369 lines
10 KiB
C
369 lines
10 KiB
C
/*
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* Copyright © 2006 Intel Corporation
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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 "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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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, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <kdrive-config.h>
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#endif
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#include "ephyr.h"
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#include "exa_priv.h"
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#include "fbpict.h"
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#define EPHYR_TRACE_DRAW 0
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#if EPHYR_TRACE_DRAW
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#define TRACE_DRAW() ErrorF("%s\n", __FUNCTION__);
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#else
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#define TRACE_DRAW() do { } while (0)
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#endif
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/* Use some oddball alignments, to expose issues in alignment handling in EXA. */
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#define EPHYR_OFFSET_ALIGN 11
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#define EPHYR_PITCH_ALIGN 9
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#define EPHYR_OFFSCREEN_SIZE (16 * 1024 * 1024)
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#define EPHYR_OFFSCREEN_BASE (1 * 1024 * 1024)
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/**
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* Sets up a scratch GC for fbFill, and saves other parameters for the
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* ephyrSolid implementation.
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*/
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static Bool
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ephyrPrepareSolid(PixmapPtr pPix, int alu, Pixel pm, Pixel fg)
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{
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ScreenPtr pScreen = pPix->drawable.pScreen;
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KdScreenPriv(pScreen);
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KdScreenInfo *screen = pScreenPriv->screen;
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EphyrScrPriv *scrpriv = screen->driver;
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EphyrFakexaPriv *fakexa = scrpriv->fakexa;
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CARD32 tmpval[3];
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fakexa->pDst = pPix;
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fakexa->pGC = GetScratchGC(pPix->drawable.depth, pScreen);
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tmpval[0] = alu;
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tmpval[1] = pm;
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tmpval[2] = fg;
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ChangeGC(fakexa->pGC, GCFunction | GCPlaneMask | GCForeground,
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tmpval);
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ValidateGC(&pPix->drawable, fakexa->pGC);
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TRACE_DRAW();
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return TRUE;
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}
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/**
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* Does an fbFill of the rectangle to be drawn.
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*/
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static void
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ephyrSolid(PixmapPtr pPix, int x1, int y1, int x2, int y2)
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{
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ScreenPtr pScreen = pPix->drawable.pScreen;
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KdScreenPriv(pScreen);
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KdScreenInfo *screen = pScreenPriv->screen;
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EphyrScrPriv *scrpriv = screen->driver;
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EphyrFakexaPriv *fakexa = scrpriv->fakexa;
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fbFill(&fakexa->pDst->drawable, fakexa->pGC, x1, y1, x2 - x1, y2 - y1);
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}
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/**
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* Cleans up the scratch GC created in ephyrPrepareSolid.
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*/
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static void
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ephyrDoneSolid(PixmapPtr pPix)
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{
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ScreenPtr pScreen = pPix->drawable.pScreen;
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KdScreenPriv(pScreen);
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KdScreenInfo *screen = pScreenPriv->screen;
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EphyrScrPriv *scrpriv = screen->driver;
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EphyrFakexaPriv *fakexa = scrpriv->fakexa;
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FreeScratchGC(fakexa->pGC);
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}
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/**
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* Sets up a scratch GC for fbCopyArea, and saves other parameters for the
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* ephyrCopy implementation.
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*/
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static Bool
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ephyrPrepareCopy(PixmapPtr pSrc, PixmapPtr pDst, int dx, int dy, int alu,
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Pixel pm)
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{
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ScreenPtr pScreen = pDst->drawable.pScreen;
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KdScreenPriv(pScreen);
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KdScreenInfo *screen = pScreenPriv->screen;
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EphyrScrPriv *scrpriv = screen->driver;
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EphyrFakexaPriv *fakexa = scrpriv->fakexa;
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CARD32 tmpval[2];
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fakexa->pSrc = pSrc;
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fakexa->pDst = pDst;
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fakexa->pGC = GetScratchGC(pDst->drawable.depth, pScreen);
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tmpval[0] = alu;
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tmpval[1] = pm;
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ChangeGC (fakexa->pGC, GCFunction | GCPlaneMask, tmpval);
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ValidateGC(&pDst->drawable, fakexa->pGC);
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TRACE_DRAW();
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return TRUE;
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}
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/**
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* Does an fbCopyArea to take care of the requested copy.
