pPix->drawable, fakexa->pGC);
TRACE_DRAW();
return TRUE;
}
/**
* Does an fbFill of the rectangle to be drawn.
*/
static void
ephyrSolid(PixmapPtr pPix, int x1, int y1, int x2, int y2)
{
ScreenPtr pScreen = pPix->drawable.pScreen;
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
fbFill(&fakexa->pDst->drawable, fakexa->pGC, x1, y1, x2 - x1, y2 - y1);
}
/**
* Cleans up the scratch GC created in ephyrPrepareSolid.
*/
static void
ephyrDoneSolid(PixmapPtr pPix)
{
ScreenPtr pScreen = pPix->drawable.pScreen;
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
FreeScratchGC(fakexa->pGC);
ephyrFinishPipelinedAccess(pPix, EXA_PREPARE_DEST);
}
/**
* Sets up a scratch GC for fbCopyArea, and saves other parameters for the
* ephyrCopy implementation.
*/
static Bool
ephyrPrepareCopy(PixmapPtr pSrc, PixmapPtr pDst, int dx, int dy, int alu,
Pixel pm)
{
ScreenPtr pScreen = pDst->drawable.pScreen;
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
CARD32 tmpval[2];
ephyrPreparePipelinedAccess(pDst, EXA_PREPARE_DEST);
ephyrPreparePipelinedAccess(pSrc, EXA_PREPARE_SRC);
fakexa->pSrc = pSrc;
fakexa->pDst = pDst;
fakexa->pGC = GetScratchGC(pDst->drawable.depth, pScreen);
tmpval[0] = alu;
tmpval[1] = pm;
ChangeGC (fakexa->pGC, GCFunction | GCPlaneMask, tmpval);
ValidateGC(&pDst->drawable, fakexa->pGC);
TRACE_DRAW();
return TRUE;
}
/**
* Does an fbCopyArea to take care of the requested copy.
*/
static void
ephyrCopy(PixmapPtr pDst, int srcX, int srcY, int dstX, int dstY, int w, int h)
{
ScreenPtr pScreen = pDst->drawable.pScreen;
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
fbCopyArea(&fakexa->pSrc->drawable, &fakexa->pDst->drawable, fakexa->pGC,
srcX, srcY, w, h, dstX, dstY);
}
/**
* Cleans up the scratch GC created in ephyrPrepareCopy.
*/
static void
ephyrDoneCopy(PixmapPtr pDst)
{
ScreenPtr pScreen = pDst->drawable.pScreen;
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
FreeScratchGC (fakexa->pGC);
ephyrFinishPipelinedAccess(fakexa->pSrc, EXA_PREPARE_SRC);
ephyrFinishPipelinedAccess(fakexa->pDst, EXA_PREPARE_DEST);
}
/**
* Reports that we can always accelerate the given operation. This may not be
* desirable from an EXA testing standpoint -- testing the fallback paths would
* be useful, too.
*/
static Bool
ephyrCheckComposite(int op, PicturePtr pSrcPicture, PicturePtr pMaskPicture,
PicturePtr pDstPicture)
{
/* Exercise the component alpha helper, so fail on this case like a normal
* driver
*/
if (pMaskPicture && pMaskPicture->componentAlpha && op == PictOpOver)
return FALSE;
return TRUE;
}
/**
* Saves off the parameters for ephyrComposite.
*/
static Bool
ephyrPrepareComposite(int op, PicturePtr pSrcPicture, PicturePtr pMaskPicture,
PicturePtr pDstPicture, PixmapPtr pSrc, PixmapPtr pMask,
PixmapPtr pDst)
{
KdScreenPriv(pDst->drawable.pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
ephyrPreparePipelinedAccess(pDst, EXA_PREPARE_DEST);
ephyrPreparePipelinedAccess(pSrc, EXA_PREPARE_SRC);
if (pMask != NULL)
ephyrPreparePipelinedAccess(pMask, EXA_PREPARE_MASK);
fakexa->op = op;
fakexa->pSrcPicture = pSrcPicture;
fakexa->pMaskPicture = pMaskPicture;
fakexa->pDstPicture = pDstPicture;
fakexa->pSrc = pSrc;
fakexa->pMask = pMask;
fakexa->pDst = pDst;
TRACE_DRAW();
return TRUE;
}
/**
* Does an fbComposite to complete the requested drawing operation.
*/
static void
ephyrComposite(PixmapPtr pDst, int srcX, int srcY, int maskX, int maskY,
int dstX, int dstY, int w, int h)
{
KdScreenPriv(pDst->drawable.pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
fbComposite(fakexa->op, fakexa->pSrcPicture, fakexa->pMaskPicture,
fakexa->pDstPicture, srcX, srcY, maskX, maskY, dstX, dstY,
w, h);
}
static void
ephyrDoneComposite(PixmapPtr pDst)
{
KdScreenPriv(pDst->drawable.pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
if (fakexa->pMask != NULL)
ephyrFinishPipelinedAccess(fakexa->pMask, EXA_PREPARE_MASK);
ephyrFinishPipelinedAccess(fakexa->pSrc, EXA_PREPARE_SRC);
ephyrFinishPipelinedAccess(fakexa->pDst, EXA_PREPARE_DEST);
}
/**
* Does fake acceleration of DownloadFromScren using memcpy.
*/
static Bool
ephyrDownloadFromScreen(PixmapPtr pSrc, int x, int y, int w, int h, char *dst,
int dst_pitch)
{
KdScreenPriv(pSrc->drawable.pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
unsigned char *src;
int src_pitch, cpp;
if (pSrc->drawable.bitsPerPixel < 8)
return FALSE;
ephyrPreparePipelinedAccess(pSrc, EXA_PREPARE_SRC);
cpp = pSrc->drawable.bitsPerPixel / 8;
src_pitch = exaGetPixmapPitch(pSrc);
src = fakexa->exa->memoryBase + exaGetPixmapOffset(pSrc);
src += y * src_pitch + x * cpp;
for (; h > 0; h--) {
memcpy(dst, src, w * cpp);
dst += dst_pitch;
src += src_pitch;
}
exaMarkSync(pSrc->drawable.pScreen);
ephyrFinishPipelinedAccess(pSrc, EXA_PREPARE_SRC);
return TRUE;
}
/**
* Does fake acceleration of UploadToScreen using memcpy.
*/
static Bool
ephyrUploadToScreen(PixmapPtr pDst, int x, int y, int w, int h, char *src,
int src_pitch)
{
KdScreenPriv(pDst->drawable.pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
unsigned char *dst;
int dst_pitch, cpp;
if (pDst->drawable.bitsPerPixel < 8)
return FALSE;
ephyrPreparePipelinedAccess(pDst, EXA_PREPARE_DEST);
cpp = pDst->drawable.bitsPerPixel / 8;
dst_pitch = exaGetPixmapPitch(pDst);
dst = fakexa->exa->memoryBase + exaGetPixmapOffset(pDst);
dst += y * dst_pitch + x * cpp;
for (; h > 0; h--) {
memcpy(dst, src, w * cpp);
dst += dst_pitch;
src += src_pitch;
}
exaMarkSync(pDst->drawable.pScreen);
ephyrFinishPipelinedAccess(pDst, EXA_PREPARE_DEST);
return TRUE;
}
static Bool
ephyrPrepareAccess(PixmapPtr pPix, int index)
{
/* Make sure we don't somehow end up with a pointer that is in framebuffer
* and hasn't been readied for us.
*/
assert(pPix->devPrivate.ptr != NULL);
return TRUE;
}
/**
* In fakexa, we currently only track whether we have synced to the latest
* "accelerated" drawing that has happened or not. It's not used for anything
* yet.