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*/
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static void
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ephyrCopy(PixmapPtr pDst, int srcX, int srcY, int dstX, int dstY, int w, int h)
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{
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ScreenPtr pScreen = pDst->drawable.pScreen;
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KdScreenPriv(pScreen);
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KdScreenInfo *screen = pScreenPriv->screen;
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EphyrScrPriv *scrpriv = screen->driver;
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EphyrFakexaPriv *fakexa = scrpriv->fakexa;
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fbCopyArea(&fakexa->pSrc->drawable, &fakexa->pDst->drawable, fakexa->pGC,
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srcX, srcY, w, h, dstX, dstY);
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}
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/**
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* Cleans up the scratch GC created in ephyrPrepareCopy.
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*/
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static void
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ephyrDoneCopy(PixmapPtr pDst)
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{
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ScreenPtr pScreen = pDst->drawable.pScreen;
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KdScreenPriv(pScreen);
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KdScreenInfo *screen = pScreenPriv->screen;
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EphyrScrPriv *scrpriv = screen->driver;
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EphyrFakexaPriv *fakexa = scrpriv->fakexa;
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FreeScratchGC (fakexa->pGC);
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}
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/**
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* Reports that we can always accelerate the given operation. This may not be
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* desirable from an EXA testing standpoint -- testing the fallback paths would
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* be useful, too.
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*/
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static Bool
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ephyrCheckComposite(int op, PicturePtr pSrcPicture, PicturePtr pMaskPicture,
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PicturePtr pDstPicture)
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{
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return TRUE;
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}
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/**
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* Saves off the parameters for ephyrComposite.
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*/
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static Bool
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ephyrPrepareComposite(int op, PicturePtr pSrcPicture, PicturePtr pMaskPicture,
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PicturePtr pDstPicture, PixmapPtr pSrc, PixmapPtr pMask,
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PixmapPtr pDst)
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{
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KdScreenPriv(pDst->drawable.pScreen);
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KdScreenInfo *screen = pScreenPriv->screen;
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EphyrScrPriv *scrpriv = screen->driver;
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EphyrFakexaPriv *fakexa = scrpriv->fakexa;
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op = op;
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fakexa->pSrcPicture = pSrcPicture;
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fakexa->pMaskPicture = pMaskPicture;
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fakexa->pDstPicture = pDstPicture;
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TRACE_DRAW();
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return TRUE;
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}
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/**
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* Does an fbComposite to complete the requested drawing operation.
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*/
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static void
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ephyrComposite(PixmapPtr pDst, int srcX, int srcY, int maskX, int maskY,
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int dstX, int dstY, int w, int h)
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{
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KdScreenPriv(pDst->drawable.pScreen);
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KdScreenInfo *screen = pScreenPriv->screen;
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EphyrScrPriv *scrpriv = screen->driver;
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EphyrFakexaPriv *fakexa = scrpriv->fakexa;
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fbComposite(fakexa->op, fakexa->pSrcPicture, fakexa->pMaskPicture,
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fakexa->pDstPicture, srcX, srcY, maskX, maskY, dstX, dstY,
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w, h);
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}
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static void
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ephyrDoneComposite(PixmapPtr pDst)
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{
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}
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/**
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* In fakexa, we currently only track whether we have synced to the latest
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* "accelerated" drawing that has happened or not. This will be used by an
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* ephyrPrepareAccess for the purpose of reliably providing garbage when
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* reading/writing when we haven't synced.
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*/
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static int
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ephyrMarkSync(ScreenPtr pScreen)
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{
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KdScreenPriv(pScreen);
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KdScreenInfo *screen = pScreenPriv->screen;
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EphyrScrPriv *scrpriv = screen->driver;
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EphyrFakexaPriv *fakexa = scrpriv->fakexa;
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fakexa->is_synced = FALSE;
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return 0;
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}
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/**
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* Assumes that we're waiting on the latest marker. When EXA gets smarter and
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* starts using markers in a fine-grained way (for example, waiting on drawing
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* to required pixmaps to complete, rather than waiting for all drawing to
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* complete), we'll want to make the ephyrMarkSync/ephyrWaitMarker
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* implementation fine-grained as well.