*/
static int
ephyrMarkSync(ScreenPtr pScreen)
{
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
fakexa->is_synced = FALSE;
return 0;
}
/**
* Assumes that we're waiting on the latest marker. When EXA gets smarter and
* starts using markers in a fine-grained way (for example, waiting on drawing
* to required pixmaps to complete, rather than waiting for all drawing to
* complete), we'll want to make the ephyrMarkSync/ephyrWaitMarker
* implementation fine-grained as well.
*/
static void
ephyrWaitMarker(ScreenPtr pScreen, int marker)
{
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa = scrpriv->fakexa;
fakexa->is_synced = TRUE;
}
/**
* This function initializes EXA to use the fake acceleration implementation
* which just falls through to software. The purpose is to have a reliable,
* correct driver with which to test changes to the EXA core.
*/
Bool
ephyrDrawInit(ScreenPtr pScreen)
{
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
EphyrScrPriv *scrpriv = screen->driver;
EphyrFakexaPriv *fakexa;
Bool success;
fakexa = xcalloc(1, sizeof(*fakexa));
if (fakexa == NULL)
return FALSE;
fakexa->exa = exaDriverAlloc();
if (fakexa->exa == NULL) {
xfree(fakexa);
return FALSE;
}
fakexa->exa->memoryBase = screen->memory_base;
fakexa->exa->memorySize = screen->memory_size;
fakexa->exa->offScreenBase = screen->off_screen_base;
/* Since we statically link against EXA, we shouldn't have to be smart about
* versioning.
*/
fakexa->exa->exa_major = 2;
fakexa->exa->exa_minor = 0;
fakexa->exa->PrepareSolid = ephyrPrepareSolid;
fakexa->exa->Solid = ephyrSolid;
fakexa->exa->DoneSolid = ephyrDoneSolid;
fakexa->exa->PrepareCopy = ephyrPrepareCopy;
fakexa->exa->Copy = ephyrCopy;
fakexa->exa->DoneCopy = ephyrDoneCopy;
fakexa->exa->CheckComposite = ephyrCheckComposite;
fakexa->exa->PrepareComposite = ephyrPrepareComposite;
fakexa->exa->Composite = ephyrComposite;
fakexa->exa->DoneComposite = ephyrDoneComposite;
fakexa->exa->DownloadFromScreen = ephyrDownloadFromScreen;
fakexa->exa->UploadToScreen = ephyrUploadToScreen;
fakexa->exa->MarkSync = ephyrMarkSync;
fakexa->exa->WaitMarker = ephyrWaitMarker;
fakexa->exa->PrepareAccess = ephyrPrepareAccess;
fakexa->exa->pixmapOffsetAlign = EPHYR_OFFSET_ALIGN;
fakexa->exa->pixmapPitchAlign = EPHYR_PITCH_ALIGN;
fakexa->exa->maxX = 1023;
fakexa->exa->maxY = 1023;
fakexa->exa->flags = EXA_OFFSCREEN_PIXMAPS;
success = exaDriverInit(pScreen, fakexa->exa);
if (success) {
ErrorF("Initialized fake EXA acceleration\n");
scrpriv->fakexa = fakexa;
} else {
ErrorF("Failed to initialize EXA\n");
xfree(fakexa->exa);
xfree(fakexa);
}
return success;
}
void
ephyrDrawEnable(ScreenPtr pScreen)
{
}
void
ephyrDrawDisable(ScreenPtr pScreen)
{
}
void
ephyrDrawFini(ScreenPtr pScreen)
{
}
/**
* exaDDXDriverInit is required by the top-level EXA module, and is used by
* the xorg DDX to hook in its EnableDisableFB wrapper. We don't need it, since
* we won't be enabling/disabling the FB.
*/
void
exaDDXDriverInit(ScreenPtr pScreen)
{
ExaScreenPriv(pScreen);
pExaScr->migration = ExaMigrationSmart;
pExaScr->checkDirtyCorrectness = TRUE;
}
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