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*/
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static void
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ephyrWaitMarker(ScreenPtr pScreen, int marker)
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{
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KdScreenPriv(pScreen);
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KdScreenInfo *screen = pScreenPriv->screen;
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EphyrScrPriv *scrpriv = screen->driver;
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EphyrFakexaPriv *fakexa = scrpriv->fakexa;
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fakexa->is_synced = TRUE;
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}
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/**
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* This function initializes EXA to use the fake acceleration implementation
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* which just falls through to software. The purpose is to have a reliable,
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* correct driver with which to test changes to the EXA core.
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*/
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Bool
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ephyrDrawInit(ScreenPtr pScreen)
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{
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KdScreenPriv(pScreen);
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KdScreenInfo *screen = pScreenPriv->screen;
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EphyrScrPriv *scrpriv = screen->driver;
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EphyrFakexaPriv *fakexa;
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Bool success;
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fakexa = xcalloc(1, sizeof(*fakexa));
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if (fakexa == NULL)
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return FALSE;
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#if 0
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/* Currently, EXA isn't ready for what we want to do here. We want one
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* pointer to the framebuffer (which is set in exaMapFramebuffer) to be
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* considered "in framebuffer", and a separate pointer to offscreen memory,
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* which is also considered to be in framebuffer. The alternative would be
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* to extend the XImage data area set up in hostx.c from exaMapFramebuffer,
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* but that may be complicated.
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*/
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fakexa->exa.card.memoryBase = xalloc(EPHYR_OFFSCREEN_SIZE);
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if (fakexa->exa.card.memoryBase == NULL) {
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xfree(fakexa);
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return FALSE;
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}
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fakexa->exa.card.memorySize = EPHYR_OFFSCREEN_SIZE;
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fakexa->exa.card.offScreenBase = EPHYR_OFFSCREEN_BASE;
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#else
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/* Tell EXA that there's a single framebuffer area, which happens to cover
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* exactly what the front buffer is.
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*/
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fakexa->exa.card.memoryBase = screen->memory_base;
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fakexa->exa.card.memorySize = screen->off_screen_base;
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fakexa->exa.card.offScreenBase = screen->off_screen_base;
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#endif
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fakexa->exa.accel.PrepareSolid = ephyrPrepareSolid;
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fakexa->exa.accel.Solid = ephyrSolid;
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fakexa->exa.accel.DoneSolid = ephyrDoneSolid;
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fakexa->exa.accel.PrepareCopy = ephyrPrepareCopy;
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fakexa->exa.accel.Copy = ephyrCopy;
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fakexa->exa.accel.DoneCopy = ephyrDoneCopy;
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fakexa->exa.accel.CheckComposite = ephyrCheckComposite;
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fakexa->exa.accel.PrepareComposite = ephyrPrepareComposite;
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fakexa->exa.accel.Composite = ephyrComposite;
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fakexa->exa.accel.DoneComposite = ephyrDoneComposite;
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fakexa->exa.accel.MarkSync = ephyrMarkSync;
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fakexa->exa.accel.WaitMarker = ephyrWaitMarker;
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fakexa->exa.card.pixmapOffsetAlign = EPHYR_OFFSET_ALIGN;
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fakexa->exa.card.pixmapPitchAlign = EPHYR_PITCH_ALIGN;
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fakexa->exa.card.maxX = 1023;
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fakexa->exa.card.maxY = 1023;
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fakexa->exa.card.flags = EXA_OFFSCREEN_PIXMAPS;
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success = exaDriverInit(pScreen, &fakexa->exa);
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if (success) {
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ErrorF("Initialized fake EXA acceleration\n");
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scrpriv->fakexa = fakexa;
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} else {
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ErrorF("Failed to initialize EXA\n");
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xfree(fakexa->exa.card.memoryBase);
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xfree(fakexa);
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}
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return success;
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}
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void
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ephyrDrawEnable(ScreenPtr pScreen)
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{
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}
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void
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ephyrDrawDisable(ScreenPtr pScreen)
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{
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}
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void
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ephyrDrawFini(ScreenPtr pScreen)
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{
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}
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/**
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* exaDDXDriverInit is required by the top-level EXA module, and is used by
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* the xorg DDX to hook in its EnableDisableFB wrapper. We don't need it, since
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* we won't be enabling/disabling the FB.
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*/
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void
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exaDDXDriverInit(ScreenPtr pScreen)
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{
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}
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